circuitpython/ports/stm32f4/supervisor/port.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Scott Shawcroft 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.
 */

#include <stdint.h>
#include "supervisor/port.h"
#include "boards/board.h"

#include "tick.h"
//#include "shared-bindings/rtc/__init__.h"

#include "stm32f4xx_hal.h"
#define DATA_Ready_Pin GPIO_PIN_2
#define DATA_Ready_GPIO_Port GPIOE
#define CS_I2C_SPI_Pin GPIO_PIN_3
#define CS_I2C_SPI_GPIO_Port GPIOE
#define INT1_Pin GPIO_PIN_4
#define INT1_GPIO_Port GPIOE
#define INT2_Pin GPIO_PIN_5
#define INT2_GPIO_Port GPIOE
#define PC14_OSC32_IN_Pin GPIO_PIN_14
#define PC14_OSC32_IN_GPIO_Port GPIOC
#define PC15_OSC32_OUT_Pin GPIO_PIN_15
#define PC15_OSC32_OUT_GPIO_Port GPIOC
#define PH0_OSC_IN_Pin GPIO_PIN_0
#define PH0_OSC_IN_GPIO_Port GPIOH
#define PH1_OSC_OUT_Pin GPIO_PIN_1
#define PH1_OSC_OUT_GPIO_Port GPIOH
#define OTG_FS_PowerSwitchOn_Pin GPIO_PIN_0
#define OTG_FS_PowerSwitchOn_GPIO_Port GPIOC
#define PDM_OUT_Pin GPIO_PIN_3
#define PDM_OUT_GPIO_Port GPIOC
#define I2S3_WS_Pin GPIO_PIN_4
#define I2S3_WS_GPIO_Port GPIOA
#define SPI1_SCK_Pin GPIO_PIN_5
#define SPI1_SCK_GPIO_Port GPIOA
#define SPI1_MISO_Pin GPIO_PIN_6
#define SPI1_MISO_GPIO_Port GPIOA
#define SPI1_MOSI_Pin GPIO_PIN_7
#define SPI1_MOSI_GPIO_Port GPIOA
#define CLK_IN_Pin GPIO_PIN_10
#define CLK_IN_GPIO_Port GPIOB
#define LD4_Pin GPIO_PIN_12
#define LD4_GPIO_Port GPIOD
#define LD3_Pin GPIO_PIN_13
#define LD3_GPIO_Port GPIOD
#define LD5_Pin GPIO_PIN_14
#define LD5_GPIO_Port GPIOD
#define LD6_Pin GPIO_PIN_15
#define LD6_GPIO_Port GPIOD
#define I2S3_MCK_Pin GPIO_PIN_7
#define I2S3_MCK_GPIO_Port GPIOC
#define VBUS_FS_Pin GPIO_PIN_9
#define VBUS_FS_GPIO_Port GPIOA
#define OTG_FS_ID_Pin GPIO_PIN_10
#define OTG_FS_ID_GPIO_Port GPIOA
#define OTG_FS_DM_Pin GPIO_PIN_11
#define OTG_FS_DM_GPIO_Port GPIOA
#define OTG_FS_DP_Pin GPIO_PIN_12
#define OTG_FS_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 I2S3_SCK_Pin GPIO_PIN_10
#define I2S3_SCK_GPIO_Port GPIOC
#define I2S3_SD_Pin GPIO_PIN_12
#define I2S3_SD_GPIO_Port GPIOC
#define Audio_RST_Pin GPIO_PIN_4
#define Audio_RST_GPIO_Port GPIOD
#define OTG_FS_OverCurrent_Pin GPIO_PIN_5
#define OTG_FS_OverCurrent_GPIO_Port GPIOD
#define SWO_Pin GPIO_PIN_3
#define SWO_GPIO_Port GPIOB
#define Audio_SCL_Pin GPIO_PIN_6
#define Audio_SCL_GPIO_Port GPIOB
#define Audio_SDA_Pin GPIO_PIN_9
#define Audio_SDA_GPIO_Port GPIOB
#define MEMS_INT2_Pin GPIO_PIN_1
#define MEMS_INT2_GPIO_Port GPIOE

static void power_warning_handler(void) {
    reset_into_safe_mode(BROWNOUT);
}

safe_mode_t port_init(void) {
	HAL_Init();

