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Working code for STM32F0x2 test board, development of the same code for STM32F103

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This commit is contained in:
eddyem
2019-05-18 18:57:57 +03:00
parent 24b953e3a3
commit 96c7e0d77c
52 changed files with 11016 additions and 4227 deletions
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139
F1-nolib/F1_testbrd/Makefile Normal file
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BINARY = pl2303
BOOTPORT ?= /dev/ttyUSB0
BOOTSPEED ?= 115200
# MCU FAMILY
FAMILY ?= F1
# MCU code
MCU ?= F103xB
# density (stm32f10x.h, lines 70-84)
DENSITY ?= MD
# change this linking script depending on particular MCU model,
LDSCRIPT ?= stm32f103xB.ld
# debug
DEFS = -DEBUG
INDEPENDENT_HEADERS=
FP_FLAGS ?= -msoft-float
ASM_FLAGS ?= -mthumb -mcpu=cortex-m3
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)
SRC = adc.c hardware.c main.c usart.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 := $(INC_DIR)/ld
###############################################################################
# C flags
CFLAGS += -O2 -g -D__thumb2__=1 -MD
CFLAGS += -Wall -Werror -Wextra -Wshadow
CFLAGS += -fno-common -ffunction-sections -fdata-sections
###############################################################################
# Linker flags
LDFLAGS += -nostartfiles --static
LDFLAGS += -L$(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) $(ARCH_FLAGS) -o $@ -c $<
$(OBJDIR)/%.o: %.c
@echo " CC $<"
$(CC) $(CFLAGS) $(DEFS) $(INCLUDE) $(ARCH_FLAGS) -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

1
F1-nolib/F1_testbrd/Readme.md Normal file
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Simple test for STM32F103, blinking PA0/PA1, two user buttons (PA14 and PA15) and USB (PL2303 emulator) <> USART1 echo.

72
F1-nolib/F1_testbrd/adc.c Normal file
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/*
* This file is part of the Chiller project.
* Copyright 2018 Edward V. Emelianov <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 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 <http://www.gnu.org/licenses/>.
*/
#include "adc.h"
/**
* @brief ADC_array - array for ADC channels with median filtering:
* 0 - Rvar
* 1 - internal Tsens
* 2 - Vref
*/
uint16_t ADC_array[NUMBER_OF_ADC_CHANNELS*9];
/**
* @brief getADCval - calculate median value for `nch` channel
* @param nch - number of channel
* @return
*/
uint16_t getADCval(int nch){
int i, addr = nch;
register uint16_t temp;
#define PIX_SORT(a,b) { if ((a)>(b)) PIX_SWAP((a),(b)); }
#define PIX_SWAP(a,b) { temp=(a);(a)=(b);(b)=temp; }
uint16_t p[9];
for(i = 0; i < 9; ++i, addr += NUMBER_OF_ADC_CHANNELS) // first we should prepare array for optmed
p[i] = ADC_array[addr];
PIX_SORT(p[1], p[2]) ; PIX_SORT(p[4], p[5]) ; PIX_SORT(p[7], p[8]) ;
PIX_SORT(p[0], p[1]) ; PIX_SORT(p[3], p[4]) ; PIX_SORT(p[6], p[7]) ;
PIX_SORT(p[1], p[2]) ; PIX_SORT(p[4], p[5]) ; PIX_SORT(p[7], p[8]) ;
PIX_SORT(p[0], p[3]) ; PIX_SORT(p[5], p[8]) ; PIX_SORT(p[4], p[7]) ;
PIX_SORT(p[3], p[6]) ; PIX_SORT(p[1], p[4]) ; PIX_SORT(p[2], p[5]) ;
PIX_SORT(p[4], p[7]) ; PIX_SORT(p[4], p[2]) ; PIX_SORT(p[6], p[4]) ;
PIX_SORT(p[4], p[2]) ;
return p[4];
#undef PIX_SORT
#undef PIX_SWAP
}
// return MCU temperature (degrees of celsius * 10)
int32_t getMCUtemp(){
// Temp = (V25 - Vsense)/Avg_Slope + 25
// V_25 = 1.45V, Slope = 4.3e-3
int32_t Vsense = getVdd() * getADCval(1);
Vsense /= 4096;
int32_t temperature = 145 - Vsense;
temperature *= 233;
temperature /= 10; // convert from *100 to *10
temperature += 250;
return(temperature);
}
// return Vdd * 100 (V)
uint32_t getVdd(){
uint32_t vdd = ((uint32_t) *VREFINT_CAL_ADDR) * (uint32_t)300; // 3.0V
vdd /= getADCval(2);
return vdd;
}

29
F1-nolib/F1_testbrd/adc.h Normal file
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/*
* This file is part of the Chiller project.
* Copyright 2018 Edward V. Emelianov <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 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 <http://www.gnu.org/licenses/>.
*/
#ifndef ADC_H
#define ADC_H
#include "stm32f1.h"
#define NUMBER_OF_ADC_CHANNELS (3)
extern uint16_t ADC_array[];
int32_t getMCUtemp();
uint32_t getVdd();
uint16_t getADCval(int nch);
#endif // ADC_H

