circuitpython/ports/atmel-samd/boards/sparkfun_samd51_micromod/board.c

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/*
* 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 "common-hal/microcontroller/Pin.h"
#include "hal/include/hal_gpio.h"
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#include "supervisor/shared/external_flash/external_flash.h"
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void external_flash_setup(void) {
// Do not reset the external flash write-protect and hold pins high
never_reset_pin_number(PIN_PB22);
never_reset_pin_number(PIN_PB23);
// note: using output instead of input+pullups because the pullups are a little weak
// Set the WP pin high
gpio_set_pin_function(PIN_PB22, GPIO_PIN_FUNCTION_OFF);
gpio_set_pin_direction(PIN_PB22, GPIO_DIRECTION_OUT);
gpio_set_pin_level(PIN_PB22, true);
// Set the HOLD pin high
gpio_set_pin_function(PIN_PB23, GPIO_PIN_FUNCTION_OFF);
gpio_set_pin_direction(PIN_PB23, GPIO_DIRECTION_OUT);
gpio_set_pin_level(PIN_PB23, true);
}
// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.