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https://github.com/licsber/micropython.git
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f497723802
If no block devices are defined by a board then storage support will be disabled. This means there is no filesystem provided by either the internal flash or external SPI flash. But the VFS system can still be enabled and filesystems provided on external devices like an SD card.
86 lines
3.3 KiB
C
86 lines
3.3 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) 2017-2018 Damien P. George
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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 "py/obj.h"
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#include "py/mperrno.h"
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#include "irq.h"
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#include "led.h"
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#include "storage.h"
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#if MICROPY_HW_ENABLE_STORAGE
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int32_t spi_bdev_ioctl(spi_bdev_t *bdev, uint32_t op, uint32_t arg) {
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switch (op) {
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case BDEV_IOCTL_INIT:
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bdev->spiflash.config = (const mp_spiflash_config_t*)arg;
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mp_spiflash_init(&bdev->spiflash);
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bdev->flash_tick_counter_last_write = 0;
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return 0;
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case BDEV_IOCTL_IRQ_HANDLER:
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if ((bdev->spiflash.flags & 1) && HAL_GetTick() - bdev->flash_tick_counter_last_write >= 1000) {
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mp_spiflash_flush(&bdev->spiflash);
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led_state(PYB_LED_RED, 0); // indicate a clean cache with LED off
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}
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return 0;
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case BDEV_IOCTL_SYNC:
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if (bdev->spiflash.flags & 1) {
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// we must disable USB irqs to prevent MSC contention with SPI flash
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uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
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mp_spiflash_flush(&bdev->spiflash);
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led_state(PYB_LED_RED, 0); // indicate a clean cache with LED off
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restore_irq_pri(basepri);
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}
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return 0;
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}
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return -MP_EINVAL;
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}
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int spi_bdev_readblocks(spi_bdev_t *bdev, uint8_t *dest, uint32_t block_num, uint32_t num_blocks) {
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// we must disable USB irqs to prevent MSC contention with SPI flash
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uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
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mp_spiflash_read(&bdev->spiflash, block_num * FLASH_BLOCK_SIZE, num_blocks * FLASH_BLOCK_SIZE, dest);
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restore_irq_pri(basepri);
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return 0;
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}
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int spi_bdev_writeblocks(spi_bdev_t *bdev, const uint8_t *src, uint32_t block_num, uint32_t num_blocks) {
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// we must disable USB irqs to prevent MSC contention with SPI flash
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uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
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int ret = mp_spiflash_write(&bdev->spiflash, block_num * FLASH_BLOCK_SIZE, num_blocks * FLASH_BLOCK_SIZE, src);
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if (bdev->spiflash.flags & 1) {
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led_state(PYB_LED_RED, 1); // indicate a dirty cache with LED on
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bdev->flash_tick_counter_last_write = HAL_GetTick();
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}
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restore_irq_pri(basepri);
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return ret;
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}
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#endif
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