i2c连续读取程序mma8451

Dark_Knight

读取数据不正确，求指明错

void geta()
{
u8 c;

I2C0_C1|=I2C_C1_TX_MASK;
I2C0_C1|=I2C_C1_MST_MASK;

I2C0_D=0x38;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
I2C0_D=0x01;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;

I2C0_C1|=I2C_C1_RSTA_MASK;

I2C0_D=0x39;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;

I2C0_C1 &= ~I2C_C1_TXAK_MASK;
I2C0_C1 &= ~I2C_C1_TX_MASK;

c=I2C0_D;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
mmax=I2C0_D;
mmax=mmax<<8;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
c=I2C0_D;
mmax|=c;

while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
mmay=I2C0_D;
mmay<<=8;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
mmay|=I2C0_D;

while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
mmaz=I2C0_D;
mmaz<<=8;
while((I2C0_S&&I2C_S_IICIF_MASK)==0);
I2C0_S|= I2C_S_IICIF_MASK;
mmaz|=I2C0_D;

I2C0_C1&=~I2C_C1_MST_MASK;
I2C0_C1&=~I2C_C1_TX_MASK;
}

公西听然

这个不好说，直接移植别人的代码看看

Dark_Knight

公西听然 发表于 2014-3-13 23:23
这个不好说，直接移植别人的代码看看

貌似没有连续读取N个字节的函数