/**@brief Function for handling callbacks from pstorage module.
*
* @details Handles pstorage results for clear and storage operation. For detailed description of
* the parameters provided with the callback, please refer to \ref pstorage_ntf_cb_t.
*/
static void pstorage_callback_handler(pstorage_handle_t * p_handle,
uint8_t op_code,
uint32_t result,
uint8_t * p_data,
uint32_t data_len)
{
switch (op_code)
{
case PSTORAGE_STORE_OP_CODE:
if ((m_dfu_state == DFU_STATE_RX_DATA_PKT) && (m_data_pkt_cb != NULL))
{
m_data_pkt_cb(DATA_PACKET, result, p_data);
}
break;
case PSTORAGE_CLEAR_OP_CODE:
if (m_dfu_state == DFU_STATE_PREPARING)
{
m_functions.cleared();
m_dfu_state = DFU_STATE_RDY;
if (m_data_pkt_cb != NULL)
{
m_data_pkt_cb(START_PACKET, result, p_data);
}
}
break;
default:
break;
}
APP_ERROR_CHECK(result);
}
/**@brief Function for preparing of flash before receiving SoftDevice image.
*
* @details This function will erase current application area to ensure sufficient amount of
* storage for the SoftDevice image. Upon erase complete a callback will be done.
* See \ref dfu_bank_prepare_t for further details.
*/
static void dfu_prepare_func_app_erase(uint32_t image_size)
{
if(m_start_packet.sd_image_size != 0)
{
mp_storage_handle_active = m_storage_handle_sd;
}
else
{
mp_storage_handle_active = m_storage_handle_app;
}
// Doing a SoftDevice update thus current application must be cleared to ensure enough space
// for new SoftDevice.
m_dfu_state = DFU_STATE_PREPARING;
nrf_flash_erase(mp_storage_handle_active, m_image_size);
m_functions.cleared();
m_dfu_state = DFU_STATE_RDY;
}
uint32_t dfu_image_activate()
{
uint32_t err_code;
switch (m_dfu_state)
{
case DFU_STATE_WAIT_4_ACTIVATE:
// Stop the DFU Timer because the peer activity need not be monitored any longer.
err_code = app_timer_stop(m_dfu_timer_id);
APP_ERROR_CHECK(err_code);
err_code = m_functions.activate();
break;
default:
err_code = NRF_ERROR_INVALID_STATE;
break;
}
return err_code;
}
uint32_t dfu_start_pkt_handle(dfu_update_packet_t * p_packet)
{
uint32_t err_code;
m_start_packet = *(p_packet->params.start_packet);
// Check that the requested update procedure is supported.
// Currently the following combinations are allowed:
// - Application
// - SoftDevice
// - Bootloader
// - SoftDevice with Bootloader
if (IS_UPDATING_APP(m_start_packet) &&
(IS_UPDATING_SD(m_start_packet) || IS_UPDATING_BL(m_start_packet)))
{
// App update is only supported independently.
return NRF_ERROR_NOT_SUPPORTED;
}
if (!(IS_WORD_SIZED(m_start_packet.sd_image_size) &&
IS_WORD_SIZED(m_start_packet.bl_image_size) &&
IS_WORD_SIZED(m_start_packet.app_image_size)))
{
// Image_sizes are not a multiple of 4 (word size).
return NRF_ERROR_NOT_SUPPORTED;
}
m_image_size = m_start_packet.sd_image_size + m_start_packet.bl_image_size +
m_start_packet.app_image_size;
if (m_start_packet.bl_image_size > DFU_BL_IMAGE_MAX_SIZE)
{
return NRF_ERROR_DATA_SIZE;
}
if (m_image_size > (DFU_IMAGE_MAX_SIZE_FULL))
{
return NRF_ERROR_DATA_SIZE;
}
m_functions.prepare = dfu_prepare_func_app_erase;
m_functions.cleared = dfu_cleared_func_app;
if (IS_UPDATING_SD(m_start_packet))
{
m_functions.activate = dfu_activate_sd;
}
else if (IS_UPDATING_BL(m_start_packet))
{
m_functions.activate = dfu_activate_bl;
}
else
{
m_functions.activate = dfu_activate_app;
}
switch (m_dfu_state)
{
case DFU_STATE_IDLE:
// Valid peer activity detected. Hence restart the DFU timer.
err_code = dfu_timer_restart();
if (err_code != NRF_SUCCESS)
{
return err_code;
}
m_functions.prepare(m_image_size);
break;
default:
err_code = NRF_ERROR_INVALID_STATE;
break;
}
return err_code;
}