76
F1-nolib/F1_testbrd/hardware.c Normal file
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/*
* geany_encoding=koi8-r
* hardware.c - hardware-dependent macros & functions
*
* Copyright 2018 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.
*
*/
#include "adc.h"
#include "hardware.h"
#include "usart.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_IOPBEN | RCC_APB2ENR_AFIOEN;
// turn off SWJ/JTAG
AFIO->MAPR = AFIO_MAPR_SWJ_CFG_DISABLE;
// turn off USB pullup
GPIOA->ODR = (1<<13)|(1<<14)|(1<<15); // turn off usb pullup & turn on pullups for buttons
// Set leds (PA0/PA4) as opendrain output
GPIOA->CRL = CRL(0, CNF_ODOUTPUT|MODE_SLOW) | CRL(4, CNF_ODOUTPUT|MODE_SLOW);
// Set buttons (PA14/15) as inputs with weak pullups, USB pullup (PA13) - opendrain output
GPIOA->CRH = CRH(13, CNF_ODOUTPUT|MODE_SLOW) | CRH(14, CNF_PUDINPUT|MODE_INPUT)
| CRH(15, CNF_PUDINPUT|MODE_INPUT);
}
static inline void adc_setup(){
GPIOB->CRL |= CRL(0, CNF_ANALOG|MODE_INPUT);
uint16_t ctr = 0; // 0xfff0 - more than 1.3ms
// Enable clocking
RCC->APB2ENR |= RCC_APB2ENR_ADC1EN;
RCC->CFGR &= ~(RCC_CFGR_ADCPRE);
RCC->CFGR |= RCC_CFGR_ADCPRE_1;
// sampling time - 239.5 cycles for channels 8, 16 and 17
ADC1->SMPR2 = ADC_SMPR2_SMP8;
ADC1->SMPR1 = ADC_SMPR1_SMP16 | ADC_SMPR1_SMP17;
// wake up ADC
ADC1->CR2 |= ADC_CR2_ADON;
// we have three conversions in group -> ADC1->SQR1[L] = 2, order: 8->16->17
ADC1->SQR3 = 8 | (16<<5)| (17<<10);
ADC1->SQR1 = ADC_SQR1_L_1;
// calibration
ADC1->CR2 |= ADC_CR2_CAL;
while((ADC1->CR2 & ADC_CR2_CAL) && ++ctr < 0xfff0);
// DMA configuration
RCC->AHBENR |= RCC_AHBENR_DMA1EN;
DMA1_Channel1->CPAR = (uint32_t) (&(ADC1->DR));
DMA1_Channel1->CMAR = (uint32_t)(ADC_array);
DMA1_Channel1->CNDTR = NUMBER_OF_ADC_CHANNELS * 9;
DMA1_Channel1->CCR |= DMA_CCR_MINC | DMA_CCR_MSIZE_0 | DMA_CCR_PSIZE_0 | DMA_CCR_CIRC;
DMA1_Channel1->CCR |= DMA_CCR_EN;
// continuous mode & DMA; enable vref & Tsens; start
ADC1->CR2 |= ADC_CR2_CONT | ADC_CR2_DMA | ADC_CR2_TSVREFE | ADC_CR2_SWSTART;
// turn ON ADC
ADC1->CR2 |= ADC_CR2_ADON;
}
void hw_setup(){
gpio_setup();
adc_setup();
}

51
F1-nolib/F1_testbrd/hardware.h Normal file
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/*
* geany_encoding=koi8-r
* hardware.h
*
* Copyright 2018 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 __HARDWARE_H__
#define __HARDWARE_H__
#include "stm32f1.h"
// LEDS: 0 - PA0, 1 - PA4
// LED0 - blinking each second
#define LED0_port GPIOA
#define LED0_pin (1<<0)
// LED1 - PWM
#define LED1_port GPIOA
#define LED1_pin (1<<4)
// Buttons' state: PA14 (1)/PA15 (0)
#define GET_BTN0() ((GPIOA->IDR & (1<<15)) ? 0 : 1)
#define GET_BTN1() ((GPIOA->IDR & (1<<14)) ? 0 : 1)
// USB pullup (not used in STM32F0x2!) - PA13
#define USBPU_port GPIOA
#define USBPU_pin (1<<13)
#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();
#endif // __HARDWARE_H__

