Function writeAppDataWithDeferredHeader

src/idf/idf_update.cpp:244–269

}

bool writeAppDataWithDeferredHeader(const uint8_t *data, size_t len) {
    size_t offset = 0;

    if (ctx.app_header_pending && ctx.app_header_len < kAppHeaderHoldSize) {
        const size_t copy_len = std::min(kAppHeaderHoldSize - ctx.app_header_len, len);
        memcpy(ctx.app_header + ctx.app_header_len, data, copy_len);
        ctx.app_header_len += copy_len;
        ctx.written += copy_len;
        offset += copy_len;

        if (ctx.app_header_len == 1 && ctx.app_header[0] != ESP_IMAGE_HEADER_MAGIC) {
            setError(LAUNCHER_UPDATE_ERROR_MAGIC_BYTE);
            return false;
        }
        if (ctx.app_header_len != kAppHeaderHoldSize) return true;
    }

    if (offset >= len) return true;

    const size_t partition_offset = ctx.written;
    const size_t write_len = len - offset;
    if (!writeFlash(partition_offset, data + offset, write_len)) return false;

    ctx.written += write_len;
    return true;
}

bool writeData(const uint8_t *data, size_t len) {
    if (ctx.target == LAUNCHER_UPDATE_APP) return writeAppDataWithDeferredHeader(data, len);