EEPW论坛

第一次玩pic32的mcu，MIPS内核

串口通信发送还是比较顺利

但是死活接收不到串口调试助手发送过来的数据

串口重映射比较坑爹，折腾一上午才有点头绪

代码：

/* 
 * File:   newmain.c
 * Author: Liao
 *
 * Created on 2014.3.23, 11:39
 */

#include <stdio.h>
#include <stdlib.h>
#include <plib.h>

// Configuration Bit settings
// SYSCLK = 40 MHz (8MHz Crystal/ FPLLIDIV * FPLLMUL / FPLLODIV)
// PBCLK = 40 MHz
// Primary Osc w/PLL (XT+,HS+,EC+PLL)
// WDT OFF
// Other options are don't care
//
#pragma config FPLLMUL = MUL_20, FPLLIDIV = DIV_2, FPLLODIV = DIV_1, FWDTEN = OFF
#pragma config POSCMOD = HS, FNOSC = PRIPLL, FPBDIV = DIV_1

#define SYS_FREQ                 (40000000L)

#define DESIRED_BAUDRATE        (9600)      // The desired BaudRate



int main(void)
{
    int    pbClk;
   unsigned char data;
 RPB3R = 1;//U1TX---RPB3 caution
//    U1RXR = 0;//U1RX---RPA2
    // Configure the device for maximum performance but do not change the PBDIV
    // Given the options, this function will change the flash wait states, RAM
    // wait state and enable prefetch cache but will not change the PBDIV.
    // The PBDIV value is already set via the pragma FPBDIV option above..
    pbClk=SYSTEMConfig(SYS_FREQ, SYS_CFG_WAIT_STATES | SYS_CFG_PCACHE);


    // Open UART2 with Receive and Transmitter enable.
   OpenUART1(UART_EN, UART_RX_ENABLE | UART_TX_ENABLE, pbClk/16/DESIRED_BAUDRATE/5-1);    // calculate actual BAUD generate value.
 mPORTASetPinsDigitalOut(BIT_0);    // Make RPA0 as output.
    mPORTASetBits(BIT_0);         // Set RPA0.
   


   putsUART1("*** UART Simple Application Example ***\r\n");
   putsUART1("*** Type some characters and observe echo and RA7 LED toggle  ***\r\n");

   while(1)
   {
      while(!DataRdyUART1()); /* Wait for data in the UARTRx. */

      data = (char)ReadUART1(); /* Read data from Rx. */

      while(BusyUART1()); /* Wait till the UART transmitter is free. */
      putcUART1(data); /* Write data into Tx. */

   };

   return 0;
}

 程序执行到

 while(!DataRdyUART1()); 这里就无法进行下一步了

似乎是等待不到接收的数据。