28335外部接口XINTF无法写入数据

只看该作者 · 2016-4-13 20:29

这两天在学DSP28335的XINTF，用的TI官方的默认配置。
void InitXintf(void)
{
EALLOW;
XintfRegs.XINTCNF2.bit.XTIMCLK = 1;
// No write buffering
XintfRegs.XINTCNF2.bit.WRBUFF = 0;
// XCLKOUT is enabled
XintfRegs.XINTCNF2.bit.CLKOFF = 0;
// XCLKOUT = XTIMCLK/2
XintfRegs.XINTCNF2.bit.CLKMODE = 1;

XintfRegs.XTIMING0.bit.XWRLEAD = 3;
XintfRegs.XTIMING0.bit.XWRACTIVE = 7;
XintfRegs.XTIMING0.bit.XWRTRAIL = 3;
// Zone read timing
XintfRegs.XTIMING0.bit.XRDLEAD = 3;
XintfRegs.XTIMING0.bit.XRDACTIVE = 7;
XintfRegs.XTIMING0.bit.XRDTRAIL = 3;

// double all Zone read/write lead/active/trail timing
XintfRegs.XTIMING0.bit.X2TIMING = 1;

// Zone will sample XREADY signal
XintfRegs.XTIMING0.bit.USEREADY = 1;
XintfRegs.XTIMING0.bit.READYMODE = 1;  // sample asynchronous

XintfRegs.XTIMING0.bit.XSIZE = 3;

XintfRegs.XTIMING6.bit.XWRLEAD = 3;
XintfRegs.XTIMING6.bit.XWRACTIVE = 7;
XintfRegs.XTIMING6.bit.XWRTRAIL = 3;
// Zone read timing
XintfRegs.XTIMING6.bit.XRDLEAD = 3;
XintfRegs.XTIMING6.bit.XRDACTIVE = 7;
XintfRegs.XTIMING6.bit.XRDTRAIL = 3;

// double all Zone read/write lead/active/trail timing
XintfRegs.XTIMING6.bit.X2TIMING = 1;

// Zone will sample XREADY signal
XintfRegs.XTIMING6.bit.USEREADY = 1;
XintfRegs.XTIMING6.bit.READYMODE = 1;  // sample asynchronous


XintfRegs.XTIMING6.bit.XSIZE = 3;

XintfRegs.XTIMING7.bit.XWRLEAD = 3;
XintfRegs.XTIMING7.bit.XWRACTIVE = 7;
XintfRegs.XTIMING7.bit.XWRTRAIL = 3;
// Zone read timing
XintfRegs.XTIMING7.bit.XRDLEAD = 3;
XintfRegs.XTIMING7.bit.XRDACTIVE = 7;
XintfRegs.XTIMING7.bit.XRDTRAIL = 3;

// double all Zone read/write lead/active/trail timing
XintfRegs.XTIMING7.bit.X2TIMING = 1;

// Zone will sample XREADY signal
XintfRegs.XTIMING7.bit.USEREADY = 1;
XintfRegs.XTIMING7.bit.READYMODE = 1;  // sample asynchronous

XintfRegs.XTIMING7.bit.XSIZE = 3;

XintfRegs.XBANK.bit.BANK = 7;
XintfRegs.XBANK.bit.BCYC = 7;
EDIS;

InitXintf16Gpio();

asm(" RPT #7 || NOP");
}

定义了三个地址如下：
#define ZONE7 (*((volatile  Uint16 *)0x200000))
#define ZONE6_1 (*((volatile  Uint16 *)0x100001))
#define    VO0 (*((volatile  Uint16 *)0x4010))

然后在主程序中分别给他们赋值：
   ZONE7 = 0x7532;
   ZONE6_1 = 0x4321;
   VO0 = 0x4567;
结果发现只有ZONE7对应地址的存储器写入了数据，而zone0和zone6无法写入。
所以想请问一下是不是我这样操作有问题？该如何正确操作这3个zone？