FTDI LibFT4222 - Page 62

Application Note
AN_329 User Guide For LibFT4222
Version 1.5
Document Reference No.: FT_001060 Clearance No.: FTDI#406
61
Product Page
Document Feedback Copyright © Future Technology Devices International Limited
Supported Chip:
FT4222 chip version
Supported
FT4222 Rev A
YES
FT4222 Rev B
YES
FT4222 Rev C
YES
FT4222 Rev D
YES
Summary:
Reset the I
2
C slave device. This function will maintain the original i2c slave setting and clear all
cache in the device. D2XX has similar function (FT_PURGE) but strongly recommend to use
FT4222_I2CSlave_Reset
Parameters:
ftHandle
Handle of the device.
Return Value:
FT4222_OK if successful, otherwise the return value is an FT error code.
Error code:
FT4222_DEVICE_NOT_OPENED: The initialization API is not called.
FT4222_IS_NOT_I2C_MODE: The device is not in i2c slave mode
Prerequisite:
FT4222_I2CSlave_Init
Example:
FT_HANDLE ftHandle = NULL;
FT_STATUS ftStatus;
FT4222_STATUS ft4222Status;
ftStatus = FT_Open(0, &ftHandle);
if (FT_OK != ftStatus)
{
// open failed
return;
}
// initial i2c slave
ft4222Status = FT4222_I2CSlave_Init(ftHandle);
if (FT4222_OK != ft4222Status)
{
// i2c slave init failed
return;
}
ft4222Status = FT4222_I2CSlave_Reset(ftHandle);
if (FT4222_OK != ft4222Status)
{
// reset i2c slave failed
return;
}
FT4222_UnInitialize(ftHandle);
FT_Close(ftHandle);