Hello World example for interfacing up to four rotary encoders to the STM32's timer/counter hardware, without interrupts.
Diff: Encoder/EncoderInit.cpp
- Revision:
- 1:cd7b42c99ff8
- Parent:
- 0:ee5cb967aa17
--- a/Encoder/EncoderInit.cpp Sat Jan 10 20:06:07 2015 +0000
+++ b/Encoder/EncoderInit.cpp Sun Oct 04 11:58:58 2015 +0000
@@ -1,32 +1,33 @@
#include "mbed.h"
-void EncoderInit(TIM_Encoder_InitTypeDef encoder, TIM_HandleTypeDef timer, TIM_TypeDef *TIMx, uint32_t maxcount, uint32_t encmode)
+void EncoderInit(TIM_Encoder_InitTypeDef * encoder, TIM_HandleTypeDef * timer, TIM_TypeDef * TIMx, uint32_t maxcount, uint32_t encmode)
{
- timer.Instance = TIMx;
- timer.Init.Period = maxcount;
- timer.Init.CounterMode = TIM_COUNTERMODE_UP;
- timer.Init.Prescaler = 0;
- timer.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- encoder.EncoderMode = encmode;
+ timer->Instance = TIMx;
+ timer->Init.Period = maxcount;
+ timer->Init.CounterMode = TIM_COUNTERMODE_UP;
+ timer->Init.Prescaler = 0;
+ timer->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
- encoder.IC1Filter = 0x0F;
- encoder.IC1Polarity = TIM_INPUTCHANNELPOLARITY_RISING;
- encoder.IC1Prescaler = TIM_ICPSC_DIV4;
- encoder.IC1Selection = TIM_ICSELECTION_DIRECTTI;
+ encoder->EncoderMode = encmode;
- encoder.IC2Filter = 0x0F;
- encoder.IC2Polarity = TIM_INPUTCHANNELPOLARITY_FALLING;
- encoder.IC2Prescaler = TIM_ICPSC_DIV4;
- encoder.IC2Selection = TIM_ICSELECTION_DIRECTTI;
+ encoder->IC1Filter = 0x0F;
+ encoder->IC1Polarity = TIM_INPUTCHANNELPOLARITY_RISING;
+ encoder->IC1Prescaler = TIM_ICPSC_DIV4;
+ encoder->IC1Selection = TIM_ICSELECTION_DIRECTTI;
+
+ encoder->IC2Filter = 0x0F;
+ encoder->IC2Polarity = TIM_INPUTCHANNELPOLARITY_FALLING;
+ encoder->IC2Prescaler = TIM_ICPSC_DIV4;
+ encoder->IC2Selection = TIM_ICSELECTION_DIRECTTI;
- if (HAL_TIM_Encoder_Init(&timer, &encoder) != HAL_OK) {
+ if (HAL_TIM_Encoder_Init(timer, encoder) != HAL_OK) {
printf("Couldn't Init Encoder\r\n");
while (1) {}
}
- if(HAL_TIM_Encoder_Start(&timer,TIM_CHANNEL_1)!=HAL_OK) {
+ if(HAL_TIM_Encoder_Start(timer,TIM_CHANNEL_1)!=HAL_OK) {
printf("Couldn't Start Encoder\r\n");
while (1) {}
}