diff --git a/DRUM/Makefile b/DRUM/Makefile
new file mode 100644
index 0000000..8245c45
--- /dev/null
+++ b/DRUM/Makefile
@@ -0,0 +1,34 @@
+NAME=testproj
+SDCC=sdcc
+
+CCFLAGS=-DSTM8S105 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx -DUART
+LDFLAGS= -mstm8 --out-fmt-ihx -lstm8
+FLASHFLAGS=-cstlinkv2 -pstm8s105
+
+SRC=$(wildcard *.c)
+# ATTENTION: FIRST in list should be file with main()
+OBJ=$(SRC:%.c=%.rel)
+TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
+TRASH+=$(SRC:%.c=%.sym) $(NAME).ihx $(NAME).lk $(NAME).map
+INDEPENDENT_HEADERS=../stm8l.h ports_definition.h Makefile
+
+all: $(NAME).ihx
+
+$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
+	@touch $@
+
+%.h: ;
+
+clean:
+	rm -f $(TRASH)
+
+load: $(NAME).ihx
+	stm8flash $(FLASHFLAGS) -w $(NAME).ihx
+
+%.rel: %.c
+	$(SDCC) $(CCFLAGS) -c $<
+
+$(NAME).ihx: $(OBJ)
+	$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
+
+.PHONY: all
diff --git a/DRUM/README b/DRUM/README
new file mode 100644
index 0000000..c5f02b8
--- /dev/null
+++ b/DRUM/README
@@ -0,0 +1 @@
+This is a table-based generator of simplest waveforms
diff --git a/DRUM/interrupts.c b/DRUM/interrupts.c
new file mode 100644
index 0000000..aa6dd7e
--- /dev/null
+++ b/DRUM/interrupts.c
@@ -0,0 +1,182 @@
+/*
+ * interrupts.c
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include "ports_definition.h"
+#include "main.h"
+#include "noicegen.h"
+
+// Top Level Interrupt
+INTERRUPT_HANDLER(TLI_IRQHandler, 0){}
+
+// Auto Wake Up Interrupt
+INTERRUPT_HANDLER(AWU_IRQHandler, 1){}
+
+// Clock Controller Interrupt
+INTERRUPT_HANDLER(CLK_IRQHandler, 2){}
+
+// External Interrupt PORTA
+INTERRUPT_HANDLER(EXTI_PORTA_IRQHandler, 3){
+
+}
+
+// External Interrupt PORTB
+INTERRUPT_HANDLER(EXTI_PORTB_IRQHandler, 4){
+
+}
+
+// External Interrupt PORTC
+INTERRUPT_HANDLER(EXTI_PORTC_IRQHandler, 5){
+
+}
+
+// External Interrupt PORTD
+INTERRUPT_HANDLER(EXTI_PORTD_IRQHandler, 6){
+
+}
+
+// External Interrupt PORTE
+INTERRUPT_HANDLER(EXTI_PORTE_IRQHandler, 7){
+
+}
+
+#ifdef STM8S903
+// External Interrupt PORTF
+INTERRUPT_HANDLER(EXTI_PORTF_IRQHandler, 8){}
+#endif // STM8S903
+
+#if defined (STM8S208) || defined (STM8AF52Ax)
+// CAN RX Interrupt routine.
+INTERRUPT_HANDLER(CAN_RX_IRQHandler, 8){}
+
+// CAN TX Interrupt routine.
+INTERRUPT_HANDLER(CAN_TX_IRQHandler, 9){}
+#endif // STM8S208 || STM8AF52Ax
+
+// SPI Interrupt routine.
+INTERRUPT_HANDLER(SPI_IRQHandler, 10){}
+
+// Timer1 Update/Overflow/Trigger/Break Interrupt
+INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11){
+}
+
+// Timer1 Capture/Compare Interrupt routine.
+INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12){}
+
+#ifdef STM8S903
+// Timer5 Update/Overflow/Break/Trigger Interrupt
+INTERRUPT_HANDLER(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13){}
+
+// Timer5 Capture/Compare Interrupt
+INTERRUPT_HANDLER(TIM5_CAP_COM_IRQHandler, 14){}
+
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+
+// Timer2 Update/Overflow/Break Interrupt
+INTERRUPT_HANDLER(TIM2_UPD_OVF_BRK_IRQHandler, 13){ // generate pulses for stepper CLK
+	if(TIM2_SR1 & TIM_SR1_UIF){
+		sample_flag = 1;
+		TIM2_SR1 &= ~TIM_SR1_UIF;
+	}
+}
+
+// Timer2 Capture/Compare Interrupt
+INTERRUPT_HANDLER(TIM2_CAP_COM_IRQHandler, 14){
+}
+#endif // STM8S903
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
+    defined(STM8S005) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
+// Timer3 Update/Overflow/Break Interrupt
+INTERRUPT_HANDLER(TIM3_UPD_OVF_BRK_IRQHandler, 15){
+
+}
+
+// Timer3 Capture/Compare Interrupt
+INTERRUPT_HANDLER(TIM3_CAP_COM_IRQHandler, 16){}
+#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
+    defined(STM8S003) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
+// UART1 TX Interrupt
+INTERRUPT_HANDLER(UART1_TX_IRQHandler, 17){}
+
+// UART1 RX Interrupt
+INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18){}
+#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
+
+// I2C Interrupt
+INTERRUPT_HANDLER(I2C_IRQHandler, 19){}
+
+#if defined(STM8S105) || defined(STM8S005) ||  defined (STM8AF626x)
+// UART2 TX interrupt
+INTERRUPT_HANDLER(UART2_TX_IRQHandler, 20){}
+
+// UART2 RX interrupt
+INTERRUPT_HANDLER(UART2_RX_IRQHandler, 21){
+#ifdef UART
+	U8 rb;
+	if(UART2_SR & UART_SR_RXNE){ // data received
+		rb = UART2_DR; // read received byte & clear RXNE flag
+		while(!(UART2_SR & UART_SR_TXE));
+		UART_send_byte(rb); // echo received symbol
+		UART_rx[UART_rx_cur_i++] = rb; // put received byte into cycled buffer
+		if(UART_rx_cur_i == UART_rx_start_i){ // Oops: buffer overflow! Just forget old data
+			UART_rx_start_i++;
+			check_UART_pointer(UART_rx_start_i);
+		}
+		check_UART_pointer(UART_rx_cur_i);
+	}
+#endif
+}
+#endif // STM8S105 or STM8AF626x
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// UART3 TX interrupt
+INTERRUPT_HANDLER(UART3_TX_IRQHandler, 20){}
+
+// UART3 RX interrupt
+INTERRUPT_HANDLER(UART3_RX_IRQHandler, 21){}
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// ADC2 interrupt
+INTERRUPT_HANDLER(ADC2_IRQHandler, 22){}
+#else
+// ADC1 interrupt
+INTERRUPT_HANDLER(ADC1_IRQHandler, 22){
+}
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#ifdef STM8S903
+// Timer6 Update/Overflow/Trigger Interrupt
+INTERRUPT_HANDLER(TIM6_UPD_OVF_TRG_IRQHandler, 23){}
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
+// Timer4 Update/Overflow Interrupt
+INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23){
+	if(TIM4_SR & TIM_SR1_UIF){ // update interrupt
+		Global_time++; // increase timer
+	}
+	TIM4_SR = 0; // clear all interrupt flags
+}
+#endif // STM8S903
+
+// Eeprom EEC Interrupt
+INTERRUPT_HANDLER(EEPROM_EEC_IRQHandler, 24){}
diff --git a/DRUM/interrupts.h b/DRUM/interrupts.h
new file mode 100644
index 0000000..6edf384
--- /dev/null
+++ b/DRUM/interrupts.h
@@ -0,0 +1,144 @@
+/*
+ * interrupts.h
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#pragma once
+#ifndef __INTERRUPTS_H__
+#define __INTERRUPTS_H__
+
+#include "stm8l.h"
+
+// Top Level Interrupt
+INTERRUPT_DEFINITION(TLI_IRQHandler, 0);
+
+// Auto Wake Up Interrupt
+INTERRUPT_DEFINITION(AWU_IRQHandler, 1);
+
+// Clock Controller Interrupt
+INTERRUPT_DEFINITION(CLK_IRQHandler, 2);
+
+// External Interrupt PORTA
+INTERRUPT_DEFINITION(EXTI_PORTA_IRQHandler, 3);
+
+// External Interrupt PORTB
+INTERRUPT_DEFINITION(EXTI_PORTB_IRQHandler, 4);
+
+// External Interrupt PORTC
+INTERRUPT_DEFINITION(EXTI_PORTC_IRQHandler, 5);
+
+// External Interrupt PORTD
+INTERRUPT_DEFINITION(EXTI_PORTD_IRQHandler, 6);
+
+// External Interrupt PORTE
+INTERRUPT_DEFINITION(EXTI_PORTE_IRQHandler, 7);
+
+#ifdef STM8S903
+// External Interrupt PORTF
+INTERRUPT_DEFINITION(EXTI_PORTF_IRQHandler, 8);
+#endif // STM8S903
+
+#if defined (STM8S208) || defined (STM8AF52Ax)
+// CAN RX Interrupt routine.
