void uartBt_init(unsigned long baudrate) {
ROM_SysCtlPeripheralEnable(UARTBT_PORTENABLE);
ROM_SysCtlPeripheralEnable(UARTBT_PERIPHENABLE);
if(UARTBT_PORT == GPIO_PORTD_BASE) {
// Enable port PD7 for UART2-TX by opening the lock and selecting the bits we want to modify in the GPIO commit register.
HWREG(UARTBT_PORT + GPIO_O_LOCK) = GPIO_LOCK_KEY_DD;
HWREG(UARTBT_PORT + GPIO_O_CR) = 0x80;
}
ROM_GPIOPinConfigure(UARTBT_PINMAP_TX);
ROM_GPIOPinConfigure(UARTBT_PINMAP_RX);
ROM_GPIOPinTypeUART(UARTBT_PORT, UARTBT_PIN_RX | UARTBT_PIN_TX);
// Configure the UART for the specified baud rate, 8-N-1 operation.
ROM_UARTConfigSetExpClk(UARTBT_BASE, ROM_SysCtlClockGet(), baudrate, (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));
ROM_UARTFIFODisable(UARTBT_BASE); // FIFO disabled so that short commands come through immediately
// ROM_UARTFIFOEnable(UARTBT_BASE);
// ROM_UARTFIFOLevelSet(UARTBT_BASE, UART_FIFO_TX4_8, UART_FIFO_RX4_8);
UARTIntRegister(UARTBT_BASE, ISR_uartBt);
ROM_IntEnable(UARTBT_INTERRUPT);
ROM_UARTIntEnable(UARTBT_BASE, UART_INT_RX);
}
int
main(void)
{
//
// Set the clocking to run directly from the crystal at 16MHz.
//
SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
g_ui32SysClock = SysCtlClockGet();
//
// Enable the GPIO port that is used for the on-board LED.
// Enable the GPIO pins for the LED (PN0).
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, LED_BLUE|LED_GREEN);
GPIOPinWrite(GPIO_PORTF_BASE, LED_GREEN, LED_GREEN);
DELAY(500);
GPIOPinWrite(GPIO_PORTF_BASE, LED_BLUE|LED_GREEN, 0);
//
// Enable the peripherals used by this example.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
//
// Enable processor interrupts.
//
ROM_IntMasterEnable();
//
// Set GPIO A0 and A1 as UART pins.
//
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Set GPIO B0 and B1 as UART pins.
//
GPIOPinConfigure(GPIO_PB0_U1RX);
GPIOPinConfigure(GPIO_PB1_U1TX);
ROM_GPIOPinTypeUART(GPIO_PORTB_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Configure the UART for 115,200, 8-N-1 operation.
//
ROM_UARTConfigSetExpClk(UART0_BASE, g_ui32SysClock, 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
ROM_UARTConfigSetExpClk(UART1_BASE, g_ui32SysClock, 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
//
// Enable the UART interrupt.
//
ROM_IntEnable(INT_UART0);
ROM_UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
ROM_IntEnable(INT_UART1);
ROM_UARTIntEnable(UART1_BASE, UART_INT_RX | UART_INT_RT);
ROM_UARTFIFODisable(UART0_BASE);
ROM_UARTFIFODisable(UART1_BASE);
//
// Loop forever echoing data through the UART.
//
while(1);
}
