diff --git a/F1-nolib/DS18/DS18.bin b/F1-nolib/DS18/DS18.bin new file mode 100755 index 0000000..1609d46 Binary files /dev/null and b/F1-nolib/DS18/DS18.bin differ diff --git a/F1-nolib/DS18/Makefile b/F1-nolib/DS18/Makefile new file mode 100644 index 0000000..1097810 --- /dev/null +++ b/F1-nolib/DS18/Makefile @@ -0,0 +1,139 @@ +BINARY = DS18 +BOOTPORT ?= /dev/ttyUSB0 +BOOTSPEED ?= 115200 +# MCU FAMILY +FAMILY ?= F1 +# MCU code +MCU ?= F103x8 +# density (stm32f10x.h, lines 70-84) +DENSITY ?= MD +# change this linking script depending on particular MCU model, +LDSCRIPT ?= stm32f103x8.ld +# debug +#DEFS = -DEBUG + +INDEPENDENT_HEADERS= + +FP_FLAGS ?= -msoft-float -mfloat-abi=soft +ASM_FLAGS ?= -mthumb -mcpu=cortex-m3 -mfix-cortex-m3-ldrd +ARCH_FLAGS = $(ASM_FLAGS) $(FP_FLAGS) + +############################################################################### +# Executables +#PREFIX ?= arm-none-eabi +# gcc from arm web site +PREFIX ?= /opt/bin/arm-none-eabi +TOOLCHLIB ?= /opt/arm-none-eabi/lib +RM := rm -f +RMDIR := rmdir +CC := $(PREFIX)-gcc +# don't replace ld with gcc: the binary size would be much greater!! +LD := $(PREFIX)-ld +AR := $(PREFIX)-ar +AS := $(PREFIX)-as +SIZE := $(PREFIX)-size +OBJCOPY := $(PREFIX)-objcopy +OBJDUMP := $(PREFIX)-objdump +GDB := $(PREFIX)-gdb +STFLASH := $(shell which st-flash) +STBOOT := $(shell which stm32flash) +DFUUTIL := $(shell which dfu-util) + +############################################################################### +# Source files +OBJDIR = mk +SRC := $(wildcard *.c) +OBJS := $(addprefix $(OBJDIR)/, $(SRC:%.c=%.o)) +STARTUP = $(OBJDIR)/startup.o +OBJS += $(STARTUP) +# dependencies: we need them to recompile files if their headers-dependencies changed +DEPS := $(OBJS:.o=.d) + +INC_DIR ?= ../inc + +INCLUDE := -I$(INC_DIR)/Fx -I$(INC_DIR)/cm +LIB_DIR := $(INC_DIR)/ld + +############################################################################### +# C flags +CFLAGS += -O2 -g -D__thumb2__=1 -MD +CFLAGS += -Wall -Werror -Wextra -Wshadow +CFLAGS += -fno-common -ffunction-sections -fdata-sections -fno-stack-protector +CFLAGS += $(ARCH_FLAGS) + +############################################################################### +# Linker flags +LDFLAGS += -nostartfiles --static -nostdlibs +LDFLAGS += -L$(LIB_DIR) -L$(TOOLCHLIB) +LDFLAGS += -T$(LDSCRIPT) + +############################################################################### +# Used libraries +LDLIBS += -lc $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) + +DEFS += -DSTM32$(FAMILY) -DSTM32$(MCU) -DSTM32F10X_$(DENSITY) + +ELF := $(OBJDIR)/$(BINARY).elf +LIST := $(OBJDIR)/$(BINARY).list +BIN := $(BINARY).bin +HEX := $(BINARY).hex + +all: bin list size + +elf: $(ELF) +bin: $(BIN) +hex: $(HEX) +list: $(LIST) + +ifneq ($(MAKECMDGOALS),clean) +-include $(DEPS) +endif + +$(OBJDIR): + mkdir $(OBJDIR) + +$(STARTUP): $(INC_DIR)/startup/vector.c + $(CC) $(CFLAGS) $(DEFS) $(INCLUDE) -o $@ -c $< + +$(OBJDIR)/%.o: %.c + @echo " CC $<" + $(CC) $(CFLAGS) $(DEFS) $(INCLUDE) -o $@ -c $< + +$(BIN): $(ELF) + @echo " OBJCOPY $(BIN)" + $(OBJCOPY) -Obinary $(ELF) $(BIN) + +$(HEX): $(ELF) + @echo " OBJCOPY $(HEX)" + $(OBJCOPY) -Oihex $(ELF) $(HEX) + +$(LIST): $(ELF) + @echo " OBJDUMP $(LIST)" + $(OBJDUMP) -S $(ELF) > $(LIST) + +$(ELF): $(OBJDIR) $(OBJS) + @echo " LD $(ELF)" + $(LD) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $(ELF) + +size: $(ELF) + $(SIZE) $(ELF) + +clean: + @echo " CLEAN" + $(RM) $(OBJS) $(DEPS) $(ELF) $(HEX) $(LIST) + @rmdir $(OBJDIR) 2>/dev/null || true + + +flash: $(BIN) + @echo " FLASH $(BIN)" + $(STFLASH) write $(BIN) 0x8000000 + +boot: $(BIN) + @echo " LOAD $(BIN) through bootloader" + $(STBOOT) -b$(BOOTSPEED) $(BOOTPORT) -w $(BIN) + +dfuboot: $(BIN) + @echo " LOAD $(BIN) THROUGH DFU" + $(DFUUTIL) -a0 -D $(BIN) -s 0x08000000 + +.PHONY: clean flash boot diff --git a/F1-nolib/DS18/Readme b/F1-nolib/DS18/Readme new file mode 100644 index 0000000..06406a4 --- /dev/null +++ b/F1-nolib/DS18/Readme @@ -0,0 +1,2 @@ +Timer1 + DMA to work with DS18/DHT11 sensors +#define DHT11 in dht.h to change data format to DHT11 diff --git a/F1-nolib/DS18/ds18.c b/F1-nolib/DS18/ds18.c new file mode 100644 index 0000000..a4ff4ad --- /dev/null +++ b/F1-nolib/DS18/ds18.c @@ -0,0 +1,438 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#include "ds18.h" +#include "proto.h" + + +//#define EBUG + +#ifdef EBUG +#include "usb.h" +#define DBG(x) do{USB_send(x);}while(0) +#else +#define DBG(x) +#endif + +/* TIMING */ +// freq = 1MHz +// ARR values: 1000 for reset, 100 for data in/out +// CCR1 values: 500 for reset, 60 for sending 0 or reading, <15 for sending 1 +// CCR2 values: >550 if there's devices on line (on reset), >12 (typ.15) - read 0, < 12 (typ.1) - read 1 +#define RESET_LEN ((uint16_t)1000) +#define BIT_LEN ((uint16_t)100) +#define RESET_P ((uint16_t)500) +#define BIT_ONE_P ((uint16_t)10) +#define BIT_ZERO_P ((uint16_t)80) +#define BIT_READ_P ((uint16_t)5) +#define RESET_BARRIER ((uint16_t)550) +#define ONE_ZERO_BARRIER ((uint16_t)10) + +// answer for polling: conversion done +#define CONVERSION_DONE (0xff) + +/* + * thermometer commands + * send them with bus reset! + */ +// find devices +#define OW_SEARCH_ROM (0xf0) +// read device (when it is alone on the bus) +#define OW_READ_ROM (0x33) +// send device ID (after this command - 8 bytes of ID) +#define OW_MATCH_ROM (0x55) +// broadcast command +#define OW_SKIP_ROM (0xcc) +// find devices with critical conditions +#define OW_ALARM_SEARCH (0xec) +/* + * thermometer functions + * send them without bus reset! + */ +// start themperature reading +#define OW_CONVERT_T (0x44) +// write critical temperature to device's RAM +#define OW_SCRATCHPAD (0x4e) +// read whole device flash +#define OW_READ_SCRATCHPAD (0xbe) +// copy critical themperature from device's RAM to its EEPROM +#define OW_COPY_SCRATCHPAD (0x48) +// copy critical themperature from EEPROM to RAM (when power on this operation runs automatically) +#define OW_RECALL_E2 (0xb8) +// check whether there is devices wich power up from bus +#define OW_READ_POWER_SUPPLY (0xb4) + +/* + * thermometer identificator is: 8bits CRC, 48bits serial, 8bits device code (10h) + * Critical temperatures is T_H and T_L + * T_L is lowest allowed temperature + * T_H is highest -//- + * format T_H and T_L: 1bit sigh + 