+INTERRUPT_DEFINITION(CAN_RX_IRQHandler, 8);
+
+// CAN TX Interrupt routine.
+INTERRUPT_DEFINITION(CAN_TX_IRQHandler, 9);
+#endif // STM8S208 || STM8AF52Ax
+
+// SPI Interrupt routine.
+INTERRUPT_DEFINITION(SPI_IRQHandler, 10);
+
+// Timer1 Update/Overflow/Trigger/Break Interrupt
+INTERRUPT_DEFINITION(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11);
+
+// Timer1 Capture/Compare Interrupt routine.
+INTERRUPT_DEFINITION(TIM1_CAP_COM_IRQHandler, 12);
+
+#ifdef STM8S903
+// Timer5 Update/Overflow/Break/Trigger Interrupt
+INTERRUPT_DEFINITION(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13);
+
+// Timer5 Capture/Compare Interrupt
+INTERRUPT_DEFINITION(TIM5_CAP_COM_IRQHandler, 14);
+
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+// Timer2 Update/Overflow/Break Interrupt
+INTERRUPT_DEFINITION(TIM2_UPD_OVF_BRK_IRQHandler, 13);
+
+// Timer2 Capture/Compare Interrupt
+INTERRUPT_DEFINITION(TIM2_CAP_COM_IRQHandler, 14);
+#endif // STM8S903
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
+    defined(STM8S005) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
+// Timer3 Update/Overflow/Break Interrupt
+INTERRUPT_DEFINITION(TIM3_UPD_OVF_BRK_IRQHandler, 15);
+
+// Timer3 Capture/Compare Interrupt
+INTERRUPT_DEFINITION(TIM3_CAP_COM_IRQHandler, 16);
+#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
+    defined(STM8S003) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
+// UART1 TX Interrupt
+INTERRUPT_DEFINITION(UART1_TX_IRQHandler, 17);
+
+// UART1 RX Interrupt
+INTERRUPT_DEFINITION(UART1_RX_IRQHandler, 18);
+#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
+
+// I2C Interrupt
+INTERRUPT_DEFINITION(I2C_IRQHandler, 19);
+
+#if defined(STM8S105) || defined(STM8S005) ||  defined (STM8AF626x)
+// UART2 TX interrupt
+INTERRUPT_DEFINITION(UART2_TX_IRQHandler, 20);
+
+// UART2 RX interrupt
+INTERRUPT_DEFINITION(UART2_RX_IRQHandler, 21);
+#endif // STM8S105 or STM8AF626x
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// UART3 TX interrupt
+INTERRUPT_DEFINITION(UART3_TX_IRQHandler, 20);
+
+// UART3 RX interrupt
+INTERRUPT_DEFINITION(UART3_RX_IRQHandler, 21);
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// ADC2 interrupt
+INTERRUPT_DEFINITION(ADC2_IRQHandler, 22);
+#else // STM8S105, STM8S103 or STM8S903 or STM8AF626x
+// ADC1 interrupt
+INTERRUPT_DEFINITION(ADC1_IRQHandler, 22);
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#ifdef STM8S903
+// Timer6 Update/Overflow/Trigger Interrupt
+INTERRUPT_DEFINITION(TIM6_UPD_OVF_TRG_IRQHandler, 23);
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
+// Timer4 Update/Overflow Interrupt
+INTERRUPT_DEFINITION(TIM4_UPD_OVF_IRQHandler, 23);
+#endif // STM8S903
+
+// Eeprom EEC Interrupt
+INTERRUPT_DEFINITION(EEPROM_EEC_IRQHandler, 24);
+
+#endif // __INTERRUPTS_H__
diff --git a/DRUM/main.c b/DRUM/main.c
new file mode 100644
index 0000000..a27675e
--- /dev/null
+++ b/DRUM/main.c
@@ -0,0 +1,267 @@
+/*
+ * blinky.c
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include "stm8l.h"
+#include "ports_definition.h"
+#include "interrupts.h"
+#include "main.h"
+#include "noicegen.h"
+
+/*
+ * 0 0000
+ * 1 0001
+ * 2 0010
+ * 3 0011
+ * 4 0100
+ * 5 0101
+ * 6 0110
+ * 7 0111
+ * 8 1000
+ * 9 1001
+ * a 1010
+ * b 1011
+ * c 1100
+ * d 1101
+ * e 1110
+ * f 1111
+ */
+
+unsigned long Global_time = 0L, boom_start = 0L; // global time in ms
+unsigned int boom_length = 100; // length of "boom" in ms
+U16 paused_val = 500; // interval between LED flashing
+U8 snd_i = 0, bank_i = 0;  // number of sample in sound, number in sine vawe
+U8 sample_flag = 0;   // flag is set in interrupt -> next sample in sound
+
+#ifdef UART
+U8 UART_rx[UART_BUF_LEN]; // cycle buffer for received data
+U8 UART_rx_start_i = 0;   // started index of received data (from which reading starts)
+U8 UART_rx_cur_i = 0;     // index of current first byte in rx array (to which data will be written)
+U8 UART_is_our = 0;       // ==1 if we get UART
+// ATTENTION! to change global variable in PROGRAM memory, it should be CONST!!!
+const U8 UART_devNUM = THIS_DEVICE_NUM; // device number, master sais it
+
+/**
+ * Send one byte through UART
+ * @param byte - data to send
+ */
+void UART_send_byte(U8 byte){
+	UART2_DR = byte;
+	while(!(UART2_SR & UART_SR_TC));
+}
+
+void uart_write(char *str){
+	while(*str){
+		UART2_DR = *str++;
+		while(!(UART2_SR & UART_SR_TC));
+	}
+}
+
+/**
+ * Read one byte from Rx buffer
+ * @param byte - where to store readed data
+ * @return 1 in case of non-empty buffer
+ */
+U8 UART_read_byte(U8 *byte){
+	if(UART_rx_start_i == UART_rx_cur_i) // buffer is empty
+		return 0;
+	*byte = UART_rx[UART_rx_start_i++];
+	check_UART_pointer(UART_rx_start_i);
+	return 1;
+}
+
+void printUint(U8 *val, U8 len){
+	unsigned long Number = 0;
+	U8 i = len;
+	char ch;
+	U8 decimal_buff[12]; // max len of U32 == 10 + \n + \0
+	if(len > 4 || len == 3 || len == 0) return;
+	for(i = 0; i < 12; i++)
+		decimal_buff[i] = 0;
+	decimal_buff[10] = '\n';
+	ch = 9;
+	switch(len){
+		case 1:
+			Number = *((U8*)val);
+			break;
+		case 2:
+			Number = *((U16*)val);
+		break;
+		case 4:
+			Number = *((unsigned long*)val);
+		break;
+	}
+	do{
+		i = Number % 10L;
+		decimal_buff[ch--] = i + '0';
+		Number /= 10L;
+	}while(Number && ch > -1);
+	uart_write((char*)&decimal_buff[ch+1]);
+}
+
+U8 readInt(int *val){
+	unsigned long T = Global_time;
+	unsigned long R = 0;
+	int readed;
+	U8 sign = 0, rb, ret = 0, bad = 0;
+	do{
+		if(!UART_read_byte(&rb)) continue;
+		if(rb == '-' && R == 0){ // negative number
+			sign = 1;
+			continue;
+		}
+		if(rb < '0' || rb > '9') break; // number ends with any non-digit symbol that will be omitted
+		ret = 1; // there's at least one digit
+		R = R * 10L + rb - '0';
+		if(R > 0x7fff){ // bad value
+			R = 0;
+			bad = 0;
+		}
+	}while(Global_time - T < 10000); // wait no longer than 10s
+	if(bad || !ret) return 0;
+	readed = (int) R;
+	if(sign) readed *= -1;
+	*val = readed;
+	return 1;
+}
+
+
+void error_msg(char *msg){
+	uart_write("\nERROR: ");
+	uart_write(msg);
+	UART_send_byte('\n');
+}
+#endif // UART
+
+
+int main() {
+	unsigned long T = 0L;
+	unsigned int I;
+	U8 cur_vol;
+	int Ival;
+#ifdef UART
+	U8 rb;
+#endif
+	CFG_GCR |= 1; // disable SWIM
+	// Configure clocking
+	CLK_CKDIVR = 0; // F_HSI = 16MHz, f_CPU = 16MHz
+	// Timer 4 (8 bit) used as system tick timer
+	// prescaler == 128 (2^7), Tfreq = 125kHz
+	// period = 1ms, so ARR = 125
+	TIM4_PSCR = 7;
+	TIM4_ARR = 125;
+	// interrupts: update
+	TIM4_IER = TIM_IER_UIE;
+	// auto-reload + interrupt on overflow + enable
+	TIM4_CR1 = TIM_CR1_APRE | TIM_CR1_URS | TIM_CR1_CEN;
+#ifdef UART
+	// Configure pins
+	// PC2 - PP output (on-board LED)
+	PORT(LED_PORT, DDR) |= LED_PIN;
+	PORT(LED_PORT, CR1) |= LED_PIN;
+	// PD5 - UART2_TX -- pseudo open-drain output; don't forget an pullup resistor!