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/*
* main.c
*
* Copyright 2017 Edward V. Emelianoff <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.
*/
#include "adc.h"
#include "hardware.h"
#include "usart.h"
#include "usb.h"
#include "usb_lib.h"
#include <string.h> // memcpy
volatile uint32_t Tms = 0;
#define USB_send(x) do{}while(0)
/* Called when systick fires */
void sys_tick_handler(void){
++Tms;
}
void iwdg_setup(){
uint32_t tmout = 16000000;
/* Enable the peripheral clock RTC */
/* (1) Enable the LSI (40kHz) */
/* (2) Wait while it is not ready */
RCC->CSR |= RCC_CSR_LSION; /* (1) */
while((RCC->CSR & RCC_CSR_LSIRDY) != RCC_CSR_LSIRDY){if(--tmout == 0) break;} /* (2) */
/* Configure IWDG */
/* (1) Activate IWDG (not needed if done in option bytes) */
/* (2) Enable write access to IWDG registers */
/* (3) Set prescaler by 64 (1.6ms for each tick) */
/* (4) Set reload value to have a rollover each 2s */
/* (5) Check if flags are reset */
/* (6) Refresh counter */
IWDG->KR = IWDG_START; /* (1) */
IWDG->KR = IWDG_WRITE_ACCESS; /* (2) */
IWDG->PR = IWDG_PR_PR_1; /* (3) */
IWDG->RLR = 1250; /* (4) */
tmout = 16000000;
while(IWDG->SR){if(--tmout == 0) break;} /* (5) */
IWDG->KR = IWDG_REFRESH; /* (6) */
}
char *parse_cmd(char *buf){
static char btns[] = "BTN0=0, BTN1=0\n";
if(buf[1] != '\n') return buf;
switch(*buf){
case '0':
pin_set(GPIOA, 1<<4);
break;
case '1':
pin_clear(GPIOA, 1<<4);
break;
case 'a':
printu(getADCval(0)); newline();
printu(getADCval(1)); newline();
printu(getADCval(2)); newline();
break;
case 'b':
btns[5] = GET_BTN0() + '0';
btns[13] = GET_BTN1() + '0';
return btns;
break;
case 'c':
printu((uint32_t) *VREFINT_CAL_ADDR);
newline();
break;
case 'p':
pin_toggle(USBPU_port, USBPU_pin);
SEND("USB pullup is ");
if(pin_read(USBPU_port, USBPU_pin)) SEND("off");
else SEND("on");
newline();
break;
case 'A':
return u2str(getADCval(0));
break;
case 'L':
USB_send("Very long test string for USB (it's length is more than 64 bytes).\n"
"This is another part of the string! Can you see all of this?\n");
return "Long test sent\n";
break;
case 'R':
USB_send("Soft reset\n");
SEND("Soft reset\n");
NVIC_SystemReset();
break;
case 'S':
USB_send("Test string for USB\n");
return "Short test sent\n";
break;
case 'T':
return u2str(getMCUtemp());
break;
case 'V':
return u2str(getVdd());
break;
case 'W':
USB_send("Wait for reboot\n");
SEND("Wait for reboot\n");
while(1){nop();};
break;
default: // help
return
"0/1 - turn on/off LED1"
"'b' - get buttons's state\n"
"'p' - toggle USB pullup\n"
"'A' - get ADC8 value\n"
"'L' - send long string over USB\n"
"'R' - software reset\n"
"'S' - send short string over USB\n"
"'T' - MCU temperature\n"
"'V' - Vdd\n"
"'W' - test watchdog\n"
;
break;
}
return NULL;
}
/*
// usb getline
char *get_USB(){
static char tmpbuf[129], *curptr = tmpbuf;
static int rest = 128;
int x = USB_receive(curptr, rest);
curptr[x] = 0;
if(!x) return NULL;
SEND("got: ");
SEND(curptr);
newline();
if(curptr[x-1] == '\n'){
curptr = tmpbuf;
rest = 128;
return tmpbuf;
}
curptr += x; rest -= x;
if(rest <= 0){ // buffer overflow
curptr = tmpbuf;
rest = 128;
}
return NULL;
}*/
int main(void){
uint32_t lastT = 0, lastB = 0, LEDperiod = 499;
sysreset();
StartHSE();
hw_setup();
usart_setup();
SysTick_Config(72000);
SEND("Hello! I'm ready.\n");
if(RCC->CSR & RCC_CSR_IWDGRSTF){ // watchdog reset occured
SEND("WDGRESET=1\n");
}
if(RCC->CSR & RCC_CSR_SFTRSTF){ // software reset occured
SEND("SOFTRESET=1\n");
}
RCC->CSR |= RCC_CSR_RMVF; // remove reset flags
//USB_setup();
iwdg_setup();
while (1){
IWDG->KR = IWDG_REFRESH; // refresh watchdog
if(lastT > Tms || Tms - lastT > LEDperiod){
LED_blink(LED0);
lastT = Tms;
transmit_tbuf(); // non-blocking transmission of data from UART buffer every 0.5s
}
//usb_proc();
int r = 0;
char *txt, *ans;
/*if((txt = get_USB())){
ans = parse_cmd(txt);
SEND("Received data over USB:\n");
SEND(txt);
newline();
if(ans) USB_send(ans);
}*/
if(usartrx()){ // usart1 received data, store in in buffer
r = usart_getline(&txt);
if(r){
txt[r] = 0;
ans = parse_cmd(txt);
if(ans){
usart_send(ans);
transmit_tbuf();
}
}
}
// check buttons - each 50ms (increase / decrease LED blinking period by 10)
if(Tms - lastB > 49){
lastB = Tms;
uint8_t btn0 = GET_BTN0(), btn1 = GET_BTN1();
// both: set to default
if(btn0 && btn1){
LEDperiod = 499;
}else if(btn0){
if(LEDperiod < 1989) LEDperiod += 10;
}else if(btn1){
if(LEDperiod > 29) LEDperiod -= 10;
}
}
}
return 0;
}

