PIC18f4520配备GPS和LCD无法解决

您没有指定所有配置设置。特别是，您不接触WDT，因此默认为ON，因此它将定期重置PIC。关掉它。您有一个UARTHARADRITETHORTER（）函数，这似乎是毫无意义的。只有知道要接收的字符的确切数量才有用，这很少有用。这就是为什么你从来不叫它。如果你只收到一条完整的线（即收到，直到收到一个CR），那么你的生活会变得简单多了，然后把你所收到的字符串做比较。这种蛮力的方法是非常丑陋的，而且当你想要接收不止一个TYP时，它并不能很好地工作。弦的E



      以下为原文

    You have not specified ALL the config settings.
In particular, you don't touch WDT, so it defaults to on, so it will be resetting your PIC at regular intervals.
Turn it off.
 
You have a UART_Read_Text() function, which seems pretty pointless. It only works if you know the exact number of characters you are going to receive, which is rarely useful. That's why you never call it.
 
You'd make your life much easier if you just received a complete line (i.e. receive until you get a CR), and then do string compares on what you've received.
That brute force approach is pretty ugly, and isn't going to work well when you want to receive more than one type of string.
 
 
 

WDT关闭，我删除了UARTHAREADRITEX文本（）。我不知道如何做最后一部分，收到完整的一行。我理解你的意思是按字符分类NMEA字符串。有人提到使用“STRCMP”，我试图研究，但我更困惑。我如何简化在1字符串中寻找$GPPGA的部分，并从那里开始。谢谢你的帮助！



      以下为原文

    WDT is off, I removed the uart_read_text().  I'm not sure how to do the last part, receiving a complete line. I understand what you mean by sorting the NMEA strings character by character. Someone mentioned using "strcmp", I tried researching that, but I was even more confused. How could I simplify the part of looking for $GPPGA in 1 string and go from there. thankyou for your help!

