Coexistence of serial reception and anti-buzy with loop function

LPWAN Modules / EVBs RAK3172
1

LoraP2Pjusinki_jikancopy.ino (5.4 KB)

I thought it would be derived from the linked story and made it a separate thread.

A different arudino program than the one in the link
(main change: psend when serial is received)

and I got a lot of bouncing errors in the IDE.

Answer (if the application does loop() without delay and keeps the MCU busy, it may affect the firmware download)

So I added a wait time because of this

 delay(10);//dame ms
it seems to be unable to get serial reception.
(I also tried with a thread like commented out, but no serial reception)

api.system.sleep.all(100);//ms>>baundratio era- generate
then the program works fine and
baundraito occurred.

Should I handle this outside of the loop function as much as possible?
If you have a sample, please let me know.

2

With all your errors in the serial connection, I would first

  • check for stable power supply of the RAK3172, is it a custom PCB?
  • check your UART-to-USB converter, maybe try another one
  • check the USB cable itself, try another one
3

beegee thanks for the reply.

Please check the stable power supply of
1RAK3172. Is it a custom PCB ?
2Check the UART-USB converter, try another converter
3Check the USB cable itself, try another cable

Since this is happening, I’m guessing 1 or 2 are not available.
I have tried several cable switches.

With the arudino code you disclosed
//delay(10);//dame ms
//api.system.sleep.all(100);//ms
then serial is received and psend is sent.

4

Finally found time to look into the code you shared.

You are interfering with (and maybe even blocking) the Serial port handling of RUI3 when you use your serialThread()'** or when you use **Serial.available()** and **serial_read_line()`. That’s most likely the reason why you have problems with the firmware upload.

If you need the Serial port to send commands to your device you should use a custom AT command to receive the commands.

In custom_at.cpp you can find an examples how I implement custom AT commands.

Another thing, in recv_cb() you are doing way too many things. The RX and TX callbacks are called from the LoRa handler, you should use them e.g. to create a flag that you handle in the loop() or in a timer callback function. If you spend too much time in the callbacks, the whole flow of the underlying RUI3 state machine is influenced.

6

Thanks beegee for the reply.

When I do this serial receive process with custom,
AT commands are less or no response.
(I have tried making the serial receive process a timer, a thread, etc.)
As long as I am doing the serial receive process, I can’t do AT commands for RUI3?
Is it not possible to do this?

7

You can do Serial.print/printf/println/write without problems.
But when you start intercepting incoming data from Serial, the RUI3 AT commands are not going where they should go.

As I said, if I need to send something to the device over Serial, I use custom AT commands. If I need to send something from the device, I just send it.

8

I stopped receiving custom serials and the phenomenon has not occurred for 3 days so far.

9

Previous proprietary serial reception has been dropped. Put a new custom FW.
[xxx_LoraP2Pjusinki_wintablet4.ino|attachment] (upload://8I2XKQWGb5LdVTwJyeluuu4sHVy.ino) (4.7 KB)

bouncing errors in the IDE occurred.
AT commands are not accepted. The application crashes and the UART stops working?
I can receive serial from RAK3127.
When AT commands are not accepted, it becomes dysfunctional.

10

There is no attachment with your code. Can you re-upload or share otherwise.

11

xxx_LoraP2Pjusinki_wintablet4.ino (4.7 KB)

There was a secret part and I raised it again. It seems to have disappeared then.