RTOS/CC2640R2F: CC2640R2F UART pin configuration

Austin Huang

Intellectual 970 points

Part Number: CC2640R2F

Tool/software: TI-RTOS

hi,

I am using CC2640R2 5XD . One question for UART configuration.

if possible change UART pin to

/* UART Board */
#define CC2640R2DK_5XD_UART_RX IOID_1 /* P1.7 */
#define CC2640R2DK_5XD_UART_TX IOID_2 /* P1.9 */

#define CC2640R2DK_5XD_UART_RX IOID_3 /* P1.7 */
#define CC2640R2DK_5XD_UART_TX IOID_2 /* P1.9 */

I tried both setting. But these didn't work well for me.

Thanks.

Austin

over 7 years ago

0 YiKai Chen over 7 years ago

Guru 735695 points

Do you try UART echo example?

0 SVS over 7 years ago in reply to YiKai Chen

TI__Genius 9705 points

In addition to trying the out of box UART echo example, if you are still not able to get it to work, please provide information on what error you are seeing when trying to program UART (initialization/read/write?).

0 Austin Huang over 7 years ago in reply to SVS

Intellectual 970 points

hi SVS,

if we keep original setting as below. the UART TX/RX is working well.

/* UART Board */
#define CC2640R2DK_5XD_UART_RX IOID_1 /* P1.7 */
#define CC2640R2DK_5XD_UART_TX IOID_0 /* P1.9 */

If possible to change pin for UART?? If not. Is it limitation on this UART pin changed??

Thanks.
Austin

0 YiKai Chen over 7 years ago in reply to Austin Huang

Guru 735695 points

Yes, you can use other IO pins for UAER.

0 Austin Huang over 7 years ago in reply to YiKai Chen

Intellectual 970 points

Hi YK:

I tried it. But it didn't work. Did you have sample for this??

Austin

0 YiKai Chen over 7 years ago in reply to Austin Huang

Guru 735695 points

I don’t have example for this since it always is straight forward. I suggest you to check if you modify correct board file for your UART IO pins.

0 Austin Huang over 7 years ago in reply to YiKai Chen

Intellectual 970 points

hi YK:

I tried it with some file as below in CC2640R2DK_5XD folder

CC2640R2DK_5XD.c/h
board.h

But it didn't work well for me.

/* UART Board */
#define CC2640R2DK_5XD_UART_RX IOID_1 /* P1.7 */
#define CC2640R2DK_5XD_UART_TX IOID_2 /* P1.9 */

Any comments??

Thanks.
Austin

0 YiKai Chen over 7 years ago in reply to Austin Huang

Guru 735695 points

Which example do you test?

0 Austin Huang over 7 years ago in reply to YiKai Chen

Intellectual 970 points

hi YK:

simple_peripheral_cc2640r2lp_app

We modified pre-defined for 5XD and UART keep default first. UART is OK.
/* UART Board */
#define CC2640R2DK_5XD_UART_RX IOID_1 /* P1.7 */
#define CC2640R2DK_5XD_UART_TX IOID_0 /* P1.9 */

Then try to change UART pin. But not work.

Thanks.
Austin

0 YiKai Chen over 7 years ago in reply to Austin Huang

Guru 735695 points

If you are using simple_peripheral example under blestack, you should modify CC2640R2_LAUNCHXL.h under YourSDKInstallationFolder\source\ti\blestack\boards\CC2640R2_LAUNCHXL. If you are using simple_peripheral example under ble5stack, you should modify CC2640R2_LAUNCHXL.h under YourSDKInstallationFolder\source\ti\ble5stack\boards\CC2640R2_LAUNCHXL. Make sure you modify correct board file.

0 SVS over 7 years ago in reply to YiKai Chen

TI__Genius 9705 points

Are you still having trouble with UART?

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RTOS/CC2640R2F: CC2640R2F UART pin configuration