TM4C123GH6PM: FreeMODBUS Implementation

Ksawery

Part Number: TM4C123GH6PM

Hello,

I'm currently working on implementing the FreeMODBUS application on the TM4C123GH6PM microcontroller. Unfortunately i'm stuck, I get not response from the controller when testing with Modbus Poll on Windows. As far as i'm aware, I implemented everything correctly in the porting layer. I'm wondering whether anyone here has successfully ported the libarary to the TM4C123GH6PM controller, and would be willing to share their implementation?

My entire CCS 9.0.1 workspace is available at the following repository, in case anyone would like to look at my project:

https://ksaweryrettinger@bitbucket.org/ksaweryrettinger/workspacetm4c123g.git

Many thanks,

Ksawery

over 6 years ago

0 Charles Tsai over 6 years ago

TI__Guru**** 191886 points

Hi Kaswery,

The FreeMODBUS is a third party application that we have no experience with. Hopefully someone in the forum community has some FreeMODBUS experience to share. Have you use the scope to check if your host and the MCU are at least putting out correct or some signals?

0 Ksawery over 6 years ago in reply to Charles Tsai

Intellectual 540 points

Thank you, I'll wait and see if anyone has successfully implemented it. Meanwhile I'll try to debug the application and post any progress. I haven't used a scope to check the signals yet.

Regards,

Ksawery

0 Ksawery over 6 years ago in reply to Charles Tsai

Intellectual 540 points

I managed to get it working today, there were a few bugs in my timer, UART and interrupt configurations. For anyone interested, the working version is available in my repository:

https://ksaweryrettinger@bitbucket.org/ksaweryrettinger/workspacetm4c123g.git

Regards,

Ksawery

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TM4C123GH6PM: FreeMODBUS Implementation