mirror of
https://github.com/eddyem/mmpp.git
synced 2025-12-06 18:45:17 +03:00
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*
|
|
* 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 "stm32f0.h"
|
|
#include "usart.h"
|
|
#include "adc.h"
|
|
#include "flash.h"
|
|
#include "proto.h"
|
|
|
|
volatile uint32_t Tms = 0;
|
|
|
|
/* Called when systick fires */
|
|
void sys_tick_handler(void){
|
|
++Tms;
|
|
}
|
|
|
|
/*
|
|
* PA4 (Tim14Ch1) M1STEP
|
|
* PA6 (Tim3Ch1) M2STEP
|
|
* PA5 - M2EN
|
|
* PA7 - M2DIR
|
|
* PB1 - 12V on/off
|
|
* PF0 - M1EN
|
|
* PF1 - M1DIR
|
|
*/
|
|
static void gpio_setup(void){
|
|
// Enable clocks to the GPIO subsystems
|
|
RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN | RCC_AHBENR_GPIOFEN;
|
|
// PA0..3, PA13, PA14 - AIN; PA4..7 - PUPD;
|
|
GPIOA->MODER = GPIO_MODER_MODER0_AI | GPIO_MODER_MODER1_AI | GPIO_MODER_MODER2_AI |
|
|
GPIO_MODER_MODER3_AI | GPIO_MODER_MODER13_AI | GPIO_MODER_MODER14_AI |
|
|
GPIO_MODER_MODER4_O | GPIO_MODER_MODER5_O | GPIO_MODER_MODER6_O | GPIO_MODER_MODER7_O;
|
|
GPIOA->OSPEEDR = 0; // all low speed
|
|
GPIOA->PUPDR = 0; // clear pull-down for PA14&PA13
|
|
// PA4 - Tim14Ch1 (AF4), PA6 - Tim3Ch1 (AF1)
|
|
GPIOA->AFR[0] = (GPIOA->AFR[0] &~ (GPIO_AFRL_AFRL4 | GPIO_AFRL_AFRL6))\
|
|
| (4 << (4 * 4)) | (1 << (6 * 4));
|
|
// PB1 - PUPD
|
|
GPIOB->MODER = GPIO_MODER_MODER1_O;
|
|
// PF0, PF1 - PUPD
|
|
GPIOF->MODER = GPIO_MODER_MODER0_O | GPIO_MODER_MODER1_O;
|
|
}
|
|
|
|
int main(void){
|
|
uint32_t lastT = 0;
|
|
uint32_t ostctr = 0;
|
|
#if 0
|
|
//def EBUG
|
|
uint32_t msgctr = 0;
|
|
#endif
|
|
char *txt = NULL;
|
|
sysreset();
|
|
SysTick_Config(6000, 1);
|
|
gpio_setup();
|
|
adc_setup();
|
|
USART1_config();
|
|
get_userconf();
|
|
//pin_set(GPIOA, 1<<5); // clear extern LED
|
|
while (1){
|
|
if(lastT > Tms || Tms - lastT > 499){
|
|
#ifdef EBUG
|
|
pin_toggle(GPIOA, 1<<4); // blink by onboard LED once per second
|
|
#endif
|
|
lastT = Tms;
|
|
}
|
|
if(usart1rx()){ // usart1 received data, store in in buffer
|
|
if(usart1_getline(&txt)){
|
|
txt = process_command(txt);
|
|
}else txt = NULL; // buffer overflow
|
|
}
|
|
#if 0
|
|
//def EBUG
|
|
if(msgctr > Tms || Tms - msgctr > 4999){ // once per 5 seconds
|
|
msgctr = Tms;
|
|
txt = "hello";
|
|
}
|
|
#endif
|
|
if(trbufisfull()){
|
|
write2trbuf("ERR");
|
|
usart1_send_blocking(gettrbuf());
|
|
}
|
|
cleartrbuf();
|
|
if(txt){ // text waits for sending
|
|
if(ALL_OK == usart1_send(txt)){
|
|
txt = NULL;
|
|
}
|
|
}
|
|
if(ostctr != Tms){
|
|
ostctr = Tms;
|
|
//
|
|
}
|
|
}
|
|
}
|
|
|