in main/kvswebrtc_example_main.c [166:287]
void app_main(void)
{
//Initialize NVS
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
wifi_init_sta();
// initialize the fatfs and sd card.
{
ESP_LOGI(TAG, "Initializing SD card");
#ifndef USE_SPI_MODE
ESP_LOGI(TAG, "Using SDMMC peripheral");
sdmmc_host_t host = SDMMC_HOST_DEFAULT();
// This initializes the slot without card detect (CD) and write protect (WP) signals.
// Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
// To use 1-line SD mode, uncomment the following line:
// slot_config.width = 1;
// GPIOs 15, 2, 4, 12, 13 should have external 10k pull-ups.
// Internal pull-ups are not sufficient. However, enabling internal pull-ups
// does make a difference some boards, so we do that here.
gpio_set_pull_mode(15, GPIO_PULLUP_ONLY); // CMD, needed in 4- and 1- line modes
gpio_set_pull_mode(2, GPIO_PULLUP_ONLY); // D0, needed in 4- and 1-line modes
gpio_set_pull_mode(4, GPIO_PULLUP_ONLY); // D1, needed in 4-line mode only
gpio_set_pull_mode(12, GPIO_PULLUP_ONLY); // D2, needed in 4-line mode only
gpio_set_pull_mode(13, GPIO_PULLUP_ONLY); // D3, needed in 4- and 1-line modes
#else
ESP_LOGI(TAG, "Using SPI peripheral");
sdmmc_host_t host = SDSPI_HOST_DEFAULT();
sdspi_slot_config_t slot_config = SDSPI_SLOT_CONFIG_DEFAULT();
slot_config.gpio_miso = PIN_NUM_MISO;
slot_config.gpio_mosi = PIN_NUM_MOSI;
slot_config.gpio_sck = PIN_NUM_CLK;
slot_config.gpio_cs = PIN_NUM_CS;
// This initializes the slot without card detect (CD) and write protect (WP) signals.
// Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
#endif //USE_SPI_MODE
// Options for mounting the filesystem.
// If format_if_mount_failed is set to true, SD card will be partitioned and
// formatted in case when mounting fails.
esp_vfs_fat_sdmmc_mount_config_t mount_config = {
.format_if_mount_failed = false,
.max_files = 5,
.allocation_unit_size = 16 * 1024
};
// Use settings defined above to initialize SD card and mount FAT filesystem.
// Note: esp_vfs_fat_sdmmc_mount is an all-in-one convenience function.
// Please check its source code and implement error recovery when developing
// production applications.
sdmmc_card_t* card;
esp_err_t ret = esp_vfs_fat_sdmmc_mount("/sdcard", &host, &slot_config, &mount_config, &card);
if (ret != ESP_OK) {
if (ret == ESP_FAIL) {
ESP_LOGE(TAG, "Failed to mount filesystem. "
"If you want the card to be formatted, set format_if_mount_failed = true.");
} else {
ESP_LOGE(TAG, "Failed to initialize the card (%s). "
"Make sure SD card lines have pull-up resistors in place.", esp_err_to_name(ret));
}
return;
}
// Card has been initialized, print its properties
sdmmc_card_print_info(stdout, card);
}
// using ntp to acquire the current time.
{
initialize_sntp();
// wait for time to be set
time_t now = 0;
struct tm timeinfo = { 0 };
int retry = 0;
const int retry_count = 10;
while (sntp_get_sync_status() == SNTP_SYNC_STATUS_RESET && ++retry < retry_count) {
ESP_LOGI(TAG, "Waiting for system time to be set... (%d/%d)", retry, retry_count);
vTaskDelay(2000 / portTICK_PERIOD_MS);
}
time(&now);
localtime_r(&now, &timeinfo);
}
{
uint32_t freeSize = esp_get_free_heap_size();
printf("The available size of heap:%d\n", freeSize);
}
setenv("AWS_KVS_LOG_LEVEL", CONFIG_AWS_KVS_LOG_LEVEL, 1);
setenv("AWS_DEFAULT_REGION", CONFIG_AWS_DEFAULT_REGION, 1);
setenv("AWS_WEBRTC_CHANNEL", CONFIG_AWS_KVS_CHANNEL, 1);
#define IOT_CREDENTIAL (0)
#if (IOT_CREDENTIAL == 0)
setenv("AWS_ACCESS_KEY_ID", CONFIG_AWS_ACCESS_KEY_ID, 1);
setenv("AWS_SECRET_ACCESS_KEY", CONFIG_AWS_SECRET_ACCESS_KEY, 1);
#else
setenv("AWS_IOT_CORE_CREDENTIAL_ENDPOINT", CONFIG_AWS_IOT_CORE_CREDENTIAL_ENDPOINT, 1);
setenv("AWS_IOT_CORE_CERT", CONFIG_AWS_IOT_CORE_CERT, 1);
setenv("AWS_IOT_CORE_PRIVATE_KEY", CONFIG_AWS_IOT_CORE_PRIVATE_KEY, 1);
setenv("AWS_IOT_CORE_ROLE_ALIAS", CONFIG_AWS_IOT_CORE_ROLE_ALIAS, 1);
setenv("AWS_IOT_CORE_THING_NAME", CONFIG)AWS_IOT_CORE_THING_NAME, 1);
#endif
WebRTCAppMain(0, NULL);
// All done, unmount partition and disable SDMMC or SPI peripheral
esp_vfs_fat_sdmmc_unmount();
ESP_LOGI(TAG, "Card unmounted");
}