关于cy8c29466串口调试问题

只看该作者 · 2017-4-1 10:04

CY8C29466用uart模块做串口通信，单片机能给上位机发送数据，上位机上不能发送数据给单片机。求大神指教。程序如下：
#include <m8c.h>
#include "PSoCAPI.h"

void main(void)
{
char * strPtr;                      // Parameter pointer

UART_CmdReset();                   // Initialize receiver/cmd
                                       // buffer
UART_IntCntl(UART_ENABLE_RX_INT);    // Enable RX interrupts

Counter8_WritePeriod(155);          // Set up baud rate generator
Counter8_WriteCompareValue(77);
Counter8_Start();                   // Turn on baud rate generator

UART_Start(UART_PARITY_NONE);       // Enable UART

M8C_EnableGInt ;                   // Turn on interrupts

UART_CPutString("\r\nWelcome to PSoC UART test program. V1.1 \r\n");

while(1) {
   if(UART_bCmdCheck()) {                   // Wait for command
if(strPtr = UART_szGetParam()) {    // More than delimiter"
         UART_CPutString("Found valid command\r\nCommand =>");
UART_PutString(strPtr);          // Print out command
UART_CPutString("<\r\nParamaters:\r\n");
while(strPtr = UART_szGetParam()) { // loop on each parameter
   UART_CPutString(" <");
   UART_PutString(strPtr);       // Print each parameter
   UART_CPutString(">\r\n");
}
}
UART_CmdReset();                         // Reset command buffer
}
}
}
配置// Counter8  (placed in DBA03)
//    Clock       48MHz
//    Enable       High
//    Output       None
//    Period       155
//    CompareValue  78
//    CompareType Less Than Or Equal
//    InterruptType Terminal Count
//
// Using the settings above the UART baud rate can be calculated.
// baud rate = 48MHz / ((Period+1) * (over Sample rate))
//             = 48MHz / ((155+1) * 8)
//             = 38.4 kBaud
//
// The settings for the UART are as follows:
//
// UART  (Placement RX => DAC06, TX => DCA07)
//    Clock             DBA03 Broadcast
//    RX Input          Global_IN_5
//    TX Output       Global_OUT_7
//    TX InterruptMode TXComplete
//    RxCmdBuffer       Enable
//    RxBufferSize    16 Bytes
//    CommandTerminator  13    (CR)
//    Param_Delimiter 32    (space)
//    IgnoreCharsBelow 32    (Ignore all chars below space, except CR)
均是按照例程配置但是不能用PC给单片机发命令。硬件连接无问题 pc上能打印Welcome to PSoC UART test program. V1.1 单PC发送无效