UART TM4C123GH6PM

[phandinhkhanh1995]

anh chị cho em hỏi khi em copy file mẫu về và chỉnh sửa file build nhưng báo lỗ ở :
các dòng:
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
IntEnable(INT_UART0);
cụ thể các lỗi ghi ở console:
"../main.c", line 34: error #20: identifier "GPIO_PA0_U0RX" is undefined
"../main.c", line 35: error #20: identifier "GPIO_PA1_U0TX" is undefined

"../main.c", line 45: warning #225-D: function "INT_RESOLVE" declared implicitly
>> Compilation failure
"../main.c", line 45: error #20: identifier "INT_UART0_" is undefined
em cám ơn!

 

[phandinhkhanh1995]

code mẫu :
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
void UARTIntHandler(void)
{
uint32_t ui32Status;

ui32Status = UARTIntStatus(UART0_BASE, true); //get interrupt status

UARTIntClear(UART0_BASE, ui32Status); //clear the asserted interrupts

while(UARTCharsAvail(UART0_BASE)) //loop while there are chars
{
UARTCharPutNonBlocking(UART0_BASE, UARTCharGetNonBlocking(UART0_BASE)); //echo character
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, GPIO_PIN_2); //blink LED
SysCtlDelay(SysCtlClockGet() / (1000 * 3)); //delay ~1 msec
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 0); //turn off LED
}
}
int main(void) {

SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);

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);

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF); //enable GPIO port for LED
GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_2); //enable pin for LED PF2

UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));

IntMasterEnable(); //enable processor interrupts
IntEnable(INT_UART0);
UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT); //only enable RX and TX interrupts

UARTCharPut(UART0_BASE, 'E');
UARTCharPut(UART0_BASE, 'n');
UARTCharPut(UART0_BASE, 't');
UARTCharPut(UART0_BASE, 'e');
UARTCharPut(UART0_BASE, 'r');
UARTCharPut(UART0_BASE, ' ');
UARTCharPut(UART0_BASE, 'T');
UARTCharPut(UART0_BASE, 'e');
UARTCharPut(UART0_BASE, 'x');
UARTCharPut(UART0_BASE, 't');
UARTCharPut(UART0_BASE, ':');
UARTCharPut(UART0_BASE, ' ');

while (1) //let interrupt handler do the UART echo function
{
if (UARTCharsAvail(UART0_BASE)) UARTCharPut(UART0_BASE, UARTCharGet(UART0_BASE));
}

}

 

[quang]

em có sửa code trong file startup_ccs.c chưa

 

[phandinhkhanh1995]

là sao ak ., em có sửa file tm4c123gh6ph statup_ccs.c rồi nhưng mak nó bóa lỗi ở mấy vị trí đó ak !