text: /*
   * This file is part of the Micro Python project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  /* GPIO PIN REFERENCE
  #define LED3_Pin GPIO_PIN_2
  #define LED3_GPIO_Port GPIOE
  #define LED4_Pin GPIO_PIN_3
  #define LED4_GPIO_Port GPIOE
  #define DFSDM_DATIN3_Pin GPIO_PIN_4
  #define DFSDM_DATIN3_GPIO_Port GPIOE
  #define A0_Pin GPIO_PIN_0
  #define A0_GPIO_Port GPIOF
  #define LCD_BLCTRL_Pin GPIO_PIN_5
  #define LCD_BLCTRL_GPIO_Port GPIOF
  #define QSPI_BK1_IO3_Pin GPIO_PIN_6
  #define QSPI_BK1_IO3_GPIO_Port GPIOF
  #define QSPI_BK1_IO2_Pin GPIO_PIN_7
  #define QSPI_BK1_IO2_GPIO_Port GPIOF
  #define QSPI_BK1_IO0_Pin GPIO_PIN_8
  #define QSPI_BK1_IO0_GPIO_Port GPIOF
  #define QSPI_BK1_IO1_Pin GPIO_PIN_9
  #define QSPI_BK1_IO1_GPIO_Port GPIOF
  #define STLK_MCO_Pin GPIO_PIN_0
  #define STLK_MCO_GPIO_Port GPIOH
  #define DFSDM_CKOUT_Pin GPIO_PIN_2
  #define DFSDM_CKOUT_GPIO_Port GPIOC
  #define JOY_SEL_Pin GPIO_PIN_0
  #define JOY_SEL_GPIO_Port GPIOA
  #define STLINK_RX_Pin GPIO_PIN_2
  #define STLINK_RX_GPIO_Port GPIOA
  #define STLINK_TX_Pin GPIO_PIN_3
  #define STLINK_TX_GPIO_Port GPIOA
  #define CODEC_I2S3_WS_Pin GPIO_PIN_4
  #define CODEC_I2S3_WS_GPIO_Port GPIOA
  #define DFSDM_DATIN0_Pin GPIO_PIN_1
  #define DFSDM_DATIN0_GPIO_Port GPIOB
  #define QSPI_CLK_Pin GPIO_PIN_2
  #define QSPI_CLK_GPIO_Port GPIOB
  #define EXT_RESET_Pin GPIO_PIN_11
  #define EXT_RESET_GPIO_Port GPIOF
  #define CTP_RST_Pin GPIO_PIN_12
  #define CTP_RST_GPIO_Port GPIOF
  #define JOY_RIGHT_Pin GPIO_PIN_14
  #define JOY_RIGHT_GPIO_Port GPIOF
  #define JOY_LEFT_Pin GPIO_PIN_15
  #define JOY_LEFT_GPIO_Port GPIOF
  #define JOY_UP_Pin GPIO_PIN_0
  #define JOY_UP_GPIO_Port GPIOG
  #define JOY_DOWN_Pin GPIO_PIN_1
  #define JOY_DOWN_GPIO_Port GPIOG
  #define D4_Pin GPIO_PIN_7
  #define D4_GPIO_Port GPIOE
  #define D5_Pin GPIO_PIN_8
  #define D5_GPIO_Port GPIOE
  #define D6_Pin GPIO_PIN_9
  #define D6_GPIO_Port GPIOE
  #define D7_Pin GPIO_PIN_10
  #define D7_GPIO_Port GPIOE
  #define D8_Pin GPIO_PIN_11
  #define D8_GPIO_Port GPIOE
  #define D9_Pin GPIO_PIN_12
  #define D9_GPIO_Port GPIOE
  #define D10_Pin GPIO_PIN_13
  #define D10_GPIO_Port GPIOE
  #define D11_Pin GPIO_PIN_14
  #define D11_GPIO_Port GPIOE
  #define D12_Pin GPIO_PIN_15
  #define D12_GPIO_Port GPIOE
  #define I2C2_SCL_Pin GPIO_PIN_10
  #define I2C2_SCL_GPIO_Port GPIOB
  #define M2_CKIN_Pin GPIO_PIN_11
  #define M2_CKIN_GPIO_Port GPIOB
  #define CODEC_I2S3_SCK_Pin GPIO_PIN_12
  #define CODEC_I2S3_SCK_GPIO_Port GPIOB
  #define D13_Pin GPIO_PIN_8
  #define D13_GPIO_Port GPIOD
  #define D14_Pin GPIO_PIN_9
  #define D14_GPIO_Port GPIOD
