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TMS320C6748: TMS320C6748使用UPP发送,却没有数据

Part Number: TMS320C6748

 使用这个芯片与fpga通过uppA进行通信,dsp这把发送数据,fpga接收数据,但是每次都只有时钟信号没有数据。

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/*
* main.c
*/
#include <stdio.h>
#include <c6x.h>
#include "soc_C6748.h" // DSP C6748
#include "psc.h" //
#include "interrupt.h" // DSP C6748
#include "uartStdio.h" //
#include "upp.h" //
#include "dspcache.h"
//
volatile int upp_error_count = 0;
volatile int upp_interrupt_count = 0;
// 使
#define CacheEnabled 1
//
#define upp_line_size (128)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

 这个000e是我uppA在nand flash状态下的值