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fix dc motor switching frequency

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This commit is contained in:
Jasper Güldenstein 2020-11-15 17:36:16 +01:00
parent 9ccbfa5cac
commit ea88a3601e
1 changed files with 2 additions and 4 deletions
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6
keil_project/Services/DcMotor.c
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@ -3,14 +3,12 @@
#include "stm32f1xx_ll_bus.h" #include "stm32f1xx_ll_bus.h"
#include "stm32f1xx_ll_tim.h" #include "stm32f1xx_ll_tim.h"
#define ARR_DC_MOTOR 50000 #define ARR_DC_MOTOR 100
void DC_MOTOR_Init(void) { void DC_MOTOR_Init(void) {
// use TIM2 since it has pa1 at channel 2 output
// setup timer 2 // setup timer 2
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM2); LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM2);
LL_TIM_InitTypeDef tim_init; LL_TIM_InitTypeDef tim_init;
// todo check switching behavior of the mosfet to determine period of switching tim_init.Prescaler = 35;
tim_init.Prescaler = 71;
tim_init.Autoreload = ARR_DC_MOTOR - 1; tim_init.Autoreload = ARR_DC_MOTOR - 1;
tim_init.ClockDivision=LL_TIM_CLOCKDIVISION_DIV1; tim_init.ClockDivision=LL_TIM_CLOCKDIVISION_DIV1;
tim_init.CounterMode=LL_TIM_COUNTERMODE_UP; tim_init.CounterMode=LL_TIM_COUNTERMODE_UP;