How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

QingF — Wed, 04 Mar 2020 08:55:29 GMT

It has not enter the on_packet_received() handler yet when I send {0x02,0x00,0x00} ;

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

bjorn-spockeli — Wed, 04 Mar 2020 08:37:07 GMT

OK, do you enter the on_packet_received() handler at all when you send {0x02,0x00,0x00} ?

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

QingF — Wed, 04 Mar 2020 07:12:42 GMT

I debugged as follow:

00> :INFO:Inside main
00> :DEBUG:In nrf_bootloader_init
00> :DEBUG:In real nrf_dfu_init
00> :DEBUG:running nrf_dfu_settings_init
00> :DEBUG:Enter nrf_dfu_continue
00> :DEBUG:Valid App
00> :DEBUG:Application sent bootloader request
00> :DEBUG:In nrf_dfu_transports_init
00> :DEBUG:num transports: 1
00> :DEBUG:UART initialized
00> :DEBUG:After nrf_dfu_transports_init
00> :DEBUG:Waiting for events

It's print same as send command use nRfutil tool from PC. but it has no the print of the SERIAL_DFU_OP_CODE_SET_RECEIPT_NOTIF case :

case SERIAL_DFU_OP_CODE_SET_RECEIPT_NOTIF:
NRF_LOG_DEBUG("Set receipt notif\r\n");------------------------ths line.

I also try to write the bytes of {0x02,0x00,0x00} to trigger it ,but no reponse too.

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

bjorn-spockeli — Tue, 03 Mar 2020 15:32:51 GMT

Please note that the serial bootloader in SDK v13.0.0 is considered experimental.

Can you debug the bootloader and verify that you enter the SERIAL_DFU_OP_CODE_SET_RECEIPT_NOTIF case in on_packet_received() in nrf_serial_dfu.c?

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

QingF — Tue, 03 Mar 2020 12:29:02 GMT

Hi bjorn-spokeli:

thanks for your answer!!

I had seen the SDK https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.0.0%2Flib_dfu_transport_serial.html Correspond with my nRF5_SDK_13.0.0

and I have performed the update from a PC user the nRFutil tool: nrfutil dfu serial -pkg application.zip -p COM7 -fc 0 -b 9600 . It update successfully. The next I will do is implemented the same function as the nrfutil tool in android system to update automaticlly.

According to the procedure of DFU protocol ,at first:

1. I set the PRN to 256 and send the following content:

byte[] PRN ={02,01,00}

   boolean isSuccessBegin = getSerialPort().SerialSendData(PRN);
   It should have a respond of [60 02 01],but I have not received any message; 
   I make sure the baudrate is corret，I can send other test commad and the 52832 reply to me successfully.
   Finally,if you have the java library ??

Thanks!

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

bjorn-spockeli — Tue, 03 Mar 2020 11:39:18 GMT

HI QingF.

we have a Serial Bootloader example in our SDK, see Secure DFU Bootloader over Serial Link (UART/USB). It uses the Secure Bootloader module and it has a serial transport layer, where the protocol is described here.

If you want to perform the update from a PC, then you can use our nRFutil tool, see nRF Util on our Infocenter. If you want to perform the update from another MCU, then one of our FAEs ported the nrfutil serial dfu functionality to a C library see https://github.com/jimmywong2003/nrf-slim-serial-uart-dfu-host-c-code.

Best regards

Bjørn

RE: How I can get a simple to help me understand the DFU procedure that Transfer of a firmware image?

QingF — Tue, 03 Mar 2020 09:54:03 GMT

Additional explanation：

My device is not supported BLE，So I must to transfer the firmware image by serial port. I found some demos,but all are about BLE . Where can I found the demo that transfer the firmware image by serial port ?