mirror of
https://github.com/eddyem/stm32samples.git
synced 2026-02-28 11:54:30 +03:00
hide deprecated code; make USB snippet common for F0/F1/F3
This commit is contained in:
Edward Emelianov
224
F0:F030,F042,F072/deprecated/pl2303/main.c
Normal file
224
F0:F030,F042,F072/deprecated/pl2303/main.c
Normal file
@@ -0,0 +1,224 @@
|
||||
/*
|
||||
* 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 "hardware.h"
|
||||
#include "usart.h"
|
||||
#include "usb.h"
|
||||
#include "usb_lib.h"
|
||||
|
||||
volatile uint32_t Tms = 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) */
|
||||
}
|
||||
/*
|
||||
static usb_LineCoding new_lc;
|
||||
static uint8_t lcchange = 0;
|
||||
static void show_new_lc(){
|
||||
SEND("got new linecoding:");
|
||||
SEND(" baudrate="); printu(new_lc.dwDTERate);
|
||||
SEND(", charFormat="); printu(new_lc.bCharFormat);
|
||||
SEND(" (");
|
||||
switch(new_lc.bCharFormat){
|
||||
case USB_CDC_1_STOP_BITS:
|
||||
usart_putchar('1');
|
||||
break;
|
||||
case USB_CDC_1_5_STOP_BITS:
|
||||
SEND("1.5");
|
||||
break;
|
||||
case USB_CDC_2_STOP_BITS:
|
||||
usart_putchar('2');
|
||||
break;
|
||||
default:
|
||||
usart_putchar('?');
|
||||
}
|
||||
SEND(" stop bits), parityType="); printu(new_lc.bParityType);
|
||||
SEND(" (");
|
||||
switch(new_lc.bParityType){
|
||||
case USB_CDC_NO_PARITY:
|
||||
SEND("no");
|
||||
break;
|
||||
case USB_CDC_ODD_PARITY:
|
||||
SEND("odd");
|
||||
break;
|
||||
case USB_CDC_EVEN_PARITY:
|
||||
SEND("even");
|
||||
break;
|
||||
case USB_CDC_MARK_PARITY:
|
||||
SEND("mark");
|
||||
break;
|
||||
case USB_CDC_SPACE_PARITY:
|
||||
SEND("space");
|
||||
break;
|
||||
default:
|
||||
SEND("unknown");
|
||||
}
|
||||
SEND(" parity), dataBits="); printu(new_lc.bDataBits);
|
||||
usart_putchar('\n');
|
||||
lcchange = 0;
|
||||
}
|
||||
|
||||
void linecoding_handler(usb_LineCoding *lc){
|
||||
memcpy(&new_lc, lc, sizeof(usb_LineCoding));
|
||||
lcchange = 1;
|
||||
}
|
||||
|
||||
void clstate_handler(uint16_t val){
|
||||
SEND("change control line state to ");
|
||||
printu(val);
|
||||
if(val & CONTROL_DTR) SEND(" (DTR)");
|
||||
if(val & CONTROL_RTS) SEND(" (RTS)");
|
||||
usart_putchar('\n');
|
||||
}
|
||||
*/
|
||||
|
||||
// usb getline
|
||||
char *get_USB(){
|
||||
static char tmpbuf[512], *curptr = tmpbuf;
|
||||
static int rest = 511;
|
||||
uint8_t x = USB_receive((uint8_t*)curptr);
|
||||
curptr[x] = 0;
|
||||
if(!x) return NULL;
|
||||
if(curptr[x-1] == '\n'){
|
||||
#ifdef EBUG
|
||||
DBG("fullline");
|
||||
IWDG->KR = IWDG_REFRESH;
|
||||
SEND(tmpbuf);
|
||||
transmit_tbuf();
|
||||
#endif
|
||||
curptr = tmpbuf;
|
||||
rest = 511;
|
||||
return tmpbuf;
|
||||
}
|
||||
curptr += x; rest -= x;
|
||||
if(rest <= 0){ // buffer overflow
|
||||
curptr = tmpbuf;
|
||||
rest = 511;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#define USND(str) do{USB_send((uint8_t*)str, sizeof(str)-1);}while(0)
|
||||
static const char *parse_cmd(const char *buf){
|
||||
if(buf[1] != '\n') return buf;
|
||||
switch(*buf){
|
||||
case 'L':
|
||||
USND("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 "OK\n";
|
||||
break;
|
||||
case 'R':
|
||||
USND("Soft reset\n");
|
||||
NVIC_SystemReset();
|
||||
break;
|
||||
case 'S':
|
||||
USND("Test string for USB\n");
|
||||
return "OK\n";
|
||||
break;
|
||||
case 'W':
|
||||
USND("Wait for reboot\n");
|
||||
while(1){nop();};
|
||||
break;
|
||||
default: // help
|
||||
return
|
||||
"'L' - send long string over USB\n"
|
||||
"'R' - software reset\n"
|
||||
"'S' - send short string over USB\n"
|
||||
"'W' - test watchdog\n"
|
||||
;
|
||||
break;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int main(void){
|
||||
uint32_t lastT = 0;
|
||||
sysreset();
|
||||
SysTick_Config(6000, 1);
|
||||
gpio_setup();
|
||||
usart_setup();
|
||||
|
||||
MSG("Run");
|
||||
|
||||
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 > 499){
|
||||
LED_blink(LED0);
|
||||
lastT = Tms;
|
||||
transmit_tbuf(); // non-blocking transmission of data from UART buffer every 0.5s
|
||||
}
|
||||
usb_proc();
|
||||
char *txt, *ans;
|
||||
if(usartrx()){
|
||||
usart_getline(&txt);
|
||||
ans = (char*)parse_cmd(txt);
|
||||
if(ans) usart_send(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((uint8_t*)ans, l);
|
||||
}
|
||||
}
|
||||
/*if(lcchange){
|
||||
show_new_lc();
|
||||
}*/
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user