	//sys clock
	RCC_OscInitTypeDef RCC_OscInitStruct = {0};
	RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
	RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
	/** Configure the main internal regulator output voltage 
	*/
	__HAL_RCC_PWR_CLK_ENABLE();
	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
	/** Initializes the CPU, AHB and APB busses clocks 
	*/
	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
	RCC_OscInitStruct.HSEState = RCC_HSE_ON;
	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
	RCC_OscInitStruct.PLL.PLLM = 4;
	RCC_OscInitStruct.PLL.PLLN = 192;
	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
	RCC_OscInitStruct.PLL.PLLQ = 8;
	HAL_RCC_OscConfig(&RCC_OscInitStruct);
	/** Initializes the CPU, AHB and APB busses clocks 
	*/
	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
	                      |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
	HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
	PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
	PeriphClkInitStruct.PLLI2S.PLLI2SN = 200;
	PeriphClkInitStruct.PLLI2S.PLLI2SM = 5;
	PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
	HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);

	//GPIO setup
	GPIO_InitTypeDef GPIO_InitStruct = {0};
	/* GPIO Ports Clock Enable */
	__HAL_RCC_GPIOE_CLK_ENABLE();
	__HAL_RCC_GPIOC_CLK_ENABLE();
	__HAL_RCC_GPIOH_CLK_ENABLE();
	__HAL_RCC_GPIOA_CLK_ENABLE();
	__HAL_RCC_GPIOB_CLK_ENABLE();
	__HAL_RCC_GPIOD_CLK_ENABLE();

	/*Configure GPIO pin Output Level */
	HAL_GPIO_WritePin(OTG_FS_PowerSwitchOn_GPIO_Port, OTG_FS_PowerSwitchOn_Pin, GPIO_PIN_SET);

	/*Configure GPIO pin Output Level */
	HAL_GPIO_WritePin(GPIOD, LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
	                      |Audio_RST_Pin, GPIO_PIN_RESET);

	/*Configure GPIO pin : DATA_Ready_Pin */
	GPIO_InitStruct.Pin = DATA_Ready_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	HAL_GPIO_Init(DATA_Ready_GPIO_Port, &GPIO_InitStruct);

	/*Configure GPIO pin : CS_I2C_SPI_Pin */
	GPIO_InitStruct.Pin = CS_I2C_SPI_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
	HAL_GPIO_Init(CS_I2C_SPI_GPIO_Port, &GPIO_InitStruct);

	/*Configure GPIO pins : INT1_Pin INT2_Pin MEMS_INT2_Pin */
	GPIO_InitStruct.Pin = INT1_Pin|INT2_Pin|MEMS_INT2_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

	/*Configure GPIO pin : OTG_FS_PowerSwitchOn_Pin */
	GPIO_InitStruct.Pin = OTG_FS_PowerSwitchOn_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
	HAL_GPIO_Init(OTG_FS_PowerSwitchOn_GPIO_Port, &GPIO_InitStruct);

	/*Configure GPIO pin : PA0 */
	GPIO_InitStruct.Pin = GPIO_PIN_0;
	GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

	/*Configure GPIO pins : LD4_Pin LD3_Pin LD5_Pin LD6_Pin 
	                       Audio_RST_Pin */
	GPIO_InitStruct.Pin = LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
	                      |Audio_RST_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
	HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

	/*Configure GPIO pin : OTG_FS_OverCurrent_Pin */
	GPIO_InitStruct.Pin = OTG_FS_OverCurrent_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
	GPIO_InitStruct.Pull = GPIO_NOPULL;
	HAL_GPIO_Init(OTG_FS_OverCurrent_GPIO_Port, &GPIO_InitStruct);

	//Status LED chain
	HAL_GPIO_WritePin(GPIOD, LD4_Pin, GPIO_PIN_RESET); //LED 1
	HAL_GPIO_WritePin(GPIOD, LD3_Pin, GPIO_PIN_SET); //LED 2
	HAL_GPIO_WritePin(GPIOD, LD5_Pin, GPIO_PIN_SET); //LED 3
	HAL_GPIO_WritePin(GPIOD, LD6_Pin, GPIO_PIN_SET); //LED 4

    tick_init();

    board_init(); 

    return NO_SAFE_MODE;
}

void reset_port(void) {

}

void reset_to_bootloader(void) {

}

void reset_cpu(void) {

}

extern uint32_t _ebss;
// Place the word to save just after our BSS section that gets blanked.
void port_set_saved_word(uint32_t value) {
    _ebss = value;
}

uint32_t port_get_saved_word(void) {
    return _ebss;
}

// void HardFault_Handler(void) {

// }