7bits of data + */ + + +/* + * RAM register: + * 0 - themperature: 1 ADU == 0.5 degrC + * 1 - sign (0 - T>0 degrC ==> T=byte0; 1 - T<0 degrC ==> T=byte0-0xff+1) + * 2 - T_H + * 3 - T_L + * 4 - 0xff (reserved) + * 5 - 0xff (reserved) + * 6 - COUNT_REMAIN (0x0c) + * 7 - COUNT PER DEGR (0x10) + * 8 - CRC + */ + +// max amount of bits (1bytes x 8bits) +#define NmeasurementMax (88) +// reset pulse length (ms+1..2) +#define DS18_RESETPULSE_LEN (3) +// max length of measurement (ms+1..2) +#define DS18_MEASUR_LEN (800) +// maximal received data bytes +#define IMAXCTR (10) + +static void (*ow_process_resdata)() = NULL; // what to do with received data + +static DS18_state dsstate = DS18_SLEEP; +static uint32_t Tstart = 0; // time of start pulse +// sent data, + 1 zero for last +static uint8_t CC1array[NmeasurementMax]; +static uint8_t totbytesctr = 0; // total (i/o) data bytes counter +static int cc1buff_ctr = 0; +// received data +static uint8_t CC2array[NmeasurementMax]; +static uint8_t receivectr = 0; // data bytes amount to receive +// prepare buffers to sending +#define OW_reset_buffer() do{cc1buff_ctr = 0; receivectr = 0; totbytesctr = 0;}while(0) + +/** + * add next data byte + * @param ow_byte - byte to convert + */ +static uint8_t OW_add_byte(uint8_t ow_byte){ + uint8_t i, byte; + for(i = 0; i < 8; i++){ + if(ow_byte & 0x01){ + byte = BIT_ONE_P; + }else{ + byte = BIT_ZERO_P; + } + if(cc1buff_ctr == NmeasurementMax){ + DBG("Tim2 buffer overflow\n"); + return 0; // avoid buffer overflow + } + CC1array[cc1buff_ctr++] = byte; + ow_byte >>= 1; + } + ++totbytesctr; + return 1; +} + +/** + * Adds Nbytes bytes 0xff for reading sequence + */ +static uint8_t OW_add_read_seq(uint8_t Nbytes){ + uint8_t i; + if(Nbytes == 0) return 0; + totbytesctr += Nbytes; + receivectr += Nbytes; + Nbytes *= 8; // 8 bits for each byte + for(i = 0; i < Nbytes; i++){ + if(cc1buff_ctr == NmeasurementMax){ + DBG("Tim2 buffer overflow\n"); + return 0; + } + CC1array[cc1buff_ctr++] = BIT_READ_P; + } + DBG("add rseq, rctr="); DBG(i2str(receivectr)); DBG("\n"); + return 1; +} + +// read received data (not more than IMAXCTR bytes!) +static uint8_t *OW_readbuf(){ +#ifdef EBUG + DBG("ctr1="); DBG(u2str(DMA1_Channel2->CNDTR)); DBG("\n"); + DBG("ctr2="); DBG(u2str(DMA1_Channel3->CNDTR)); DBG("\n"); + DBG("\nn\tCC1\tCC2\n"); + for(int i = 0; i < cc1buff_ctr; ++i){ + DBG(u2str(i)); DBG("\t"); DBG(u2str(CC1array[i])); + DBG("\t"); DBG(u2str(CC2array[i])); DBG("\n"); + } +#endif + static uint8_t got[IMAXCTR]; + uint8_t *gptr = got; + DBG("rctr="); DBG(i2str(receivectr)); DBG("\n"); + if(receivectr > IMAXCTR || receivectr == 0) return NULL; + uint8_t startidx = (totbytesctr - receivectr) * 8; + for(int i = startidx; i < cc1buff_ctr;){ + uint8_t byte = 0; + for(int j = 0; j < 8; ++j){ + byte >>= 1; + if(CC2array[i++] < ONE_ZERO_BARRIER) byte |= 0x80; + } + *gptr++ = byte; +#ifdef EBUG + USB_send("byte: "); printhex(byte); USB_send("\n"); +#endif + } + return got; +} + +DS18_state DS18_getstate(){return dsstate;} + +static void DS18_detect(){ + DBG("DS18_detect()\n"); + TIM1->ARR = RESET_LEN; + TIM1->CCR1 = RESET_P; + TIM1->CCR2 = 0; // after interrupt it should be RESET_P+Tpdhigh+Tpdlow (575..800ms) + TIM1->EGR = TIM_EGR_UG; // generate update to put CCR1 from buffer into register + TIM1->SR = 0; + // enable update IRQ + TIM1->DIER = TIM_DIER_UIE; + TIM1->CCR1 = 0; // next time level should be max + // PA8 as AF opendrain output + GPIOA->CRH = (GPIOA->CRH & ~(GPIO_CRH_MODE8 | GPIO_CRH_CNF8)) | + CRH(8, CNF_AFOD | MODE_FAST); + // turn TIM1 on in OPM mode + TIM1->CR1 = TIM_CR1_CEN | TIM_CR1_OPM | TIM_CR1_URS; + dsstate = DS18_DETECTING; +} + +static void DS18_getReg(int n){ + uint8_t *r = OW_readbuf(); + if(!r || receivectr != n){ + DBG("Bad read value!\n"); + return; + } + printsp(r, n); +} + +// data processing functions +static void DS18_gettemp(){ // calculate T + dsstate = DS18_SLEEP; +#ifdef EBUG + for(int i = 0; i < NmeasurementMax; ++i){ + DBG(u2str(i)); DBG("\t"); DBG(u2str(CC2array[i])); DBG("\n"); + } +#endif + uint8_t *r = OW_readbuf(); + if(!r || receivectr != 9){ + DBG("Bad count"); + dsstate = DS18_ERROR; + return; + } + uint16_t l = r[0], m = r[1], v; + int32_t t; + if(r[4] == 0xff){ // DS18S20 + t = ((uint32_t)l) * 10; + t >>= 1; + }else{ // DS18B20 + v = ((m & 7) << 8)| l; + t = ((uint32_t)v)*10; + t >>= 4; + } + if(m & 0x80) t = -t; + printT(t); +} +static void DS18_pollt(){ // poll T + uint8_t *r; + if((r = OW_readbuf()) && receivectr == 1){ + if(*r == CONVERSION_DONE){ + OW_reset_buffer(); + OW_add_byte(OW_SKIP_ROM); + OW_add_byte(OW_READ_SCRATCHPAD); + OW_add_read_seq(9); + ow_process_resdata = DS18_gettemp; + DS18_detect(); // reset + return; + } + } + OW_reset_buffer(); + OW_add_read_seq(1); // send read seq waiting for end of conversion + ow_process_resdata = DS18_pollt; + dsstate = DS18_RDYTOSEND; +} +static void DS18_getID(){ + DS18_getReg(8); +} +static void DS18_getSP(){ + DS18_getReg(9); +} + +// TIM1_CH1 & TIM1_CH2 are used for data sending & pulse length measurement +// T1ch1 - DMA1Ch2, T1ch2 - DMA1Ch3 +void DS18_pinsetup(){ + TIM1->CR1 = 0; + RCC->APB2ENR |= RCC_APB2ENR_IOPAEN | RCC_APB2ENR_TIM1EN | RCC_APB2ENR_AFIOEN; + RCC->AHBENR |= RCC_AHBENR_DMA1EN; + pin_set(GPIOA, 1<<8); // 1 @ line + // PA8 as opendrain output + GPIOA->CRH = (GPIOA->CRH & ~(GPIO_CRH_MODE8 | GPIO_CRH_CNF8)) | + CRH(8, CNF_ODOUTPUT | MODE_FAST); + TIM1->PSC = 71; // 1MHz + // CC1 is output (PWM mode 1, active->inactive, enable preload), CC2 is input @TI1 + TIM1->CCMR1 = TIM_CCMR1_OC1M_2 | TIM_CCMR1_OC1M_1 | TIM_CCMR1_OC1PE | + TIM_CCMR1_CC2S_1; + // enable CC1 & CC2, CC1 active low + TIM1->CCER = TIM_CCER_CC1E | TIM_CCER_CC2E | TIM_CCER_CC1P; + TIM1->DIER = 0; // disable IRQ & DMA events + // main output enable + TIM1->BDTR = TIM_BDTR_MOE; + // T1Ch2: per->mem, T1Ch1: mem->per; 16bit->8bit, + DMA1_Channel2->CCR = DMA_CCR_MINC | DMA_CCR_PSIZE_0 | DMA_CCR_TCIE | DMA_CCR_DIR; + DMA1_Channel3->CCR = DMA_CCR_MINC | DMA_CCR_PSIZE_0 | DMA_CCR_TCIE; + DMA1_Channel2->CPAR = (uint32_t)&TIM1->CCR1; + DMA1_Channel3->CPAR = (uint32_t)&TIM1->CCR2; + TIM1->CR1 = TIM_CR1_URS; // only ARR overflow generates interrupt + + NVIC_EnableIRQ(TIM1_UP_IRQn); // last interrupt to turn timer off + NVIC_EnableIRQ(DMA1_Channel2_IRQn); + dsstate = DS18_SLEEP; +} + +// start