51 lines
2.1 KiB
C
51 lines
2.1 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 "common-hal/microcontroller/Pin.h"
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#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) {
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// Do not reset the external flash write-protect and hold pins high
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never_reset_pin_number(PIN_PB22);
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never_reset_pin_number(PIN_PB23);
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// note: using output instead of input+pullups because the pullups are a little weak
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// Set the WP pin high
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gpio_set_pin_function(PIN_PB22, GPIO_PIN_FUNCTION_OFF);
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gpio_set_pin_direction(PIN_PB22, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(PIN_PB22, true);
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// Set the HOLD pin high
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gpio_set_pin_function(PIN_PB23, GPIO_PIN_FUNCTION_OFF);
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gpio_set_pin_direction(PIN_PB23, GPIO_DIRECTION_OUT);
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gpio_set_pin_level(PIN_PB23, true);
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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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