Dimitar Marinov / Mbed 2 deprecated Nucleo_4_encoders_w_Nokia5110

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Dependencies:   N5110 mbed

Encoder/EncoderMspInitL4.cpp@10:65e7ceb96b39, 2016-10-24 (annotated)

Committer:
triochi
Date:
Mon Oct 24 17:21:58 2016 +0000
Revision:
10:65e7ceb96b39
Parent:
7:62c2c1382d86 
finally working 4 encoders

Who changed what in which revision?

UserRevisionLine numberNew contents of line
triochi 7:62c2c1382d86 1 #include "mbed.h"
triochi 7:62c2c1382d86 2 /*
triochi 7:62c2c1382d86 3 * HAL_TIM_Encoder_MspInit()
triochi 7:62c2c1382d86 4 * Overrides the __weak function stub in stm32f4xx_hal_tim.h
triochi 7:62c2c1382d86 5 *
triochi 7:62c2c1382d86 6 * Edit the below for your preferred pin wiring & pullup/down
triochi 7:62c2c1382d86 7 * I have encoder common at 3V3, using GPIO_PULLDOWN on inputs.
triochi 7:62c2c1382d86 8 * Encoder A&B outputs connected directly to GPIOs.
triochi 7:62c2c1382d86 9 *
triochi 7:62c2c1382d86 10 * http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00108832.pdf
triochi 7:62c2c1382d86 11 * Table 15 has GPIOx AFx pinouts
triochi 7:62c2c1382d86 12 *
triochi 7:62c2c1382d86 13 * TIM1_CH1: AF1 @ PA8, PE9
triochi 7:62c2c1382d86 14 * TIM1_CH2: AF1 @ PA9, PE11
triochi 7:62c2c1382d86 15 *
triochi 7:62c2c1382d86 16 * TIM2_CH1: AF1 @ PA0, PA5, PA15
triochi 7:62c2c1382d86 17 * TIM2_CH2: AF1 @ PA1, PB3
triochi 7:62c2c1382d86 18 *
triochi 7:62c2c1382d86 19 * TIM3_CH1: AF2 @ PA6, PB4, PC6, PE3
triochi 7:62c2c1382d86 20 * TIM3_CH2: AF2 @ PA7, PB5, PC7, PE4
triochi 7:62c2c1382d86 21 *
triochi 7:62c2c1382d86 22 * TIM4_CH1: AF2 @ PB6, PD12
triochi 7:62c2c1382d86 23 * TIM4_CH2: AF2 @ PB7, PD13
triochi 7:62c2c1382d86 24 *
triochi 7:62c2c1382d86 25 * TIM5_CH1: AF2 @ PA0, PF6
triochi 7:62c2c1382d86 26 * TIM5_CH2: AF2 @ PA1, PF7
triochi 7:62c2c1382d86 27 *
triochi 7:62c2c1382d86 28 */
triochi 7:62c2c1382d86 29
triochi 7:62c2c1382d86 30 #ifdef TARGET_STM32L4
triochi 7:62c2c1382d86 31 void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef *htim)
triochi 7:62c2c1382d86 32 {
triochi 7:62c2c1382d86 33 GPIO_InitTypeDef GPIO_InitStruct;
triochi 7:62c2c1382d86 34
triochi 7:62c2c1382d86 35 if (htim->Instance == TIM1) { //PA8 PA9 = Nucleo D7 D8
triochi 7:62c2c1382d86 36 __TIM1_CLK_ENABLE();
triochi 7:62c2c1382d86 37 __GPIOA_CLK_ENABLE();
triochi 7:62c2c1382d86 38 GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_9;
triochi 7:62c2c1382d86 39 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
triochi 7:62c2c1382d86 40 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
triochi 7:62c2c1382d86 41 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
triochi 7:62c2c1382d86 42 GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
triochi 7:62c2c1382d86 43 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
triochi 7:62c2c1382d86 44 }
triochi 7:62c2c1382d86 45 else if (htim->Instance == TIM2) { //PA0 PA1 = Nucleo A0 A1
triochi 7:62c2c1382d86 46 __TIM2_CLK_ENABLE();
triochi 7:62c2c1382d86 47 __GPIOA_CLK_ENABLE();
triochi 7:62c2c1382d86 48 GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
triochi 7:62c2c1382d86 49 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
triochi 7:62c2c1382d86 50 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
triochi 7:62c2c1382d86 51 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
triochi 7:62c2c1382d86 52 GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
triochi 7:62c2c1382d86 53 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
triochi 7:62c2c1382d86 54 }
triochi 7:62c2c1382d86 55 else if (htim->Instance == TIM3) { //PB4 PB5 = Nucleo D5 D4
triochi 7:62c2c1382d86 56 __TIM3_CLK_ENABLE();
triochi 7:62c2c1382d86 57 __GPIOB_CLK_ENABLE();
triochi 7:62c2c1382d86 58 GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5;
triochi 7:62c2c1382d86 59 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
triochi 7:62c2c1382d86 60 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
triochi 7:62c2c1382d86 61 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
triochi 7:62c2c1382d86 62 GPIO_InitStruct.Alternate = GPIO_AF2_TIM3;
triochi 7:62c2c1382d86 63 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
triochi 7:62c2c1382d86 64 }
triochi 7:62c2c1382d86 65 else if (htim->Instance == TIM4) { // PB6 PB7 = Nucleo D10 MORPHO_PB7
triochi 7:62c2c1382d86 66 __TIM4_CLK_ENABLE();
triochi 7:62c2c1382d86 67 __GPIOB_CLK_ENABLE();
triochi 7:62c2c1382d86 68 GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;
triochi 7:62c2c1382d86 69 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
triochi 7:62c2c1382d86 70 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
triochi 7:62c2c1382d86 71 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
triochi 7:62c2c1382d86 72 GPIO_InitStruct.Alternate = GPIO_AF2_TIM4;
triochi 7:62c2c1382d86 73 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
triochi 7:62c2c1382d86 74 }
triochi 7:62c2c1382d86 75 else if (htim->Instance == TIM5) { // here for completeness, mbed sytem timer uses this
triochi 7:62c2c1382d86 76 __TIM5_CLK_ENABLE();
triochi 7:62c2c1382d86 77 __GPIOA_CLK_ENABLE();
triochi 7:62c2c1382d86 78 GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
triochi 7:62c2c1382d86 79 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
triochi 7:62c2c1382d86 80 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
triochi 7:62c2c1382d86 81 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
triochi 7:62c2c1382d86 82 GPIO_InitStruct.Alternate = GPIO_AF2_TIM5;
triochi 7:62c2c1382d86 83 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
triochi 7:62c2c1382d86 84 }
triochi 7:62c2c1382d86 85 }
triochi 7:62c2c1382d86 86 #endif