My RAK2270 Develop version unable to send AT command

LPWAN Nodes RAK Sticker Tracker RAK2270
1

Hi all,

I’m trying to debug my RAK Sticker
I downloaded RAK3272LP-SiP_latest_final.hex to the Sticker by STM32CubeProgramer.
And it seems responding by STM32CubeProgramer Log
I’m using ST-Link v2

01:36:40 : UPLOADING ...
01:36:40 :   Size          : 1024 Bytes
01:36:40 :   Address       : 0x8000000
01:36:40 : Read progress:
01:36:40 : Data read successfully
01:36:40 : Time elapsed during the read operation is: 00:00:00.047
01:36:42 : UPLOADING ...
01:36:42 :   Size          : 1024 Bytes
01:36:42 :   Address       : 0x8000000
01:36:42 : Read progress:
01:36:42 : Data read successfully
01:36:42 : Time elapsed during the read operation is: 00:00:00.044
01:36:43 : UPLOADING ...
01:36:43 :   Size          : 1024 Bytes
01:36:43 :   Address       : 0x8000000
01:36:43 : Read progress:
01:36:43 : Data read successfully
01:36:43 : Time elapsed during the read operation is: 00:00:00.056
01:36:44 : UPLOADING ...
01:36:44 :   Size          : 1024 Bytes
01:36:44 :   Address       : 0x8000000
01:36:44 : Read progress:
01:36:44 : Data read successfully
01:36:44 : Time elapsed during the read operation is: 00:00:00.046

But I can’t see any response from the Serial Monitor by UART
It just empty show

image
image2458×498 23 KB

Anyone get the similar issue and resolved it?

2

Welcome to RAK forum @whyn4 ,

The hex file you uploaded is wrong. It must be RAK3272-SiP. RAK2270 uses the standard SiP and not the LP-SiP.

With regards to UART, do you use UART2? Is TX connected to RX of the USB-Serial converter and vice versa? Can you show me your connections? When you try to send the AT commands, is the ST-Link already disconnected?

You can also try to use the UART bootloading instead of STlink. It works for me all the time on my sticker.

3

Hello @carlrowan,

Thank you so much for your reply.
I was thought LP for LoRaWAN, is this correct?
If I use RAK3272-SiP, does it work with LoRaWAN instead of Helium?

4

LP is for Low-Power. The RAK3172LP-SiP is specifically designed to use the low power RF path.

That current FW can work on any LNS like Helium, TTN, WisGate Built-in LNS, etc.

1 Like