Kinetis Microcontrollers中的主题 How to use I2C2_SendAcknowledge()

How to use I2C2_SendAcknowledge()

jikehe — Tue, 03 Dec 2013 05:08:45 GMT

How to use I2C2_SendAcknowledge()

Re: How to use I2C2_SendAcknowledge()

BlackNight — Tue, 03 Dec 2013 06:00:55 GMT

For example:

res = I2C2_SendAcknowledge(myDevice, LDD_I2C_ACK_BYTE);

From the help text:

SendAcknowledge - This method send acknowledge/not acknowledge for current receiving byte. This method is available only if control acknowledge bit is enabled.

ANSIC prototype:

LDD_TError SendAcknowledge(LDD_TDeviceData *DeviceDataPtr, LDD_I2C_TAckType AckType)

DeviceDataPtr: Pointer to LDD_TDeviceData - Device data structure pointer returned by Init method.
AckType:LDD_I2C_TAckType - Specify type of receiving byte answer.
LDD_I2C_ACK_BYTE - The values of acknowledge bit correspond to successful byte receiving (receiver send ACK bit value automatically according the I2C specification).
LDD_I2C_NACK_BYTE - The values of acknowledge bit correspond to not successful byte receiving (receiver send NACK bit value and terminate reception).
Return value:LDD_TError - Error code, possible codes:
ERR_OK - OK
ERR_DISABLED - The device is disabled.
ERR_SPEED - This device does not work in the active clock configuration.
ERR_PARAM_MODE - Invalid acknowledge type answer.

Additionally, you get help with 'Help on Component':

Getting Help on Processor Expert Components | MCU on Eclipse

Re: How to use I2C2_SendAcknowledge()

jikehe — Tue, 03 Dec 2013 06:41:36 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