circuitpython/ports/stm/boards/swan_r5/board.c

85 lines
3.0 KiB
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 "supervisor/board.h"
#include "mpconfigboard.h"
#include "stm32l4xx.h"
#include "stm32l4r5xx.h"
void initialize_discharge_pin(void) {
/* Initialize the 3V3 discharge to be OFF and the output power to be ON */
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct;
/* Set the DISCHARGE pin and the USB_DETECT pin to FLOAT */
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Pin = GPIO_PIN_6;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); /* PE6 DISCHRG */
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* PC6 is USB_DETECT */
/* Turn on the 3V3 regulator */
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Pin = GPIO_PIN_4;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_SET);
}
void board_init(void) {
// enable the debugger while sleeping. Todo move somewhere more central (kind of generally useful in a debug build)
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
// Set tick interrupt priority, default HAL value is intentionally invalid
// Without this, USB does not function.
HAL_InitTick((1UL << __NVIC_PRIO_BITS) - 1UL);
initialize_discharge_pin();
__HAL_RCC_GPIOE_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Pin = GPIO_PIN_2;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_SET);
HAL_Delay(50);
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_RESET);
}
bool board_requests_safe_mode(void) {
return false;
}
void reset_board(void) {
}
void board_deinit(void) {
}