It is based on https://developer.mbed.org/users/gregeric/code/Nucleo_Hello_Encoder/
rotary_encoder_base/rotary_encoder_base.cpp
- Committer:
- inst
- Date:
- 2016-04-03
- Revision:
- 4:d07f58c46a79
- Parent:
- 3:65021ea3fae5
- Child:
- 5:fae9a340d212
File content as of revision 4:d07f58c46a79:
#include "rotary_encoder_base.hpp" #include "rotary_encoder.hpp" #include "mbed.h" namespace mbed_stl { rotary_encoder_base::rotary_encoder_base(TIM_TypeDef* timer_type, uint32_t encoder_mode, size_t resolution) : rotary_encoder(resolution) { // todo:delete debug encoder_mode = TIM_ENCODERMODE_TI12; resolution = 400; timer_handler_.Instance = timer_type; timer_handler_.Init.Period = max_counts_; timer_handler_.Init.CounterMode = TIM_COUNTERMODE_UP; timer_handler_.Init.Prescaler = 0; timer_handler_.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; TIM_Encoder_InitTypeDef encoder; encoder.EncoderMode = encoder_mode; 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; //////////////////////////////////////// //printf("t:%d, e:%d", &timer_handler_, &encoder); if (HAL_TIM_Encoder_Init(&timer_handler_, &encoder) != HAL_OK) { error("couldn't init encoder\n"); } //printf("%d end\n", cnt++); /////////////////////////////////////////// } rotary_encoder_base::~rotary_encoder_base() {} int32_t rotary_encoder_base::get_counts() const { int32_t counts = timer_handler_.Instance->CNT; if (counts > (max_counts_ >> 1)) { return counts - max_counts_; } return counts; } void rotary_encoder_base::reset() { timer_handler_.Instance->CNT = 0; } void rotary_encoder_base::start() { if(HAL_TIM_Encoder_Start(&timer_handler_, TIM_CHANNEL_1) != HAL_OK) { error("couldn't start encoder\r\n"); } } void rotary_encoder_base::stop() { if(HAL_TIM_Encoder_Stop(&timer_handler_, TIM_CHANNEL_1) != HAL_OK) { error("couldn't start encoder\r\n"); } } } /* namespace mbed_stl */