+	PORT(UART_PORT, DDR) |= UART_TX_PIN;
+	PORT(UART_PORT, ODR) &= ~UART_TX_PIN; // turn off N push-down
+	//PORT(UART_PORT, CR1) |= UART_TX_PIN;
+#endif
+	PC_DDR |= GPIO_PIN1; // setup timer's output
+	PC_ODR &= ~GPIO_PIN1;
+#ifdef UART
+	// Configure UART
+	// 9 bit, no parity, 1 stop (UART_CR3 = 0 - reset value)
+	// 57600 on 16MHz: BRR1=0x11, BRR2=0x06
+	UART2_BRR1 = 0x11; UART2_BRR2 = 0x06;
+	UART2_CR2 = UART_CR2_TEN | UART_CR2_REN | UART_CR2_RIEN; // Allow RX/TX, generate ints on rx
+#endif
+	configure_timers();
+
+	// enable all interrupts
+	enableInterrupts();
+
+	// Loop
+	do{
+		if(sample_flag){ // next sample in sound
+			I = Global_time - boom_start; // amount of us from start
+			if(I > boom_length || boom_start > Global_time){
+				// end of sound
+				stop_snd();
+			}else{
+				I *= 16;
+				cur_vol = 16 - I / boom_length; // linear fading
+				// generate meander
+				if(bank_i){
+					change_CCR(0);
+					bank_i = 0;
+				}else{
+					change_CCR(cur_vol);
+					bank_i = 1;
+				}
+			}
+		}
+		if((Global_time - T > paused_val) || (T > Global_time)){
+			T = Global_time;
+			#ifdef UART
+			PORT(LED_PORT, ODR) ^= LED_PIN; // blink on-board LED
+			#endif
+		}
+		#ifdef UART
+		if(UART_read_byte(&rb)){ // buffer isn't empty
+			switch(rb){
+				case 'h': // help
+				case 'H':
+					uart_write("\nPROTO:\n"
+						"+/-\tLED period\n"
+						"P/p\tBoom\n"
+						"F\tSet frequency\n"
+						"L\tChange boom length (in ms)\n"
+						);
+				break;
+				break;
+				case '+':
+					paused_val += 100;
+					if(paused_val > 10000)
+						paused_val = 500; // but not more than 10s
+				break;
+				case '-':
+					paused_val -= 100;
+					if(paused_val < 100)  // but not less than 0.1s
+						paused_val = 500;
+				break;
+				case 'F':
+					if(readInt(&Ival) && Ival > 64){
+						change_period(((U16)Ival) >> 4); // F*4 for 16 array values
+					}else error_msg("bad period");
+				break;
+				case 'P':
+				case 'p':
+					play_snd();
+				break;
+				case 'L':
+					if(readInt(&Ival) && Ival < 1000 && Ival > 1){
+						boom_length = Ival;
+					}else error_msg("bad length");
+				break;
+			}
+		}
+		#endif
+	}while(1);
+}
+
+
diff --git a/DRUM/main.h b/DRUM/main.h
new file mode 100644
index 0000000..f202da6
--- /dev/null
+++ b/DRUM/main.h
@@ -0,0 +1,46 @@
+/*
+ * blinky.h
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#pragma once
+#ifndef __MAIN_H__
+#define __MAIN_H__
+
+extern unsigned long Global_time, boom_start; // global time in ms
+extern U8 sample_flag; // flag is set in interrupt -> next sample in sound
+extern U8 snd_i, bank_i;
+
+#define UART_BUF_LEN 8			// max 7 bytes transmited in on operation
+#define MIN_STEP_LENGTH 9		// max speed, microseconds for one microstep
+#define THIS_DEVICE_NUM 1		// hardware number (0..255) can be changed by writting into EEPROM
+
+#ifdef UART
+extern U8 UART_rx[];
+extern U8 UART_rx_start_i;
+extern U8 UART_rx_cur_i;
+
+void UART_send_byte(U8 byte);
+void uart_write(char *str);
+void printUint(U8 *val, U8 len);
+void error_msg(char *msg);
+#endif
+
+#define check_UART_pointer(x) if(x == UART_BUF_LEN) x = 0;
+
+#endif // __MAIN_H__
diff --git a/DRUM/noicegen.c b/DRUM/noicegen.c
new file mode 100644
index 0000000..29edc00
--- /dev/null
+++ b/DRUM/noicegen.c
@@ -0,0 +1,47 @@
+/*
+ * noicegen.c
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include "noicegen.h"
+
+void configure_timers(){
+	/**** TIMERS TIM1 - 1MHz, TIM2 - 1MHz ****/
+	TIM1_PSCRH = 0; // this timer have 16 bit prescaler
+	TIM1_PSCRL = 3; // LSB should be written last as it updates prescaler
+	TIM2_PSCR = 4;
+	// Timer1 is PWM sound level generator
+	// Timer2 runs with F*16 to change voltage level (F - frequency of sound)
+	TIM1_ARRH = 0;
+	TIM1_ARRL = 16;
+	TIM1_CCR1H = 0; TIM1_CCR1L = 8; // default: 50%
+	// channel 1 generates PWM pulses
+	TIM1_CCMR1 = 0x60; // OC1M = 110b - PWM mode 1 ( 1 -> 0)
+	//TIM1_CCMR1 = 0x70; // OC1M = 111b - PWM mode 2 ( 0 -> 1)
+	TIM1_CCER1 =  1; // Channel 1 is on. Active is high
+	//TIM1_CCER1 =  3; // Channel 1 is on. Active is low
+	// default period: near 32ms
+	TIM2_ARRH = 127; TIM2_ARRL = 0;
+	// interrupts: update for timer 2, none for timer 1
+	TIM1_IER = 0;
+	TIM2_IER = TIM_IER_UIE;
+	// enable PWM output for timer1
+	TIM1_BKR |= 0x80; // MOE
+}
+
diff --git a/DRUM/noicegen.h b/DRUM/noicegen.h
new file mode 100644
index 0000000..36221be
--- /dev/null
+++ b/DRUM/noicegen.h
@@ -0,0 +1,42 @@
+/*
+ * noicegen.h
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#pragma once
+#ifndef __NOICEGEN_H__
+#define __NOICEGEN_H__
+
+#include "stm8l.h"
+#include "main.h"
+
+#define TIM_EN  (TIM_CR1_APRE | TIM_CR1_URS | TIM_CR1_CEN)
+
+void configure_timers();
+
+// change period (in us)
+#define change_period(F) do{TIM2_ARRH = F >> 8; TIM2_ARRL = F;}while(0)
+#define change_CCR(C)  do{TIM1_CCR1H = 0; TIM1_CCR1L = C;}while(0)
+// change CCR value. U = Vcc *
+#define play_snd()     do{boom_start = Global_time; snd_i = 0; bank_i = 0; \
+							TIM1_CR1 = TIM_EN; TIM2_CR1 = TIM_EN;}while(0)
+#define stop_snd()     do{TIM1_CR1 |= TIM_CR1_OPM; TIM2_CR1 = 0;}while(0)
+
+
+#endif // __NOICEGEN_H__
diff --git a/DRUM/ports_definition.h b/DRUM/ports_definition.h
new file mode 100644
index 0000000..90e5611
--- /dev/null
+++ b/DRUM/ports_definition.h
@@ -0,0 +1,43 @@
+/*
+ * ports_definition.h - definition of ports pins & so on
+ *
+ * Copyright 2014 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#pragma once
+#ifndef __PORTS_DEFINITION_H__
