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https://github.com/RIOT-OS/RIOT.git
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99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
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* Copyright (C) 2021 ML!PA Consulting GmbH
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_adafruit-itsybitsy-m4
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* @{
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*
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* @file
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* @brief Board specific implementations for the Adafruit ItsyBitsy M4
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*
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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* @}
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*/
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#include "board.h"
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#include "periph/gpio.h"
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#include "mtd_spi_nor.h"
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#include "timex.h"
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#ifdef MODULE_VFS_DEFAULT
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#include "vfs_default.h"
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#endif
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#ifdef MODULE_MTD
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/* GD25x16 */
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static const mtd_spi_nor_params_t _samd51_nor_params = {
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.opcode = &mtd_spi_nor_opcode_default,
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.wait_chip_erase = 15 * US_PER_SEC,
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.wait_32k_erase = 150 * US_PER_MS,
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.wait_64k_erase = 250 * US_PER_MS,
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.wait_sector_erase = 50 * US_PER_MS,
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.wait_chip_wake_up = 1 * US_PER_MS,
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.clk = MHZ(54),
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.flag = SPI_NOR_F_SECT_4K
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| SPI_NOR_F_SECT_32K
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| SPI_NOR_F_SECT_64K,
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.spi = SPI_DEV(1),
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.mode = SPI_MODE_0,
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.cs = SAM0_QSPI_PIN_CS,
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.wp = SAM0_QSPI_PIN_DATA_2,
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.hold = SAM0_QSPI_PIN_DATA_3,
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};
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static mtd_spi_nor_t samd51_nor_dev = {
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.base = {
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.driver = &mtd_spi_nor_driver,
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.page_size = 256,
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.pages_per_sector = 16,
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},
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.params = &_samd51_nor_params,
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};
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MTD_XFA_ADD(samd51_nor_dev, 0);
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#ifdef MODULE_VFS_DEFAULT
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VFS_AUTO_MOUNT(littlefs2, VFS_MTD(samd51_nor_dev), VFS_DEFAULT_NVM(0), 0);
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#endif
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#endif /* MODULE_MTD */
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static inline void _toggle(unsigned n)
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{
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n *= 2;
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while (--n) {
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/* This might break if the GPIO driver gets more optimized, but
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* with the current implementation the toggle is slow enough :) */
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gpio_toggle(APA102_PARAM_CLK_PIN);
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}
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}
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void board_init(void)
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{
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/* if the real driver is used, it will deal with the LED */
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if (IS_USED(MODULE_APA102)) {
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return;
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}
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/* bootloader leaves on an annoyingly bright LED - turn it off manually */
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gpio_init(APA102_PARAM_DATA_PIN, GPIO_OUT);
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gpio_init(APA102_PARAM_CLK_PIN, GPIO_OUT);
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/* start frame - 32 zero bits */
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gpio_clear(APA102_PARAM_DATA_PIN);
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_toggle(32);
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/* LED frame: 3 start bits (1), 5 alpha bits (0), 24 color bits (0) */
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gpio_set(APA102_PARAM_DATA_PIN);
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_toggle(3);
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gpio_clear(APA102_PARAM_DATA_PIN);
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_toggle(29); /* 5 alpha + 8 red + 8 green + 8 blue */
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/* end frame - 32 one bits */
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gpio_set(APA102_PARAM_DATA_PIN);
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_toggle(32);
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}
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