DSPF28035 硬件IIC查询方式写EEPROM时页写不成功（字节写可以）

只看该作者 · 2016-6-3 19:42

问题描述：之前用DSP自带的IIC通过硬件查询方式实现了IIC字节写入EEPROM 读取多个字节，后来想实现EEPROM的页写，用的是24C64 一页也就是32字节。
IIC写多个字节的函数定义：
void I2C_PageWrite(Uint16 MemoryAddress,Uint16* write_buffer,Uint16 Num_dates)
{
Uint16 i;
// Setup slave address
I2caRegs.I2CSAR=0x0050;
// Setup number of bytes to send
// number of data bytes to be send + Address
I2caRegs.I2CCNT =Num_dates+2;
// Setup memory address data to send
I2caRegs.I2CDXR =0x00;
I2caRegs.I2CDXR =MemoryAddress;
DELAY_US(50);
for(i=0;i<Num_dates;i++)
{
I2caRegs.I2CDXR=write_buffer[i];
}
I2caRegs.I2CMDR.all = 0x6E20;
}
函数调用方式
I2C_PageWrite(MemoryLowAddr,MsgBuffer,32);

请高手帮忙看一下是哪个地方出了问题

只看该作者 · 2016-7-28 14:50

Uint16 I2CA_WriteData(Uint16 *Wdata, Uint16 RomAddress, Uint16 number)
{
Uint16 i;
//总线是否忙
if (I2caRegs.I2CSTR.bit.BB == 1)
{
   return I2C_BUS_BUSY_ERROR;
}

//I2CDXR是否准备好接受数据
while(!I2C_xrdy());

I2caRegs.I2CSAR = 0x50;
I2caRegs.I2CCNT = number + 2;
I2caRegs.I2CMDR.all = 0x6E20;
//I2caRegs.I2CDXR = RomAddress;
I2caRegs.I2CDXR = RomAddress/256;
I2caRegs.I2CDXR = RomAddress%256;

for (i=0; i<number; i++)
{
   while(!I2C_xrdy());
   I2caRegs.I2CDXR = *Wdata;
   Wdata++;

   if (I2caRegs.I2CSTR.bit.NACK == 1)
      return I2C_BUS_BUSY_ERROR;
}
return I2C_SUCCESS;
}

这个写多字节的能给我参考下吗？我调试一直不成功，谢谢！

DSPF28035 硬件IIC查询方式写EEPROM时页写不成功（字节写可以）

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