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F1-nolib/F1_testbrd/pl2303.bin Executable file
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/*
* usart.c
*
* Copyright 2018 Edward V. Emelianoff <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.
*/
#include "stm32f1.h"
#include "usart.h"
extern volatile uint32_t Tms;
static volatile int idatalen[2] = {0,0}; // received data line length (including '\n')
static volatile int odatalen[2] = {0,0};
volatile int linerdy = 0, // received data ready
dlen = 0, // length of data (including '\n') in current buffer
bufovr = 0, // input buffer overfull
txrdy = 1 // transmission done
;
int rbufno = 0, tbufno = 0; // current rbuf/tbuf numbers
static char rbuf[2][UARTBUFSZI], tbuf[2][UARTBUFSZO]; // receive & transmit buffers
static char *recvdata = NULL;
/**
* return length of received data (without trailing zero)
*/
int usart_getline(char **line){
if(bufovr){
bufovr = 0;
linerdy = 0;
return 0;
}
*line = recvdata;
linerdy = 0;
return dlen;
}
// transmit current tbuf and swap buffers
void transmit_tbuf(){
uint32_t tmout = 16000000;
while(!txrdy){if(--tmout == 0) return;}; // wait for previos buffer transmission
register int l = odatalen[tbufno];
if(!l) return;
txrdy = 0;
odatalen[tbufno] = 0;
DMA1_Channel4->CCR &= ~DMA_CCR_EN;
DMA1_Channel4->CMAR = (uint32_t) tbuf[tbufno]; // mem
DMA1_Channel4->CNDTR = l;
DMA1_Channel4->CCR |= DMA_CCR_EN;
tbufno = !tbufno;
}
void usart_putchar(const char ch){
if(odatalen[tbufno] == UARTBUFSZO) transmit_tbuf();
tbuf[tbufno][odatalen[tbufno]++] = ch;
}
void usart_send(const char *str){
uint32_t x = 512;
while(*str && --x){
if(odatalen[tbufno] == UARTBUFSZO) transmit_tbuf();
tbuf[tbufno][odatalen[tbufno]++] = *str++;
}
}
void newline(){
usart_putchar('\n');
transmit_tbuf();
}
/*
* USART speed: baudrate = Fck/(USARTDIV)
* USARTDIV stored in USART->BRR
*
* for 72MHz USARTDIV=72000/f(kboud); so for 115200 USARTDIV=72000/115.2=625 -> BRR=0x271
* 9600: BRR = 7500 (0x1D4C)
*/
void usart_setup(){
uint32_t tmout = 16000000;
// PA9 - Tx, PA10 - Rx
RCC->APB2ENR |= RCC_APB2ENR_IOPAEN | RCC_APB2ENR_USART1EN;
RCC->AHBENR |= RCC_AHBENR_DMA1EN;
GPIOA->CRH |= CRH(9, CNF_AFPP|MODE_NORMAL) | CRH(10, CNF_FLINPUT|MODE_INPUT);
// USART1 Tx DMA - Channel4 (Rx - channel 5)
DMA1_Channel4->CPAR = (uint32_t) &USART1->DR; // periph
DMA1_Channel4->CCR |= DMA_CCR_MINC | DMA_CCR_DIR | DMA_CCR_TCIE; // 8bit, mem++, mem->per, transcompl irq
// Tx CNDTR set @ each transmission due to data size
NVIC_SetPriority(DMA1_Channel4_IRQn, 3);
NVIC_EnableIRQ(DMA1_Channel4_IRQn);
NVIC_SetPriority(USART1_IRQn, 0);
// setup usart1
USART1->BRR = 72000000 / 115200;
USART1->CR1 = USART_CR1_TE | USART_CR1_RE | USART_CR1_UE; // 1start,8data,nstop; enable Rx,Tx,USART
while(!(USART1->SR & USART_SR_TC)){if(--tmout == 0) break;} // polling idle frame Transmission
USART1->SR = 0; // clear flags
USART1->CR1 |= USART_CR1_RXNEIE; // allow Rx IRQ
USART1->CR3 = USART_CR3_DMAT; // enable DMA Tx
NVIC_EnableIRQ(USART1_IRQn);
}
void usart1_isr(){
#ifdef CHECK_TMOUT
static uint32_t tmout = 0;
#endif
if(USART1->SR & USART_SR_RXNE){ // RX not emty - receive next char
#ifdef CHECK_TMOUT
if(tmout && Tms >= tmout){ // set overflow flag
bufovr = 1;
idatalen[rbufno] = 0;
}
tmout = Tms + TIMEOUT_MS;
if(!tmout) tmout = 1; // prevent 0
#endif
uint8_t rb = USART1->DR;
if(idatalen[rbufno] < UARTBUFSZI){ // put next char into buf
rbuf[rbufno][idatalen[rbufno]++] = rb;
if(rb == '\n'){ // got newline - line ready
linerdy = 1;
dlen = idatalen[rbufno];
recvdata = rbuf[rbufno];
// prepare other buffer
rbufno = !rbufno;
idatalen[rbufno] = 0;
#ifdef CHECK_TMOUT
// clear timeout at line end
tmout = 0;
#endif
}
}else{ // buffer overrun
bufovr = 1;
idatalen[rbufno] = 0;
#ifdef CHECK_TMOUT
tmout = 0;
#endif
}
}
}
// return string buffer with val
char *u2str(uint32_t val){
static char bufa[11];
char bufb[10];
int l = 0, bpos = 0;
if(!val){
bufa[0] = '0';
l = 1;
}else{
while(val){
bufb[l++] = val % 10 + '0';
val /= 10;
}
int i;
bpos += l;
for(i = 0; i < l; ++i){
bufa[--bpos] = bufb[i];
}
}
bufa[l + bpos] = 0;
return bufa;
}
// print 32bit unsigned int
void printu(uint32_t val){
usart_send(u2str(val));
}
// print 32bit unsigned int as hex
void printuhex(uint32_t val){
usart_send("0x");
uint8_t *ptr = (uint8_t*)&val + 3;
int i, j;
for(i = 0; i < 4; ++i, --ptr){
for(j = 1; j > -1; --j){
register uint8_t half = (*ptr >> (4*j)) & 0x0f;
if(half < 10) usart_putchar(half + '0');
else usart_putchar(half - 10 + 'a');
}
}
}
// dump memory buffer
void hexdump(uint8_t *arr, uint16_t len){
for(uint16_t l = 0; l < len; ++l, ++arr){
for(int16_t j = 1; j > -1; --j){
register uint8_t half = (*arr >> (4*j)) & 0x0f;
if(half < 10) usart_putchar(half + '0');
else usart_putchar(half - 10 + 'a');
}
if(l % 16 == 15) usart_putchar('\n');
else if(l & 1) usart_putchar(' ');
}
}
void dma1_channel4_isr(){
if(DMA1->ISR & DMA_ISR_TCIF4){ // Tx
DMA1->IFCR = DMA_IFCR_CTCIF4; // clear TC flag
txrdy = 1;
}
}

