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82 lines
2.1 KiB
82 lines
2.1 KiB
#include "storage.h"
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#include <mutex>
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#include "diskio_impl.h"
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#include "diskio_sdmmc.h"
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#include "driver/gpio.h"
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#include "driver/sdspi_host.h"
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#include "esp_check.h"
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#include "esp_err.h"
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#include "esp_vfs_fat.h"
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#include "ff.h"
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#include "gpio-expander.h"
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#include "hal/gpio_types.h"
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#include "hal/spi_types.h"
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#include "sdmmc_cmd.h"
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namespace gay_ipod {
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static const char* TAG = "SDSTORAGE";
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SdStorage::SdStorage(GpioExpander *gpio) {
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this->gpio_ = gpio;
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}
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SdStorage::~SdStorage() {}
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SdStorage::Error SdStorage::Acquire(void) {
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// Acquiring the bus will also flush the mux switch change.
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gpio_->set_pin(GpioExpander::SD_MUX_SWITCH, GpioExpander::SD_MUX_ESP);
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auto lock = gpio_->AcquireSpiBus(GpioExpander::SD_CARD);
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// Now we can init the driver and set up the SD card into SPI mode.
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sdspi_host_init();
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sdspi_device_config_t config = {
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.host_id = VSPI_HOST,
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// CS handled manually bc it's on the GPIO expander
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.gpio_cs = GPIO_NUM_2,
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.gpio_cd = SDSPI_SLOT_NO_CD,
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.gpio_wp = SDSPI_SLOT_NO_WP,
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.gpio_int = GPIO_NUM_NC,
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};
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ESP_ERROR_CHECK(sdspi_host_init_device(&config, &handle_));
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host_ = sdmmc_host_t SDSPI_HOST_DEFAULT();
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host_.slot = handle_;
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// Will return ESP_ERR_INVALID_RESPONSE if there is no card
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esp_err_t err = sdmmc_card_init(&host_, &card_);
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if (err != ESP_OK) {
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ESP_LOGW(TAG, "Failed to read, err: %d", err);
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return Error::FAILED_TO_READ;
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}
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ESP_ERROR_CHECK(esp_vfs_fat_register(kStoragePath, "", kMaxOpenFiles, &fs_));
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ff_diskio_register_sdmmc(fs_->pdrv, &card_);
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// Mount right now, not on first operation.
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FRESULT ferr = f_mount(fs_, "", 1);
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if (ferr != FR_OK) {
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ESP_LOGW(TAG, "Failed to mount, err: %d", ferr);
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return Error::FAILED_TO_MOUNT;
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}
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return Error::OK;
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}
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void SdStorage::Release(void) {
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auto lock = gpio_->AcquireSpiBus(GpioExpander::SD_CARD);
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// Unmount and unregister the filesystem
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f_unmount("");
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ff_diskio_register(fs_->pdrv, NULL);
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esp_vfs_fat_unregister_path(kStoragePath);
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fs_ = nullptr;
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// Uninstall the SPI driver
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sdspi_host_remove_device(this->handle_);
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sdspi_host_deinit();
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}
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} // namespace gay_ipod
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