measurement +static void DS18_startmeas(uint32_t Tms){ + DBG("startmeas()\n"); + dsstate = DS18_READING; + Tstart = Tms; + DMA1->IFCR = DMA_IFCR_CGIF1 | DMA_IFCR_CGIF2; // clear all flags + DMA1_Channel2->CMAR = (uint32_t)CC1array; + DMA1_Channel3->CMAR = (uint32_t)CC2array; + DMA1_Channel2->CNDTR = cc1buff_ctr+1; // +1 for last works + DMA1_Channel3->CNDTR = cc1buff_ctr; + // enable both DMA channels + DMA1_Channel2->CCR |= DMA_CCR_EN; + DMA1_Channel3->CCR |= DMA_CCR_EN; + // enable DMA events generation + TIM1->DIER = TIM_DIER_CC1DE | TIM_DIER_CC2DE; + TIM1->ARR = BIT_LEN; + TIM1->SR = 0; + GPIOA->CRH = (GPIOA->CRH & ~(GPIO_CRH_MODE8 | GPIO_CRH_CNF8)) | + CRH(8, CNF_AFOD | MODE_FAST); + // turn TIM1 on + TIM1->CR1 = TIM_CR1_CEN | TIM_CR1_URS; +} + + +static void DS18_stopmeas(){ + DBG("stopmeas()\n"); + // stop timer + TIM1->CR1 = 0; + // disable DMA channel + DMA1_Channel2->CCR &= ~DMA_CCR_EN; + DMA1_Channel3->CCR &= ~DMA_CCR_EN; +#ifdef EBUG + DBG("ctr="); DBG(u2str(DMA1_Channel2->CNDTR)); DBG("\nn\tCC1\n"); + int nmax = NmeasurementMax - DMA1_Channel2->CNDTR; + for(int i = 0; i < nmax; ++i){ + DBG(u2str(i)); DBG("\t"); DBG(u2str(CC1array[i])); DBG("\n"); + } +#endif + dsstate = DS18_ERROR; +} + +// processing, Tms - current time in milliseconds +void DS18_process(uint32_t Tms){ + switch(dsstate){ + case DS18_DETDONE: + DBG("TIM1->CCR2="); DBG(u2str(TIM1->CCR2)); DBG("\n"); + /* DBG("SR="); DBG(u2str(TIM1->SR)); DBG("\n"); + if(TIM1->SR & TIM_SR_CC2OF){ + TIM1->SR = 0; DBG("Overcapture!\n"); + }*/ + if(TIM1->CCR2 > RESET_BARRIER) DS18_startmeas(Tms); + else dsstate = DS18_ERROR; + break; + case DS18_RDYTOSEND: // send data without reset pulse + DS18_startmeas(Tms); + break; + case DS18_READING: + if(Tms - Tstart > DS18_MEASUR_LEN) + DS18_stopmeas(); + break; + case DS18_GOTANSWER: + // disable DMA channels + DMA1_Channel2->CCR &= ~DMA_CCR_EN; + DMA1_Channel3->CCR &= ~DMA_CCR_EN; + dsstate = DS18_SLEEP; + if(ow_process_resdata) ow_process_resdata(); + break; + default: + return; + } +} + +int DS18_start(){ + if(dsstate != DS18_SLEEP && dsstate != DS18_ERROR) return 0; + OW_reset_buffer(); + OW_add_byte(OW_SKIP_ROM); + OW_add_byte(OW_CONVERT_T); + OW_add_read_seq(1); // send read seq waiting for end of conversion + DBG("start()\n"); + ow_process_resdata = DS18_pollt; // after data will be done calculate T and show it + DS18_detect(); + return 1; +} + +int DS18_readID(){ + if(dsstate != DS18_SLEEP && dsstate != DS18_ERROR) return 0; + OW_reset_buffer(); + OW_add_byte(OW_READ_ROM); + OW_add_read_seq(8); // wait for 8 bytes + ow_process_resdata = DS18_getID; + DBG("readID()\n"); + DS18_detect(); + return 1; +} + +int DS18_readScratchpad(){ + if(dsstate != DS18_SLEEP && dsstate != DS18_ERROR) return 0; + OW_reset_buffer(); + OW_add_byte(OW_SKIP_ROM); + OW_add_byte(OW_READ_SCRATCHPAD); + OW_add_read_seq(9); + ow_process_resdata = DS18_getSP; + DBG("readSP()\n"); + DS18_detect(); + return 1; +} + +void dma1_channel2_isr(){ // wait for last data bit + DMA1->IFCR = DMA_IFCR_CGIF2; + TIM1->CR1 |= TIM_CR1_OPM; + TIM1->CCR1 = 0; // don't go to zero + TIM1->SR &= ~TIM_SR_UIF; // clear update flag (or interrupt will run just now) + TIM1->DIER |= TIM_DIER_UIE; +} + +// update IRQ +void tim1_up_isr(){ + TIM1->SR = 0; // clear all flags (and overcapture too!) &= ~TIM_SR_UIF; + TIM1->CR1 = 0; + if(dsstate == DS18_DETECTING) dsstate = DS18_DETDONE; + else if(dsstate == DS18_READING) dsstate = DS18_GOTANSWER; +} + +void DS18_poll(){ + OW_reset_buffer(); + OW_add_read_seq(1); // send read seq waiting for end of conversion + ow_process_resdata = DS18_pollt; + dsstate = DS18_RDYTOSEND; +} diff --git a/F1-nolib/DS18/ds18.h b/F1-nolib/DS18/ds18.h new file mode 100644 index 0000000..7ab140e --- /dev/null +++ b/F1-nolib/DS18/ds18.h @@ -0,0 +1,46 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ +#pragma once +#ifndef DHT_H__ +#define DHT_H__ + +#include + + +// state of device +typedef enum{ + DS18_SLEEP, + DS18_RESETTING, + DS18_DETECTING, + DS18_DETDONE, + DS18_RDYTOSEND, + DS18_READING, + DS18_GOTANSWER, + DS18_ERROR +} DS18_state; + +void DS18_pinsetup(); +int DS18_start(); +int DS18_readID(); +DS18_state DS18_getstate(); +void DS18_process(uint32_t Tms); +int DS18_readScratchpad(); +void DS18_poll(); + +#endif // DHT_H__ + diff --git a/F1-nolib/DS18/hardware.c b/F1-nolib/DS18/hardware.c new file mode 100644 index 0000000..dcc7a26 --- /dev/null +++ b/F1-nolib/DS18/hardware.c @@ -0,0 +1,48 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#include "hardware.h" + +static inline void gpio_setup(){ + // Enable clocks to the GPIO subsystems (PB for ADC), turn on AFIO clocking to disable SWD/JTAG + RCC->APB2ENR |= RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPCEN | RCC_APB2ENR_AFIOEN; + // turn off SWJ/JTAG +// AFIO->MAPR = AFIO_MAPR_SWJ_CFG_DISABLE; + AFIO->MAPR = AFIO_MAPR_SWJ_CFG_JTAGDISABLE; // for PA15 + // Set led as opendrain output + GPIOC->CRH = CRH(13, CNF_ODOUTPUT|MODE_SLOW); + // USB pullup (PA15) - pushpull output + GPIOA->CRH = CRH(15, CNF_PPOUTPUT|MODE_SLOW); +} + +void hw_setup(){ + gpio_setup(); +} + +void iwdg_setup(){ + uint32_t tmout = 16000000; + RCC->CSR |= RCC_CSR_LSION; + while((RCC->CSR & RCC_CSR_LSIRDY) != RCC_CSR_LSIRDY){if(--tmout == 0) break;} /* (2) */ + IWDG->KR = IWDG_START; + IWDG->KR = IWDG_WRITE_ACCESS; + IWDG->PR = IWDG_PR_PR_1; + IWDG->RLR = 1250; + tmout = 16000000; + while(IWDG->SR){if(--tmout == 0) break;} + IWDG->KR = IWDG_REFRESH; +} diff --git a/F1-nolib/DS18/hardware.h b/F1-nolib/DS18/hardware.h new file mode 100644 index 0000000..c64e8b9 --- /dev/null +++ b/F1-nolib/DS18/hardware.h @@ -0,0 +1,42 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#pragma once +#ifndef __HARDWARE_H__ +#define __HARDWARE_H__ + +#include "stm32f1.h" + +// LED0 - PC13 (bluepill), blinking each second +#define LED0_port GPIOC +#define LED0_pin (1<<13) + +// USB pullup (not present in bluepill, should be soldered) - PA15 +#define USBPU_port GPIOA +#define USBPU_pin (1<<15) +#define USBPU_ON() pin_set(USBPU_port, USBPU_pin) +#define USBPU_OFF() pin_clear(USBPU_port, USBPU_pin) + +#define LED_blink(x) pin_toggle(x ## _port, x ## _pin) +#define LED_on(x) pin_clear(x ## _port, x ## _pin) +#define LED_off(x) pin_set(x ## _port, x ## _pin) + +void hw_setup(); +void