打算将一个数组的数通过串口发送,处理后返回给pc,在例程基础上修改的,先试验的将接收到的数两两组合存入GetI那个数组中,于是编写的那一段
void
UARTIntHandler(void)
{
unsigned long ulStatus;
unsigned char num;
int i=1;
char Get_tempchar[2];
volatile int temp1;
//
// Get the interrrupt status.
//
ulStatus = UARTIntStatus(UART0_BASE, true);
//
// Clear the asserted interrupts.
//
UARTIntClear(UART0_BASE, ulStatus);
//
// Loop while there are characters in the receive FIFO.
//
while(UARTCharsAvail(UART0_BASE))
{
for(num=0;num<=1;num++)
{
Get_tempchar[num]=UARTCharGetNonBlocking(UART0_BASE);
}
temp1=Get_tempchar[0]<<8;
GetI=Get_tempchar[1]+temp1;
i=i+1;
}
}
理想的效果是我发送11 22 33 44 55 66 则GetI[0]=1122 GetI[1]=3344 GetI[2]=5566,但watch这个数组发现总是GetI[1]=5566,其他的都为0,求高手指教,没修改完的源代码如下:
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "driverlib/debug.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
//*****************************************************************************
//
//! addtogroup example_list
//! <h1>UART Echo (uart_echo)</h1>
//!
//! This example application utilizes the UART to echo text. The first UART
//! (connected to the FTDI virtual serial port on the Stellaris LM3S811
//! Evaluation Board) will be configured in 115,200 baud, 8-n-1 mode. All
//! characters received on the UART are transmitted back to the UART.
//
//*****************************************************************************
//*****************************************************************************
//
// The error routine that is called if the driver library encounters an error.
//
//*****************************************************************************
#ifdef DEBUG
void
__error__(char *pcFilename, unsigned long ulLine)
{
}
#endif
int GetI[10]={0};
int GetV[1001]={0};
//*****************************************************************************
//
// The UART interrupt handler.
//
//*****************************************************************************
void
UARTIntHandler(void)
{
unsigned long ulStatus;
unsigned char num;
int i=1;
char Get_tempchar[2];
volatile int temp1;
//
// Get the interrrupt status.
//
ulStatus = UARTIntStatus(UART0_BASE, true);
//
// Clear the asserted interrupts.
//
UARTIntClear(UART0_BASE, ulStatus);
//
// Loop while there are characters in the receive FIFO.
//
while(UARTCharsAvail(UART0_BASE))
{
for(num=0;num<=1;num++)
{
Get_tempchar[num]=UARTCharGetNonBlocking(UART0_BASE);
}
temp1=Get_tempchar[0]<<8;
GetI=Get_tempchar[1]+temp1;
i=i+1;
}
}
//*****************************************************************************
//
// Send a string to the UART.
//
//*****************************************************************************
void
UARTSend(const unsigned char *pucBuffer, unsigned long ulCount)
{
//
// Loop while there are more characters to send.
//
while(ulCount--)
{
//
// Write the next character to the UART.
//
UARTCharPutNonBlocking(UART0_BASE, *pucBuffer++);
}
}
//*****************************************************************************
//
// This example demonstrates how to send a string of data to the UART.
//
//*****************************************************************************
int
main(void)
{
//
// Set the clocking to run directly from the crystal.
//
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_6MHZ);
//
//
// Enable the peripherals used by this example.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
//
// Enable processor interrupts.
//
IntMasterEnable();
//
// Set GPIO A0 and A1 as UART pins.
//
GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Configure the UART for 115,200, 8-N-1 operation.
//
UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
UARTFIFOEnable(UART0_BASE);
UARTFIFOLevelSet(UART0_BASE, //
UART_FIFO_TX4_8, //
UART_FIFO_RX1_8); //
//
// Enable the UART interrupt.
//
IntEnable(INT_UART0);
UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
//
// Prompt for text to be entered.
//
UARTSend((unsigned char *)"Enter text: ", 12);
//UARTSend(*******,12);
//
// Loop forever echoing data through the UART.
//
while(1)
{
}
}
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本帖最后由 fancier 于 2012-4-25 03:25 编辑 ]
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之所以出现你现在看到的结果是应为,你每次操作完GetI后,数组的Index没有变化,所以每次进中断都是在对GetI[0]赋值,前面的被后面的覆盖了
剩下的想必不用再说了吧~
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