Jack Hansdampf / Mbed OS TIM2_IRQ_F401

Testprogramm für Hardwaretimer TIM2 und TIM3 mit Nucleo-F401RE

Dependencies:   mbed-os

main.cpp@3:b0716d14c3bf, 2021-10-14 (annotated)

Committer:
jack1930
Date:
Thu Oct 14 10:10:33 2021 +0000
Revision:
3:b0716d14c3bf
Parent:
2:a5ee88ab46b2 
F401

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JoergSturm 0:45170c77adc7 1 #include "mbed.h"
JoergSturm 1:17722afc5909 2
JoergSturm 0:45170c77adc7 3
JoergSturm 0:45170c77adc7 4 DigitalOut myled(PC_0);
jack1930 2:a5ee88ab46b2 5 DigitalOut myled2(PC_1);
jack1930 2:a5ee88ab46b2 6 DigitalOut PC2(PC_2);
JoergSturm 0:45170c77adc7 7
JoergSturm 1:17722afc5909 8 void EX1IRQhandler(void)
JoergSturm 1:17722afc5909 9 {
jack1930 2:a5ee88ab46b2 10 PC2=!PC2;
JoergSturm 1:17722afc5909 11 }
JoergSturm 0:45170c77adc7 12
jack1930 3:b0716d14c3bf 13 void TIM2_IRQHandler(void)
JoergSturm 0:45170c77adc7 14 {
JoergSturm 0:45170c77adc7 15 myled=!myled;
jack1930 3:b0716d14c3bf 16 TIM2->SR=0;
jack1930 3:b0716d14c3bf 17 HAL_NVIC_ClearPendingIRQ(TIM2_IRQn);
JoergSturm 0:45170c77adc7 18 }
jack1930 3:b0716d14c3bf 19 void TIM3_IRQHandler(void)
jack1930 2:a5ee88ab46b2 20 {
jack1930 2:a5ee88ab46b2 21 myled2=!myled2;
jack1930 3:b0716d14c3bf 22 TIM3->SR=0;
jack1930 3:b0716d14c3bf 23 HAL_NVIC_ClearPendingIRQ(TIM3_IRQn);
jack1930 2:a5ee88ab46b2 24 }
jack1930 2:a5ee88ab46b2 25 InterruptIn PA1(PA_1);
jack1930 3:b0716d14c3bf 26 void EX1init(void);
jack1930 3:b0716d14c3bf 27
jack1930 3:b0716d14c3bf 28
jack1930 3:b0716d14c3bf 29 void NVIC_Init(void)
jack1930 3:b0716d14c3bf 30 {
jack1930 3:b0716d14c3bf 31 /* TIM2_IRQn interrupt configuration */
jack1930 3:b0716d14c3bf 32 NVIC_SetVector(TIM2_IRQn, (uint32_t)&TIM2_IRQHandler);
jack1930 3:b0716d14c3bf 33 HAL_NVIC_EnableIRQ(TIM2_IRQn);
jack1930 3:b0716d14c3bf 34 /* TIM3_IRQn interrupt configuration */
jack1930 3:b0716d14c3bf 35 NVIC_SetVector(TIM3_IRQn, (uint32_t)&TIM3_IRQHandler);
jack1930 3:b0716d14c3bf 36 HAL_NVIC_EnableIRQ(TIM3_IRQn);
jack1930 3:b0716d14c3bf 37 }
jack1930 3:b0716d14c3bf 38
jack1930 3:b0716d14c3bf 39 /* TIM2 init function */
jack1930 3:b0716d14c3bf 40 void TIM2_Init(void)
jack1930 3:b0716d14c3bf 41 {
jack1930 3:b0716d14c3bf 42 RCC->APB1ENR|=0b00001; //Clock Enable
jack1930 3:b0716d14c3bf 43 TIM2->PSC=3199; //Prescaler 100µs
jack1930 3:b0716d14c3bf 44 TIM2->ARR=5000; //Autoreload 5000*100µs = 0,5s
jack1930 3:b0716d14c3bf 45 TIM2->DIER=1; //UIE = 1 (Update Interrupt Enable)
jack1930 3:b0716d14c3bf 46 TIM2->SR=0; //UIF =0 (Update Interrupt Flag)
jack1930 3:b0716d14c3bf 47 TIM2->CR1=1; //CEN=1 (Counter Enable)
jack1930 3:b0716d14c3bf 48 }
jack1930 3:b0716d14c3bf 49 void TIM3_Init(void);
jack1930 3:b0716d14c3bf 50
jack1930 3:b0716d14c3bf 51
jack1930 3:b0716d14c3bf 52
jack1930 3:b0716d14c3bf 53 int main()
jack1930 3:b0716d14c3bf 54 {
jack1930 3:b0716d14c3bf 55 TIM2_Init();
jack1930 3:b0716d14c3bf 56 TIM3_Init();
jack1930 3:b0716d14c3bf 57 EX1init();
jack1930 3:b0716d14c3bf 58 NVIC_Init();
jack1930 3:b0716d14c3bf 59 while(1) {
jack1930 3:b0716d14c3bf 60 }
jack1930 3:b0716d14c3bf 61
jack1930 3:b0716d14c3bf 62 }
jack1930 3:b0716d14c3bf 63
JoergSturm 1:17722afc5909 64 void EX1init(void)
JoergSturm 1:17722afc5909 65 {
jack1930 2:a5ee88ab46b2 66 PA1.rise(&EX1IRQhandler);
jack1930 2:a5ee88ab46b2 67 PA1.mode(PullDown);
JoergSturm 1:17722afc5909 68 }
JoergSturm 1:17722afc5909 69
jack1930 3:b0716d14c3bf 70 void TIM3_Init(void)
JoergSturm 0:45170c77adc7 71 {
jack1930 3:b0716d14c3bf 72 RCC->APB1ENR|=0b000010; //Clock Enable
jack1930 3:b0716d14c3bf 73 TIM3->PSC=3199; //Prescaler 100µs
jack1930 3:b0716d14c3bf 74 TIM3->ARR=15000; //Autoreload 15000*100µs = 1,5s
jack1930 3:b0716d14c3bf 75 TIM3->DIER=1; //UIE = 1 (Update Interrupt Enable)
jack1930 3:b0716d14c3bf 76 TIM3->SR=0; //UIF =0 (Update Interrupt Flag)
jack1930 3:b0716d14c3bf 77 TIM3->CR1=1; //CEN=1 (Counter Enable)
JoergSturm 0:45170c77adc7 78 }