Hi,
When it try to upgrade the firmware on my RAK4270 module via UART 1 using RAK DAPLink and RAK Device Upgrade Tool I get the error “Device firmware upgrade timeout”.
The present version of firmware running on the RAK4270 is V3.3.0.18.
Note:
I’m trying to load a custom FW bin file generated using RUI V2 examples and complied using the RAK Online RUI compiling tool.
With regards to the DAPLink connections to the RAK4270, I’m using DAPLink pins U_Tx & U_Rx connected to pins 4 & 5 RAK4270 with DAPLink also providing 3.3V & GND connections to pins 20 & 19 on the RAK4270 as per the getting started guide.
Any help would be very much appreciated.
Regards
Greg
Edit:
I hooked the output from the DAPLink to another RS232/TTL converter observed the output when running the FW update tool. The following two commands were observed “at+boot” and “at+update”. when run this two commands on the RAK4270 uart interface I observed the following responses:
at+boot
LoRa (R) is a registered trademark or service mark of Semtech Corporation or its affiliates. LoRaWAN (R) is a licensed mark.
RAK4270 version:3.3.0.18
UART1 work mode: RUI_UART_NORMAL, 115200, N81
UART2 work mode: RUI_UART_NORMAL, 115200, N81
Current work_mode:LoRaWAN, join_mode:OTAA, MulticastEnable: false, Class: C
Initialization OK
at+update
ERROR: 1
Looks like the RAK4270 doesn’t recognise the “at+update” command?
I repeated the same process of compiling RUI V2 firmware using online tool for RAK811 module and updated firmware using DFU tool and this worked fine.
Any suggestions?