iic中断通信问题

zhaoleiray · 发表于 2014-2-25 17:21:21

void I2C1_EV_IRQHandler(void)

{

i2cEvent = I2C_GetLastEvent(I2C1);

i2cEventGroup[i2cEventCounter++] = i2cEvent;

switch (i2cEvent)

{

case I2C_EVENT_MASTER_MODE_SELECT: /* EV5 */

if(Direction == Transmitter)

{

I2C_Send7bitAddress(I2C1, I2C1_SLAVE_ADDRESS7, I2C_Direction_Transmitter);

}

else

{

I2C_Send7bitAddress(I2C1, I2C1_SLAVE_ADDRESS7, I2C_Direction_Receiver);

}

break;

case I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED:

I2C_SendData(I2C1, i2cSendBuf[i2cSendCount++]);

if(i2cSendLen == 1)

I2C_ITConfig(I2C1, I2C_IT_BUF, DISABLE);

break;

case I2C_EVENT_MASTER_BYTE_TRANSMITTING: /* Without BTF, EV8 */

if(i2cSendCount < (i2cSendLen + 1))

{

I2C_SendData(I2C1, i2cSendBuf[i2cSendCount++]);

}

else

{

I2C_ITConfig(I2C1, I2C_IT_BUF, DISABLE);

}

break;

case I2C_EVENT_MASTER_BYTE_TRANSMITTED: /* With BTF EV8-2 */

if(bSubMenu_Rd == 0)

{

I2C_GenerateSTOP(I2C1, ENABLE);

while(I2C_GetLastEvent(I2C1) == I2C_EVENT_MASTER_BYTE_TRANSMITTED)

;

wrTaskState = 1;

}

else

{

Direction = Receiver;

// I2C_ITConfig(I2C1, I2C_IT_BUF, ENABLE);

I2C_GenerateSTART(I2C1, ENABLE);

}

I2C_ITConfig(I2C1, I2C_IT_BUF, ENABLE);

break;

/* Master Receiver -------------------------------------------------------*/

case I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED:

if(i2cRevLen == 1)

{

I2C_AcknowledgeConfig(I2C1, DISABLE);

I2C_GenerateSTOP(I2C1, ENABLE);

// I2C_ITConfig(I2C1, I2C_IT_BUF, DISABLE);

}

break;

case I2C_EVENT_MASTER_BYTE_RECEIVED:

i2cRevBuf[i2cRevCount++] = I2C_ReceiveData (I2C1);

if(i2cRevCount == (i2cRevLen - 1))

{

I2C_AcknowledgeConfig(I2C1, DISABLE);

I2C_GenerateSTOP(I2C1, ENABLE);

}

else if(i2cRevCount == i2cRevLen)

{

rdTaskState = 1;

}

else

;

break;

default:

break;

}

/**

void Write24C01(void)

{

u8 i;

i2cSendLen = 4;//·???4×???????

i2cSendCount = 0;

bSubMenu_Rd = 0;

Direction = Transmitter;

i2cSendBuf[0] = I2C_ADDRESS7;

for(i = 1;i < 5;i++)

i2cSendBuf = i;

while((I2C1 -> SR2 & 0x02))//????

;

I2C_GenerateSTART(I2C1, ENABLE);

}

void Read24C01(void)

{

i2cSendLen = 1;//???·

i2cSendCount = 0;

i2cRevLen = 4;

i2cRevCount = 0;

Direction = Transmitter; //??·??????·

i2cSendBuf[0] = I2C_ADDRESS7;

bSubMenu_Rd = 1;

while((I2C1 -> SR2 & 0x02))

;

I2C_GenerateSTART(I2C1, ENABLE);

}