如何通过PIC UART读取数据帧PC串行

Question

我正在尝试接收一个包含数据从PC到通过UART PIC12F1572的帧我的目标是制作一个代码来接收数据，例如 RGBFF0000，即 RGB LED 配置。任何人都知道如何做到这一点。我已经做了一些代码，但我想让它在逻辑上正确。我使用 PIC12F1572 和 MPLAB V3.50代码，更正和提示受到高度赞赏提前致谢这是我的代码：

#include "mcc_generated_files/mcc.h"
#define AT_COMMAND_BUFFER_SIZE 256

uint8_t buffer[AT_COMMAND_BUFFER_SIZE];
uint8_t i = 0;
uint8_t receivedByte ;
/*
                         Main application
 */
/*-----------------R.E.C.E.I.V.E.R PIC------------*/
void main(void)
{
    // initialize the device
    SYSTEM_Initialize();

    EUSART_Write(0x61);
    INTERRUPT_GlobalInterruptEnable();      // Enable the Global Interrupts
    INTERRUPT_PeripheralInterruptEnable();     // Enable the Peripheral Interrupts
    // Disable the Global Interrupts
    //INTERRUPT_GlobalInterruptDisable();
    // Disable the Peripheral Interrupts
    //INTERRUPT_PeripheralInterruptDisable();
    while (1)
    {
     if ( UART_DataReady() )            // If data is received,
        {
          receivedByte = EUSART_Read();
          for (i = 0; i<20 ; i++)
          {
            if ( receivedByte == '')
            {
                //My pb is how to start to check the data received over UART RX
            } 

          }
        }
    }
}

Answer 1

您在每个命令的末尾发送新行字符n，因此读取recievedByte最多n并将其存储在新数组中。然后设置一个标志以显示有效的命令接收。处理新命令后，清除此标志。

 if ( UART_DataReady() )            // If data is received,
    {
        receivedByte = EUSART_Read();
        for (i = 0; i<20 ; i++)
        {
            if ( receivedByte != 'n')
            {
                data[i] = receivedByte;
            }
            else{
                data[i] = '';
                data_flag = 1;
                break;
            }
        }
    }

Answer 2

这是答案：

#include "mcc_generated_files/mcc.h"
#include <stdlib.h>
#include <stdio.h>
#include "atoh.h"
#include "LED.h"
#define _XTAL_FREQ 16000000
#define FRAMESIZE 20
void main(void)
{
   uint8_t data,i,j,got_char;

   uint8_t value;
   uint8_t RX_Buffer[FRAMESIZE];

    // initialize the device
    SYSTEM_Initialize();
    INTERRUPT_GlobalInterruptEnable();                       // Enable the Global Interrupts
    INTERRUPT_PeripheralInterruptEnable();                   // Enable the Peripheral Interrupts
  while (1)
 {
        if (EUSART_DataReady)
        {
            for (i = 0; i<FRAMESIZE; i++)
            {
                RX_Buffer[i] = EUSART_Read();
                if (RX_Buffer[i] == 'n')
                {
                  break;
                }
            }
            RX_Buffer[18] = 'n';
            RX_Buffer[i] = 0;
            EUSART_WriteAnArrayOfBytes(RX_Buffer);
        }