+#define __PORTS_DEFINITION_H__
+
+#include "stm8l.h"
+
+// macro for using in port constructions like PORT(LED_PORT, ODR) = xx
+#define CONCAT(a,b)		a##_##b
+#define PORT(a,b)		CONCAT(a,b)
+
+// on-board LED
+#define LED_PORT		PC
+#define LED_PIN			GPIO_PIN2
+
+// UART2_TX
+#define UART_PORT		PD
+#define UART_TX_PIN		GPIO_PIN5
+
+
+
+
+#endif // __PORTS_DEFINITION_H__
diff --git a/DRUM/waveforms.m b/DRUM/waveforms.m
new file mode 100644
index 0000000..593c2d1
--- /dev/null
+++ b/DRUM/waveforms.m
@@ -0,0 +1,12 @@
+function waveforms(FN, nm)
+% Prints on stdout 16 values for waveform bank
+%   FN - array with 16 values of Vout (Vmin..Vmax), will be normalized
+%   nm - name of array
+	MIN = min(FN); MAX = max(FN);
+	FN = (FN - MIN) / (MAX - MIN);
+	VAL = round(FN * 16);
+	printf("static const U8 %s[16] = {", nm)
+	for i = 1:15; printf("%d, ", VAL(i)); endfor;
+	printf("%d};\n", VAL(16));
+	plot(VAL, 'o');
+endfunction
diff --git a/distance_meter/Makefile b/distance_meter/Makefile
new file mode 100644
index 0000000..b766c39
--- /dev/null
+++ b/distance_meter/Makefile
@@ -0,0 +1,34 @@
+NAME=testproj
+SDCC=sdcc
+
+CCFLAGS=-DSTM8S105 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx
+LDFLAGS= -mstm8 --out-fmt-ihx -lstm8
+FLASHFLAGS=-cstlinkv2 -pstm8s105
+
+SRC=$(wildcard *.c)
+# ATTENTION: FIRST in list should be file with main()
+OBJ=$(SRC:%.c=%.rel)
+TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
+TRASH+=$(SRC:%.c=%.sym) $(NAME).ihx $(NAME).lk $(NAME).map
+INDEPENDENT_HEADERS=../stm8l.h ports_definition.h Makefile
+
+all: $(NAME).ihx
+
+$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
+	@touch $@
+
+%.h: ;
+
+clean:
+	rm -f $(TRASH)
+
+load: $(NAME).ihx
+	stm8flash $(FLASHFLAGS) -w $(NAME).ihx
+
+%.rel: %.c
+	$(SDCC) $(CCFLAGS) -c $<
+
+$(NAME).ihx: $(OBJ)
+	$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
+
+.PHONY: all
diff --git a/distance_meter/client-term/Makefile b/distance_meter/client-term/Makefile
new file mode 100644
index 0000000..19bac1f
--- /dev/null
+++ b/distance_meter/client-term/Makefile
@@ -0,0 +1,22 @@
+PROGRAM = client
+LDFLAGS =
+SRCS = client.c
+CC = gcc
+DEFINES = -D_XOPEN_SOURCE=501
+CXX = gcc
+CFLAGS = -Wall -Werror $(DEFINES)
+OBJS = $(SRCS:.c=.o)
+all : $(PROGRAM) clean
+$(PROGRAM) : $(OBJS)
+	$(CC) $(CFLAGS) $(OBJS) $(LDFLAGS) -o $(PROGRAM)
+
+# some addition dependencies
+# %.o: %.c
+#        $(CC) $(LDFLAGS) $(CFLAGS) $< -o $@
+#$(SRCS) : %.c : %.h $(INDEPENDENT_HEADERS)
+#        @touch $@
+
+clean:
+	/bin/rm -f *.o *~
+depend:
+	$(CXX) -MM $(CXX.SRCS)
diff --git a/distance_meter/client-term/client.c b/distance_meter/client-term/client.c
new file mode 100644
index 0000000..4cc16ff
--- /dev/null
+++ b/distance_meter/client-term/client.c
@@ -0,0 +1,246 @@
+/*
+ * client.c - simple terminal client
+ *
+ * Copyright 2013 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#include <termios.h>		// tcsetattr
+#include <unistd.h>			// tcsetattr, close, read, write
+#include <sys/ioctl.h>		// ioctl
+#include <stdio.h>			// printf, getchar, fopen, perror
+#include <stdlib.h>			// exit
+#include <sys/stat.h>		// read
+#include <fcntl.h>			// read
+#include <signal.h>			// signal
+#include <time.h>			// time
+#include <string.h>			// memcpy
+#include <stdint.h>			// int types
+#include <sys/time.h>		// gettimeofday
+
+#define CMSPAR 010000000000
+
+double t0; // start time
+
+FILE *fout = NULL; // file for messages duplicating
+char *comdev = "/dev/ttyUSB0";
+int BAUD_RATE = B57600;
+struct termio oldtty, tty; // TTY flags
+struct termios oldt, newt; // terminal flags
+int comfd; // TTY fd
+
+/**
+ * function for different purposes that need to know time intervals
+ * @return double value: time in seconds
+ */
+double dtime(){
+	double t;
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	t = tv.tv_sec + ((double)tv.tv_usec)/1e6;
+	return t;
+}
+
+/**
+ * Exit & return terminal to old state
+ * @param ex_stat - status (return code)
+ */
+void quit(int ex_stat){
+	tcsetattr(STDIN_FILENO, TCSANOW, &oldt); // return terminal to previous state
+	ioctl(comfd, TCSANOW, &oldtty ); // return TTY to previous state
+	close(comfd);
+	if(fout) fclose(fout);
+	printf("Exit! (%d)\n", ex_stat);
+	exit(ex_stat);
+}
+
+unsigned char crc(unsigned char data){
+	unsigned char crc = data & 1;
+	unsigned int i;
+	for(i = 1; i<8; i++) crc ^= (data >> i) & 1;
+	return crc;
+}
+
+/**
+ * Open & setup TTY, terminal
+ */
+void tty_init(){
+	// terminal without echo
+	tcgetattr(STDIN_FILENO, &oldt);
+	newt = oldt;
+	newt.c_lflag &= ~(ICANON | ECHO);
+	if(tcsetattr(STDIN_FILENO, TCSANOW, &newt) < 0) quit(-2);
+	printf("\nOpen port...\n");
+	if ((comfd = open(comdev,O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0){
+		fprintf(stderr,"Can't use port %s\n",comdev);
+		quit(1);
+	}
+	printf(" OK\nGet current settings...\n");
+	if(ioctl(comfd,TCGETA,&oldtty) < 0) exit(-1); // Get settings
+	tty = oldtty;
+	tty.c_lflag     = 0; // ~(ICANON | ECHO | ECHOE | ISIG)
+	tty.c_oflag     = 0;
+	tty.c_iflag     = 0;
+	tty.c_cflag     = BAUD_RATE|CS8|CREAD|CLOCAL|PARENB; // we will emulate 9bit by PAR
+	tty.c_cc[VMIN]  = 0;  // non-canonical mode
+	tty.c_cc[VTIME] = 5;
+	if(ioctl(comfd,TCSETA,&tty) < 0) exit(-1); // set new mode
+	printf(" OK\n");
+	tcsetattr(STDIN_FILENO, TCSANOW, &newt);
+}
+
+/**
+ * Read character from console without echo
+ * @return char readed
+ */
+int read_console(){
+	int rb;
+	struct timeval tv;
+	int retval;
+	fd_set rfds;
+	FD_ZERO(&rfds);
+	FD_SET(STDIN_FILENO, &rfds);
