Printf not on Console

[michel_93]

Hi everyone,

I have the following issue. I have migrated a code for a Bluetooth Mesh network gateway which I developed a few years ago with version 2.1.0 I guess to the mesh sdk 5.0.0. So far so good. The gateway uses the printf statements to forward data received from the network to a Computer. After the migration the printf statement dosn't work anymore. I can not see any messages on the Console. I use also the RTT logger for the debugging mode. In the old version this worked very well beside the printf statement with no issue. I have now tried several different approaches to solve this issue, I have seen that know a RETARGET function is added which I also added to my sdk_config.h file and added the retarged.c file to my project. This has not solved the problem. I have no idea what to do and why it does not work anymore. I have also tried different configurations for all the UART Enable statements in the sdk_config.h file. This is quite anoying because it is almost impossible to compare the sdk_config.h file to different examples because there are so different. Are there other ways to send statments via UART to a COM port? Find attatch my sdk_config.h file. Let me know if you need further information.7384.sdk_config.h

[Hung Bui]

Hi Michel, 

I did some work to add UART log into mesh example a while back. You can find the example here. It was for SDK v4.0 but I believe it should be very similar to v5.0.0 since it's not a big change between these two versions. 

[michel_93]

Thanks,

I will have a look at it, but do you know why the prinf function does not anymore work besides the RTT messages?

[Hung Bui]

Hi Michel, 
I think it's has something to do with the back end used to output to UART. We migrated to the app_uart library in newer Mesh SDK versions instead of the mesh uart library. 

[michel_93]

I have now added the app_fifo.c and app_uart_fifo.c to my project and changed the sdk_config.h file according to your example. Now the printf statment does again work to write messages to the COM port. So thanks for your help.