iwdg_setup(); + +#endif // __HARDWARE_H__ diff --git a/F1-nolib/DS18/main.c b/F1-nolib/DS18/main.c new file mode 100644 index 0000000..0e0ab2a --- /dev/null +++ b/F1-nolib/DS18/main.c @@ -0,0 +1,92 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#include "ds18.h" +#include "hardware.h" +#include "proto.h" +#include "usb.h" +#include "usb_lib.h" + +volatile uint32_t Tms = 0; + +/* Called when systick fires */ +void sys_tick_handler(void){ + ++Tms; +} + +// usb getline +char *get_USB(){ + static char tmpbuf[512], *curptr = tmpbuf; + static int rest = 511; + uint8_t x = USB_receive(curptr); + curptr[x] = 0; + if(!x) return NULL; + if(curptr[x-1] == '\n'){ + curptr = tmpbuf; + rest = 511; + return tmpbuf; + } + curptr += x; rest -= x; + if(rest <= 0){ // buffer overflow + curptr = tmpbuf; + rest = 511; + } + return NULL; +} + +int main(void){ + uint32_t lastT = 0; + sysreset(); + StartHSE(); + hw_setup(); + SysTick_Config(72000); + + RCC->CSR |= RCC_CSR_RMVF; // remove reset flags + + USBPU_OFF(); + USB_setup(); + DS18_pinsetup(); + //iwdg_setup(); + USBPU_ON(); + + while (1){ + IWDG->KR = IWDG_REFRESH; // refresh watchdog + if(lastT > Tms || Tms - lastT > 499){ + LED_blink(LED0); + lastT = Tms; + } + DS18_process(Tms); + DS18_state st = DS18_getstate(); + if(st == DS18_ERROR){ + USB_send("Error with DS18, reinit\n"); + DS18_pinsetup(); + } + usb_proc(); + char *txt, *ans; + if((txt = get_USB())){ + IWDG->KR = IWDG_REFRESH; + ans = (char*)parse_cmd(txt); + if(ans){ + uint16_t l = 0; char *p = ans; + while(*p++) l++; + USB_send(ans); + } + } + } + return 0; +} diff --git a/F1-nolib/DS18/proto.c b/F1-nolib/DS18/proto.c new file mode 100644 index 0000000..d66614b --- /dev/null +++ b/F1-nolib/DS18/proto.c @@ -0,0 +1,146 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#include "ds18.h" +#include "proto.h" +#include "usb.h" + +extern volatile uint32_t Tms; + +static const char *helpmesg = + "'I' - get DS18 ID\n" + "'M' - start measurement\n" + "'P' - read scratchpad\n" + "'S' - get DHT state\n" + "'R' - software reset\n" + "'T' - get time from start\n" + "'W' - test watchdog\n" +; + +const char *parse_cmd(const char *buf){ + if(buf[1] != '\n') return buf; + switch(*buf){ + case 'I': + if(DS18_readID()) return "Reading ID..\n"; + else return "Error\n"; + case 'M': + if(DS18_start()) return "Started\n"; + else return "Wait a little\n"; + break; +/* case 'p': + DS18_poll(); + return "polling\n"; + break;*/ + case 'P': + if(DS18_readScratchpad()) return "Reading scr..\n"; + else return "Error\n"; + break; + case 'R': + USB_send("Soft reset\n"); + NVIC_SystemReset(); + break; + case 'S': + switch(DS18_getstate()){ + case DS18_SLEEP: + return "Sleeping\n"; + case DS18_RESETTING: + return "Resetting\n"; + case DS18_DETECTING: + return "Detecting\n"; + case DS18_DETDONE: + return "Detection done\n"; + case DS18_READING: + return "Measuring\n"; + case DS18_GOTANSWER: + return "Results are ready\n"; + default: + return "Not found\n"; + } + case 'T': + USB_send("T="); + USB_send(u2str(Tms)); + USB_send("ms\n"); + break; + case 'W': + USB_send("Wait for reboot\n"); + while(1){nop();}; + break; + default: // help + return helpmesg; + break; + } + return NULL; +} + +static char *_2str(uint32_t val, uint8_t minus){ + static char strbuf[12]; + char *bufptr = &strbuf[11]; + *bufptr = 0; + if(!val){ + *(--bufptr) = '0'; + }else{ + while(val){ + *(--bufptr) = val % 10 + '0'; + val /= 10; + } + } + if(minus) *(--bufptr) = '-'; + return bufptr; +} + +// return string with number `val` +char *u2str(uint32_t val){ + return _2str(val, 0); +} +char *i2str(int32_t i){ + uint8_t minus = 0; + uint32_t val; + if(i < 0){ + minus = 1; + val = -i; + }else val = i; + return _2str(val, minus); +} + +void printhex(uint8_t x){ + char b[3]; + uint8_t H(uint8_t c){ + if(c < 10) + return (c + '0'); + else + return (c + 'a' - 10); + } + b[0] = H(x >> 4); + b[1] = H(x & 0x0f); + b[2] = 0; + USB_send(b); +} + +void printT(int16_t T){ // print temperature value, this function should be called from ds18.c + USB_send("Temperature="); USB_send(i2str(T)); + USB_send("\n"); +} + +void printsp(uint8_t *b, int n){ + USB_send("Regvalue:"); + for(int i = 0; i < n; ++i){ + USB_send(" 0x"); + printhex(b[i]); + } + USB_send("\n"); +} diff --git a/F1-nolib/DS18/proto.h b/F1-nolib/DS18/proto.h new file mode 100644 index 0000000..110d2c0 --- /dev/null +++ b/F1-nolib/DS18/proto.h @@ -0,0 +1,31 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ +#pragma once +#ifndef PROTO_H__ +#define PROTO_H__ + +#include + +const char *parse_cmd(const char *buf); +char *u2str(uint32_t val); +char *i2str(int32_t i); +void printT(int16_t T); +void printsp(uint8_t *b, int n); +void printhex(uint8_t x); + +#endif // PROTO_H__ diff --git a/F1-nolib/DS18/usb.c b/F1-nolib/DS18/usb.c new file mode 100644 index 0000000..b6ecf00 --- /dev/null +++ b/F1-nolib/DS18/usb.c @@ -0,0 +1,162 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#include "usb.h" +#include "usb_lib.h" + +static volatile uint8_t tx_succesfull = 1; +static volatile uint8_t rxNE = 0; + +// interrupt IN handler (never used?) +static void EP1_Handler(){ + uint16_t epstatus = KEEP_DTOG(USB->EPnR[1]); + if(RX_FLAG(epstatus)) epstatus = (epstatus & ~USB_EPnR_STAT_TX) ^ USB_EPnR_STAT_RX; // set valid RX + else epstatus = epstatus & ~(USB_EPnR_STAT_TX|USB_EPnR_STAT_RX); + // clear CTR + epstatus = (epstatus & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX)); + USB->EPnR[1] = epstatus; +} + +// data IN/OUT handlers +static void transmit_Handler(){ // EP3IN + tx_succesfull = 1; + uint16_t epstatus = KEEP_DTOG_STAT(USB->EPnR[3]); + // clear CTR keep DTOGs & STATs + USB->EPnR[3] = (epstatus & ~(USB_EPnR_CTR_TX)); // clear TX ctr +} + +static void receive_Handler(){ // EP2OUT + rxNE = 1; + uint16_t epstatus = KEEP_DTOG_STAT(USB->EPnR[2]); + USB->EPnR[2] = (epstatus & ~(USB_EPnR_CTR_RX)); // clear RX ctr +} + +void USB_setup(){ + NVIC_DisableIRQ(USB_LP_CAN1_RX0_IRQn); + NVIC_DisableIRQ(USB_HP_CAN1_TX_IRQn); + RCC->APB1ENR |= RCC_APB1ENR_USBEN; + USB->CNTR = USB_CNTR_FRES; // Force USB Reset + for(uint32_t ctr = 0; ctr < 72000; ++ctr) nop(); // wait >1ms + //uint32_t ctr = 0; + USB->CNTR = 0; + USB->BTABLE = 0; + USB->DADDR = 0; + USB->ISTR = 0; + USB->CNTR = USB_CNTR_RESETM | USB_CNTR_WKUPM; // allow only wakeup & reset