96 lines
3.7 KiB
C
96 lines
3.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "supervisor/board.h"
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#include "mpconfigboard.h"
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#include "stm32l4xx.h"
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#include "stm32l4r5xx.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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#include "shared-bindings/digitalio/Direction.h"
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#include "shared-bindings/digitalio/DriveMode.h"
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#include "board.h"
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digitalio_digitalinout_obj_t power_pin = { .base.type = &digitalio_digitalinout_type };
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digitalio_digitalinout_obj_t discharge_pin = { .base.type = &digitalio_digitalinout_type };
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void initialize_discharge_pin(void) {
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/* Initialize the 3V3 discharge to be OFF and the output power to be ON */
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__HAL_RCC_GPIOE_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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common_hal_digitalio_digitalinout_construct(&power_pin, &pin_PE04);
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common_hal_digitalio_digitalinout_construct(&discharge_pin, &pin_PE06);
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common_hal_digitalio_digitalinout_never_reset(&power_pin);
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common_hal_digitalio_digitalinout_never_reset(&discharge_pin);
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GPIO_InitTypeDef GPIO_InitStruct;
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/* Set the DISCHARGE pin and the USB_DETECT pin to FLOAT */
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GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Pin = GPIO_PIN_6;
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HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); /* PE6 DISCHRG */
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* PC6 is USB_DETECT */
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/* Turn on the 3V3 regulator */
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
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GPIO_InitStruct.Pin = GPIO_PIN_4;
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HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
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HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_SET);
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}
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void board_init(void) {
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// enable the debugger while sleeping. Todo move somewhere more central (kind of generally useful in a debug build)
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SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
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// Set tick interrupt priority, default HAL value is intentionally invalid
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// Without this, USB does not function.
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HAL_InitTick((1UL << __NVIC_PRIO_BITS) - 1UL);
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__HAL_RCC_GPIOE_CLK_ENABLE();
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GPIO_InitTypeDef GPIO_InitStruct;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
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GPIO_InitStruct.Pin = GPIO_PIN_2;
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HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
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HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_SET);
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HAL_Delay(50);
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HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_RESET);
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}
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void reset_board(void) {
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initialize_discharge_pin();
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}
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// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
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