Hello World example for interfacing up to four rotary encoders to the STM32's timer/counter hardware, without interrupts.

Dependencies:   mbed-dev

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) {}
     }