Posted on December 13, 2014 at 13:01Thank you Clive but sadly I couldn't get a solution out of that. It looks like the parameters are set correctly in my code (except for a different mapping of the pins made automatically by STCubeMX) but nevertheless it doesn't count.
I'll make some other tests and see if I can figure out the problem; in the meanwhile, I'll paste here the init code:
void MX_TIM2_Init(void)
{
TIM_Encoder_InitTypeDef sConfig;
TIM_MasterConfigTypeDef sMasterConfig;
htim2.Instance = TIM2;
htim2.Init.Prescaler = 0;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 0;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
sConfig.EncoderMode = TIM_ENCODERMODE_TI12;
sConfig.IC1Polarity = TIM_ICPOLARITY_RISING;
sConfig.IC1Selection = TIM_ICSELECTION_DIRECTTI;
sConfig.IC1Prescaler = TIM_ICPSC_DIV1;
sConfig.IC1Filter = 0;
sConfig.IC2Polarity = TIM_ICPOLARITY_RISING;
sConfig.IC2Selection = TIM_ICSELECTION_DIRECTTI;
sConfig.IC2Prescaler = TIM_ICPSC_DIV1;
sConfig.IC2Filter = 0;
HAL_TIM_Encoder_Init(&htim2, &sConfig);
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig);
}
void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef* htim_encoder)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(htim_encoder->Instance==TIM1)
{
[...]
}
else if(htim_encoder->Instance==TIM2)
{
/* USER CODE BEGIN TIM2_MspInit 0 */
/* USER CODE END TIM2_MspInit 0 */
/* Peripheral clock enable */
__TIM2_CLK_ENABLE();
/**TIM2 GPIO Configuration
PA1 ------> TIM2_CH2
PA5 ------> TIM2_CH1
*/
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
[...]
}
And in main function:
int main(void)
{
/* USER CODE BEGIN 1 */
extern USBD_HandleTypeDef hUsbDeviceFS;
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_TIM2_Init();
USB_reset();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
char outbuf[40]; //buffer for output communication
int count2 = 0;
/* USER CODE END 2 */
/* USER CODE BEGIN 3 */
while(UserButton_GetState() != 1); //wait until the button is pressed
sprintf(outbuf, ''test message\n'');
VCP_PutStr(outbuf);
/* Infinite loop */
while (1)
{
count2 = COUNT2; //COUNT 2 has been defined as TIM2->CNT
sprintf(outbuf, ''\nEncoder 2: %d'', count2);
VCP_PutStr(outbuf);
HAL_GPIO_TogglePin (GPIOE, GPIO_PIN_9);
HAL_Delay(250);
}
/* USER CODE END 3 */
}
