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130 lines
3.5 KiB
130 lines
3.5 KiB
/*
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* Copyright 2023 jacqueline <me@jacqueline.id.au>
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*
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* SPDX-License-Identifier: GPL-3.0-only
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*/
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#include "drivers/storage.hpp"
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#include <atomic>
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#include <memory>
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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/sdmmc_types.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 "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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#include "drivers/gpios.hpp"
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#include "memory_resource.hpp"
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[[maybe_unused]] static const char* kTag = "SDSTORAGE";
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static const uint8_t kMaxOpenFiles = 8;
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namespace drivers {
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const char* kStoragePath = "/sdcard";
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auto SdStorage::Create(IGpios& gpio) -> cpp::result<SdStorage*, Error> {
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gpio.WriteSync(IGpios::Pin::kSdPowerEnable, 1);
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gpio.WriteSync(IGpios::Pin::kSdMuxSwitch, IGpios::SD_MUX_ESP);
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gpio.WriteSync(IGpios::Pin::kSdMuxDisable, 0);
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sdspi_dev_handle_t handle;
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FATFS* fs = nullptr;
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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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.gpio_cs = GPIO_NUM_21,
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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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if (esp_err_t err = sdspi_host_init_device(&config, &handle) != ESP_OK) {
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ESP_LOGE(kTag, "Failed to init, err %d", err);
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return cpp::fail(Error::FAILED_TO_INIT);
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}
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auto host = std::make_unique<sdmmc_host_t>(sdmmc_host_t SDSPI_HOST_DEFAULT());
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host->max_freq_khz = SDMMC_FREQ_HIGHSPEED;
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auto card = std::make_unique<sdmmc_card_t>();
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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.get(), card.get());
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if (err != ESP_OK) {
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ESP_LOGW(kTag, "Failed to read, err: %s", esp_err_to_name(err));
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return cpp::fail(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.get());
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ff_sdmmc_set_disk_status_check(fs->pdrv, true);
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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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std::pmr::string err_str;
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switch (ferr) {
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case FR_DISK_ERR:
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err_str = "FR_DISK_ERR";
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break;
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case FR_NOT_READY:
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err_str = "FR_NOT_READY";
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break;
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case FR_NO_FILESYSTEM:
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err_str = "FR_NO_FILESYSTEM";
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break;
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default:
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err_str = std::to_string(ferr);
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}
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ESP_LOGW(kTag, "Failed to mount, err: %s", err_str.c_str());
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return cpp::fail(Error::FAILED_TO_MOUNT);
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}
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return new SdStorage(gpio, handle, std::move(host), std::move(card), fs);
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}
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SdStorage::SdStorage(IGpios& gpio,
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sdspi_dev_handle_t handle,
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std::unique_ptr<sdmmc_host_t> host,
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std::unique_ptr<sdmmc_card_t> card,
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FATFS* fs)
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: gpio_(gpio),
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handle_(handle),
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host_(std::move(host)),
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card_(std::move(card)),
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fs_(fs) {}
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SdStorage::~SdStorage() {
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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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gpio_.WriteSync(IGpios::Pin::kSdMuxDisable, 1);
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gpio_.WriteSync(IGpios::Pin::kSdPowerEnable, 0);
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}
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auto SdStorage::GetFs() -> FATFS* {
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return fs_;
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}
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} // namespace drivers
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