  #define D15_Pin GPIO_PIN_10
  #define D15_GPIO_Port GPIOD
  #define LCD_RESET_Pin GPIO_PIN_11
  #define LCD_RESET_GPIO_Port GPIOD
  #define D0_Pin GPIO_PIN_14
  #define D0_GPIO_Port GPIOD
  #define D1_Pin GPIO_PIN_15
  #define D1_GPIO_Port GPIOD
  #define CODEC_INT_Pin GPIO_PIN_2
  #define CODEC_INT_GPIO_Port GPIOG
  #define LCD_TE_Pin GPIO_PIN_4
  #define LCD_TE_GPIO_Port GPIOG
  #define CTP_INT_Pin GPIO_PIN_5
  #define CTP_INT_GPIO_Port GPIOG
  #define QSPI_BK1_NCS_Pin GPIO_PIN_6
  #define QSPI_BK1_NCS_GPIO_Port GPIOG
  #define USB_OTGFS_OVRCR_Pin GPIO_PIN_7
  #define USB_OTGFS_OVRCR_GPIO_Port GPIOG
  #define USB_OTGFS_PPWR_EN_Pin GPIO_PIN_8
  #define USB_OTGFS_PPWR_EN_GPIO_Port GPIOG
  #define CODEC_I2S3_MCK_Pin GPIO_PIN_7
  #define CODEC_I2S3_MCK_GPIO_Port GPIOC
  #define uSD_D0_Pin GPIO_PIN_8
  #define uSD_D0_GPIO_Port GPIOC
  #define uSD_D1_Pin GPIO_PIN_9
  #define uSD_D1_GPIO_Port GPIOC
  #define M2_CKINA8_Pin GPIO_PIN_8
  #define M2_CKINA8_GPIO_Port GPIOA
  #define USB_OTGFS_VBUS_Pin GPIO_PIN_9
  #define USB_OTGFS_VBUS_GPIO_Port GPIOA
  #define USB_OTGFS_ID_Pin GPIO_PIN_10
  #define USB_OTGFS_ID_GPIO_Port GPIOA
  #define USB_OTGFS_DM_Pin GPIO_PIN_11
  #define USB_OTGFS_DM_GPIO_Port GPIOA
  #define USB_OTGFS_DP_Pin GPIO_PIN_12
  #define USB_OTGFS_DP_GPIO_Port GPIOA
  #define SWDIO_Pin GPIO_PIN_13
  #define SWDIO_GPIO_Port GPIOA
  #define SWCLK_Pin GPIO_PIN_14
  #define SWCLK_GPIO_Port GPIOA
  #define uSD_D2_Pin GPIO_PIN_10
  #define uSD_D2_GPIO_Port GPIOC
  #define uSD_D3_Pin GPIO_PIN_11
  #define uSD_D3_GPIO_Port GPIOC
  #define uSD_CLK_Pin GPIO_PIN_12
  #define uSD_CLK_GPIO_Port GPIOC
  #define D2_Pin GPIO_PIN_0
  #define D2_GPIO_Port GPIOD
  #define D3_Pin GPIO_PIN_1
  #define D3_GPIO_Port GPIOD
  #define uSD_CMD_Pin GPIO_PIN_2
  #define uSD_CMD_GPIO_Port GPIOD
  #define uSD_DETECT_Pin GPIO_PIN_3
  #define uSD_DETECT_GPIO_Port GPIOD
  #define FMC_NOE_Pin GPIO_PIN_4
  #define FMC_NOE_GPIO_Port GPIOD
  #define FMC_NWE_Pin GPIO_PIN_5
  #define FMC_NWE_GPIO_Port GPIOD
  #define FMC_NE1_Pin GPIO_PIN_7
  #define FMC_NE1_GPIO_Port GPIOD
  #define SWO_Pin GPIO_PIN_3
  #define SWO_GPIO_Port GPIOB
  #define CODEC_I2S3ext_SD_Pin GPIO_PIN_4
  #define CODEC_I2S3ext_SD_GPIO_Port GPIOB
  #define CODEC_I2S3_SD_Pin GPIO_PIN_5
  #define CODEC_I2S3_SD_GPIO_Port GPIOB
  #define I2C1_SCL_Pin GPIO_PIN_6
  #define I2C1_SCL_GPIO_Port GPIOB
  #define I2C1_SDA_Pin GPIO_PIN_7
  #define I2C1_SDA_GPIO_Port GPIOB
  #define I2C2_SDA_Pin GPIO_PIN_9
  #define I2C2_SDA_GPIO_Port GPIOB
  #define LED1_Pin GPIO_PIN_0
  #define LED1_GPIO_Port GPIOE
  #define LED2_Pin GPIO_PIN_1
  #define LED2_GPIO_Port GPIOE
  */
  
