Failed to burn bootloader: uploading error [in RAK 11720 board]

LPWAN Modules / EVBs RAK11720
1

Steps I Followed:

  1. First, connect the boot pin to VDD, the reset pin to GND, and power up the module.
  2. After a few seconds, disconnect the reset pin from GND.
  3. In the Arduino IDE, select the correct board and choose the “Burn Bootloader” option.
  4. Connect to the board over serial port COM100.
  5. The prompt reads: “Connecting with Corvette over serial port COM100… RESET RAK11720 BOARD!!! Sending Hello.”

At this stage, I reconnect the reset pin to GND, but I keep encountering the following error:

No response for command 0x00000000
received bytes 20
[‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x0’, ‘0x0’, ‘0x0’, ‘0xff’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x0’, ‘0x0’, ‘0x0’, ‘0x0’]
Traceback (most recent call last):
File “uart_wired_update.py”, line 353, in
File “uart_wired_update.py”, line 42, in main
File “uart_wired_update.py”, line 62, in connect_device
File “uart_wired_update.py”, line 252, in send_command
NoResponseError
[1436] Failed to execute script ‘uart_wired_update’ due to unhandled exception!
Failed to burn bootloader: uploading error: exit status 1

what to do?

2

Hi @Vignesh ,

Welcome to RAK forum.

This is a guide - https://www.youtube.com/watch?v=N9ABRh8VyA0

Generally you did it correct.

  • You can select immediately the COM port. No need to wait on step 4. It can be that you try to Burn the Bootloader but the serial port is not yet selected.
  • You have to reset the module immediately after the “RESET RAK11720 BOARD”