fatfs about esp32_explorer HOT 3 OPEN

This example works
https://github.com/espressif/esp-idf/tree/master/examples/storage/wear_levelling

but not ESP32 explorer example.

Any idea?

from esp32_explorer.

Fix by specifying allocation_unit_size

void FATFS_VFS::mount() {
esp_vfs_fat_mount_config_t mountConfig;
mountConfig.max_files = m_maxFiles;
mountConfig.format_if_mount_failed = true;
mountConfig.allocation_unit_size = 4096;

ESP_LOGD(LOG_TAG, "FATFS_VFS::mount(%s,%s)", m_mountPath.c_str(), m_partitionName.c_str());
ESP_ERROR_CHECK(esp_vfs_fat_spiflash_mount(m_mountPath.c_str(), m_partitionName.c_str(), &mountConfig, &m_wl_handle));

} // mount

from esp32_explorer.

Very NICE catch. It appears that the allocation_unit_size field was added 5 months (ago - Jan 2018) and that the library/code base in this project pre-dates that addition.

https://github.com/espressif/esp-idf/blame/363c096f2b4d518f5d423718973f76aa5e009fbc/components/fatfs/src/esp_vfs_fat.h#L110

This is a maintenance issue that we will fix by exposing the ability (or default) to set that value.

from esp32_explorer.