/******************************** UART initialization function ***********************/
void Long_Uart0_Init(void)
{
uint32_t ui32_SystemClock;
RINGBUF_Init(&long_Uart0_TxRingBuf, long_Uart0_TxBuf, sizeof(long_Uart0_TxBuf));
RINGBUF_Init(&long_Uart0_RxRingBuf, long_Uart0_RxBuf, sizeof(long_Uart0_RxBuf));
ui32_SystemClock = u32_UsrSystemClockGet();
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
IntDisable(INT_UART0);
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
UARTConfigSetExpClk(UART0_BASE, ui32_SystemClock, 19200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
UARTIntRegister(UART0_BASE, &UART0_RxTxHandler);
UARTIntClear(UART0_BASE, UART_INT_RX | UART_INT_TX);
UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
UARTTxIntModeSet(UART0_BASE, UART_TXINT_MODE_EOT);
IntEnable(INT_UART0);
}
void Uart::enable(uint32_t baudrate, uint32_t config, uint32_t mode)
{
// Store the UART baudrate, configuration and mode
baudrate_ = baudrate;
config_ = config;
mode_ = mode;
// Enable peripheral except in deep sleep modes (e.g. LPM1, LPM2, LPM3)
SysCtrlPeripheralEnable(uart_.peripheral);
SysCtrlPeripheralSleepEnable(uart_.peripheral);
SysCtrlPeripheralDeepSleepDisable(uart_.peripheral);
// Disable peripheral previous to configuring it
UARTDisable(uart_.peripheral);
// Set IO clock as UART clock source
UARTClockSourceSet(uart_.base, uart_.clock);
// Configure the UART RX and TX pins
IOCPinConfigPeriphInput(rx_.getPort(), rx_.getPin(), rx_.getIoc());
IOCPinConfigPeriphOutput(tx_.getPort(), tx_.getPin(), tx_.getIoc());
// Configure the UART GPIOs
GPIOPinTypeUARTInput(rx_.getPort(), rx_.getPin());
GPIOPinTypeUARTOutput(tx_.getPort(), tx_.getPin());
// Configure the UART
UARTConfigSetExpClk(uart_.base, SysCtrlIOClockGet(), baudrate_, config_);
// Disable FIFO as we only use a one-byte buffer
UARTFIFODisable(uart_.base);
// Raise an interrupt at the end of transmission
UARTTxIntModeSet(uart_.base, mode_);
// Enable UART hardware
UARTEnable(uart_.base);
}
void bluetooth_init(uint32_t baudrate) {
uint32_t ui32_SystemClock;
ui32_SystemClock = u32_UsrSystemClockGet();
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
UARTConfigSetExpClk(UART0_BASE, ui32_SystemClock, baudrate,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
// UARTFIFOEnable(UART0_BASE);
// UARTFIFOLevelSet(UART0_BASE, UART_FIFO_TX7_8, UART_FIFO_RX1_8);
UARTIntRegister(UART0_BASE, &Bluetooth_RxTxHandler);
IntEnable(INT_UART0);
UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT | UART_INT_TX);
UARTTxIntModeSet(UART0_BASE, UART_TXINT_MODE_EOT);
HC05_ClearEvtQueue();
}