+	tv.tv_sec = 0; tv.tv_usec = 10000;
+	retval = select(1, &rfds, NULL, NULL, &tv);
+	if(!retval) rb = 0;
+	else {
+		if(FD_ISSET(STDIN_FILENO, &rfds)) rb = getchar();
+		else rb = 0;
+	}
+	return rb;
+}
+
+/**
+ * getchar() without echo
+ * wait until at least one character pressed
+ * @return character readed
+ */
+int mygetchar(){ // getchar() without Enter
+	int ret;
+	do ret = read_console();
+	while(ret == 0);
+	return ret;
+}
+
+/**
+ * Read data from TTY
+ * @param buff (o) - buffer for data read
+ * @param length   - buffer len
+ * @return amount of readed bytes
+ */
+size_t read_tty(uint8_t *buff, size_t length){
+	ssize_t L = 0;
+	fd_set rfds;
+	struct timeval tv;
+	int retval;
+	FD_ZERO(&rfds);
+	FD_SET(comfd, &rfds);
+	tv.tv_sec = 0; tv.tv_usec = 10000; // wait for 10ms
+	retval = select(comfd + 1, &rfds, NULL, NULL, &tv);
+	if (!retval) return 0;
+	if(FD_ISSET(comfd, &rfds)){
+		if((L = read(comfd, buff, length)) < 1) return 0;
+	}
+	return (size_t)L;
+}
+
+void help(){
+	printf("Use this commands:\n"
+		"H\tShow this help\n"
+		"q\tQuit\n"
+	);
+}
+
+#define dup_pr(...) do{printf(__VA_ARGS__); if(fout) fprintf(fout, __VA_ARGS__);}while(0)
+
+/**
+ * Set/reset nineth bit and send command
+ * @param
+ * @return
+ */
+void send_with_9(unsigned char cmd, int nineth){
+	if(crc(cmd) ^ nineth) // (ODD CRC) XOR (set nineth) -> odd parity
+		tty.c_cflag |= PARODD; // odd parity
+	else
+		tty.c_cflag &= ~PARODD; // even parity
+	if(ioctl(comfd, TCSETA, &tty) < 0){
+		perror("Ioctl");
+		quit(2);
+	}
+	if(write(comfd, &cmd, 1) < 1){
+		perror("Can't write to port");
+		quit(2);
+	}
+}
+
+void con_sig(int rb){
+	if(rb < 1) return;
+	if(rb == 'q') quit(0); // q == exit
+	else if(rb == 'H'){ // this program help
+		help();
+		return;
+	}
+	send_with_9((unsigned char)rb, 0); // just send command with zero nineth bit
+}
+
+/**
+ * Get integer value from buffer
+ * @param buff (i) - buffer with int
+ * @param len      - length of data in buffer (could be 2 or 4)
+ * @return
+ */
+uint32_t get_int(uint8_t *buff, size_t len){
+	if(len != 2 && len != 4){
+		fprintf(stdout, "Bad data length!\n");
+		return 0xffffffff;
+	}
+	uint32_t data = 0;
+	uint8_t *i8 = (uint8_t*) &data;
+	if(len == 2) memcpy(i8, buff, 2);
+	else memcpy(i8, buff, 4);
+	return data;
+}
+
+int main(int argc, char *argv[]){
+	int rb;
+	uint8_t buff[128];
+	size_t L;
+	if(argc == 2){
+		fout = fopen(argv[1], "a");
+		if(!fout){
+			perror("Can't open output file");
+			exit(-1);
+		}
+		setbuf(fout, NULL);
+	}
+	tty_init();
+	signal(SIGTERM, quit);		// kill (-15)
+	signal(SIGINT, quit);		// ctrl+C
+	signal(SIGQUIT, SIG_IGN);	// ctrl+\   .
+	signal(SIGTSTP, SIG_IGN);	// ctrl+Z
+	setbuf(stdout, NULL);
+	t0 = dtime();
+	while(1){
+		rb = read_console();
+		if(rb > 0) con_sig(rb);
+		L = read_tty(buff, 127);
+		if(L){
+			buff[L] = 0;
+			printf("%s", buff);
+			if(fout) fprintf(fout, "%zd\t%s\n", time(NULL), buff);
+		}
+	}
+}
diff --git a/distance_meter/interrupts.c b/distance_meter/interrupts.c
new file mode 100644
index 0000000..d016a07
--- /dev/null
+++ b/distance_meter/interrupts.c
@@ -0,0 +1,205 @@
+/*
+ * interrupts.c
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include "ports_definition.h"
+#include "main.h"
+
+// Top Level Interrupt
+INTERRUPT_HANDLER(TLI_IRQHandler, 0){}
+
+// Auto Wake Up Interrupt
+INTERRUPT_HANDLER(AWU_IRQHandler, 1){}
+
+// Clock Controller Interrupt
+INTERRUPT_HANDLER(CLK_IRQHandler, 2){}
+
+// External Interrupt PORTA
+INTERRUPT_HANDLER(EXTI_PORTA_IRQHandler, 3){}
+
+// External Interrupt PORTB
+INTERRUPT_HANDLER(EXTI_PORTB_IRQHandler, 4){}
+
+// External Interrupt PORTC
+INTERRUPT_HANDLER(EXTI_PORTC_IRQHandler, 5){}
+
+// External Interrupt PORTD
+INTERRUPT_HANDLER(EXTI_PORTD_IRQHandler, 6){}
+
+// External Interrupt PORTE
+INTERRUPT_HANDLER(EXTI_PORTE_IRQHandler, 7){}
+
+#ifdef STM8S903
+// External Interrupt PORTF
+INTERRUPT_HANDLER(EXTI_PORTF_IRQHandler, 8){}
+#endif // STM8S903
+
+#if defined (STM8S208) || defined (STM8AF52Ax)
+// CAN RX Interrupt routine.
+INTERRUPT_HANDLER(CAN_RX_IRQHandler, 8){}
+
+// CAN TX Interrupt routine.
+INTERRUPT_HANDLER(CAN_TX_IRQHandler, 9){}
+#endif // STM8S208 || STM8AF52Ax
+
+// SPI Interrupt routine.
+INTERRUPT_HANDLER(SPI_IRQHandler, 10){}
+
+volatile U8 in_measure; // flag of measurenent
+// Timer1 Update/Overflow/Trigger/Break Interrupt
+// in_measure == 1 means that we will get wrong result as pulse length is too long
+// pulse of 65536us is 32768us to something == near 11 meters
+INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11){
+	TIM1_SR1 &= ~TIM_SR1_UIF; // clear this flag
+	if(!in_measure) return; // not process when there's nothing started
+	//uart_write("OVF\n");
+	US_flag = 3;
+	TIM1_SR1 = 0;
+	TIM1_SR2 = 0;
+	TIM1_CR1 = 0;TIM1_CCER1 &= ~0x11; // stop timer
+	in_measure = 0;
+}
+
+// Timer1 Capture/Compare Interrupt routine.
+// pulse width measurement: PC1 - TIM1_CH1
+INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12){
+	/*U16 P = TIM1_CNTRH;
+	P |= TIM1_CNTRL << 8;
+	printUint((U8*)&P,2);
+	printUint(&TIM1_CCR2H,1);
+	printUint(&TIM1_CCR2L,1);
+	printUint(&TIM1_CCR1H,1);
+	printUint(&TIM1_CCR1L,1);
+	printUint(&TIM1_CNTRH,1);
+	printUint(&TIM1_CNTRL,1);*/
+	//Pulse_length =  ((U16)TIM1_CCR2H << 8) | TIM1_CCR2L;
+	if(TIM1_SR1 & TIM_SR1_CC2IF){
+		TIM1_SR1 = 0; // clear all interrupt flags
+		TIM1_CR1 = 0;TIM1_CCER1 &= ~0x11; // stop timer
+		in_measure = 0; // work done
+	//	uart_write("CCR2\n");
+		if(TIM1_SR2){ // overcapture: noice etc.