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/*
* usart.h
*
* Copyright 2017 Edward V. Emelianoff <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 __USART_H__
#define __USART_H__
// input and output buffers size
#define UARTBUFSZI (32)
#define UARTBUFSZO (512)
// timeout between data bytes
#ifndef TIMEOUT_MS
#define TIMEOUT_MS (1500)
#endif
// macro for static strings
#define SEND(str) usart_send(str)
#define STR_HELPER(s) #s
#define STR(s) STR_HELPER(s)
#ifdef EBUG
#define MSG(str) do{SEND(__FILE__ " (L" STR(__LINE__) "): " str);}while(0)
#else
#define MSG(str)
#endif
#define usartrx() (linerdy)
#define usartovr() (bufovr)
extern volatile int linerdy, bufovr, txrdy;
void transmit_tbuf();
void usart_setup();
int usart_getline(char **line);
void usart_send(const char *str);
void newline();
void usart_putchar(const char ch);
char *u2str(uint32_t val);
void printu(uint32_t val);
void printuhex(uint32_t val);
void hexdump(uint8_t *arr, uint16_t len);
#endif // __USART_H__

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/*
* geany_encoding=koi8-r
* usb.c - base functions for different USB types
*
* Copyright 2018 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.
*
*/
#include "usb.h"
#include "usb_lib.h"
#include "usart.h"
#include <string.h> // memcpy, memmove
// incoming buffer size
#define IDATASZ (256)
static uint8_t incoming_data[IDATASZ];
static uint8_t ovfl = 0;
static uint16_t idatalen = 0;
static volatile uint8_t tx_succesfull = 0;
static int8_t usbON = 0; // ==1 when USB fully configured
// interrupt IN handler (never used?)
static uint16_t EP1_Handler(ep_t ep){
if (ep.rx_flag){
ep.status = SET_VALID_TX(ep.status);
ep.status = KEEP_STAT_RX(ep.status);
}else if (ep.tx_flag){
ep.status = SET_VALID_RX(ep.status);
ep.status = SET_STALL_TX(ep.status);
}
return ep.status;
}
// data IN/OUT handler
static uint16_t EP23_Handler(ep_t ep){
if(ep.rx_flag){
int rd = ep.rx_cnt, rest = IDATASZ - idatalen;
if(rd){
if(rd <= rest){
idatalen += EP_Read(2, &incoming_data[idatalen]);
ovfl = 0;
}else{
ep.status = SET_NAK_RX(ep.status);
ovfl = 1;
return ep.status;
}
}
// end of transaction: clear DTOGs
ep.status = CLEAR_DTOG_RX(ep.status);
ep.status = CLEAR_DTOG_TX(ep.status);
ep.status = SET_STALL_TX(ep.status);
}else if (ep.tx_flag){
ep.status = KEEP_STAT_TX(ep.status);
tx_succesfull = 1;
}
ep.status = SET_VALID_RX(ep.status);
return ep.status;
}
void USB_setup(){
RCC->APB1ENR |= RCC_APB1ENR_CRSEN | RCC_APB1ENR_USBEN; // enable CRS (hsi48 sync) & USB
RCC->CFGR3 &= ~RCC_CFGR3_USBSW; // reset USB
RCC->CR2 |= RCC_CR2_HSI48ON; // turn ON HSI48
uint32_t tmout = 16000000;
while(!(RCC->CR2 & RCC_CR2_HSI48RDY)){if(--tmout == 0) break;}
FLASH->ACR = FLASH_ACR_PRFTBE | FLASH_ACR_LATENCY;
CRS->CFGR &= ~CRS_CFGR_SYNCSRC;
CRS->CFGR |= CRS_CFGR_SYNCSRC_1; // USB SOF selected as sync source
CRS->CR |= CRS_CR_AUTOTRIMEN; // enable auto trim
CRS->CR |= CRS_CR_CEN; // enable freq counter & block CRS->CFGR as read-only
RCC->CFGR |= RCC_CFGR_SW;
// allow RESET and CTRM interrupts
USB->CNTR = USB_CNTR_RESETM | USB_CNTR_CTRM;
// clear flags
USB->ISTR = 0;
// and activate pullup
USB->BCDR |= USB_BCDR_DPPU;
NVIC_EnableIRQ(USB_IRQn);
}
void usb_proc(){
if(USB_GetState() == USB_CONFIGURE_STATE){ // USB configured - activate other endpoints
if(!usbON){ // endpoints not activated
// 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, 10, 0, EP1_Handler); // IN1 - transmit
EP_Init(2, EP_TYPE_BULK, 0, USB_RXBUFSZ, EP23_Handler); // OUT2 - receive data
EP_Init(3, EP_TYPE_BULK, USB_TXBUFSZ, 0, EP23_Handler); // IN3 - transmit data
usbON = 1;
}
}else{
usbON = 0;
}
}
void USB_send(char *buf){
uint16_t l = 0, ctr = 0;
char *p = buf;
while(*p++) ++l;
while(l){
uint16_t s = (l > USB_TXBUFSZ) ? USB_TXBUFSZ : l;
tx_succesfull = 0;
EP_Write(3, (uint8_t*)&buf[ctr], s);
uint32_t ctra = 1000000;
while(--ctra && tx_succesfull == 0);
l -= s;
ctr += s;
}
}
/**
* @brief USB_receive
* @param buf (i) - buffer for received data
* @param bufsize - its size
* @return amount of received bytes
*/
int USB_receive(char *buf, int bufsize){
if(!bufsize || !idatalen) return 0;
USB->CNTR = 0;
int sz = (idatalen > bufsize) ? bufsize : idatalen, rest = idatalen - sz;
memcpy(buf, incoming_data, sz);
if(rest > 0){
memmove(incoming_data, &incoming_data[sz], rest);
idatalen = rest;
}else idatalen = 0;
if(ovfl){
EP23_Handler(endpoints[2]);
uint16_t epstatus = USB->EPnR[2];
epstatus = CLEAR_DTOG_RX(epstatus);
epstatus = SET_VALID_RX(epstatus);
USB->EPnR[2] = epstatus;
}
USB->CNTR = USB_CNTR_RESETM | USB_CNTR_CTRM;
return sz;
}
/**
* @brief USB_configured
* @return 1 if USB is in configured state
*/
int USB_configured(){
return usbON;
}

