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RTOS/TMDSEVM572X: Changing SDIO to UART1

Part Number: TMDSEVM572X

Tool/software: TI-RTOS

Hi! I want to change STDIO from UART3 to UART1.

I connected to pin 30(UART1_TXD) and pin 60(UART1_RXD) of connector named P18.

To "const boardPadDelayCfg_t pad[]" in boardPadDelayInit.c I add this lines:

/* UART1 - uart1_rxd on B27 - MyUART1 */
     {0x17E0, 0xE0000, {0x0, 0, 0}, {0x0, 0, 0}, {0x0, 0, 0}},
/* UART1 - uart1_txd on C26 - MyUART1 */
     {0x17E4, 0xA0000, {0x0, 0, 0}, {0x0, 0, 0}, {0x0, 0, 0}},

To initialize STDIO I use function UART_stdioInit with argument 0. i.e:

UART_stdioInit(0);

But it does not work. What am I doing wrong.

Processor is cortexA15.