interrupts + NVIC_EnableIRQ(USB_LP_CAN1_RX0_IRQn); +} + +static int usbwr(const uint8_t *buf, uint16_t l){ + uint32_t ctra = 1000000; + while(--ctra && tx_succesfull == 0){ + IWDG->KR = IWDG_REFRESH; + } + tx_succesfull = 0; + EP_Write(3, buf, l); + ctra = 1000000; + while(--ctra && tx_succesfull == 0){ + IWDG->KR = IWDG_REFRESH; + } + if(tx_succesfull == 0){usbON = 0; return 1;} // usb is OFF? + return 0; +} + +static char usbbuff[USB_TXBUFSZ-1]; // temporary buffer (63 - to prevent need of ZLP) +static uint8_t buflen = 0; // amount of symbols in usbbuff + +// send next up to 63 bytes of data in usbbuff +static void send_next(){ + if(!buflen || !tx_succesfull) return; + tx_succesfull = 0; + EP_Write(3, (uint8_t*)usbbuff, buflen); + buflen = 0; +} + +// unblocking sending - just fill a buffer +void USB_send(const char *buf){ + if(!usbON) return; + uint16_t len = 0; + const char *b = buf; + while(*b++) ++len; + if(len > USB_TXBUFSZ-1 - buflen){ + usbwr((uint8_t*)usbbuff, buflen); + buflen = 0; + } + if(len > USB_TXBUFSZ-1){ + USB_send_blk(buf, len); + return; + } + while(len--) usbbuff[buflen++] = *buf++; +} + +// blocking sending +void USB_send_blk(const char *buf, uint16_t len){ + if(!usbON || !len) return; // USB disconnected + if(buflen){ + usbwr((uint8_t*)usbbuff, buflen); + buflen = 0; + } + int needzlp = 0; + while(len){ + if(len == USB_TXBUFSZ) needzlp = 1; + uint16_t s = (len > USB_TXBUFSZ) ? USB_TXBUFSZ : len; + if(usbwr((uint8_t*)buf, s)) return; + len -= s; + buf += s; + } + if(needzlp){ + usbwr(NULL, 0); + } +} + +void usb_proc(){ + switch(USB_Dev.USB_Status){ + case USB_STATE_CONFIGURED: + // make new BULK endpoint + // Buffer have 1024 bytes, but last 256 we use for CAN bus (30.2 of RM: USB main features) + EP_Init(1, EP_TYPE_INTERRUPT, USB_EP1BUFSZ, 0, EP1_Handler); // IN1 - transmit + EP_Init(2, EP_TYPE_BULK, 0, USB_RXBUFSZ, receive_Handler); // OUT2 - receive data + EP_Init(3, EP_TYPE_BULK, USB_TXBUFSZ, 0, transmit_Handler); // IN3 - transmit data + USB_Dev.USB_Status = USB_STATE_CONNECTED; + break; + case USB_STATE_DEFAULT: + case USB_STATE_ADDRESSED: + if(usbON){ + usbON = 0; + } + break; + default: // USB_STATE_CONNECTED - send next data portion + if(!usbON) return; + send_next(); + } +} + +/** + * @brief USB_receive + * @param buf (i) - buffer[64] for received data + * @return amount of received bytes + */ +uint8_t USB_receive(char *buf){ + if(!usbON || !rxNE) return 0; + uint8_t sz = EP_Read(2, (uint16_t*)buf); + uint16_t epstatus = KEEP_DTOG(USB->EPnR[2]); + // keep stat_tx & set ACK rx + USB->EPnR[2] = (epstatus & ~(USB_EPnR_STAT_TX)) ^ USB_EPnR_STAT_RX; + rxNE = 0; + return sz; +} diff --git a/F1-nolib/DS18/usb.h b/F1-nolib/DS18/usb.h new file mode 100644 index 0000000..14cffc4 --- /dev/null +++ b/F1-nolib/DS18/usb.h @@ -0,0 +1,33 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#pragma once +#ifndef __USB_H__ +#define __USB_H__ + +#include "hardware.h" + +#define BUFFSIZE (64) + +void USB_setup(); +void usb_proc(); +void USB_send(const char *buf); +void USB_send_blk(const char *buf, uint16_t len); +uint8_t USB_receive(char *buf); + +#endif // __USB_H__ diff --git a/F1-nolib/DS18/usb_defs.h b/F1-nolib/DS18/usb_defs.h new file mode 100644 index 0000000..c3ec6e5 --- /dev/null +++ b/F1-nolib/DS18/usb_defs.h @@ -0,0 +1,102 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#pragma once +#ifndef __USB_DEFS_H__ +#define __USB_DEFS_H__ + +#include + +// max endpoints number +#define STM32ENDPOINTS 8 +/** + * Buffers size definition + **/ +#define USB_BTABLE_SIZE 512 +// first 64 bytes of USB_BTABLE are registers! +//#define USB_EP0_BASEADDR 64 +// for USB FS EP0 buffers are from 8 to 64 bytes long (64 for PL2303) +#define USB_EP0_BUFSZ 64 +// USB transmit buffer size (64 for PL2303) +#define USB_TXBUFSZ 64 +// USB receive buffer size (64 for PL2303) +#define USB_RXBUFSZ 64 +// EP1 - interrupt - buffer size +#define USB_EP1BUFSZ 8 + +#define USB_BTABLE_BASE 0x40006000 +#define USB_BASE ((uint32_t)0x40005C00) +#define USB ((USB_TypeDef *) USB_BASE) + +#ifdef USB_BTABLE +#undef USB_BTABLE +#endif +#define USB_BTABLE ((USB_BtableDef *)(USB_BTABLE_BASE)) +#define USB_ISTR_EPID 0x0000000F +#define USB_FNR_LSOF_0 0x00000800 +#define USB_FNR_lSOF_1 0x00001000 +#define USB_LPMCSR_BESL_0 0x00000010 +#define USB_LPMCSR_BESL_1 0x00000020 +#define USB_LPMCSR_BESL_2 0x00000040 +#define USB_LPMCSR_BESL_3 0x00000080 +#define USB_EPnR_CTR_RX 0x00008000 +#define USB_EPnR_DTOG_RX 0x00004000 +#define USB_EPnR_STAT_RX 0x00003000 +#define USB_EPnR_STAT_RX_0 0x00001000 +#define USB_EPnR_STAT_RX_1 0x00002000 +#define USB_EPnR_SETUP 0x00000800 +#define USB_EPnR_EP_TYPE 0x00000600 +#define USB_EPnR_EP_TYPE_0 0x00000200 +#define USB_EPnR_EP_TYPE_1 0x00000400 +#define USB_EPnR_EP_KIND 0x00000100 +#define USB_EPnR_CTR_TX 0x00000080 +#define USB_EPnR_DTOG_TX 0x00000040 +#define USB_EPnR_STAT_TX 0x00000030 +#define USB_EPnR_STAT_TX_0 0x00000010 +#define USB_EPnR_STAT_TX_1 0x00000020 +#define USB_EPnR_EA 0x0000000F +#define USB_COUNTn_RX_BLSIZE 0x00008000 +#define USB_COUNTn_NUM_BLOCK 0x00007C00 +#define USB_COUNTn_RX 0x0000003F + +#ifdef USB_TypeDef +#define USB_TypeDef USB_TypeDef_custom +#endif + +typedef struct { + __IO uint32_t EPnR[STM32ENDPOINTS]; + __IO uint32_t RESERVED[STM32ENDPOINTS]; + __IO uint32_t CNTR; + __IO uint32_t ISTR; + __IO uint32_t FNR; + __IO uint32_t DADDR; + __IO uint32_t BTABLE; +} USB_TypeDef; + +typedef struct{ + __IO uint32_t USB_ADDR_TX; + __IO uint32_t USB_COUNT_TX; + __IO uint32_t USB_ADDR_RX; + __IO uint32_t USB_COUNT_RX; +} USB_EPDATA_TypeDef; + +typedef struct{ + __IO USB_EPDATA_TypeDef EP[STM32ENDPOINTS]; +} USB_BtableDef; + +#endif // __USB_DEFS_H__ diff --git a/F1-nolib/DS18/usb_lib.c b/F1-nolib/DS18/usb_lib.c new file mode 100644 index 0000000..09da695 --- /dev/null +++ b/F1-nolib/DS18/usb_lib.c @@ -0,0 +1,476 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#include +#include "usb_lib.h" + +ep_t endpoints[STM32ENDPOINTS]; + +usb_dev_t USB_Dev; +static usb_LineCoding lineCoding = {115200, 0, 0, 8}; +static config_pack_t setup_packet; +static uint8_t ep0databuf[EP0DATABUF_SIZE]; +static uint8_t ep0dbuflen = 0; + +usb_LineCoding getLineCoding(){return lineCoding;} + +uint8_t usbON = 0; // device disconnected from terminal + +// definition of parts common for