About UART data transmitting and receiving for TM4C1294KCPDT Microcontroller

SARATH BANDARU

Hi all,

I want to write a code for transmitting and receiving few characters through UART2 by setting baudrate as 115200,WLEN : 8 bits,No parity, 1 Stop bit and without interrupts.init.h.docx init.c.docx main.c.docxHow to write the transmit and receive functions and which register can be accessed to print the transmit and receive data. I am new to Embedded C programming through UART, so please help me regarding this. I am attaching the source code files.

Regards,

Sarath.

over 10 years ago

0 Amit Ashara over 10 years ago

TI__Guru**** 244400 points

Hello Sarath,

Please refer to the uart_echo program in TivaWare. That would form the basis for your app development

Regards
Amit

0 SARATH BANDARU over 10 years ago in reply to Amit Ashara

Intellectual 500 points

Hi Amit,

Thanks for your reply.

Regards,

Sarath.

0 Amit Ashara over 10 years ago in reply to SARATH BANDARU

TI__Guru**** 244400 points

Hello Sarath,

Review of the code files also show the use of DRM. Note that this is almost the same as DRM in TivaWare. I woild strongly ask you to move away from it as it is very easy to make mistakes using DRM and hard detecting them.

Regards
Amit

0 SARATH BANDARU over 10 years ago in reply to Amit Ashara

Intellectual 500 points

Dear Amit,

I didn't understand the exact meaning of DRM but understood i have to program the UART using the example code which having already driverlib library api functions given in Tivaware.

Regards,

Sarath.

0 Amit Ashara over 10 years ago in reply to SARATH BANDARU

TI__Guru**** 244400 points

Hello Sarath,

Your code uses
RCGCUART = 0x00000004; //activate clock for UART2
RCGCGPIO = 0x00000008; // GPIO Port D Run Mode Clock

This is called Direct Register Macro (DRM)

Regards
Amit

0 SARATH BANDARU over 10 years ago in reply to Amit Ashara

Intellectual 500 points

Dear Amit,

Can i program RCGCUART register name as RCGCUART_R.

Regards,

Sarath

0 Amit Ashara over 10 years ago in reply to SARATH BANDARU

TI__Guru**** 244400 points

Hello Sarath,

Yes you can, but maintaining and debugging this code is tougher. We have seen it in the past and hence the word of advice to move to TivaWare API's

Regards
Amit

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About UART data transmitting and receiving for TM4C1294KCPDT Microcontroller