I've tried to make use of UART five of TM4C123GXL UART5. Having used UART0 and UART1 in the same code I copied initialising code and edited it accordingly:
void UART5Init(void){
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE); /* Enable PORT E which is used UART5 */
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART5); /* Enabling UART5 peripheral */
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_UART5)){ /* If peripheral is not configured, wait a bit */
}
GPIOPinConfigure(GPIO_PE4_U5RX);
GPIOPinConfigure(GPIO_PE5_U5TX);
GPIOPinTypeUART(GPIO_PORTE_BASE, GPIO_PIN_4 | GPIO_PIN_5);
UARTClockSourceSet(UART5_BASE, UART_CLOCK_SYSTEM);
UARTStdioConfig(5, 115200, 50000000);
}
For testing such system I tried a loopback test and it doesn't work. Other UARTS don't seem to send anything either. I tried to check if there's some bits that need unlocking and PE1 and PE5 aren't configured as some particular peripheral part. What could be wrong?
