请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。
器件型号：TM4C129XNCZAD 大家好、我在 tm4c129xnczad 微控制器中为 atlease 4 UART 在 interupt 驱动的 UART 接收中工作、我已经实现了 UART 0的 interupt 接收 UART、就像我尝试 uart1的接收一样 、在那里我无法获取通过终端发送的字符、 我使用的 IDE 是 Code Composer、我在下面附上了我的代码。有关这一点的任何想法、请告诉我。
//********************************UART0_INITIALISATION ************************//
void Uart0_Init(void)
{
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
MAP_GPIOPinConfigure(GPIO_PA0_U0RX);
MAP_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0);
MAP_GPIOPinConfigure(GPIO_PA1_U0TX);
MAP_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_1);
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
MAP_UARTConfigSetExpClk(UART0_BASE, ui32SysClock, 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
MAP_IntEnable(INT_UART0);
MAP_UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
}
//********************************UART1_INITIALISATION ************************//
void Uart1_Init(void)
{
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
MAP_GPIOPinConfigure(GPIO_PB0_U1RX);
MAP_GPIOPinTypeUART(GPIO_PORTB_BASE, GPIO_PIN_0);
MAP_GPIOPinConfigure(GPIO_PB1_U1TX);
MAP_GPIOPinTypeUART(GPIO_PORTB_BASE, GPIO_PIN_1);
MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
MAP_UARTConfigSetExpClk(UART1_BASE, ui32SysClock, 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
MAP_IntEnable(INT_UART1);
//MAP_UARTIntEnable(UART1_BASE, UART_INT_RX | UART_INT_RT);
}
//*****************************************************************************
//
// The UART interrupt handler.
//
//*****************************************************************************
void UART0IntHandler(void)
{
uint32_t ui32Status;
// MAP_UARTCharPutNonBlocking(UART0_BASE, input);
// GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_4, GPIO_PIN_4);
//
// Get the interrrupt status.
//
ui32Status = MAP_UARTIntStatus(UART0_BASE, true);
//
// Clear the asserted interrupts.
//
MAP_UARTIntClear(UART0_BASE, ui32Status);
//MAP_UARTCharPutNonBlocking(UART0_BASE,UARTCharGetNonBlocking(UART0_BASE));
input = UARTCharGetNonBlocking(UART0_BASE);
//
// Loop while there are characters in the receive FIFO.
//
/*while(MAP_UARTCharsAvail(UART0_BASE))
{
//
// Read the next character from the UART and write it back to the UART.
//
MAP_UARTCharPutNonBlocking(UART0_BASE,
UARTCharGetNonBlocking(UART0_BASE));
}*/
}
void UART1IntHandler(void)
{
uint32_t ui32Status;
// MAP_UARTCharPutNonBlocking(UART0_BASE, input);
// GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_4, GPIO_PIN_4);
//
// Get the interrrupt status.
//
ui32Status = MAP_UARTIntStatus(UART1_BASE, true);
//
// Clear the asserted interrupts.
//
MAP_UARTIntClear(UART1_BASE, ui32Status);
//MAP_UARTCharPutNonBlocking(UART0_BASE,UARTCharGetNonBlocking(UART0_BASE));
input_1 = UARTCharGetNonBlocking(UART1_BASE);
//
// Loop while there are characters in the receive FIFO.
//
/*while(MAP_UARTCharsAvail(UART0_BASE))
{
//
// Read the next character from the UART and write it back to the UART.
//
MAP_UARTCharPutNonBlocking(UART0_BASE,
UARTCharGetNonBlocking(UART0_BASE));
}*/
}
int main(void)
{
volatile uint32_t ui32Loop;
ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_240), 120000000);
//ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
Uart0_Init();
Uart1_Init();
MAP_UARTCharPutNonBlocking(UART0_BASE, 'a');
MAP_UARTCharPutNonBlocking(UART1_BASE, 'b');
//
// Enable the GPIO port that is used for the on-board LED.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);
//
// Check if the peripheral access is enabled.
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPION))
{
}
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// Check if the peripheral access is enabled.
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOF))
{
}
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOE))
{
}
//
// Enable the GPIO pin for the LED (PN0). Set the direction as output, and
// enable the GPIO pin for digital function.
//
GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_4);
GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_3);
GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_5);
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE, GPIO_PIN_6);
/*PORTF_DIR |= 0x0000003E; //set PF1, PF2, PF3 as output
PORTF_DEN |= 0x0000003E; //enable PF1, PF2, PF3
PORTF_DATA = 0;*/
//
// Loop forever.
//
while(1)
{
//
// Turn on the LED.
//
//MAP_UARTCharPutNonBlocking(UART1_BASE, 'b');
if(input != 0)
{
MAP_UARTCharPutNonBlocking(UART0_BASE, input);
input = 0;
}
if(input_1 != 0)
{
MAP_UARTCharPutNonBlocking(UART1_BASE, input_1);
input_1 = 0;
}
/*if(GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_5))
{
GPIO_PORTF_AHB_DATA_R |= (GPIO_PIN_4);
}
else
{
GPIO_PORTF_AHB_DATA_R &= ~(GPIO_PIN_4);
}*/
/* GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_4, GPIO_PIN_4);
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, GPIO_PIN_3);
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_5, GPIO_PIN_5);
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_6, GPIO_PIN_6);*/
//
// Delay for a bit.
//
/* for(ui32Loop = 0; ui32Loop < 2000000; ui32Loop++)
{
}*/
// PORTF_DATA |= (GPIO_PIN_4 | PF2 | PF3);
// SysCtlDelay(5000000);
delayMs(200);
//
// Turn off the LED.
//
// GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_4, 0x0);
/*GPIO_PORTF_AHB_DATA_R &= ~((GPIO_PIN_4));
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, 0x0);
GPIOPinWrite(GPIO_PORTE_BASE, GPIO_PIN_6, 0x0);
//PORTF_DATA &= ~(GPIO_PIN_4 | PF2 | PF3 );*/
delayUs(100);
// SysCtlDelay(5000000);
//
// Delay for a bit.
//
/* for(ui32Loop = 0; ui32Loop < 2000000; ui32Loop++)
{
}*/
}
return 0;
}