+			TIM1_SR2 = 0;
+			US_flag = 1;
+		}else{
+			US_flag = 2;
+		}
+	}
+	if(TIM1_SR1 & TIM_SR1_CC1IF){
+		TIM1_SR1 &= ~TIM_SR1_CC1IF; // clear this interrupt flags
+		in_measure = 1; // start of measurement
+	//	uart_write("CCR1\n");
+	/*	TIM1_CNTRH = 0; TIM1_CNTRL = 0;
+		TIM1_CCR2H = 0; TIM1_CCR2L = 0;
+		TIM1_CCR1H = 0; TIM1_CCR1L = 0;*/
+	}
+}
+
+#ifdef STM8S903
+// Timer5 Update/Overflow/Break/Trigger Interrupt
+INTERRUPT_HANDLER(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13){}
+
+// Timer5 Capture/Compare Interrupt
+INTERRUPT_HANDLER(TIM5_CAP_COM_IRQHandler, 14){}
+
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+// Timer2 Update/Overflow/Break Interrupt
+INTERRUPT_HANDLER(TIM2_UPD_OVF_BRK_IRQHandler, 13){}
+
+// Timer2 Capture/Compare Interrupt
+INTERRUPT_HANDLER(TIM2_CAP_COM_IRQHandler, 14){}
+#endif // STM8S903
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
+    defined(STM8S005) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
+// Timer3 Update/Overflow/Break Interrupt
+INTERRUPT_HANDLER(TIM3_UPD_OVF_BRK_IRQHandler, 15){}
+
+// Timer3 Capture/Compare Interrupt
+INTERRUPT_HANDLER(TIM3_CAP_COM_IRQHandler, 16){}
+#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
+    defined(STM8S003) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
+// UART1 TX Interrupt
+INTERRUPT_HANDLER(UART1_TX_IRQHandler, 17){}
+
+// UART1 RX Interrupt
+INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18){}
+#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
+
+// I2C Interrupt
+INTERRUPT_HANDLER(I2C_IRQHandler, 19){}
+
+#if defined(STM8S105) || defined(STM8S005) ||  defined (STM8AF626x)
+// UART2 TX interrupt
+INTERRUPT_HANDLER(UART2_TX_IRQHandler, 20){}
+
+// UART2 RX interrupt
+INTERRUPT_HANDLER(UART2_RX_IRQHandler, 21){
+	U8 rb;
+	if(UART2_SR & UART_SR_RXNE){ // data received
+		rb = UART2_DR; // read received byte & clear RXNE flag
+		UART_send_byte(rb); // echo received symbol
+		UART_rx[UART_rx_cur_i++] = rb; // put received byte into cycled buffer
+		if(UART_rx_cur_i == UART_rx_start_i){ // Oops: buffer overflow! Just forget old data
+			UART_rx_start_i++;
+			check_UART_pointer(UART_rx_start_i);
+		}
+		check_UART_pointer(UART_rx_cur_i);
+	}
+}
+#endif // STM8S105 or STM8AF626x
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// UART3 TX interrupt
+INTERRUPT_HANDLER(UART3_TX_IRQHandler, 20){}
+
+// UART3 RX interrupt
+INTERRUPT_HANDLER(UART3_RX_IRQHandler, 21){}
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// ADC2 interrupt
+INTERRUPT_HANDLER(ADC2_IRQHandler, 22){}
+#else
+// ADC1 interrupt
+INTERRUPT_HANDLER(ADC1_IRQHandler, 22){
+	ADC_value = ADC_DRL; // in right-alignment mode we should first read LSB
+	ADC_value |= ADC_DRH << 8;
+	ADC_CSR &= 0x3f; // clear EOC & AWD flags
+}
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#ifdef STM8S903
+// Timer6 Update/Overflow/Trigger Interrupt
+INTERRUPT_HANDLER(TIM6_UPD_OVF_TRG_IRQHandler, 23){}
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
+// Timer4 Update/Overflow Interrupt
+INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23){
+	if(TIM4_SR & TIM_SR1_UIF){ // update interrupt
+		Global_time++; // increase timer
+	}
+	TIM4_SR = 0; // clear all interrupt flags
+}
+#endif // STM8S903
+
+// Eeprom EEC Interrupt
+INTERRUPT_HANDLER(EEPROM_EEC_IRQHandler, 24){}
diff --git a/distance_meter/interrupts.h b/distance_meter/interrupts.h
new file mode 100644
index 0000000..6edf384
--- /dev/null
+++ b/distance_meter/interrupts.h
@@ -0,0 +1,144 @@
+/*
+ * interrupts.h
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#pragma once
+#ifndef __INTERRUPTS_H__
+#define __INTERRUPTS_H__
+
+#include "stm8l.h"
+
+// Top Level Interrupt
+INTERRUPT_DEFINITION(TLI_IRQHandler, 0);
+
+// Auto Wake Up Interrupt
+INTERRUPT_DEFINITION(AWU_IRQHandler, 1);
+
+// Clock Controller Interrupt
+INTERRUPT_DEFINITION(CLK_IRQHandler, 2);
+
+// External Interrupt PORTA
+INTERRUPT_DEFINITION(EXTI_PORTA_IRQHandler, 3);
+
+// External Interrupt PORTB
+INTERRUPT_DEFINITION(EXTI_PORTB_IRQHandler, 4);
+
+// External Interrupt PORTC
+INTERRUPT_DEFINITION(EXTI_PORTC_IRQHandler, 5);
+
+// External Interrupt PORTD
+INTERRUPT_DEFINITION(EXTI_PORTD_IRQHandler, 6);
+
+// External Interrupt PORTE
+INTERRUPT_DEFINITION(EXTI_PORTE_IRQHandler, 7);
+
+#ifdef STM8S903
+// External Interrupt PORTF
+INTERRUPT_DEFINITION(EXTI_PORTF_IRQHandler, 8);
+#endif // STM8S903
+
+#if defined (STM8S208) || defined (STM8AF52Ax)
+// CAN RX Interrupt routine.
+INTERRUPT_DEFINITION(CAN_RX_IRQHandler, 8);
+
+// CAN TX Interrupt routine.
+INTERRUPT_DEFINITION(CAN_TX_IRQHandler, 9);
+#endif // STM8S208 || STM8AF52Ax
+
+// SPI Interrupt routine.
+INTERRUPT_DEFINITION(SPI_IRQHandler, 10);
+
+// Timer1 Update/Overflow/Trigger/Break Interrupt
+INTERRUPT_DEFINITION(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11);
+
+// Timer1 Capture/Compare Interrupt routine.
+INTERRUPT_DEFINITION(TIM1_CAP_COM_IRQHandler, 12);
+
+#ifdef STM8S903
+// Timer5 Update/Overflow/Break/Trigger Interrupt
+INTERRUPT_DEFINITION(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13);
+
+// Timer5 Capture/Compare Interrupt
+INTERRUPT_DEFINITION(TIM5_CAP_COM_IRQHandler, 14);
+
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+// Timer2 Update/Overflow/Break Interrupt
+INTERRUPT_DEFINITION(TIM2_UPD_OVF_BRK_IRQHandler, 13);
+
+// Timer2 Capture/Compare Interrupt
+INTERRUPT_DEFINITION(TIM2_CAP_COM_IRQHandler, 14);
+#endif // STM8S903
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
+    defined(STM8S005) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
+// Timer3 Update/Overflow/Break Interrupt
+INTERRUPT_DEFINITION(TIM3_UPD_OVF_BRK_IRQHandler, 15);
+
+// Timer3 Capture/Compare Interrupt
+INTERRUPT_DEFINITION(TIM3_CAP_COM_IRQHandler, 16);
+#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
+
+#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
+    defined(STM8S003) ||  defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
+// UART1 TX Interrupt
+INTERRUPT_DEFINITION(UART1_TX_IRQHandler, 17);
+
+// UART1 RX Interrupt
+INTERRUPT_DEFINITION(UART1_RX_IRQHandler, 18);
+#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
+
+// I2C Interrupt
+INTERRUPT_DEFINITION(I2C_IRQHandler, 19);
+
+#if defined(STM8S105) || defined(STM8S005) ||  defined (STM8AF626x)
+// UART2 TX interrupt
+INTERRUPT_DEFINITION(UART2_TX_IRQHandler, 20);
+
+// UART2 RX interrupt
+INTERRUPT_DEFINITION(UART2_RX_IRQHandler, 21);
+#endif // STM8S105 or STM8AF626x
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// UART3 TX interrupt
+INTERRUPT_DEFINITION(UART3_TX_IRQHandler, 20);
+
+// UART3 RX interrupt
+INTERRUPT_DEFINITION(UART3_RX_IRQHandler, 21);
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
+// ADC2 interrupt
+INTERRUPT_DEFINITION(ADC2_IRQHandler, 22);
+#else // STM8S105, STM8S103 or STM8S903 or STM8AF626x
+// ADC1 interrupt
+INTERRUPT_DEFINITION(ADC1_IRQHandler, 22);
+#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
+
+#ifdef STM8S903
+// Timer6 Update/Overflow/Trigger Interrupt
+INTERRUPT_DEFINITION(TIM6_UPD_OVF_TRG_IRQHandler, 23);
+#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
+// Timer4 Update/Overflow Interrupt
+INTERRUPT_DEFINITION(TIM4_UPD_OVF_IRQHandler, 23);
+#endif // STM8S903
+
+// Eeprom EEC Interrupt
+INTERRUPT_DEFINITION(EEPROM_EEC_IRQHandler, 24);
+
+#endif // __INTERRUPTS_H__
diff --git a/distance_meter/main.c b/distance_meter/main.c
new file mode 100644
index 0000000..4afd22e
--- /dev/null
+++ b/distance_meter/main.c
@@ -0,0 +1,389 @@
+/*
+ * main.c
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include "stm8l.h"
+#include "ports_definition.h"
+#include "interrupts.h"
+#include "main.h"
+
+/*
+ * 0 0000
+ * 1 0001
+ * 2 0010
+ * 3 0011
+ * 4 0100
+ * 5 0101
+ * 6 0110
+ * 7 0111
+ * 8 1000
+ * 9 1001
+ * a 1010
+ * b 1011
+ * c 1100
+ * d 1101
+ * e 1110
+ * f 1111
+ */
+
+unsigned long Global_time = 0L; // global time in ms
+U16 paused_val = 500; // interval between LED flashing
+
+volatile U16 ADC_value = 0; // value of last ADC measurement
+
+volatile U16 Pulse_length = 11; // length of ultrasonic echo pulse
+U8 US_flag = 0;// 0 - conversion in progress; 1 - conversion error; 2 - conversion done; 3 - overflow
+
+U8 UART_rx[UART_BUF_LEN]; // cycle buffer for received data
+U8 UART_rx_start_i = 0;   // started index of received data (from which reading starts)
+U8 UART_rx_cur_i = 0;     // index of current first byte in rx array (to which data will be written)
+// ATTENTION! to change global variable in PROGRAM memory, it should be CONST!!!
