如何使用XC8编译器在PIC18F26K80上进行UART通信

我需要一些帮助使用XC8编译器在PIC18F26K80上进行UART通信。我有TX和RX连接到蓝牙，以将数据发送到Android手机。当我使用我的函数UARTHARY WORD时，我只能写一个数字（0—9）或一个字符，而当它被两个撇号EX“8”所包围时，电话就在另一端被捡起。当我使用UARTHI WrreEXT文本时，当它被两个引号括起来时，能够发送一个字符串和/或数字。“Hello World”。因为必须使用“我不能发送一个值，我写一个变量。有没有办法来解决这个问题，还是有更好的方法来编写UART代码。我已经把代码粘贴到这个线程中，并附上我当前正在运行的代码，我对所有的建议都很开放，并且非常感激任何输入。



      以下为原文

    I need some help with a UART communication on a PIC18F26K80 using XC8 complier. I have the TX and RX connected to Bluetooth to send the data to an android phone. When I use my function UART_Write I am only able to write a one digit number (0-9) or one character and the phone picks it up on the other end when it is enclosed by two apostrophes ex. '8'. When I use UART_Write_Text and am able to send a string of characters and/ or numbers when it is enclosed by two quotation marks ex. "Hello World". Because of having to use the " " I am not able to send a value that I write to a variable. Is there any way around this or is there a better way to write Uart code. I have pasted the code into this thread along with attaching the code that I am currently running, I am open to all suggestions and would really appreciate any input.


/*PIC18F26k80
http://ww1.microchip.com/downloads/en/DeviceDoc/39977f.pdf */

#define _XTAL_FREQ 8000000
#include
#include "UART.h"

void main() {
TRISC4 = 0; // LED output
TRISC3 = 0; // LED output
TRISC2 = 0; // LED output
TRISC5 = 1; // input for data

LATC4 = 1; // initiate LED to on
LATC3 = 0; // initiate LED to off
LATC2 = 0; // initiate LED to off
UART_Init(9600); // baud rate

while(1)
{
//UART_Write('8'); // only will send a 1 digit number or letter inclosed by ''
UART_Write_Text("5"); // must include "" to send a string of numbers or letters
LATC4 = ~LATC4; // toggle LED to show program is running through the loop
__delay_ms(1000); // how often information is sent
}
}




/*PIC18F26k80
http://ww1.microchip.com/downloads/en/DeviceDoc/39977f.pdf */
char UART_Init(const long int baudrate)
{
unsigned int x;
TRISC6 = 0;
TRISC7 = 1;
x = (_XTAL_FREQ - baudrate*64)/(baudrate*64);
//x = (_XTAL_FREQ / baudrate / 64) - 1; // same as above, different formula
if(x<256) // low speed (using for this example)
{
TXSTA1bits.BRGH = 0; // 8-bit/Asynchronous
SPBRG1 = x; // speed setting
TXSTA1bits.SYNC = 0; // 0 = Asynchronous mode of EUSART
RCSTA1bits.SPEN = 1; // 1 = Serial port is enabled (configures RXx/DTx and TXx/CKx pins as serial port pins)
RCSTA1bits.CREN = 1; // 1 = Enables continuous receiver
PIE1bits.TX1IE = 0;
TXSTA1bits.TXEN = 1; // 1 = Transmit is enabled
return 1;
}
return 0;
}

void UART_Write(char data)
{
while(!TXSTA1bits.TRMT); // 1 = TSR is empty | 0 = TSR is full
// Transmit Shift Register Status bit waits until TSR is full
TXREG1 = data; // Tx is filled with data to transmit
LATC3 = ~LATC3; // LED Lights when data is transfered
}

void UART_Write_Text(char *text)
{
int i;
for(i=0;text!='';i++)
UART_Write(text);
}

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