Tk A
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locate_by_hello_enc
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Encoder/EncoderMspInitL1.cpp
- Committer:
- sakanakuuun
- Date:
- 2016-09-01
- Revision:
- 0:f12d257b587e
File content as of revision 0:f12d257b587e:
#include "mbed.h" /* * HAL_TIM_Encoder_MspInit() * Overrides the __weak function stub in stm32l4xx_hal_tim.h * * Edit the below for your preferred pin wiring & pullup/down * I have encoder common at 3V3, using GPIO_PULLDOWN on inputs. * Encoder A&B outputs connected directly to GPIOs. * * http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00098321.pdf * Table 9 has GPIO alternate function pinout mappings. * * TIM2_CH1: AF1 @ PA_0, PA_5, PA_15, PE_9 * TIM2_CH2: AF1 @ PA_1, PB_3, PE_10 * * TIM3_CH1: AF2 @ PA_6, PB_4, PC_6, PE_3 * TIM3_CH2: AF2 @ PA_7, PB_5, PC_7, PE_4 * * TIM4_CH1: AF2 @ PB_6, PD_12 * TIM4_CH2: AF2 @ PB_7, PD_13 * * TIM5_CH1: AF2 @ PA_0* *TIM5 used by mbed system ticker so unavailable * TIM5_CH2: AF2 @ PA_1* * */ #ifdef TARGET_STM32L1 void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef *htim) { GPIO_InitTypeDef GPIO_InitStruct; if (htim->Instance == TIM2) { //PA0 PA1 = Nucleo A0 A1 __TIM2_CLK_ENABLE(); __GPIOA_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; GPIO_InitStruct.Alternate = GPIO_AF1_TIM2; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); } else if (htim->Instance == TIM3) { //PB4 PB5 = Nucleo D5 D4 __TIM3_CLK_ENABLE(); __GPIOB_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; GPIO_InitStruct.Alternate = GPIO_AF2_TIM3; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); } else if (htim->Instance == TIM4) { // PB6 PB7 = Nucleo D10 MORPHO_PB7 __TIM4_CLK_ENABLE(); __GPIOB_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; GPIO_InitStruct.Alternate = GPIO_AF2_TIM4; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); } } #endif