A program to monitor some parameters for a motor
Dependencies: mbed-dev BufferSerial
Thanks to David Lowe for https://developer.mbed.org/users/gregeric/code/Nucleo_Hello_Encoder/ which I adapted for the use of TIM2 32bit timer as an encoder reader on the Nucleo L432KC board.
Encoder/EncoderMspInitF0.cpp
- Committer:
- tonnyleonard
- Date:
- 2017-03-08
- Revision:
- 0:789510d98ade
File content as of revision 0:789510d98ade:
#include "mbed.h" /* * HAL_TIM_Encoder_MspInit() * Overrides the __weak function stub in stm32f0xx_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/DM00088500.pdf * Table 11 has GPIO alternate function pinout mappings. * * TIM1_CH1: AF2 @ PA_8 - TIM1 used as system ticker under mbed, so unavailable * TIM1_CH2: AF2 @ PA_9 * * TIM3_CH1: AF1 @ PA_6, PB_4; AF0 @ PC_6* *only for F030xC devices * TIM3_CH2: AF1 @ PA_7, PB_5; AF0 @ PC_7* * */ #ifdef TARGET_STM32F0 void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef *htim) { GPIO_InitTypeDef GPIO_InitStruct; if (htim->Instance == TIM3) { //PB_4 PB_5 = 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_AF1_TIM3; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); } } #endif