我在进行完写操作后，STP置1了后，为何不能自动清零，还保持为1啊
I2caRegs.I2CMDR.all = 0x6E20;-//----当运行完这一步后，I2caRegs.I2CMDR.bit.STP应该是自动清零，我在程序中为何没有自动清零啊， 2caRegs.I2CMDR.bit.STP 保持为1
Uint16 I2CA_WriteData(struct I2CMSG *msg)
{
Uint16 i;
// Wait until the STP bit is cleared from any previous master communication.
// Clearing of this bit by the module is delayed until after the SCD bit is
// set. If this bit is not checked prior to initiating a new message, the
// I2C could get confused.
if (I2caRegs.I2CMDR.bit.STP == 1)
{
return I2C_STP_NOT_READY_ERROR;
}
// Setup slave address
I2caRegs.I2CSAR = msg->SlaveAddress;
// Check if bus busy
if (I2caRegs.I2CSTR.bit.BB == 1)
{
return I2C_BUS_BUSY_ERROR;
}
// Setup number of bytes to send
// MsgBuffer + Address
I2caRegs.I2CCNT = msg->NumOfBytes+2;
// Setup data to send
I2caRegs.I2CDXR = msg->MemoryHighAddr;
I2caRegs.I2CDXR = msg->MemoryLowAddr;
// for (i=0; i<msg->NumOfBytes-2; i++)
for (i=0; i<msg->NumOfBytes; i++)
{
I2caRegs.I2CDXR = *(msg->MsgBuffer+i);
}
// Send start as master transmitter
I2caRegs.I2CMDR.all = 0x6E20;-//----当运行完这一步后，I2caRegs.I2CMDR.bit.STP应该是自动清零，我在程序中为何没有自动清零啊， //////////I2caRegs.I2CMDR.bit.STP == 1
return I2C_SUCCESS;
}
