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#include "storage.h"
#include "diskio_impl.h"
#include "diskio_sdmmc.h"
#include "driver/sdspi_host.h"
#include "esp_check.h"
#include "esp_err.h"
#include "esp_vfs_fat.h"
#include "ff.h"
#include "gpio-expander.h"
#include "hal/gpio_types.h"
#include "hal/spi_types.h"
#include "sdmmc_cmd.h"
namespace gay_ipod {
SdStorage::SdStorage(GpioExpander *gpio) {
this->gpio_ = gpio;
}
SdStorage::~SdStorage() {
ESP_ERROR_CHECK(sdspi_host_deinit());
}
esp_err_t SdStorage::Acquire(void) {
// First switch to this device, and pull CS.
gpio_->set_sd_mux(GpioExpander::ESP);
gpio_->set_sd_cs(false);
gpio_->Write();
// Now we can init the driver and set up the SD card into SPI mode.
sdspi_host_init();
sdspi_device_config_t config = {
.host_id = VSPI_HOST,
// CS handled manually bc it's on the GPIO expander
.gpio_cs = GPIO_NUM_2,
.gpio_cd = SDSPI_SLOT_NO_CD,
.gpio_wp = SDSPI_SLOT_NO_WP,
.gpio_int = GPIO_NUM_NC,
};
esp_err_t ret = sdspi_host_init_device(&config, &handle_);
if (ret != ESP_OK) {
gpio_->set_sd_cs(true);
gpio_->Write();
return ret;
}
host_ = sdmmc_host_t SDSPI_HOST_DEFAULT();
host_.slot = handle_;
// Will return ESP_ERR_INVALID_RESPONSE if there is no card
// TODO: use our own error code
ret = sdmmc_card_init(&host_, &card_);
if (ret != ESP_OK) {
gpio_->set_sd_cs(true);
gpio_->Write();
return ret;
}
ESP_ERROR_CHECK(
esp_vfs_fat_register(STORAGE_PATH, "", MAX_OPEN_FILES, &fs_));
ff_diskio_register_sdmmc(fs_->pdrv, &card_);
// Mount right now, not on first operation.
FRESULT fret = f_mount(fs_, "", 1);
if (fret != FR_OK) {
// TODO: Proper error handling
return ESP_ERR_INVALID_MAC;
}
// We're done chatting for now.
//gpio_->set_sd_cs(true);
//gpio_->Write();
return ret;
}
esp_err_t SdStorage::Release(void) {
gpio_->set_sd_cs(false);
gpio_->Write();
// Unmount and unregister the filesystem
f_unmount("");
ff_diskio_register(fs_->pdrv, NULL);
esp_vfs_fat_unregister_path(STORAGE_PATH);
fs_ = nullptr;
// Uninstall the SPI driver
sdspi_host_remove_device(this->handle_);
sdspi_host_deinit();
gpio_->set_sd_mux(GpioExpander::USB);
gpio_->set_sd_cs(true);
gpio_->Write();
return ESP_OK;
}
} // namespace gay_ipod
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