topic Re: How to use I2c in Kinetis Microcontrollers

How to use I2c

jikehe — Tue, 03 Dec 2013 08:03:50 GMT

volatile bool DataReceivedFlg = FALSE;

volatile bool DataTransmittedFlg = FALSE;

uint8_t OutData[4] = {0x00U, 0x01U, 0x02U, 0x03U};

uint8_t InpData[4];

LDD_TError Error;

LDD_TDeviceData *MyI2CPtr;

int main(void)

{

PE_low_level_init();

MyI2CPtr = I2C2_Init(NULL);

while(1)

{

Error = I2C2_SlaveReceiveBlock(MyI2CPtr, &InpData, 4U);

if(TRUE == DataReceivedFlg)

{

I2C2_SendAcknowledge(MyI2CPtr, LDD_I2C_ACK_BYTE);

DataReceivedFlg = FALSE;

}

no ack signal

Re: How to use I2c

perlam_i_au — Tue, 03 Dec 2013 21:37:09 GMT

Here you can find different Application notes for use I2C, could you be a bit specific about what are you trying to do? or at least could you mention an error or problem, I could search specific solutions, with more information.

Please tell me if this is useful. :smileygrin:

Re: How to use I2c

Robin_Shen — Thu, 05 Dec 2013 01:26:30 GMT

Do you want send NACK signal?

I2C2_SendAcknowledge(MyI2CPtr, LDD_I2C_NACK_BYTE);

Re: How to use I2c

jikehe — Thu, 05 Dec 2013 02:26:59 GMT

I use mk10dx256vlq10 mcu, I use codewarrior 10.4 tool, I2C_LDD component Settings->Mode selection selected SLAVE.

volatile bool DataReceivedFlg = FALSE;

volatile bool DataTransmittedFlg = FALSE;

uint8_t OutData[4] = {0x00U, 0x01U, 0x02U, 0x03U};

uint8_t InpData[4];

LDD_TError Error;

LDD_TDeviceData *MyI2CPtr;

int main(void)

{

PE_low_level_init();

MyI2CPtr = I2C2_Init(NULL);

while(1)

{

Error = I2C2_SlaveReceiveBlock(MyI2CPtr, &InpData, 4U);

if(TRUE == DataReceivedFlg)

{

I2C2_SendAcknowledge(MyI2CPtr, LDD_I2C_ACK_BYTE);

DataReceivedFlg = FALSE;

}

no ack signal

Re: How to use I2c

Robin_Shen — Mon, 09 Dec 2013 01:05:01 GMT

I am sorry , I can't understand your problem clearly.

Can you describe the problem clearly?

Do you want find where you can enable "I2C2_SendAcknowledge" function in CodeWarrior with PE?