Dimitar Marinov / Mbed 2 deprecated Nucleo_4_encoders_w_Nokia5110

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Dependencies:   N5110 mbed

Encoder/EncoderMspInitF0.cpp@7:62c2c1382d86, 2016-10-23 (annotated)

Committer:
triochi
Date:
Sun Oct 23 15:48:58 2016 +0000
Revision:
7:62c2c1382d86
Changed encoder library;

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 stm32f0xx_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/DM00088500.pdf
triochi 7:62c2c1382d86 11 * Table 11 has GPIO alternate function pinout mappings.
triochi 7:62c2c1382d86 12 *
triochi 7:62c2c1382d86 13 * TIM1_CH1: AF2 @ PA_8 - TIM1 used as system ticker under mbed, so unavailable
triochi 7:62c2c1382d86 14 * TIM1_CH2: AF2 @ PA_9
triochi 7:62c2c1382d86 15 *
triochi 7:62c2c1382d86 16 * TIM3_CH1: AF1 @ PA_6, PB_4; AF0 @ PC_6* *only for F030xC devices
triochi 7:62c2c1382d86 17 * TIM3_CH2: AF1 @ PA_7, PB_5; AF0 @ PC_7*
triochi 7:62c2c1382d86 18 *
triochi 7:62c2c1382d86 19 */
triochi 7:62c2c1382d86 20
triochi 7:62c2c1382d86 21 #ifdef TARGET_STM32F0
triochi 7:62c2c1382d86 22 void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef *htim)
triochi 7:62c2c1382d86 23 {
triochi 7:62c2c1382d86 24 GPIO_InitTypeDef GPIO_InitStruct;
triochi 7:62c2c1382d86 25
triochi 7:62c2c1382d86 26 if (htim->Instance == TIM3) { //PB_4 PB_5 = Nucleo D5 D4
triochi 7:62c2c1382d86 27 __TIM3_CLK_ENABLE();
triochi 7:62c2c1382d86 28 __GPIOB_CLK_ENABLE();
triochi 7:62c2c1382d86 29 GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5;
triochi 7:62c2c1382d86 30 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
triochi 7:62c2c1382d86 31 GPIO_InitStruct.Pull = GPIO_PULLDOWN;
triochi 7:62c2c1382d86 32 GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
triochi 7:62c2c1382d86 33 GPIO_InitStruct.Alternate = GPIO_AF1_TIM3;
triochi 7:62c2c1382d86 34 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
triochi 7:62c2c1382d86 35 }
triochi 7:62c2c1382d86 36 }
triochi 7:62c2c1382d86 37 #endif