定义X-TalthFRIQ 8000000 / /改变LCDcmd，包括/lt；Stdio.H.& Gt；15；Car Luon（15）；Car UrtARTION（const long int BurdRead）；LVP= OFF，CPD= OFF，OSC＝INTIO7，WDT＝OFCHARAR UARTHINIT（const long int BurdRead）{un= int int x；x=（x xTalthFrq-BaDead * 64）/（BaurRead *64）；SpBrg= x；Syc＝0；SPEN＝1；TrISC7＝1；TrISC6＝1；CREN＝1；TXEN＝1。1；返回1；返回0；} chARUARTYDATAAdRead（）{RealRCIF；} chuUARTHEAD Read（）{（）！Mode LCDcmd（0x32）；//LCDCMD（0x2C）；//2-L模式LCDcmd（0x0C）；//DISP on，Curs关闭，Blink On LCDcmd（0x01）；}//Culsial-LCDcmd（int UnORN）{//LCD CMD 4位，E（BIT7），RS（BIT4）PORTD＝0；/E＝0 Rs＝0 int＝UNICORN；γ延迟（2000）；麒麟=（（麒麟& gt；and 4；）；0x0f）0x80；//e＝1 Rs＝0，将上NIB写入LCD：SR R＝UNICORN，Y延迟（2000）；UNICORN＝UNICORN ANP；0x0F；//E＝0，保存较低（下NIB将被发送）PORTD＝独角兽，Y延迟（2000）；PORTD＝0；//E＝0 RS= 0 UnrONN＝TEMP；麒麟=（U）NICORN和0x0F）0x80；//E＝1 Rs＝0，将下一个NIB写入LCD：清除高位位、位掩码PORTD＝独角兽、Y延迟（2000）；UNICORN = UNICORN和AMP；0x0F；//E＝0，保存较低（下NIB要发送）POTD＝独角兽，γ延迟（2000）；} LCDDATA（int独角兽）{//LCD CMD 4位，E（BIT7），RS（BIT4）PORTD。＝0；/e＝0个RT＝0个int＝UNICORN；γ延迟（1000）；UNICORN＝（（麒麟& gt；4；）；0x0f）×0x90；//e＝1 RS= 1，写上NIB到LCD：S.R. 4位，PORTD＝独角兽，γ延迟（1000）；UNICORN＝（麒麟和0x0F）0x10；//E＝0 RS= 1，保存较低（下NIB要发送）PORTD＝独角兽，γ延迟（1000）；PORTD＝0；/E＝0 Rs＝0麒麟＝TEMP；UNICORN＝（UNICORN和0x0F）×0x90；//E＝1 Rs＝1，写下NIB到LCD：清除高位位，位掩码PORTD＝独角兽，γ延迟（1000）；UNICORN＝（独角兽和0x0F）0x10；//E＝0 RS= 1，保存较低（下NIB要发送）PORTD＝独角兽，γ延迟（1000）}空LCDstring（char *独角兽）{int＝0；int计数；int计数＝Strlln（UNICORN）；//计数=字符串John的长度（i和lt；计数）{//while循环以确定LCD字符串的数据长度Timp＝独角兽[i++]；//TEMP=部分2LCD增量为空值放置LCDATATE（TEMP）；} VOID GPSGETDATA和DISIT（空隙）{int i；i＝0；char TEMP＝0；而（！）UTARJDATAYRADYY（））；TEMP= UARTHARAD（）；如果（TEMP=＝$$）{//$同时（！）UARTHARDATAYRADYY（））；TEMP= UARTHAREAD（）；如果（TEMP= =“G”）{//g同时（！）UARTHARDATAYRADYY（））；TEMP= UARTHARAD Read（）；如果（TEMP=＝P’）{//P同时（！）UARTHARDATAYRADYY（））；TEMP= UARTHAREAD（）；如果（TEMP= =“G”）{//g同时（！）UARTHARDATAYRADYY（））；TEMP= UARTHAREAD（）；如果（TEMP= =“G”）{//g同时（！）UTARJDATAYRADYY（））；TEMP= UARTHAREAD（）；如果（TEMP= =‘A’）{//A同时（！）UARTHYDATAYRADYY（））；TEMP= UARTHARAD Read（）；//跳过“，”同时（）！UARTHYDATAYRADYY（））；TEMP= UARTHARAD Read（）；（TEMP！{“！”）{同时（！）UARTHARDATAYRADYY（））；TEMP= UARTHARAD Read（）；I++；} i＝0；LCDCMD（0x0C），LCDstring（“LAT::”）；/ /光标到第一条带消息的同时（！）UARTHYDATAYRADYY（））；TEMP= UARTHARAD Read（）；（TEMP！{LAT= TEMP；LCDstring（TEMP）；/ /在LCD上显示纬度，同时（！）UTARJADATAYRADY（））；TEMP= UARTHARAD Read（）；I++；I=（i＝2）{ LCDstring（“°”）；/ /显示度符号LAT＝TEMP；} i＝0；同时（！）UARTHARDATAYRADYY（））；TEMP= UARTHARAD Read（）；LCDstring（′）；LCDstring（TEMP）；//显示方向LCD LCDCMD（0xC0），LCDstring（“Lon：”）；/ /光标到第二行带有消息同时（！）UARTHYDATAYRADYY（））；TEMP= UARTHARAD Read（）；（！）UARTHYDATAYRADYY（））；TEMP= UARTHARAD Read（）；（TEMP！{LCDStand（TEMP）；/ /显示LCD Lon＝TEMP的经度；同时（）！UTARJADATAYRADY（））；TEMP= UARTHARAD Read（）；I++；I=（i＝3）{ LCDstring（“°”）；//显示度符号Lon＝TEMP；} }，（！）UARTHYDATAYRADY（））；TEMP= UARTHARAD Read（）；//跳过“，”同时（）！UARTHYDATAYRADY（））；TEMP= UARTHARAD Read（）；//跳过“，”同时（）！UARTHYDATAYRADY（））；TEMP= UARTHARAD Read（）；//跳过“，”同时（）！UARTHYDATAYRADY（））；TEMP= UARTHARAD Read（）；//跳过“，”同时（）！UARTHYDATAYRADY（））；TEMP= UARTHARAD Read（）；//跳过“，”同时（TEMP！{“！”）{同时（！）（LCDcmd）（Typ＝UARTAX Read（））；/LCDDATA（TEMP）；} } } } } int main（空隙）{OSCCon＝0x76；//将内部振荡器设置为8MHz TrISA＝0B11111110；TrISD= 0x00；TrISC＝0B11111111；//GPS（RC7）LCDINIT（）；（0x01）；UARTHARINIT（9600）；而（1）{PababiTr.R0＝1；//led在GPSGETDATA和DISDL上。UARTAyt（）；γ延迟（1000）；}返回0；}