USB_DeviceDescriptor & USB_DeviceQualifierDescriptor +#define bcdUSB_L 0x10 +#define bcdUSB_H 0x01 +#define bDeviceClass 0 +#define bDeviceSubClass 0 +#define bDeviceProtocol 0 +#define bNumConfigurations 1 + +static const uint8_t USB_DeviceDescriptor[] = { + 18, // bLength + 0x01, // bDescriptorType - Device descriptor + bcdUSB_L, // bcdUSB_L - 1.10 + bcdUSB_H, // bcdUSB_H + bDeviceClass, // bDeviceClass - USB_COMM + bDeviceSubClass, // bDeviceSubClass + bDeviceProtocol, // bDeviceProtocol + USB_EP0_BUFSZ, // bMaxPacketSize + 0x7b, // idVendor_L PL2303: VID=0x067b, PID=0x2303 + 0x06, // idVendor_H + 0x03, // idProduct_L + 0x23, // idProduct_H + 0x00, // bcdDevice_Ver_L + 0x03, // bcdDevice_Ver_H + 0x01, // iManufacturer + 0x02, // iProduct + 0x00, // iSerialNumber + bNumConfigurations // bNumConfigurations +}; + +static const uint8_t USB_DeviceQualifierDescriptor[] = { + 10, //bLength + 0x06, // bDescriptorType - Device qualifier + bcdUSB_L, // bcdUSB_L + bcdUSB_H, // bcdUSB_H + bDeviceClass, // bDeviceClass + bDeviceSubClass, // bDeviceSubClass + bDeviceProtocol, // bDeviceProtocol + USB_EP0_BUFSZ, // bMaxPacketSize0 + bNumConfigurations, // bNumConfigurations + 0x00 // Reserved +}; + +static const uint8_t USB_ConfigDescriptor[] = { + /*Configuration Descriptor*/ + 0x09, /* bLength: Configuration Descriptor size */ + 0x02, /* bDescriptorType: Configuration */ + 39, /* wTotalLength:no of returned bytes */ + 0x00, + 0x01, /* bNumInterfaces: 1 interface */ + 0x01, /* bConfigurationValue: Configuration value */ + 0x00, /* iConfiguration: Index of string descriptor describing the configuration */ + 0xa0, /* bmAttributes - Bus powered, Remote wakeup */ + 0x32, /* MaxPower 100 mA */ + + /*---------------------------------------------------------------------------*/ + + /*Interface Descriptor */ + 0x09, /* bLength: Interface Descriptor size */ + 0x04, /* bDescriptorType: Interface */ + 0x00, /* bInterfaceNumber: Number of Interface */ + 0x00, /* bAlternateSetting: Alternate setting */ + 0x03, /* bNumEndpoints: 3 endpoints used */ + 0xff, /* bInterfaceClass */ + 0x00, /* bInterfaceSubClass */ + 0x00, /* bInterfaceProtocol */ + 0x00, /* iInterface: */ +/////////////////////////////////////////////////// + /*Endpoint 1 Descriptor*/ + 0x07, /* bLength: Endpoint Descriptor size */ + 0x05, /* bDescriptorType: Endpoint */ + 0x81, /* bEndpointAddress IN1 */ + 0x03, /* bmAttributes: Interrupt */ + 0x0a, /* wMaxPacketSize LO: */ + 0x00, /* wMaxPacketSize HI: */ + 0x01, /* bInterval: */ + + /*Endpoint OUT2 Descriptor*/ + 0x07, /* bLength: Endpoint Descriptor size */ + 0x05, /* bDescriptorType: Endpoint */ + 0x02, /* bEndpointAddress: OUT2 */ + 0x02, /* bmAttributes: Bulk */ + (USB_RXBUFSZ & 0xff), /* wMaxPacketSize: 64 */ + (USB_RXBUFSZ >> 8), + 0x00, /* bInterval: ignore for Bulk transfer */ + + /*Endpoint IN3 Descriptor*/ + 0x07, /* bLength: Endpoint Descriptor size */ + 0x05, /* bDescriptorType: Endpoint */ + 0x83, /* bEndpointAddress IN3 */ + 0x02, /* bmAttributes: Bulk */ + (USB_TXBUFSZ & 0xff), /* wMaxPacketSize: 64 */ + (USB_TXBUFSZ >> 8), + 0x00, /* bInterval: ignore for Bulk transfer */ +}; + +_USB_LANG_ID_(USB_StringLangDescriptor, LANG_US); +// these descriptors are not used in PL2303 emulator! +_USB_STRING_(USB_StringSerialDescriptor, u"0"); +_USB_STRING_(USB_StringManufacturingDescriptor, u"Prolific Technology Inc."); +_USB_STRING_(USB_StringProdDescriptor, u"USB-Serial Controller"); + +/* + * default handlers + */ +// SET_LINE_CODING +void WEAK linecoding_handler(usb_LineCoding __attribute__((unused)) *lc){ +} + +// SET_CONTROL_LINE_STATE +void WEAK clstate_handler(uint16_t __attribute__((unused)) val){ +} + +// SEND_BREAK +void WEAK break_handler(){ +} + +// handler of vendor requests +void WEAK vendor_handler(config_pack_t *packet){ + if(packet->bmRequestType & 0x80){ // read + uint8_t c; + switch(packet->wValue){ + case 0x8484: + c = 2; + break; + case 0x0080: + c = 1; + break; + case 0x8686: + c = 0xaa; + break; + default: + c = 0; + } + EP_WriteIRQ(0, &c, 1); + }else{ // write ZLP + EP_WriteIRQ(0, (uint8_t *)0, 0); + } +} + +static void wr0(const uint8_t *buf, uint16_t size){ + if(setup_packet.wLength < size) size = setup_packet.wLength; // shortened request + if(size < endpoints[0].txbufsz){ + EP_WriteIRQ(0, buf, size); + return; + } + while(size){ + uint16_t l = size; + if(l > endpoints[0].txbufsz) l = endpoints[0].txbufsz; + EP_WriteIRQ(0, buf, l); + buf += l; + size -= l; + uint8_t needzlp = (l == endpoints[0].txbufsz) ? 1 : 0; + if(size || needzlp){ // send last data buffer + uint16_t status = KEEP_DTOG(USB->EPnR[0]); + // keep DTOGs, clear CTR_RX,TX, set TX VALID, leave stat_Rx + USB->EPnR[0] = (status & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX|USB_EPnR_STAT_RX)) + ^ USB_EPnR_STAT_TX; + uint32_t ctr = 1000000; + while(--ctr && (USB->ISTR & USB_ISTR_CTR) == 0){IWDG->KR = IWDG_REFRESH;}; + if((USB->ISTR & USB_ISTR_CTR) == 0){ + return; + } + if(needzlp) EP_WriteIRQ(0, (uint8_t*)0, 0); + } + } +} + +static inline void get_descriptor(){ + switch(setup_packet.wValue){ + case DEVICE_DESCRIPTOR: + wr0(USB_DeviceDescriptor, sizeof(USB_DeviceDescriptor)); + break; + case CONFIGURATION_DESCRIPTOR: + wr0(USB_ConfigDescriptor, sizeof(USB_ConfigDescriptor)); + break; + case STRING_LANG_DESCRIPTOR: + wr0((const uint8_t *)&USB_StringLangDescriptor, STRING_LANG_DESCRIPTOR_SIZE_BYTE); + break; + case STRING_MAN_DESCRIPTOR: + wr0((const uint8_t *)&USB_StringManufacturingDescriptor, USB_StringManufacturingDescriptor.bLength); + break; + case STRING_PROD_DESCRIPTOR: + wr0((const uint8_t *)&USB_StringProdDescriptor, USB_StringProdDescriptor.bLength); + break; + case STRING_SN_DESCRIPTOR: + wr0((const uint8_t *)&USB_StringSerialDescriptor, USB_StringSerialDescriptor.bLength); + break; + case DEVICE_QUALIFIER_DESCRIPTOR: + wr0(USB_DeviceQualifierDescriptor, USB_DeviceQualifierDescriptor[0]); + break; + default: + break; + } +} + +static uint8_t configuration = 0; // reply for GET_CONFIGURATION (==1 if configured) +static inline void std_d2h_req(){ + uint16_t status = 0; // bus powered + switch(setup_packet.bRequest){ + case GET_DESCRIPTOR: + get_descriptor(); + break; + case GET_STATUS: + EP_WriteIRQ(0, (uint8_t *)&status, 2); // send status: Bus Powered + break; + case GET_CONFIGURATION: + EP_WriteIRQ(0, &configuration, 1); + break; + default: + break; + } +} + +static inline void std_h2d_req(){ + switch(setup_packet.bRequest){ + case SET_ADDRESS: + // new address will be assigned later - after acknowlegement or request to host + USB_Dev.USB_Addr = setup_packet.wValue; + break; + case SET_CONFIGURATION: + // Now device configured + USB_Dev.USB_Status = USB_STATE_CONFIGURED; + configuration = setup_packet.wValue; + break; + default: + break; + } +} + +/* +bmRequestType: 76543210 +7 direction: 0 - host->device, 1 - device->host +65 type: 0 - standard, 1 - class, 2 - vendor +4..0 getter: 0 - device, 1 - interface, 2 - endpoint, 3 - other +*/ +/** + * Endpoint0 (control) handler + */ +static void EP0_Handler(){ + uint16_t epstatus = USB->EPnR[0]; // EP0R on input -> return this value after modifications + uint8_t reqtype = setup_packet.bmRequestType & 0x7f; + uint8_t dev2host = (setup_packet.bmRequestType & 0x80) ? 