Hi all, good morning
I'm using the demo board DK-TM4C129x Tiva microcontroller Series for send/receive data from/to PC via RS232 connection.
I already got a hardware connection. But I can' run only the Ti polling examples code.
The code for interrupt driven not warking, because interrupt don't became handled.
I'm using UART5.
In the follow my code:
//*****************************************************************************
// UART5 interrupt handler.
//*****************************************************************************
void UARTIntHandler(void)
{
uint32_t ui32Status;
// Get the interrrupt status.
ui32Status = UARTIntStatus(UART5_BASE, true);
// Clear the asserted interrupts.
UARTIntClear(UART5_BASE, ui32Status);
// Loop while there are characters in the receive FIFO.
while(UARTCharsAvail(UART5_BASE))
{
// Read the next character from the UART and write it back to the UART.
UARTCharPutNonBlocking(UART5_BASE,
UARTCharGetNonBlocking(UART5_BASE));
}
}
//*****************************************************************************
// Send a string to the UART.
//*****************************************************************************
void UARTSend(const uint8_t *pui8Buffer, uint32_t ui32Count)
{
// Loop while there are more characters to send
while(ui32Count--)
{
// Write the next character to the UART.
UARTCharPutNonBlocking(UART5_BASE, *pui8Buffer++);
}
}
//*****************************************************************************
// UART5 interrupt main
//*****************************************************************************
int main(void)
{
uint32_t ui32SysClock;
tContext sContext;
// Run from the PLL at 120 MHz.
ui32SysClock = SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART5); // UART5
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH); // GPIOH
IntMasterEnable(); // Enable processor interrupts.
// Set GPIO PH6 and PH7 as UART5 pins.
GPIOPinConfigure(GPIO_PH6_U5RX);
GPIOPinConfigure(GPIO_PH7_U5TX);
ROM_GPIOPinTypeUART(GPIO_PORTH_BASE, GPIO_PIN_6 | GPIO_PIN_7);
// Configure the UART5 for 115,200, 8-N-1 operation.
UARTConfigSetExpClk(UART5_BASE, ui32SysClock, 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
IntEnable(INT_UART5);
UARTIntEnable(UART5_BASE, UART_INT_RX| UART_INT_RT);
// Prompt for text to be entered.
UARTSend((uint8_t *)"Enter text: ", 12);
// Loop forever echoing data through the UART.
while(1)
{
}
}
Thanks a lot
M
