Hardware control in FCM mode on a SL808x

Legacy Open AT
1

Hi all

I had an app running serial port and tcp client.

serial port is in FCM mode, baud rate 9600, parity odd, hardware control,
I am using AT+IFC=2,2, AT+ICF=2,0 to setup the serial port.

After load the app to board, I have to unplug the serial connection to be able to receive data. It running well a few seconds, it can receive data for a while, then it couldn’t for some reason. I have to unplug the connection, then plug back, serial port receive data ok for a while.

What’s the problem? I guess is RTS/CTS holding the line. If plug the same serial cable to PC, PC receives data perfect.

2

Can you check and share “AT+WHCNF?” response?
Thx

3

+WHCNF: 1,1,0
+WHCNF: 5,0,0
+WHCNF: 6,3

Thanks

4

Sorry, may worth to check also “AT+WASR?” and make sure AT+W32k=0 for testing.

5

Sorry a bit late on reply.

Here is the result:

at+w32k=0

OK
AT+WASR?

+WASR: 0,1,“GPIO24”,6

OK

6

Is it SL808x or SL808xT this one is about?
Did hardware flow control even get added to the firmware yet? I’m still waiting for even a beta firmware that have full UART support for SL808xT.

7

if run ati, I get:

Sierra Wireless

SL8084T Product

OK