      以下为原文

    #define _XTAL_FREQ 8000000 // subject to change

#include // width values
#include
#include
#include
#include // string readout data

void LCDinit(), LCDcmd(int unicorn), LCDstring(char *unicorn), LCDdata(int unicorn);

char LAT[15];
char LON[15];
char UART_Init(const long int baudrate);

#pragma config BOREN = ON,LVP = OFF,CPD = OFF,OSC = INTIO7,WDT = OFF

char UART_Init(const long int baudrate){
    unsigned int x;
    x = (_XTAL_FREQ - baudrate*64)/(baudrate*64);
    SPBRG = x;
    SYNC = 0;
    SPEN = 1;
    TRISC7 = 1;
    TRISC6 = 1;
    CREN = 1;
    TXEN = 1;
    return 1;
    return 0;}

char UART_Data_Ready(){
    return RCIF;}

char UART_Read(){
    while(!RCIF);
    return RCREG;}

void LCDinit(){
    LCDcmd(0x33);           // 4b Mode
    LCDcmd(0x32);           // E
    LCDcmd(0x2C);           // 2-L mode
    LCDcmd(0x0C);           // Disp On,Curs Off,Blink On
    LCDcmd(0x01);}          // clear

void LCDcmd(int unicorn){                                              // LCD CMD 4-BIT, E(bit7),RS(bit4)
    PORTD = 0;                                                               // E=0 RS=0
    int temp = unicorn;
    _delay(2000);
    unicorn = ((unicorn >> 4) & 0x0F)|0x80;          // E=1 RS=0, writes UPPER NIB to LCD: S.R. 4 bits, clears upper
    PORTD = unicorn, _delay(2000);
    unicorn = unicorn & 0x0F;                                               // E=0, preserve lower (lower nib is to be sent)
    PORTD = unicorn, _delay(2000);
    PORTD = 0;                                                  // E=0 RS=0
    unicorn = temp;
    unicorn = (unicorn & 0x0F)|0x80;                   // E=1 RS=0, writes LOWER NIB to LCD: clears upper bits, bitmask
    PORTD = unicorn, _delay(2000);
    unicorn = unicorn & 0x0F;                                               // E=0, preserve lower (lower nib is to be sent)
    PORTD = unicorn, _delay(2000);}

void LCDdata(int unicorn){                                                          // LCD CMD 4-BIT, E(bit7),RS(bit4)
    PORTD = 0;                                                                      // E=0 RS=0
    int temp = unicorn;
    _delay(1000);
    unicorn = ((unicorn >> 4) & 0x0F)|0x90;               // E=1 RS=1, writes UPPER NIB to LCD: S.R. 4 bits,
    PORTD = unicorn, _delay(1000);
    unicorn = (unicorn & 0x0F)|0x10;                     // E=0 RS=1, preserve lower (lower nib is to be sent)
    PORTD = unicorn, _delay(1000);
    PORTD = 0;                                              // E=0 RS=0
    unicorn = temp;
    unicorn = (unicorn & 0x0F)|0x90;               // E=1 RS=1, writes LOWER NIB to LCD: clears upper bits, bitmask
    PORTD = unicorn, _delay(1000);
    unicorn = (unicorn & 0x0F)|0x10;                          // E=0 RS=1, preserve lower (lower nib is to be sent)
    PORTD = unicorn, _delay(1000);}

void LCDstring(char *unicorn){
    int I = 0;
    int temp;
    int count = strlen(unicorn);                            // count = the length of the string john
    while(I < count){                                               // While loop to determine the length of data for LCD string
    temp = unicorn[I++];                                            // temp = part2LCD increment for the null value places
    LCDdata(temp);}}

void GPS_GetDataAndDisplayIt(void){
    int i;
    i=0;
    char Temp = 0;
    while(!UART_Data_Ready());
    Temp = UART_Read();
    if (Temp == '$'){                                           // $
        while(!UART_Data_Ready());
        Temp = UART_Read();
        if (Temp == 'G'){                                       // G
            while(!UART_Data_Ready());
            Temp = UART_Read();
            if (Temp == 'P'){                                   // P
                while(!UART_Data_Ready());
                Temp = UART_Read();
                if (Temp == 'G'){                               // G
                    while(!UART_Data_Ready());
                    Temp = UART_Read();
                    if (Temp == 'G'){                           // G
                        while(!UART_Data_Ready());
                        Temp = UART_Read();
                        if (Temp == 'A'){                       // A
                            while(!UART_Data_Ready());
                            Temp = UART_Read();                                                 // skipping ','
                            while(!UART_Data_Ready());
                            Temp = UART_Read();
                            while (Temp != ','){
                                while(!UART_Data_Ready());
                                Temp = UART_Read();
                                i ++;}
                            i = 0;
                            LCDcmd(0x0C),LCDstring("LAT:");                     // cursor to 1st line with message
                            while(!UART_Data_Ready());
                            Temp = UART_Read();
                            while (Temp != ','){
                                LAT = Temp;