+//const U8 UART_devNUM = THIS_DEVICE_NUM; // device number, master sais it
+
+/**
+ * Send one byte through UART
+ * @param byte - data to send
+ */
+void UART_send_byte(U8 byte){
+	UART2_DR = byte;
+	while(!(UART2_SR & UART_SR_TC));
+}
+
+void uart_write(char *str){
+	while(*str){
+		UART2_DR = *str++;
+		while(!(UART2_SR & UART_SR_TC));
+	}
+}
+
+/**
+ * Read one byte from Rx buffer
+ * @param byte - where to store readed data
+ * @return 1 in case of non-empty buffer
+ */
+U8 UART_read_byte(U8 *byte){
+	if(UART_rx_start_i == UART_rx_cur_i) // buffer is empty
+		return 0;
+	*byte = UART_rx[UART_rx_start_i++];
+	check_UART_pointer(UART_rx_start_i);
+	return 1;
+}
+
+void printUint(U8 *val, U8 len){
+	unsigned long Number = 0;
+	U8 i = len;
+	char ch;
+	U8 decimal_buff[12]; // max len of U32 == 10 + \n + \0
+	if(len > 4 || len == 3 || len == 0) return;
+	for(i = 0; i < 12; i++)
+		decimal_buff[i] = 0;
+	decimal_buff[10] = '\n';
+	ch = 9;
+	switch(len){
+		case 1:
+			Number = *((U8*)val);
+			break;
+		case 2:
+			Number = *((U16*)val);
+		break;
+		case 4:
+			Number = *((unsigned long*)val);
+		break;
+	}
+	do{
+		i = Number % 10L;
+		decimal_buff[ch--] = i + '0';
+		Number /= 10L;
+	}while(Number && ch > -1);
+	uart_write((char*)&decimal_buff[ch+1]);
+}
+/*
+U8 U8toHEX(U8 val){
+	val &= 0x0f;
+	if(val < 10) val += '0';
+	else val += 'a' - 10;
+	return val;
+}
+
+void printUintHEX(U8 *val, U8 len){
+	U8 i, V;
+	uart_write("0x");
+	for(i = 0; i < len; i++){
+		V = *val++;
+		UART_send_byte(U8toHEX(V>>4)); // MSB
+		UART_send_byte(U8toHEX(V));    // LSB
+	}
+	UART_send_byte('\n');
+}*/
+
+U8 readInt(int *val){
+	unsigned long T = Global_time;
+	unsigned long R = 0;
+	int readed;
+	U8 sign = 0, rb, ret = 0, bad = 0;
+	do{
+		if(!UART_read_byte(&rb)) continue;
+		if(rb == '-' && R == 0){ // negative number
+			sign = 1;
+			continue;
+		}
+		if(rb < '0' || rb > '9') break; // number ends with any non-digit symbol that will be omitted
+		ret = 1; // there's at least one digit
+		R = R * 10L + rb - '0';
+		if(R > 0x7fff){ // bad value
+			R = 0;
+			bad = 0;
+		}
+	}while(Global_time - T < 10000); // wait no longer than 10s
+	if(bad || !ret) return 0;
+	readed = (int) R;
+	if(sign) readed *= -1;
+	*val = readed;
+	return 1;
+}
+
+void error_msg(char *msg){
+	uart_write("\nERROR: ");
+	uart_write(msg);
+	UART_send_byte('\n');
+}
+
+/**
+ * Change variable stored in program memory
+ * !!! You can change only const values (non-constants are initializes on program start)
+ * @param addr - variable address
+ * @param new value
+ * @return 0 in case of error
+ */
+U8 change_progmem_value(U8 *addr, U8 val){
+	// unlock memory
+	FLASH_PUKR = EEPROM_KEY2;
+	FLASH_PUKR = EEPROM_KEY1;
+	// check bit PUL=1 in FLASH_IAPSR
+	if(!FLASH_IAPSR & 0x02)
+		return 0;
+	*addr = val;
+	// clear PUL to lock write
+	FLASH_IAPSR &= ~0x02;
+	return 1;
+}
+
+/*
+U8 change_eeprom_value(U8 *addr, U8 val){
+	// unlock memory
+	FLASH_DUKR = EEPROM_KEY1;
+	FLASH_DUKR = EEPROM_KEY2;
+	// check bit DUL=1 in FLASH_IAPSR
+	if(!FLASH_IAPSR & 0x08)
+		return 0;
+	*addr = val;
+	// clear DUL to lock write
+	FLASH_IAPSR &= ~0x08;
+	return 1;
+}
+*/
+
+/**
+ * Start measurements by ultrasonic distance meter
+ * @param
+ * @return
+ */
+void US_start(){
+	U8 i;
+	TIM1_CNTRH = 0; TIM1_CNTRL = 0;
+	TIM1_CCR2H = 0; TIM1_CCR2L = 0;
+	US_flag = 0;
+	// post initial pulse
+	PORT(US_OUT_PORT, ODR) |= US_OUT_PIN;
+	for(i = 0; i < 160; i++) nop(); // wait at least for 10us
+	PORT(US_OUT_PORT, ODR) &= ~US_OUT_PIN;
+	// Enable the captures by writing the CC1E and CC2E bits to 1 in the TIM1_CCER1 register.
+	TIM1_CCER1 |= 0x11;
+	TIM1_CR1 = TIM_CR1_CEN; // turn on timer
+}
+
+/**
+ * Check ultrasonic flag value and send message
+ * @param
+ * @return
+ */
+void US_check(){
+	unsigned long L;
+	if(!US_flag) return;
+	if(US_flag == 1){ // error - write message
+		error_msg("measurement overcapture");
+	}else if(US_flag == 3){ // overflow
+		error_msg("TIM1 overflow");
+	}else{ // all OK - write measured length
+		Pulse_length =  ((U16)TIM1_CCR2H << 8) | TIM1_CCR2L;
+		printUint((U8*)&Pulse_length,2);
+		// sound velocity == 340m/s in normal conditions
+		// So distance = pulse * 1e-6(us) * 340 / 2
+		// in millimeters this is equal of pulse*170/1000
+		L = ((unsigned long) Pulse_length) * 170L;
+		L /= 1000L;
+		uart_write("Distance (mm): ");
+		printUint((U8*)&L, 4);
+	}
+	US_flag = 0;
+}
+
+int main(){
+	unsigned long T = 0L;
+	//int Ival;
+//	unsigned long ul;
+//	U16 u16;
+	U8 rb;
+
+	CFG_GCR |= 1; // disable SWIM
+
+	// Configure clocking
+	CLK_CKDIVR = 0; // F_HSI = 16MHz, f_CPU = 16MHz
+
+	// Timer 4 (8 bit) used as system tick timer
+	// prescaler == 128 (2^7), Tfreq = 125kHz
+	// period = 1ms, so ARR = 125
+	TIM4_PSCR = 7;
+	TIM4_ARR = 125;
+	// interrupts: update
+	TIM4_IER = TIM_IER_UIE;
+	// auto-reload + interrupt on overflow + enable
+	TIM4_CR1 = TIM_CR1_APRE | TIM_CR1_URS | TIM_CR1_CEN;
+
+	// Configure Timer1 for measurement of US pulse width:
+	// main frequency: 1MHz
+	// prescaler = f_{in}/f_{tim1} - 1
+	// set Timer1 to 1MHz: 16/1 - 1 = 15
+	TIM1_PSCRH = 0;
+	TIM1_PSCRL = 15; // LSB should be written last as it updates prescaler
+	// capture/compare channel
+	// channel CC1 (0->1) stores low pulse length,
+	// channel CC2 (1->0) stores time period between two consequent zero-transitions
+	TIM1_IER = TIM_IER_CC2IE | TIM_IER_CC1IE | TIM_IER_UIE;// enable interrupt on CC2 & overflow
+	// 1. Select the active input capture or trigger input for TIM1_CCR1 by writing the CC1S bits
+	// 		to 01 in the TIM1_CCMR1 register (TI1FP1 selected).
