复位后从PIC串行端口无法获取正确的数据

你好，我正在使用PIC32 MX10F016B控制器作为我的应用程序。我已经为我的应用程序配置了PARIC和PC之间的串行通信UART2。实际上，在复位后，我从PIC接收字符数据作为字符垃圾，并且在一些事务之后也开始提供适当的数据。M使用P腻y查看PIC控制器串行端口的数据。请提供建议：SysCLK-40MHZUART波特率115200，数据位8，无流量控制，无奇偶校验，停止位1。编码：设备配置为SysCL/**DEVCFG0***/*Primamatlab配置调试＝Off-Trac-PracMA配置。IsSel-PGX1α-Prx1ApRiga配置文件PWP＝Off-PracMaMatg配置BWP＝Off-Trac-Matlab配置Cp= Off/**DEVCFG1***/AX-PrimaMatlab配置FFONC＝PrpLLL PrimaMac配置文件FSOSCEN＝α-PrimaMaun-ICOSO＝α-PrAPMA配置文件POSCMOD＝HS JTAGENG= Off-Y-PrimaMac配置{ Apple TracMeChangFigDe= Off/**DeFCFG2***/*PrimDig.FiLIPDIV= DIVIZ2O.PrimaMultAgFig.FPLLMUL= Muly20-PracMaMatg配置文件FPLLoDIV= DIVIO2/***DEVCFG3***/*PrimaMatlab配置工具USEID= 0xFFFFα-PrAPMA配置PMDL1WORE＝α-PrimaMaun-IOL1WORE＝πP RAGMA配置WDTPS＝PS1048RAGMA配置FiBidio＝Off-PracMaMig-COFIG FVBUSONIO= OFF Prima配置文件FCKSM＝CSECMUDART2初始化代码：无效PICUUARtiGIN（）{ UARTConfigure（UART2，UARTHYNEABLE LIN），UARTSetFifoMode（UART2，UARTHYBASTIOTHONTROXONTXNOTUNFULL UUTHARICATIONTRONTROXXXNOTSULL空），UARTSetLineControl（UART2，UARTSetDataRate（UART2，GETPurialAlcLoCK（114800））；UARTEnable（UART2，UARTHYNEABLE）FLAGS（UARTHULL外设“UARTHARX RXX UARTZTX”）；UART传输代码：无效SendDataBuffer（char *缓冲器，UIT32大小）{（size）{同时（）！UARTTransmitterIsReady（UART2）；UARTSendDataByte（UART2，*缓冲器）；缓冲器++；大小-；}同时（！）UART传输完成（UART2）；}谢谢和问候，Balasubramanian



      以下为原文

    Hi,

I am using the PIC32MX110F016B controller for my application.
I have configured the UART2 for serial communication between PIC and PC for my application.
Actually, I am receiving character data as character junk from PIC after reset and also It starts to give proper data after some transaction.

I am using putty to view the data from PIC controller serial port.
Please provide suggestions.

PIC configuration:

sysclk - 40MHz
UART baud rate - 115200, Data bits - 8, no flow control, no parity, stop bit - 1.

Coding:

Device configuration for sysclk

/*** DEVCFG0 ***/
#pragma config DEBUG = OFF
#pragma config JTAGEN = OFF
#pragma config ICESEL = ICS_PGx1
#pragma config PWP = OFF
#pragma config BWP = OFF
#pragma config CP = OFF

/*** DEVCFG1 ***/
#pragma config FNOSC = PRIPLL
#pragma config FSOSCEN = ON
#pragma config IESO = ON
#pragma config POSCMOD = HS
#pragma config OSCIOFNC = OFF
#pragma config FPBDIV = DIV_1
#pragma config WDTPS = PS1048576
#pragma config FWDTEN = OFF
#pragma config WINDIS = OFF


/*** DEVCFG2 ***/
#pragma config FPLLIDIV = DIV_2
#pragma config FPLLMUL = MUL_20
#pragma config FPLLODIV = DIV_2


/*** DEVCFG3 ***/
#pragma config USERID = 0xffff
#pragma config PMDL1WAY = ON
#pragma config IOL1WAY = ON
#pragma config FUSBIDIO = OFF
#pragma config FVBUSONIO = OFF
#pragma config FCKSM = CSECMD


UART2 INITIALIZATION Code:

void pic_uart_init()
{
   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(), 114800);
   UARTEnable(UART2, UART_ENABLE_FLAGS(UART_PERIPHERAL | UART_RX | UART_TX));
}

UART Transmission code:

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

Thanks & Regards,
Balasubramanian