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/*
* geany_encoding=koi8-r
* usb.h
*
* Copyright 2018 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 __USB_H__
#define __USB_H__
#include "hardware.h"
#define BUFFSIZE (64)
void USB_setup();
void usb_proc();
void USB_send(char *buf);
int USB_receive(char *buf, int bufsize);
int USB_configured();
#endif // __USB_H__

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/*
* geany_encoding=koi8-r
* usb_defs.h
*
* Copyright 2018 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 __USB_DEFS_H__
#define __USB_DEFS_H__
#include <stm32f1.h>
/**
* Buffers size definition
**/
// !!! when working with CAN bus change USB_BTABLE_SIZE to 768 !!!
#define USB_BTABLE_SIZE 1024
// 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
#define USB_BTABLE_BASE 0x40006000
#undef USB_BTABLE
#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
#define USB_TypeDef USB_TypeDef_custom
typedef struct{
__IO uint32_t EPnR[8];
__IO uint32_t RESERVED1;
__IO uint32_t RESERVED2;
__IO uint32_t RESERVED3;
__IO uint32_t RESERVED4;
__IO uint32_t RESERVED5;
__IO uint32_t RESERVED6;
__IO uint32_t RESERVED7;
__IO uint32_t RESERVED8;
__IO uint32_t CNTR;
__IO uint32_t ISTR;
__IO uint32_t FNR;
__IO uint32_t DADDR;
__IO uint32_t BTABLE;
__IO uint32_t LPMCSR;
__IO uint32_t BCDR;
} USB_TypeDef;
typedef struct{
__IO uint16_t USB_ADDR_TX;
__IO uint16_t USB_COUNT_TX;
__IO uint16_t USB_ADDR_RX;
__IO uint16_t USB_COUNT_RX;
} USB_EPDATA_TypeDef;
typedef struct{
__IO USB_EPDATA_TypeDef EP[8];
} USB_BtableDef;
#endif // __USB_DEFS_H__