+	// IC1F = 0 - no filter
+	// IC1PSC = 0 - no prescaler
+	// TIM1_CCMR1: IC1F[3:0] | IC1PSC[1:0] | CC1S[1:0]
+	TIM1_CCMR1 = 1;
+	// 3. Select the active input for TIM1_CCR2 by writing the CC2S bits to 10 in the
+	//		TIM1_CCMR2 register (TI1FP2 selected).
+	TIM1_CCMR2 = 2;
+	// 2. Select the active polarity for TI1FP1 (used for both capture and counter clear in
+	// 		TIMx_CCR1) by writing the CC1P bit to 0 (TI1FP1 active on rising edge).
+	// 4. Select the active polarity for TI1FP2 (used for capture in TIM1_CCR2) by writing the
+	//		CC2P bit to 1 (TI1FP2 active on falling edge).
+	// TIM1_CCER1: CC2NP | CC2NE | CC2P | CC2E | CC1NP | CC1NE | CC1P | CC1E
+	TIM1_CCER1 = 0x20;
+	// 5. Select the valid trigger input by writing the TS bits to 101 in the
+	//		TIM1_SMCR register (TI1FP1 selected).
+	// 6. Configure the clock/trigger controller in reset mode by writing the
+	//		SMS bits to 100 in the TIM1_SMCR register
+	// TIM1_SMCR: MSM | TS[2:0] | (reserved) | SMS[2:0]
+	TIM1_SMCR = 0x54;
+
+
+	//TIM1_CR1 = 0;
+
+
+
+	// Configure ADC
+	// select PD2[AIN3] & enable interrupt for EOC
+	ADC_CSR = 0x23;
+	ADC_TDRL = 0x08; // disable Schmitt triger for AIN3
+	// right alignment
+	ADC_CR2 = 0x08; // don't forget: first read ADC_DRL!
+	// f_{ADC} = f/18 & continuous non-buffered conversion & wake it up
+	ADC_CR1 = 0x73;
+	ADC_CR1 = 0x73; // turn on ADC (this needs second write operation)
+
+	// Configure pins
+	// PC2 - PP output (on-board LED)
+	PORT(LED_PORT, DDR) |= LED_PIN;
+	PORT(LED_PORT, CR1) |= LED_PIN;
+	// PD5 - UART2_TX -- pseudo open-drain output; don't forget an pullup resistor!
+	PORT(UART_PORT, DDR) |= UART_TX_PIN;
+	PORT(UART_PORT, ODR) &= ~UART_TX_PIN; // turn off N push-down
+	//PORT(UART_PORT, CR1) |= UART_TX_PIN;
+	// Ultrasonic
+	// out, PP
+	PORT(US_OUT_PORT, DDR) |= US_OUT_PIN;
+	PORT(US_OUT_PORT, CR1) |= US_OUT_PIN;
+	//
+
+	// Configure UART
+	// 9 bit, no parity, 1 stop (UART_CR3 = 0 - reset value)
+	// 57600 on 16MHz: BRR1=0x11, BRR2=0x06
+	UART2_BRR1 = 0x11; UART2_BRR2 = 0x06;
+	UART2_CR1  = UART_CR1_M; // M = 1 -- 9bits
+	UART2_CR2  = UART_CR2_TEN | UART_CR2_REN | UART_CR2_RIEN; // Allow RX, generate ints on rx
+
+	// enable all interrupts
+	enableInterrupts();
+	// Loop
+	do{
+		if((Global_time - T > paused_val) || (T > Global_time)){
+			T = Global_time;
+			PORT(LED_PORT, ODR) ^= LED_PIN; // blink on-board LED
+		}
+		if(US_flag) US_check(); // end of measurement with ultrasonic?
+		if(UART_read_byte(&rb)){ // buffer isn't empty
+			switch(rb){
+				case 'h': // help
+				case 'H':
+					uart_write("\nPROTO:\n"
+						"+/-\tLED period\n"
+						"A\tprint ADC value\n"
+						"D\tmeasure distance by US\n"
+						);
+				break;
+				case '+':
+					paused_val += 100;
+					if(paused_val > 10000)
+						paused_val = 500; // but not more than 10s
+				break;
+				case '-':
+					paused_val -= 100;
+					if(paused_val < 100)  // but not less than 0.1s
+						paused_val = 500;
+				break;
+				case 'A':
+//					ul = ADC_value * 3300L;
+//					u16 = (U16)(ul >> 10); // 0..3300 - U in mv
+//					printUint((U8*)&u16,2);
+					printUint((U8*)&ADC_value,2);
+				break;
+				case 'D':
+					US_start();
+				break;
+/*				case 'N':
+					if(readInt(&Ival) && Ival > 0 && Ival < 256)
+						if(!change_progmem_value(&UART_devNUM, (unsigned int) Ival))
+							error_msg("can't change val");
+				break;
+*/
+				default:
+				break;
+			}
+		}
+	}while(1);
+}
+
+
diff --git a/distance_meter/main.h b/distance_meter/main.h
new file mode 100644
index 0000000..2341bc1
--- /dev/null
+++ b/distance_meter/main.h
@@ -0,0 +1,47 @@
+/*
+ * main.h
+ *
+ * Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#pragma once
+#ifndef __MAIN_H__
+#define __MAIN_H__
+
+extern unsigned long Global_time; // global time in ms
+
+#define UART_BUF_LEN 8			// max 7 bytes transmited in on operation
+
+extern U8 UART_rx[];
+extern U8 UART_rx_start_i;
+extern U8 UART_rx_cur_i;
+
+extern U8 US_flag;
+
+extern volatile U16 ADC_value ;
+extern volatile U16 Pulse_length;
+
+//extern const U8 UART_devNUM;
+
+void UART_send_byte(U8 byte);
+void uart_write(char *str);
+void printUint(U8 *val, U8 len);
+void error_msg(char *msg);
+
+#define check_UART_pointer(x) if(x == UART_BUF_LEN) x = 0;
+
+#endif // __MAIN_H__
diff --git a/distance_meter/ports_definition.h b/distance_meter/ports_definition.h
new file mode 100644
index 0000000..602afd7
--- /dev/null
+++ b/distance_meter/ports_definition.h
@@ -0,0 +1,48 @@
+/*
+ * ports_definition.h - definition of ports pins & so on
+ *
+ * Copyright 2014 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#pragma once
+#ifndef __PORTS_DEFINITION_H__
+#define __PORTS_DEFINITION_H__
+
+#include "stm8l.h"
+
+// macro for using in port constructions like PORT(LED_PORT, ODR) = xx
+#define CONCAT(a,b)		a##_##b
+#define PORT(a,b)		CONCAT(a,b)
+
+// on-board LED
+#define LED_PORT		PC
+#define LED_PIN			GPIO_PIN2
+
+// UART2_TX
+#define UART_PORT		PD
+#define UART_TX_PIN		GPIO_PIN5
+
+// Ultrasonic interface
+// out: PE5
+#define US_OUT_PORT		PE
+#define US_OUT_PIN		GPIO_PIN5
+// pulse width measurement: PC1 - TIM1_CH1
+#define US_IN_PORT		PC
+#define US_IN_PIN		GPIO_PIN1
+
+#endif // __PORTS_DEFINITION_H__