Hi.
I working i2c with fx2lp.
My i2c chip address is 0x23. and i2c address 8bit and data 8bit.
I want write address 0x18 , data 0x37. So how do i make i2c command line?
Could you please let me know where is not correct and how can i fix?
Firmware :
BOOL DR_VendorCmnd( void )
{
BYTE addr;
BYTE fail;
BYTE count;
BYTE tmp;
WORD wValue;
WORD wIndex;
wValue = SETUPDAT[2];
wValue |= SETUPDAT[3]<<8;
wIndex = SETUPDAT[4];
wIndex |= SETUPDAT[5]<<8;
switch (SETUPDAT[1])
{
case VENDOR_CMD1:
EZUSB_InitI2C();
Cmd1[0] = 0x02;
while(EZUSB_WriteI2C(0x23 >> 1, 0x01, Cmd1) != I2C_OK) {
;
}
EZUSB_WaitForEEPROMWrite(0x23 >> 1);
Cmd1[0] = 0x37;
while(EZUSB_WriteI2C(0x18 >> 1, 0x01, Cmd1) != I2C_OK) {
;
}
EZUSB_WaitForEEPROMWrite(0x18 >> 1);
EZUSB_ReadI2C(0x18 >> 1, 0x01, Cmd1);
EP0BUF[0] = Cmd1[0];
EP0BCH = 0;
EP0BCL = 1;
EP0CS |= bmHSNAK; // Acknowledge handshake phase of device request
break;
default:
return(TRUE);
}
return(FALSE);
}
PC application side :
if(init_USB()){
ept0 = USBDevice->ControlEndPt;
ept0->Target = TGT_DEVICE;
ept0->ReqType = REQ_VENDOR;
ept0->Direction = DIR_FROM_DEVICE;
ept0->ReqCode = 0xDA;
ept0->Value = ii;
ept0->Index = 0x00;
unsigned char buf[2];
ZeroMemory(buf,2);
LONG buflen = 2;
ept0->Read(buf,buflen);
UpdateData(FALSE);
}
Please let me know where am i do fix ?
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