Tiva TM4C129x Serial to Ethernet using more UART problem

Murat

Hello Ti,

I am using TM4C1294 with serial-to-ethernet firmware and i can communicate between TCP/IP and UART. Also I have a custom board and it works fine too.

But I need to use more than 2 uart. Therefore i have copied all of uart definitions as other working uart. So, I can transmit data over TCP to new uart TX but I cannot receive any data from new uart RX, the IC goes to reset vector. Also If I pulldown the RX signal, it goes to reset too.

In Conlusion : The old channels (uart3 and uart4) are still working. The new channels (uart2 and Uart6) are working only with transmit function, not receive function becuse of IC reset.

Could you please help or give any idea to increase uart channel.

Best Regards

Murat

over 8 years ago

0 Amit Ashara over 8 years ago

TI__Guru**** 244400 points

Hello Murat

Can you check if the Interrupt Vector table has the interrupt handlers correctly mapped to the UART2 and UART6?

0 Murat over 8 years ago in reply to Amit Ashara

Prodigy 50 points

Hello Amit,

I have changed the vector table as you can see picture below. But i am not sure that i have to make more modifications for interrupt.

Best Regards.

0 Amit Ashara over 8 years ago in reply to Murat

TI__Guru**** 244400 points

Hello Murat

As long as you map the interrupt handlers correctly to the positions and enable the interrupt in the NVIC correctly the routine should work with the updated base addresses for the UARTs

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Tiva TM4C129x Serial to Ethernet using more UART problem