Function esp_idf_svc::sys::esp_partition_read

pub unsafe extern "C" fn esp_partition_read(
    partition: *const esp_partition_t,
    src_offset: usize,
    dst: *mut c_void,
    size: usize,
) -> i32

@brief Read data from the partition

Partitions marked with an encryption flag will automatically be be read and decrypted via a cache mapping.

@param partition Pointer to partition structure obtained using esp_partition_find_first or esp_partition_get. Must be non-NULL. @param dst Pointer to the buffer where data should be stored. Pointer must be non-NULL and buffer must be at least ‘size’ bytes long. @param src_offset Address of the data to be read, relative to the beginning of the partition. @param size Size of data to be read, in bytes.

@return ESP_OK, if data was read successfully; ESP_ERR_INVALID_ARG, if src_offset exceeds partition size; ESP_ERR_INVALID_SIZE, if read would go out of bounds of the partition; or one of error codes from lower-level flash driver.