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/*
* geany_encoding=koi8-r
* usb_lib.c
*
* Copyright 2018 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.
*
*/
#include <stdint.h>
#include "usb_lib.h"
#include <string.h> // memcpy
#include "usart.h"
ep_t endpoints[ENDPOINTS_NUM];
static 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;}
// 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;
EP_WriteIRQ(0, buf, size);
}
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_CONFIGURE_STATE;
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
* @param ep - endpoint state
* @return data written to EP0R
*/
static uint16_t EP0_Handler(ep_t ep){
uint16_t epstatus = ep.status; // EP0R on input -> return this value after modifications
uint8_t reqtype = setup_packet.bmRequestType & 0x7f;
uint8_t dev2host = (setup_packet.bmRequestType & 0x80) ? 1 : 0;
if ((ep.rx_flag) && (ep.setup_flag)){
switch(reqtype){
case STANDARD_DEVICE_REQUEST_TYPE: // standard device request
if(dev2host){
std_d2h_req();
}else{
std_h2d_req();
// send ZLP
EP_WriteIRQ(0, (uint8_t *)0, 0);
}
epstatus = SET_NAK_RX(epstatus);
epstatus = SET_VALID_TX(epstatus);
break;
case STANDARD_ENDPOINT_REQUEST_TYPE: // standard endpoint request
if(setup_packet.bRequest == CLEAR_FEATURE){
// send ZLP
EP_WriteIRQ(0, (uint8_t *)0, 0);
epstatus = SET_NAK_RX(epstatus);
epstatus = SET_VALID_TX(epstatus);
}
break;
case VENDOR_REQUEST_TYPE:
vendor_handler(&setup_packet);
epstatus = SET_NAK_RX(epstatus);
epstatus = SET_VALID_TX(epstatus);
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:
clstate_handler(setup_packet.wValue);
break;
case SEND_BREAK:
break_handler();
break;
default:
break;
}
if(!dev2host) EP_WriteIRQ(0, (uint8_t *)0, 0); // write acknowledgement
epstatus = SET_VALID_RX(epstatus);
epstatus = SET_VALID_TX(epstatus);
break;
default:
EP_WriteIRQ(0, (uint8_t *)0, 0);
epstatus = SET_NAK_RX(epstatus);
epstatus = SET_VALID_TX(epstatus);
}
}else if (ep.rx_flag){ // got data over EP0 or host acknowlegement
if(ep.rx_cnt){
EP_WriteIRQ(0, (uint8_t *)0, 0);
if(setup_packet.bRequest == SET_LINE_CODING){
linecoding_handler((usb_LineCoding*)ep0databuf);
}
}
// Close transaction
epstatus = CLEAR_DTOG_RX(epstatus);
epstatus = CLEAR_DTOG_TX(epstatus);
// wait for new data from host
epstatus = SET_VALID_RX(epstatus);
epstatus = SET_STALL_TX(epstatus);
} else if (ep.tx_flag){ // 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_ADRESSED_STATE;
}
// end of transaction
epstatus = CLEAR_DTOG_RX(epstatus);
epstatus = CLEAR_DTOG_TX(epstatus);
epstatus = SET_VALID_RX(epstatus);
epstatus = SET_VALID_TX(epstatus);
}
return epstatus;
}
static uint16_t lastaddr = USB_EP0_BASEADDR;
/**
* Endpoint initialisation
* !!! when working with CAN bus change USB_BTABLE_SIZE to 768 !!!
* @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, uint16_t (*func)(ep_t ep)){
if(number >= ENDPOINTS_NUM) 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 > 992) 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);
lastaddr += txsz;
USB_BTABLE->EP[number].USB_COUNT_TX = 0;
USB_BTABLE->EP[number].USB_ADDR_RX = lastaddr;
endpoints[number].rx_buf = (uint8_t *)(USB_BTABLE_BASE + lastaddr);
lastaddr += rxsz;
// buffer size: Table127 of RM
USB_BTABLE->EP[number].USB_COUNT_RX = countrx << 10;
endpoints[number].func = func;
return 0;
}
// standard IRQ handler
void usb_isr(){
if (USB->ISTR & USB_ISTR_RESET){
// Reinit registers
USB->CNTR = USB_CNTR_RESETM | USB_CNTR_CTRM;
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 = USB_EP0_BASEADDR; // roll back to beginning of buffer
EP_Init(0, EP_TYPE_CONTROL, USB_EP0_BUFSZ, USB_EP0_BUFSZ, EP0_Handler);
// clear address, leave only enable bit
USB->DADDR = USB_DADDR_EF;
// state is default - wait for enumeration
USB_Dev.USB_Status = USB_DEFAULT_STATE;
}
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];
// Calculate flags
endpoints[n].rx_flag = (epstatus & USB_EPnR_CTR_RX) ? 1 : 0;
endpoints[n].setup_flag = (epstatus & USB_EPnR_SETUP) ? 1 : 0;
endpoints[n].tx_flag = (epstatus & USB_EPnR_CTR_TX) ? 1 : 0;
// 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
memcpy(&setup_packet, endpoints[0].rx_buf, sizeof(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;
memcpy(ep0databuf, endpoints[0].rx_buf, ep0dbuflen);
}
}
}else{ // IN interrupt - transmit data, only CTR_TX == 1
// enumeration end could be here (if EP0)
}
// prepare status field for EP handler
endpoints[n].status = epstatus;
// call EP handler (even if it will change EPnR, it should return new status)
epstatus = endpoints[n].func(endpoints[n]);
// keep DTOG state
epstatus = KEEP_DTOG_TX(epstatus);
epstatus = KEEP_DTOG_RX(epstatus);
// clear all RX/TX flags
epstatus = CLEAR_CTR_RX(epstatus);
epstatus = CLEAR_CTR_TX(epstatus);
// refresh EPnR
USB->EPnR[n] = epstatus;
}
}
/**
* 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 > USB_TXBUFSZ) size = USB_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;
for (i = 0; i < N2; i++){
endpoints[number].tx_buf[i] = 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){
uint16_t status = USB->EPnR[number];
EP_WriteIRQ(number, buf, size);
status = SET_NAK_RX(status);
status = SET_VALID_TX(status);
status = KEEP_DTOG_TX(status);
status = KEEP_DTOG_RX(status);
USB->EPnR[number] = status;
}
/*
* 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, uint8_t *buf){
int n = endpoints[number].rx_cnt;
if(n){
for(int i = 0; i < n; ++i)
buf[i] = endpoints[number].rx_buf[i];
}
return n;
}
// USB status
uint8_t USB_GetState(){
return USB_Dev.USB_Status;
}

