138 lines
4.0 KiB
C
138 lines
4.0 KiB
C
#include "sdcard.h"
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#include "check.h"
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#include "log.h"
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#include "config.h"
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#include "esp_vfs_fat.h"
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#include "sdmmc_cmd.h"
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#define TAG "tdeck_sdcard"
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typedef struct {
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const char* mount_point;
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sdmmc_card_t* card;
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} MountData;
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/**
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* Before we can initialize the sdcard's SPI communications, we have to set all
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* other SPI pins on the board high.
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* See https://github.com/espressif/esp-idf/issues/1597
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* See https://github.com/Xinyuan-LilyGO/T-Deck/blob/master/examples/UnitTest/UnitTest.ino
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* @return success result
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*/
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static bool sdcard_init() {
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TT_LOG_D(TAG, "init");
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gpio_config_t config = {
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.pin_bit_mask = BIT64(TDECK_SDCARD_PIN_CS) | BIT64(TDECK_RADIO_PIN_CS) | BIT64(TDECK_LCD_PIN_CS),
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.mode = GPIO_MODE_OUTPUT,
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.pull_up_en = GPIO_PULLUP_DISABLE,
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.pull_down_en = GPIO_PULLDOWN_DISABLE,
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.intr_type = GPIO_INTR_DISABLE,
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};
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if (gpio_config(&config) != ESP_OK) {
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TT_LOG_E(TAG, "GPIO init failed");
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return false;
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}
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if (gpio_set_level(TDECK_SDCARD_PIN_CS, 1) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set board CS pin high");
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return false;
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}
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if (gpio_set_level(TDECK_RADIO_PIN_CS, 1) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set radio CS pin high");
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return false;
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}
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if (gpio_set_level(TDECK_LCD_PIN_CS, 1) != ESP_OK) {
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TT_LOG_E(TAG, "Failed to set TFT CS pin high");
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return false;
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}
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return true;
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}
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static void* _Nullable sdcard_mount(const char* mount_point) {
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TT_LOG_I(TAG, "Mounting %s", mount_point);
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esp_vfs_fat_sdmmc_mount_config_t mount_config = {
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.format_if_mount_failed = TDECK_SDCARD_FORMAT_ON_MOUNT_FAILED,
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.max_files = TDECK_SDCARD_MAX_OPEN_FILES,
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.allocation_unit_size = TDECK_SDCARD_ALLOC_UNIT_SIZE,
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.disk_status_check_enable = TDECK_SDCARD_STATUS_CHECK_ENABLED
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};
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// Init without card detect (CD) and write protect (WD)
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sdspi_device_config_t slot_config = SDSPI_DEVICE_CONFIG_DEFAULT();
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slot_config.gpio_cs = TDECK_SDCARD_PIN_CS;
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slot_config.host_id = TDECK_SDCARD_SPI_HOST;
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sdmmc_host_t host = SDSPI_HOST_DEFAULT();
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// The following value is from T-Deck repo's UnitTest.ino project:
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// https://github.com/Xinyuan-LilyGO/T-Deck/blob/master/examples/UnitTest/UnitTest.ino
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// Observation: Using this automatically sets the bus to 20MHz
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host.max_freq_khz = TDECK_SDCARD_SPI_FREQUENCY;
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sdmmc_card_t* card;
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esp_err_t ret = esp_vfs_fat_sdspi_mount(mount_point, &host, &slot_config, &mount_config, &card);
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if (ret != ESP_OK) {
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if (ret == ESP_FAIL) {
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TT_LOG_E(TAG, "Mounting failed. Ensure the card is formatted with FAT.");
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} else {
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TT_LOG_E(TAG, "Mounting failed (%s)", esp_err_to_name(ret));
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}
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return NULL;
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}
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MountData* data = malloc(sizeof(MountData));
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*data = (MountData) {
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.card = card,
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.mount_point = mount_point
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};
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return data;
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}
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static void* sdcard_init_and_mount(const char* mount_point) {
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if (!sdcard_init()) {
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TT_LOG_E(TAG, "Failed to set SPI CS pins high. This is a pre-requisite for mounting.");
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return NULL;
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}
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MountData* data = sdcard_mount(mount_point);
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if (data == NULL) {
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TT_LOG_E(TAG, "Mount failed for %s", mount_point);
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return NULL;
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}
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sdmmc_card_print_info(stdout, data->card);
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return data;
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}
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static void sdcard_unmount(void* context) {
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MountData* data = (MountData*)context;
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TT_LOG_I(TAG, "Unmounting %s", data->mount_point);
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tt_assert(data != NULL);
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if (esp_vfs_fat_sdcard_unmount(data->mount_point, data->card) != ESP_OK) {
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TT_LOG_E(TAG, "Unmount failed for %s", data->mount_point);
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}
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free(data);
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}
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static bool sdcard_is_mounted(void* context) {
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MountData* data = (MountData*)context;
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return (data != NULL) && (sdmmc_get_status(data->card) == ESP_OK);
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}
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const SdCard tdeck_sdcard = {
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.mount = &sdcard_init_and_mount,
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.unmount = &sdcard_unmount,
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.is_mounted = &sdcard_is_mounted,
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.mount_behaviour = SdcardMountBehaviourAtBoot
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};
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