C5502的UART传出数据位少的问题

只看该作者 · 2016-11-2 16:00

利用csl库进行配置和传输数据，应该是5位数据输出，但第一次传输只有后四位，第二次传输是5位但第一位变成第一次传输的最后一位不是我要的那位数据，附上程序和结果图，求大神指点

程序：

#include <stdio.h>
#include <csl.h>
#include <csl_pll.h>
#include <csl_chip.h>
#include <csl_irq.h>
#include <csl_gpt.h>
#include <csl_uart.h>
#include <csl_uarthal.h>

/* Reference start of interrupt vector table */
/* This symbol is defined in file, vectors.s55 */
extern void VECSTART(void);

Uint16 i = 0;
Uint16 j = 0;

//Uint8 STR_LEN=5;
#define STR_LEN 5
char pbuf[5]={0x11,0x22,0x33,0x44,0x55};
CSLBool returnFlag;
/* 通过定义宏来控制两个外围存储器映射的寄存器，从而实现对GPIO口的控制 */
#define GPIODIR (*(volatile ioport Uint16*)(0x3400))
#define GPIODATA (*(volatile ioport Uint16*)(0x3401))
/*UART的中断程序*/

UART_Setup mySetup = {
75, /* input clock freq */
UART_BAUD_38400, /* baud rate */
UART_WORD8, /* word length */
UART_STOP1, /* stop bits */
UART_DISABLE_PARITY, /* parity */
UART_FIFO_DISABLE, /*DISABLE */
UART_NO_LOOPBACK, /* Loop Back enable */
};

void main(void)
{
/* Initialize CSL library - This is REQUIRED !!! */
CSL_init();

/* PLL configuration structure used to set up PLL interface */
// 主频为300Mhz
PLL_setFreq(1, 0x3, 0, 1, 3, 3, 0);

// IRQ_setVecs((Uint32)(&VECSTART));
// Uart_Config();
/* Configure UART registers using setup structure */
UART_setup(&mySetup);

/* Enable all maskable interrupts */
// IRQ_globalEnable();
// IRQ_globalDisable();

returnFlag=UART_write(&pbuf[0],STR_LEN,0);

}

2万 · 2016-11-2 22:38

你连续发UART_write(&pbuf[0],STR_LEN,0);
看看出现什么规律

只看该作者 · 2016-11-3 09:14

zhangmangui 发表于 2016-11-2 22:38
你连续发UART_write(&pbuf[0],STR_LEN,0);
看看出现什么规律

仍然是第一位不为我自己的第一位是上一次发送的最后一位

只看该作者 · 2016-11-3 09:16

同时使用了csl中cslc5500里面的例程，仍然是错位
程序和结果如下：
#include <stdio.h>
#include <csl.h>
#include <csl_uart.h>
#include <csl_chiphal.h>
#include <csl_chipdat.h>
#include <csl_uartdat.h>
#include <csl_uarthal.h>

//---------Global constants---------
/* String length to be received and transmitted */
#define STR_LEN 83

//---------Global data definition---------
/* Buffer to be copied to clip board and sent to UART
using terminal emulator program
*/

char clipboardBuf[] = {
" <BEGIN>The quick brown fox jumped over lazy dog. This is simple UART test<END>"
};

/* User buffer that receives data */
char myBuf[STR_LEN];

/* UART setup structure */
UART_Setup mySetup = {
75,  /* input clock freq */
UART_BAUD_38400, /* baud rate */
UART_WORD8, /* word length */
UART_STOP1, /* stop bits */
UART_DISABLE_PARITY, /* parity */
UART_FIFO_DISABLE, /*DISABLE */
UART_NO_LOOPBACK, /* Loop Back enable */
};

//---------main routine---------
void main()
{
/* Loop counter and error flag */
Int16 i, error = 0;

/* Initialize CSL library */
CSL_init();

/* Configure UART registers using setup structure */
UART_setup(&mySetup);
// PLL_setFreq(1, 0x3, 0, 1, 3, 3, 0);

/* UART receiver reads data from PC COM port */
   if (UART_read(myBuf, STR_LEN, 0) == FALSE) {
         error = 1;
   }
   else {

         /* UART transmitter write data to PC COM port */
         if ((UART_write(myBuf, STR_LEN, 0)) == FALSE)
            error = 1;
   }

   /* Verify the recevied data for correctness */
   for (i = 0; i < STR_LEN-1; i++) {
         if (myBuf[i] != clipboardBuf[i]) {
            error = 1;
            break;
         }
   }

   /* Display PASS/FAIL status based on error flag */
   if (error)
         printf("\nTEST FAILED\n");
   else
         printf("\nTEST PASSED\n");
}