File content as of revision 5:a3349f37ef99:

#include "mbed.h"
/*
 * HAL_TIM_Encoder_MspInit()
 * Overrides the __weak function stub in stm32f4xx_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.
 *
 * www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00102166.pdf
 * www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00141306.pdf
 *
 * TIM1_CH1: AF1 @ PA_8, PE_9 
 * TIM1_CH2: AF1 @ PA_9, PE_11 
 *
 * TIM2_CH1: AF1 @ PA_0, PA_5, PA_15, PB_8*     *F446 only
 * TIM2_CH2: AF1 @ PA_1, PB_3, PB_9*            *F446 only
 *
 * TIM3_CH1: AF2 @ PA_6, PB_4, PC_6
 * TIM3_CH2: AF2 @ PA_7, PB_5, PC_7
 *
 * 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_STM32F7
void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef *htim)
{
    GPIO_InitTypeDef GPIO_InitStruct;

    if (htim->Instance == TIM1) { //PE_9 PE_11
        __TIM1_CLK_ENABLE();
        __GPIOE_CLK_ENABLE();
        GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_11;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Pull = GPIO_PULLDOWN;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
        HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    }
    else if (htim->Instance == TIM2) { //PA_0 PA_1
        __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_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
        HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    }
    else if (htim->Instance == TIM3) { //PB_4 PB_5
        __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_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF2_TIM3;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    }
    else if (htim->Instance == TIM4) { // PD_12 PD_13
        __TIM4_CLK_ENABLE();
        __GPIOD_CLK_ENABLE();
        GPIO_InitStruct.Pin = GPIO_PIN_12 | GPIO_PIN_13;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF2_TIM4;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    }
    
    else if (htim->Instance == TIM8) { // PC_6 PC_7
        __TIM8_CLK_ENABLE();
        __GPIOC_CLK_ENABLE();
        GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF3_TIM8;
        HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    }
    
    else if (htim->Instance == TIM9) { // PE_5 PE_6
        __TIM9_CLK_ENABLE();
        __GPIOE_CLK_ENABLE();
        GPIO_InitStruct.Pin = GPIO_PIN_5 | GPIO_PIN_6;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF3_TIM9;
        HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
    }
    
    else if (htim->Instance == TIM12) { // PB_14 PB_15
        __TIM12_CLK_ENABLE();
        __GPIOB_CLK_ENABLE();
        GPIO_InitStruct.Pin = GPIO_PIN_14 | GPIO_PIN_15;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
        GPIO_InitStruct.Alternate = GPIO_AF9_TIM12;
        HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
    }
    
}
#endif