nrf52840 interactive command uart flushing

[yu1998]

sdk17.0.2

so i am trying to flush rx/tx while the command execute

cannot find 

app_fifo_flush()

or

app_uart_flush()

anyone know how to do it?

[ovrebekk]

Hi 

Are you using one of the standard SDK examples?

There is an app_uart_flush() function for flushing the buffers when using the app_uart driver, but it will not do anything unless you make sure to use the app_uart_fifo.c implementation. 

When you say you cannot find this function, do you mean that the build fails if you try to call it?

The function is declared on line 244 of app_uart.h, and implemented on line 186 of app_uart_fifo.c

Best regards
Torbjørn

[yu1998]

hello  I am using standard sdk but still cannot find both of those 

app_uart.h,  app_uart_fifo.c in interactice command  

sdk17.0.2

[ovrebekk]

Hi 

Which example are you using?

If you open the ble_app_uart example for instance both app_uart.h and app_uart_fifo.c should already be added to the project. 

Best regards
Torbjørn

[yu1998]

ovrebekk

nrf52840 interactive command

I am using 

ble_app_interactive

[ovrebekk]

Hi

I don't think there is any way to flush the UART buffers when using CLI. 

Is there a particular reason you need to do this?
Do you just need to know when the command is finished?

Best regards
Torbjørn

[yu1998]

you  mean I cannot clear the  uart_rx tx

ovrebekk

I mean I found a bug happened it randomly

for example sometimes when I type on the keyboard "connect AF:BF:CF:DF:EF:FF" but when I type to con or connect when I press the next character it with output random character on the uart so I wonder why is this happening(Seldom happen)

another thing is if I just copy-paste "connect AF:BF:CF:DF:EF:FF"     

sometimes  the output show up on uart wrong 

it shows "connect??? AF:???BF:C???F:DF:EF:FF"

I am 100% sure I copy the correct string 

for example

[15:06:31.505]OUT↙⊙connect 5C:F3:70:38:AE:36 

↓
[15:06:31.508]IN↘↑connect 5C:F3:70connect 5C:F3:70:38:Act 5CE6 
wrong parameter count 

you can see the uart shows wrong what I copy on the uart

I copy it correctly but the Uart shows wrong

so I think if I can clean up the rx-tx in uart

or you know if there is any other problem