1 : 0; + int rxflag = RX_FLAG(epstatus); + if(rxflag && SETUP_FLAG(epstatus)){ + switch(reqtype){ + case STANDARD_DEVICE_REQUEST_TYPE: // standard device request + if(dev2host){ + std_d2h_req(); + }else{ + std_h2d_req(); + EP_WriteIRQ(0, (uint8_t *)0, 0); + } + break; + case STANDARD_ENDPOINT_REQUEST_TYPE: // standard endpoint request + if(setup_packet.bRequest == CLEAR_FEATURE){ + EP_WriteIRQ(0, (uint8_t *)0, 0); + } + break; + case VENDOR_REQUEST_TYPE: + vendor_handler(&setup_packet); + break; + case CONTROL_REQUEST_TYPE: + switch(setup_packet.bRequest){ + case GET_LINE_CODING: + EP_WriteIRQ(0, (uint8_t*)&lineCoding, sizeof(lineCoding)); + break; + case SET_LINE_CODING: // omit this for next stage, when data will come + break; + case SET_CONTROL_LINE_STATE: + usbON = 1; + clstate_handler(setup_packet.wValue); + break; + case SEND_BREAK: + usbON = 0; + break_handler(); + break; + default: + break; + } + if(setup_packet.bRequest != GET_LINE_CODING) EP_WriteIRQ(0, (uint8_t *)0, 0); // write acknowledgement + break; + default: + EP_WriteIRQ(0, (uint8_t *)0, 0); + } + }else if(rxflag){ // got data over EP0 or host acknowlegement + if(endpoints[0].rx_cnt){ + if(setup_packet.bRequest == SET_LINE_CODING){ + linecoding_handler((usb_LineCoding*)ep0databuf); + } + } + } else if(TX_FLAG(epstatus)){ // package transmitted + // now we can change address after enumeration + if ((USB->DADDR & USB_DADDR_ADD) != USB_Dev.USB_Addr){ + USB->DADDR = USB_DADDR_EF | USB_Dev.USB_Addr; + // change state to ADRESSED + USB_Dev.USB_Status = USB_STATE_ADDRESSED; + } + } + epstatus = KEEP_DTOG(USB->EPnR[0]); + if(rxflag) epstatus ^= USB_EPnR_STAT_TX; // start ZLP/data transmission + else epstatus &= ~USB_EPnR_STAT_TX; // or leave unchanged + // keep DTOGs, clear CTR_RX,TX, set RX VALID + USB->EPnR[0] = (epstatus & ~(USB_EPnR_CTR_RX|USB_EPnR_CTR_TX)) ^ USB_EPnR_STAT_RX; +} + +static uint16_t lastaddr = LASTADDR_DEFAULT; +/** + * Endpoint initialisation + * @param number - EP num (0...7) + * @param type - EP type (EP_TYPE_BULK, EP_TYPE_CONTROL, EP_TYPE_ISO, EP_TYPE_INTERRUPT) + * @param txsz - transmission buffer size @ USB/CAN buffer + * @param rxsz - reception buffer size @ USB/CAN buffer + * @param uint16_t (*func)(ep_t *ep) - EP handler function + * @return 0 if all OK + */ +int EP_Init(uint8_t number, uint8_t type, uint16_t txsz, uint16_t rxsz, void (*func)(ep_t ep)){ + if(number >= STM32ENDPOINTS) return 4; // out of configured amount + if(txsz > USB_BTABLE_SIZE || rxsz > USB_BTABLE_SIZE) return 1; // buffer too large + if(lastaddr + txsz + rxsz >= USB_BTABLE_SIZE) return 2; // out of btable + USB->EPnR[number] = (type << 9) | (number & USB_EPnR_EA); + USB->EPnR[number] ^= USB_EPnR_STAT_RX | USB_EPnR_STAT_TX_1; + if(rxsz & 1 || rxsz > 512) return 3; // wrong rx buffer size + uint16_t countrx = 0; + if(rxsz < 64) countrx = rxsz / 2; + else{ + if(rxsz & 0x1f) return 3; // should be multiple of 32 + countrx = 31 + rxsz / 32; + } + USB_BTABLE->EP[number].USB_ADDR_TX = lastaddr; + endpoints[number].tx_buf = (uint16_t *)(USB_BTABLE_BASE + lastaddr*2); + endpoints[number].txbufsz = txsz; + lastaddr += txsz; + USB_BTABLE->EP[number].USB_COUNT_TX = 0; + USB_BTABLE->EP[number].USB_ADDR_RX = lastaddr; + endpoints[number].rx_buf = (uint16_t *)(USB_BTABLE_BASE + lastaddr*2); + lastaddr += rxsz; + USB_BTABLE->EP[number].USB_COUNT_RX = countrx << 10; + endpoints[number].func = func; + return 0; +} + +// standard IRQ handler +void usb_lp_can_rx0_isr(){ + if(USB->ISTR & USB_ISTR_RESET){ + usbON = 0; + // Reinit registers + USB->CNTR = USB_CNTR_RESETM | USB_CNTR_CTRM | USB_CNTR_SUSPM | USB_CNTR_WKUPM; + USB->ISTR = 0; + // Endpoint 0 - CONTROL + // ON USB LS size of EP0 may be 8 bytes, but on FS it should be 64 bytes! + lastaddr = LASTADDR_DEFAULT; + // clear address, leave only enable bit + USB->DADDR = USB_DADDR_EF; + USB_Dev.USB_Status = USB_STATE_DEFAULT; + USB->ISTR = ~USB_ISTR_RESET; + if(EP_Init(0, EP_TYPE_CONTROL, USB_EP0_BUFSZ, USB_EP0_BUFSZ, EP0_Handler)){ + return; + } + } + if(USB->ISTR & USB_ISTR_CTR){ + // EP number + uint8_t n = USB->ISTR & USB_ISTR_EPID; + // copy status register + uint16_t epstatus = USB->EPnR[n]; + // copy received bytes amount + endpoints[n].rx_cnt = USB_BTABLE->EP[n].USB_COUNT_RX & 0x3FF; // low 10 bits is counter + // check direction + if(USB->ISTR & USB_ISTR_DIR){ // OUT interrupt - receive data, CTR_RX==1 (if CTR_TX == 1 - two pending transactions: receive following by transmit) + if(n == 0){ // control endpoint + if(epstatus & USB_EPnR_SETUP){ // setup packet -> copy data to conf_pack + EP_Read(0, (uint16_t*)&setup_packet); + ep0dbuflen = 0; + // interrupt handler will be called later + }else if(epstatus & USB_EPnR_CTR_RX){ // data packet -> push received data to ep0databuf + ep0dbuflen = endpoints[0].rx_cnt; + EP_Read(0, (uint16_t*)&ep0databuf); + } + } + } + // call EP handler + if(endpoints[n].func) endpoints[n].func(endpoints[n]); + } + if(USB->ISTR & USB_ISTR_SUSP){ // suspend -> still no connection, may sleep + usbON = 0; + USB->CNTR |= USB_CNTR_FSUSP | USB_CNTR_LP_MODE; + USB->ISTR = ~USB_ISTR_SUSP; + } + if(USB->ISTR & USB_ISTR_WKUP){ // wakeup + USB->CNTR &= ~(USB_CNTR_FSUSP | USB_CNTR_LP_MODE); // clear suspend flags + USB->ISTR = ~USB_ISTR_WKUP; + } +} + +/** + * Write data to EP buffer (called from IRQ handler) + * @param number - EP number + * @param *buf - array