Tuk ZeroFour / Encoder_Nucleo_16_bits

Brandon Modon Encoder_Nucleo_16_bits

EncoderMspInitL0.cpp@0:ebd170807e11, 2016-05-22 (annotated)

Committer:
kkoichy
Date:
Sun May 22 19:59:18 2016 +0000
Revision:
0:ebd170807e11
V1.0 :; - Objet Encoder_Nucleo_16_bits created, allowing 32bits encoder counting operation, based on a software 32bits counter, using a 16bits TIM with interrupt.; Based on the work of David Lowe

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kkoichy 0:ebd170807e11 1 #include "mbed.h"
kkoichy 0:ebd170807e11 2 /*
kkoichy 0:ebd170807e11 3 * HAL_TIM_Encoder_MspInit()
kkoichy 0:ebd170807e11 4 * Overrides the __weak function stub in stm32f4xx_hal_tim.h
kkoichy 0:ebd170807e11 5 *
kkoichy 0:ebd170807e11 6 * Edit the below for your preferred pin wiring & pullup/down
kkoichy 0:ebd170807e11 7 * I have encoder common at 3V3, using GPIO_PULLDOWN on inputs.
kkoichy 0:ebd170807e11 8 * Encoder A&B outputs connected directly to GPIOs.
kkoichy 0:ebd170807e11 9 *
kkoichy 0:ebd170807e11 10 */
kkoichy 0:ebd170807e11 11
kkoichy 0:ebd170807e11 12 #ifdef TARGET_STM32L0
kkoichy 0:ebd170807e11 13 void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef *htim)
kkoichy 0:ebd170807e11 14 {
kkoichy 0:ebd170807e11 15 GPIO_InitTypeDef GPIO_InitStruct;
kkoichy 0:ebd170807e11 16
kkoichy 0:ebd170807e11 17 if (htim->Instance == TIM2) { //PA0 PA1 = Nucleo A0 A1
kkoichy 0:ebd170807e11 18 __TIM2_CLK_ENABLE();
kkoichy 0:ebd170807e11 19 __GPIOA_CLK_ENABLE();
kkoichy 0:ebd170807e11 20 GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
kkoichy 0:ebd170807e11 21 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
kkoichy 0:ebd170807e11 22 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
kkoichy 0:ebd170807e11 23 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
kkoichy 0:ebd170807e11 24 GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
kkoichy 0:ebd170807e11 25 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
kkoichy 0:ebd170807e11 26 }
kkoichy 0:ebd170807e11 27 }
kkoichy 0:ebd170807e11 28 #endif