kopia lustrzana https://github.com/Qyon/STM32_RTTY
59 wiersze
1.4 KiB
C
59 wiersze
1.4 KiB
C
#include <stm32f10x.h>
|
|
#include <core_cm3.h>
|
|
#include <stm32f10x_rcc.h>
|
|
#include <misc.h>
|
|
#include <stm32f10x_tim.h>
|
|
#include "delay.h"
|
|
|
|
volatile uint8_t done;
|
|
|
|
void delay_init() {
|
|
TIM_TimeBaseInitTypeDef ts;
|
|
// TIM3 @ APB1 -> 6MHz WTF?!
|
|
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
|
|
RCC_APB1PeriphResetCmd(RCC_APB1Periph_TIM3, DISABLE);
|
|
|
|
ts.TIM_Prescaler = 6 - 1;
|
|
ts.TIM_CounterMode = TIM_CounterMode_Up;
|
|
ts.TIM_Period = 0;
|
|
ts.TIM_ClockDivision = TIM_CKD_DIV1;
|
|
ts.TIM_RepetitionCounter = 0;
|
|
|
|
TIM_TimeBaseInit(TIM3,&ts);
|
|
TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
|
|
TIM_ITConfig(TIM3,TIM_IT_Update, ENABLE);
|
|
NVIC_InitTypeDef NVIC_InitStructure; //create NVIC structure
|
|
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
|
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
|
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
|
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
|
NVIC_Init(&NVIC_InitStructure);
|
|
TIM_Cmd(TIM3, DISABLE);
|
|
}
|
|
|
|
void _delay_us(uint16_t us, uint8_t precise) {
|
|
TIM_Cmd(TIM3, DISABLE);
|
|
TIM_SetAutoreload(TIM3, us);
|
|
TIM_SetCounter(TIM3, 0);
|
|
TIM_Cmd(TIM3, ENABLE);
|
|
done = 0;
|
|
while(!done){
|
|
|
|
}
|
|
TIM_Cmd(TIM3, DISABLE);
|
|
}
|
|
|
|
inline void _delay_ms(uint32_t ms) {
|
|
while(ms-- > 0){
|
|
_delay_us(1000, 0);
|
|
}
|
|
}
|
|
|
|
void TIM3_IRQHandler(void) {
|
|
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) {
|
|
TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
|
|
done = 1;
|
|
}
|
|
}
|
|
|