202
F1-nolib/F1_testbrd/usb_lib.h Normal file
View File

@@ -0,0 +1,202 @@
/*
* geany_encoding=koi8-r
* usb_lib.h
*
* Copyright 2018 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 __USB_LIB_H__
#define __USB_LIB_H__
#include <wchar.h>
#include "usb_defs.h"
#define EP0DATABUF_SIZE (64)
// Max EP amount (EP0 + other used)
#define ENDPOINTS_NUM 4
// 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
// EPnR bits manipulation
#define CLEAR_DTOG_RX(R) (R & USB_EPnR_DTOG_RX) ? R : (R & (~USB_EPnR_DTOG_RX))
#define SET_DTOG_RX(R) (R & USB_EPnR_DTOG_RX) ? (R & (~USB_EPnR_DTOG_RX)) : R
#define TOGGLE_DTOG_RX(R) (R | USB_EPnR_DTOG_RX)
#define KEEP_DTOG_RX(R) (R & (~USB_EPnR_DTOG_RX))
#define CLEAR_DTOG_TX(R) (R & USB_EPnR_DTOG_TX) ? R : (R & (~USB_EPnR_DTOG_TX))
#define SET_DTOG_TX(R) (R & USB_EPnR_DTOG_TX) ? (R & (~USB_EPnR_DTOG_TX)) : R
#define TOGGLE_DTOG_TX(R) (R | USB_EPnR_DTOG_TX)
#define KEEP_DTOG_TX(R) (R & (~USB_EPnR_DTOG_TX))
#define SET_VALID_RX(R) ((R & USB_EPnR_STAT_RX) ^ USB_EPnR_STAT_RX) | (R & (~USB_EPnR_STAT_RX))
#define SET_NAK_RX(R) ((R & USB_EPnR_STAT_RX) ^ USB_EPnR_STAT_RX_1) | (R & (~USB_EPnR_STAT_RX))
#define SET_STALL_RX(R) ((R & USB_EPnR_STAT_RX) ^ USB_EPnR_STAT_RX_0) | (R & (~USB_EPnR_STAT_RX))
#define KEEP_STAT_RX(R) (R & (~USB_EPnR_STAT_RX))
#define SET_VALID_TX(R) ((R & USB_EPnR_STAT_TX) ^ USB_EPnR_STAT_TX) | (R & (~USB_EPnR_STAT_TX))
#define SET_NAK_TX(R) ((R & USB_EPnR_STAT_TX) ^ USB_EPnR_STAT_TX_1) | (R & (~USB_EPnR_STAT_TX))
#define SET_STALL_TX(R) ((R & USB_EPnR_STAT_TX) ^ USB_EPnR_STAT_TX_0) | (R & (~USB_EPnR_STAT_TX))
#define KEEP_STAT_TX(R) (R & (~USB_EPnR_STAT_TX))
#define CLEAR_CTR_RX(R) (R & (~USB_EPnR_CTR_RX))
#define CLEAR_CTR_TX(R) (R & (~USB_EPnR_CTR_TX))
#define CLEAR_CTR_RX_TX(R) (R & (~(USB_EPnR_CTR_TX | USB_EPnR_CTR_RX)))
// USB state: uninitialized, addressed, ready for use
#define USB_DEFAULT_STATE 0
#define USB_ADRESSED_STATE 1
#define USB_CONFIGURE_STATE 2
// 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 __ep_t{
uint16_t *tx_buf; // transmission buffer address
uint8_t *rx_buf; // reception buffer address
uint16_t (*func)(); // endpoint action function
uint16_t status; // status flags
unsigned rx_cnt : 10; // received data counter
unsigned tx_flag : 1; // transmission flag
unsigned rx_flag : 1; // reception flag
unsigned setup_flag : 1; // this is setup packet (only for EP0)
} 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[];
void USB_Init();
uint8_t USB_GetState();
int EP_Init(uint8_t number, uint8_t type, uint16_t txsz, uint16_t rxsz, uint16_t (*func)(ep_t ep));
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, uint8_t *buf);
usb_LineCoding getLineCoding();
void WEAK linecoding_handler(usb_LineCoding *lc);
void WEAK clstate_handler(uint16_t val);
void WEAK break_handler();
void WEAK vendor_handler(config_pack_t *packet);
#endif // __USB_LIB_H__

16
F1-nolib/inc/Fx/stm32f1.h
View File

@@ -179,6 +179,16 @@ IDR - input, ODR - output (or pullups management),
#define CRH(pin, cnfmode) ((cnfmode) << ((pin-8)*4))
/************************* ADC *************************/
/* inner termometer calibration values
* Temp = (V25 - Vsense)/Avg_Slope + 25
*/
#define VREFINT_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7BA))
/************************* IWDG *************************/
#define IWDG_REFRESH (uint32_t)(0x0000AAAA)
#define IWDG_WRITE_ACCESS (uint32_t)(0x00005555)
#define IWDG_START (uint32_t)(0x0000CCCC)
#if 0
@@ -190,7 +200,6 @@ IDR - input, ODR - output (or pullups management),
#define TEMP110_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7C2))
#define TEMP30_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7B8))
// VDDA_Actual = 3.3V * VREFINT_CAL / average vref value
#define VREFINT_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7BA))
#define VDD_CALIB ((uint16_t) (330))
#define VDD_APPLI ((uint16_t) (300))
@@ -200,11 +209,6 @@ IDR - input, ODR - output (or pullups management),
// set address/character match value
#define USART_CR2_ADD_VAL(x) ((x) << USART_CR2_ADD_SHIFT)
/************************* IWDG *************************/
#define IWDG_REFRESH (uint32_t)(0x0000AAAA)
#define IWDG_WRITE_ACCESS (uint32_t)(0x00005555)
#define IWDG_START (uint32_t)(0x0000CCCC)
//#define do{}while(0)