with data + * @param size - its size + */ +void EP_WriteIRQ(uint8_t number, const uint8_t *buf, uint16_t size){ + uint8_t i; + if(size > endpoints[number].txbufsz) size = endpoints[number].txbufsz; + uint16_t N2 = (size + 1) >> 1; + // the buffer is 16-bit, so we should copy data as it would be uint16_t + uint16_t *buf16 = (uint16_t *)buf; + uint32_t *out = (uint32_t *)endpoints[number].tx_buf; + for(i = 0; i < N2; ++i, ++out){ + *out = buf16[i]; + } + USB_BTABLE->EP[number].USB_COUNT_TX = size; +} + +/** + * Write data to EP buffer (called outside IRQ handler) + * @param number - EP number + * @param *buf - array with data + * @param size - its size + */ +void EP_Write(uint8_t number, const uint8_t *buf, uint16_t size){ + EP_WriteIRQ(number, buf, size); + uint16_t status = KEEP_DTOG(USB->EPnR[number]); + // keep DTOGs, clear CTR_TX & set TX VALID to start transmission + USB->EPnR[number] = (status & ~(USB_EPnR_CTR_TX)) ^ USB_EPnR_STAT_TX; +} + +/* + * Copy data from EP buffer into user buffer area + * @param *buf - user array for data + * @return amount of data read + */ +int EP_Read(uint8_t number, uint16_t *buf){ + int sz = endpoints[number].rx_cnt; + if(!sz) return 0; + endpoints[number].rx_cnt = 0; + int n = (sz + 1) >> 1; + uint32_t *in = (uint32_t *)endpoints[number].rx_buf; + if(n){ + for(int i = 0; i < n; ++i, ++in) + buf[i] = *(uint16_t*)in; + } + return sz; +} + diff --git a/F1-nolib/DS18/usb_lib.h b/F1-nolib/DS18/usb_lib.h new file mode 100644 index 0000000..ec2a046 --- /dev/null +++ b/F1-nolib/DS18/usb_lib.h @@ -0,0 +1,184 @@ +/* + * This file is part of the DS18 project. + * Copyright 2021 Edward V. Emelianov . + * + * 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 3 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, see . + */ + +#pragma once +#ifndef __USB_LIB_H__ +#define __USB_LIB_H__ + +#include +#include "usb_defs.h" + +#define EP0DATABUF_SIZE (64) +#define LASTADDR_DEFAULT (STM32ENDPOINTS * 8) + +// bmRequestType & 0x7f +#define STANDARD_DEVICE_REQUEST_TYPE 0 +#define STANDARD_ENDPOINT_REQUEST_TYPE 2 +#define VENDOR_REQUEST_TYPE 0x40 +#define CONTROL_REQUEST_TYPE 0x21 +// bRequest, standard; for bmRequestType == 0x80 +#define GET_STATUS 0x00 +#define GET_DESCRIPTOR 0x06 +#define GET_CONFIGURATION 0x08 +// for bmRequestType == 0 +#define CLEAR_FEATURE 0x01 +#define SET_FEATURE 0x03 // unused +#define SET_ADDRESS 0x05 +#define SET_DESCRIPTOR 0x07 // unused +#define SET_CONFIGURATION 0x09 +// for bmRequestType == 0x81, 1 or 0xB2 +#define GET_INTERFACE 0x0A // unused +#define SET_INTERFACE 0x0B // unused +#define SYNC_FRAME 0x0C // unused +#define VENDOR_REQUEST 0x01 // unused + +// Class-Specific Control Requests +#define SEND_ENCAPSULATED_COMMAND 0x00 // unused +#define GET_ENCAPSULATED_RESPONSE 0x01 // unused +#define SET_COMM_FEATURE 0x02 // unused +#define GET_COMM_FEATURE 0x03 // unused +#define CLEAR_COMM_FEATURE 0x04 // unused +#define SET_LINE_CODING 0x20 +#define GET_LINE_CODING 0x21 +#define SET_CONTROL_LINE_STATE 0x22 +#define SEND_BREAK 0x23 + +// control line states +#define CONTROL_DTR 0x01 +#define CONTROL_RTS 0x02 + +// wValue +#define DEVICE_DESCRIPTOR 0x100 +#define CONFIGURATION_DESCRIPTOR 0x200 +#define STRING_LANG_DESCRIPTOR 0x300 +#define STRING_MAN_DESCRIPTOR 0x301 +#define STRING_PROD_DESCRIPTOR 0x302 +#define STRING_SN_DESCRIPTOR 0x303 +#define DEVICE_QUALIFIER_DESCRIPTOR 0x600 + +#define RX_FLAG(epstat) (epstat & USB_EPnR_CTR_RX) +#define TX_FLAG(epstat) (epstat & USB_EPnR_CTR_TX) +#define SETUP_FLAG(epstat) (epstat & USB_EPnR_SETUP) + +// EPnR bits manipulation +#define KEEP_DTOG_STAT(EPnR) (EPnR & ~(USB_EPnR_STAT_RX|USB_EPnR_STAT_TX|USB_EPnR_DTOG_RX|USB_EPnR_DTOG_TX)) +#define KEEP_DTOG(EPnR) (EPnR & ~(USB_EPnR_DTOG_RX|USB_EPnR_DTOG_TX)) + +// USB state: uninitialized, addressed, ready for use +typedef enum{ + USB_STATE_DEFAULT, + USB_STATE_ADDRESSED, + USB_STATE_CONFIGURED, + USB_STATE_CONNECTED +} USB_state; + +// EP types +#define EP_TYPE_BULK 0x00 +#define EP_TYPE_CONTROL 0x01 +#define EP_TYPE_ISO 0x02 +#define EP_TYPE_INTERRUPT 0x03 + +#define LANG_US (uint16_t)0x0409 + +#define _USB_STRING_(name, str) \ +static const struct name \ +{ \ + uint8_t bLength; \ + uint8_t bDescriptorType; \ + uint16_t bString[(sizeof(str) - 2) / 2]; \ + \ +} \ +name = {sizeof(name), 0x03, str} + +#define _USB_LANG_ID_(name, lng_id) \ + \ +static const struct name \ +{ \ + uint8_t bLength; \ + uint8_t bDescriptorType; \ + uint16_t bString; \ + \ +} \ +name = {0x04, 0x03, lng_id} +#define STRING_LANG_DESCRIPTOR_SIZE_BYTE (4) + +// EP0 configuration packet +typedef struct { + uint8_t bmRequestType; + uint8_t bRequest; + uint16_t wValue; + uint16_t wIndex; + uint16_t wLength; +} config_pack_t; + +// endpoints state +typedef struct{ + uint16_t *tx_buf; // transmission buffer address + uint16_t txbufsz; // transmission buffer size + uint16_t *rx_buf; // reception buffer address + void (*func)(); // endpoint action function + unsigned rx_cnt : 10; // received data counter +} ep_t; + +// USB status & its address +typedef struct { + uint8_t USB_Status; + uint16_t USB_Addr; +}usb_dev_t; + +typedef struct { + uint32_t dwDTERate; + uint8_t bCharFormat; + #define USB_CDC_1_STOP_BITS 0 + #define USB_CDC_1_5_STOP_BITS 1 + #define USB_CDC_2_STOP_BITS 2 + uint8_t bParityType; + #define USB_CDC_NO_PARITY 0 + #define USB_CDC_ODD_PARITY 1 + #define USB_CDC_EVEN_PARITY 2 + #define USB_CDC_MARK_PARITY 3 + #define USB_CDC_SPACE_PARITY 4 + uint8_t bDataBits; +} __attribute__ ((packed)) usb_LineCoding; + +typedef struct { + uint8_t bmRequestType; + uint8_t bNotificationType; + uint16_t wValue; + uint16_t wIndex; + uint16_t wLength; +} __attribute__ ((packed)) usb_cdc_notification; + +extern ep_t endpoints[]; +extern usb_dev_t USB_Dev; +extern uint8_t usbON; + +void USB_Init(); +void USB_ResetState(); +int EP_Init(uint8_t number, uint8_t type, uint16_t txsz, uint16_t rxsz, void (*func)()); +void EP_WriteIRQ(uint8_t number, const uint8_t *buf, uint16_t size); +void EP_Write(uint8_t number, const uint8_t *buf, uint16_t size); +int EP_Read(uint8_t number, uint16_t *buf); +usb_LineCoding getLineCoding(); + +void linecoding_handler(usb_LineCoding *lc); +void clstate_handler(uint16_t val); +void break_handler(); +void vendor_handler(config_pack_t *packet); + +#endif // __USB_LIB_H__