  #include "stm32f4xx_hal.h"
  #include "stm32f4/gpio.h"
  #include "common-hal/microcontroller/Pin.h"
  
  void stm32f4_peripherals_gpio_init(void) {
  	//Enable all GPIO for now
  	GPIO_InitTypeDef GPIO_InitStruct = {0};
  	__HAL_RCC_GPIOE_CLK_ENABLE();
  	__HAL_RCC_GPIOC_CLK_ENABLE();
  	__HAL_RCC_GPIOF_CLK_ENABLE();
  	__HAL_RCC_GPIOH_CLK_ENABLE();
  	__HAL_RCC_GPIOA_CLK_ENABLE();
  	__HAL_RCC_GPIOB_CLK_ENABLE();
  	__HAL_RCC_GPIOG_CLK_ENABLE();
  	__HAL_RCC_GPIOD_CLK_ENABLE();
  
  	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, GPIO_PIN_RESET);
  	//HAL_GPIO_WritePin(USB_OTGFS_PPWR_EN_GPIO_Port, USB_OTGFS_PPWR_EN_Pin, GPIO_PIN_SET);
  
  	//Configure LED pins
  	GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3;
  	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
  	GPIO_InitStruct.Pull = GPIO_NOPULL;
  	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
  
  	//Status LED chain
  	stm32f4_peripherals_status_led(0,1);
  	stm32f4_peripherals_status_led(1,0);
  	stm32f4_peripherals_status_led(2,0);
  	stm32f4_peripherals_status_led(3,0);
  
  	//Never reset pins
  	never_reset_pin_number(2,13); //PC13 anti tamp
      never_reset_pin_number(2,14); //PC14 OSC32_IN
      never_reset_pin_number(2,15); //PC15 OSC32_OUT
      never_reset_pin_number(0,13); //PA13 SWDIO
      never_reset_pin_number(0,14); //PA14 SWCLK
      //never_reset_pin_number(0,15); //PA15 JTDI
      //never_reset_pin_number(1,3); //PB3 JTDO
      //never_reset_pin_number(1,4); //PB4 JTRST
  
      // Port H is not included in GPIO port array
      // never_reset_pin_number(5,0); //PH0 JTDO   
      // never_reset_pin_number(5,1); //PH1 JTRST
  }
  
  //LEDs are inverted on F411 DISCO
  void stm32f4_peripherals_status_led(uint8_t led, uint8_t state) {
  	switch(led)
  	{
  		case 0: 	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_0, (state ^ 1));
  				break;
  		case 1: 	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_1, (state ^ 1));
  				break;
  		case 2: 	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, (state ^ 1));
  				break;
  		case 3: 	HAL_GPIO_WritePin(GPIOE, GPIO_PIN_3, (state ^ 1));
  				break;
  		default: break;
  	}
  }
  
  
  