Question

我遇到了与创建GPS跟踪器（RX和UART2）相关的问题，我可以通过UART1将第一个1024字节的数据包发送到PC。但是当我再次尝试回忆相同的功能时，我遇到了数据无法正确出现的问题。

我猜这是启用中断的事情，但不确定UART。

由于

PS。使用PIC32MX440256H微控制器，MPLAB写入，GPS模块到PIC UART2 RX和UART1在PC上显示。

输出到串行（PC）：

<CL>GPS DATA TRACKER V.1
<CL>next is GPS1
<CL>$GPGGA,164445.792,3753.2311,S,14440.0408,E,1,04,1.8,21.6,M,2.9,M,,0000*42
<CL>$GPGSA,A,3,13,20,10,16,,,,,,,,,4.2,1.8,3.8*30
<CL>$GPGSV,2,1,07,13,71,181,39,16,43,125,41,10,38,238,34,20,22,006,32*79
<CL>$GPGSV,2,2,07,19,05,053,34,27,00,000,38,30,00,000,28*45
<CL>$GPRMC,164445.792,A,3753.2311,S,14440.0408,E,000.0,000.0,180314,,,A*7C
<CL>$GPVTG,000.0,T,,M,000.0,N,000.0,K,A*0D
<CL>$GPGGA,164446.792,3753.2311,S,14440.0408,E,1,04,1.8,21.6,M,2.9,M,,0000*41
<CL>$GPGSA,A,3,13,20,10,16,,,,,,,,,4.2,1.8,3.8*30
<CL>$GPGSV,2,1,07,13,71,181,40,16,43,125,41,10,38,238,34,20,22,006,32*77
<CL>$GPGSV,2,2,07,19,05,053,35,27,00,000,38,30,00,000,28*44
<CL>$GPRMC,164446.792,A,3753.2311,S,14440.0408,E,000.0,000.0,180314,,,A*7F
<CL>$GPVTG,000.0,T,,M,000.0,N,000.0,K,A*0D
<CL>$GPGGA,164447.792,3753.2311,S,14440.0408,E,1,04,1.8,21.6,M,2.9,M,,0000*40
<CL>$GPGSA,A,3,13,20,10,16,,,,,,,,,4.2,1.8,3.8*30
<CL>$GPGSV,2,1,07,13,71,181,39,16,43,125,41,10,38,238,34,20,22,006,32*79
<CL>$GPGSV,2,2,07,19,05,053,34,27,00,000,38,30,00,000,28*45
<CL>$GPRMC,164447.792,A,3753.2311,S,14440.0408,E,000.0,00
<CL>next is GPS2
<CL>0.0,1111111111111111111111111111111111111111111111111111111111111111111111111111111
111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
11111111111111111111111111111111111111111111111111111111111111111111111111111

代码：

int main (void)
{
TRISEbits.TRISE0 = 0; // for breadboard LED
LATEbits.LATE0 = OFF;

TRISDbits.TRISD1 = 0; // PINGUINO LED2
LATDbits.LATD1 = OFF;

mJTAGPortEnable(0); // Disable JTAG

// Turn on the interrupts
INTEnableSystemMultiVectoredInt();
SYSTEMConfigPerformance(GetSystemClock());
mOSCSetPBDIV(OSC_PB_DIV_2);

//UINT32 UART1DataReceived;

//UINT32 UART2DataReceived;

UARTConfigure(UART1, UART_ENABLE_PINS_TX_RX_ONLY);
UARTSetFifoMode(UART1, UART_INTERRUPT_ON_TX_NOT_FULL | UART_INTERRUPT_ON_RX_NOT_EMPTY);
UARTSetLineControl(UART1, UART_DATA_SIZE_8_BITS | UART_PARITY_NONE | UART_STOP_BITS_1);
UARTSetDataRate(UART1, GetPeripheralClock(), 9600);
UARTEnable(UART1, UART_ENABLE_FLAGS(UART_PERIPHERAL | UART_RX | UART_TX));

UARTConfigure(UART2, UART_ENABLE_PINS_TX_RX_ONLY);
UARTSetFifoMode(UART2, UART_INTERRUPT_ON_TX_NOT_FULL | UART_INTERRUPT_ON_RX_NOT_EMPTY);
UARTSetLineControl(UART2, UART_DATA_SIZE_8_BITS | UART_PARITY_NONE | UART_STOP_BITS_1);
UARTSetDataRate(UART2, GetPeripheralClock(), 9600);
UARTEnable(UART2, UART_ENABLE_FLAGS(UART_PERIPHERAL | UART_RX | UART_TX));

SendDataUART1("\r\n", strlen("\r\n"));
SendDataUART1("GPS DATA TRACKER V.1",strlen("GPS DATA TRACKER V.1"));
SendDataUART1("\r\n", strlen("\r\n"));





GetDataGPS(gps1, 1024);
SendDataUART1("next is GPS1", strlen("next is GPS1"));
SendDataUART1("\r\n", strlen("\r\n"));
Delay_ms(1000) ;
SendDataUART1(gps1, strlen(gps1));
SendDataUART1("\r\n", strlen("\r\n"));

Delay_ms(1000) ;

SendDataUART1("next is GPS2", strlen("next is GPS2"));
SendDataUART1("\r\n", strlen("\r\n"));

Delay_ms(1000) ;

GetDataGPS(gps2, 1024);

Delay_ms(1000) ;
SendDataUART1(gps2, strlen(gps2));
SendDataUART1("\r\n", strlen("\r\n"));

Delay_ms(1000) ;

while(1);
}



void SendDataUART1(const char *buffer, UINT32 size)
{
while(size)
{
    while(!UARTTransmitterIsReady(UART1))
        ;
    UARTSendDataByte(UART1, *buffer);
    buffer++;
    size--;
}
while(!UARTTransmissionHasCompleted(UART1))
    ;
}


UINT32 GetDataUART1(char *buffer, UINT32 max_size)
{
UINT32 num_char;

num_char = 0;

while(num_char < max_size)
{
    UINT8 character;

    while(!UARTReceivedDataIsAvailable(UART1))
        ;

    character = UARTGetDataByte(UART1);

    if(character == '\r')
        break;

    *buffer = character;

    buffer++;
    num_char++;
}

return num_char;
}


void SendDataUART2(const char *buffer, UINT32 size)
{
while(size)
{
    while(!UARTTransmitterIsReady(UART2))
        ;
    UARTSendDataByte(UART2, *buffer);
    buffer++;
    size--;
}
while(!UARTTransmissionHasCompleted(UART2))
    ;
}

UINT32 GetDataGPS(char *buffer, UINT32 max_size)
{
UINT32 num_char;


num_char = 0;

while(num_char < max_size)
{
    UINT8 character;

    while(!DataRdyUART2())
        ;

    character = ReadUART2();


   // if(character == '\r')
    // break;

    *buffer = character;

    buffer++;
    num_char++;
}

return num_char;

}

UART接收数据问题：MPLAB

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