/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2017-2018 Damien P. George * * 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 "py/obj.h" #include "py/mperrno.h" #include "irq.h" #include "led.h" #include "storage.h" #if MICROPY_HW_ENABLE_STORAGE int32_t spi_bdev_ioctl(spi_bdev_t *bdev, uint32_t op, uint32_t arg) { switch (op) { case BDEV_IOCTL_INIT: bdev->spiflash.config = (const mp_spiflash_config_t*)arg; mp_spiflash_init(&bdev->spiflash); bdev->flash_tick_counter_last_write = 0; return 0; case BDEV_IOCTL_IRQ_HANDLER: if ((bdev->spiflash.flags & 1) && HAL_GetTick() - bdev->flash_tick_counter_last_write >= 1000) { mp_spiflash_cache_flush(&bdev->spiflash); led_state(PYB_LED_RED, 0); // indicate a clean cache with LED off } return 0; case BDEV_IOCTL_SYNC: if (bdev->spiflash.flags & 1) { // we must disable USB irqs to prevent MSC contention with SPI flash uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS); mp_spiflash_cache_flush(&bdev->spiflash); led_state(PYB_LED_RED, 0); // indicate a clean cache with LED off restore_irq_pri(basepri); } return 0; } return -MP_EINVAL; } int spi_bdev_readblocks(spi_bdev_t *bdev, uint8_t *dest, uint32_t block_num, uint32_t num_blocks) { // we must disable USB irqs to prevent MSC contention with SPI flash uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS); mp_spiflash_cached_read(&bdev->spiflash, block_num * FLASH_BLOCK_SIZE, num_blocks * FLASH_BLOCK_SIZE, dest); restore_irq_pri(basepri); return 0; } int spi_bdev_writeblocks(spi_bdev_t *bdev, const uint8_t *src, uint32_t block_num, uint32_t num_blocks) { // we must disable USB irqs to prevent MSC contention with SPI flash uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS); int ret = mp_spiflash_cached_write(&bdev->spiflash, block_num * FLASH_BLOCK_SIZE, num_blocks * FLASH_BLOCK_SIZE, src); if (bdev->spiflash.flags & 1) { led_state(PYB_LED_RED, 1); // indicate a dirty cache with LED on bdev->flash_tick_counter_last_write = HAL_GetTick(); } restore_irq_pri(basepri); return ret; } #endif