                                LCDstring(Temp);                                        // Displaying latitude on LCD
                                while(!UART_Data_Ready());
                                Temp = UART_Read();
                                i ++;
                                if (i == 2){
                                    LCDstring("°");                                  // Displaying degree sign
                                    LAT = Temp;}}
                            i = 0;
                            while(!UART_Data_Ready());
                            Temp = UART_Read();
                            LCDstring(' ');
                            LCDstring(Temp);                                     // Display Direction on LCD
                            LCDcmd(0xC0),LCDstring("LON:");                        // cursor to 2nd line with message
                            while(!UART_Data_Ready());
                            Temp =UART_Read();
                            while(!UART_Data_Ready());
                            Temp = UART_Read();
                            while (Temp != ','){
                                LCDstring(Temp);                                // Display Longitude on LCD
                                LON = Temp;
                                while(!UART_Data_Ready());
                                Temp = UART_Read();
                                i ++;
                                if (i == 3){
                                    LCDstring("°");                              // Displaying degree sign
                                    LON = Temp;}}

                            while(!UART_Data_Ready());
                            Temp = UART_Read();                         // Skip ','

                            while(!UART_Data_Ready());
                            Temp = UART_Read();                                          // Skip ','

                            while(!UART_Data_Ready());
                            Temp = UART_Read();                                 // Skip ','

                            while(!UART_Data_Ready());
                            Temp = UART_Read();                             // Skip ','

                            while(!UART_Data_Ready());
                            Temp = UART_Read();                                                     // Skip ','

                            while(Temp != ','){
                            while(!UART_Data_Ready());
                            Temp = UART_Read();
                                                                            // LCDdata(Temp);
}}}}}}}}
int main(void) {
    OSCCON = 0x76; // Sets internal oscillator to 8MHz
    TRISA = 0b11111110;
    TRISD = 0x00;
    TRISC = 0b11111111; // GPS(RC7)

    LCDinit();
    LCDcmd(0x01);
    UART_Init(9600);

    while(1){
        PORTAbits.RA0 = 1;              // LED on
        GPS_GetDataAndDisplayIt();
        _delay(1000);}
    return 0;}

我能解决这个问题。显然，我没有任何信号接收数据，所以我无法前进。GPS问题解决。



      以下为原文

    I was able to fix the issue. Apparently I did not have ANY signal to receive data and so I was not able to move forward.  GPS problem solved.

好了，GPS固定，现在的输出TX是给我一个问题。因此，在重新编程或重新启动芯片，我得到3个数据发送发生在OsOracoPo.我设置SDENSMS功能低的时间，所以它每5秒左右输出到GSM，我看到数据脉冲在行3次，然后停止。我没有任何限制，我知道，所以我不知道为什么它停止，我应该看到它不断发送每5秒。PIC有一个限制，如果GSM没有响应，那么它放弃发送数据吗？目前还没有GSM连接，因为我仍然为一个购物。只需将其应用于NoWoosi:通过禁用我的GPS信息在WHER（）中，Tx工作得很好，所以在我的GPS获取功能中，在3个计数之后停止代码，



      以下为原文

    Ok with the gps fixed, now the output TX is giving me an issue. So upon reprogramming or restarting chip I get 3 data sends occurring on the osillosope.  I set the time after SEND_SMS function low so it's outputing to gsm every 5 secs or so, I see the data pulse 3 times in row then stops. I don't have any limitation that I know of so I'm not sure why it stops, I should see it continually send every 5 secs. Does the PIC have a limitation that if the gsm doesn't respond then it quits sending data ? Currently have no gsm connected as I'm still shopping for one. Just scoping it for now
 
UPDATE: by disabling my GPS info in while() the Tx works fine, so something in my GPS get function is stopping the code after 3 counts,