I2C CONFUSION, Help needed please

[FromTheCockpit]

By the way, the device sends the ACK, or acknowledges, by holding the Data line LOW on the 9th clock cycle. The PIC will see this and continue to send data.

How do I implement this, like this below?

Main:
High Led : Pause 500: Low Led : PAUSE 500
	Addr=$36
	I2CWRITE SDA,SCL,ADDR,LOC
	Addr=$37 : pause 10                    ' OR If SDA=1 then main 
	I2CREAD SDA,SCL,loc,[VALUE],Fail
	PAUSE 25
	DEBUG  HEX Value,13,10
	PAUSE 250
	DEBUG "Done....",13,10
WHILE 1 : WEND
Goto Main

Fail:
	toggle portc.2
goto main

[LinkMTech]

Just notice the address missing on the Read function.
Moved the Fail label after Write to test this part first. This will let you know if the Write address was recognized so the Pause 10 is not needed.

Main:
High Led : Pause 500: Low Led : PAUSE 500
	Addr=$36
	I2CWRITE SDA,SCL,ADDR,LOC, Fail  ' Test here first
	Addr=$37 ': pause 10                    ' OR If SDA=1 then main 
	I2CREAD SDA,SCL,ADDR,loc,[VALUE] ',Fail
	PAUSE 25
	DEBUG  HEX Value,13,10
	PAUSE 250
	DEBUG "Done....",13,10
WHILE 1 : WEND
Goto Main

Fail:
	toggle portc.2
goto main

[FromTheCockpit]

Checked it. It fails on the first write statement.

[FromTheCockpit]

Fails on the second statement if I swap the values of Addr. i.e. First $37, second Addr $36. First one goes fine.

[LinkMTech]

Checked it. It fails on the first write statement.

Okay let's fix that first.
Put brackets around the Loc as shown in the PBP manual to see if that helps.

Main:
High Led : Pause 500: Low Led : PAUSE 500
	Addr=$36
	I2CWRITE SDA,SCL,ADDR,[LOC],Fail  ' Test here first
	Addr=$37 ': pause 10                    ' OR If SDA=1 then main 
	I2CREAD SDA,SCL,ADDR,[LOC,VALUE] ',Fail
	PAUSE 25
	DEBUG  HEX Value,13,10
	PAUSE 250
	DEBUG "Done....",13,10
WHILE 1 : WEND
Goto Main

Fail:
	toggle portc.2
goto main

[FromTheCockpit]

I did exactly the same as above and the sequence completed fine. BUT the values are not consistent with the datasheet, I should get '$2E' from location 0, but WHATEVER location I try to read, I am getting '$FF'

[FromTheCockpit]

Have a look at my real term serial monitor. I am actually getting a lot of unexpected data which I don't understand how is getting stored in just one byte. Though among all this, I can see '2E' (but it is swapped around so 'E2'). Note sure if I am trying to convince myself or the data is rubbish.

[FromTheCockpit]

Better in nibble setting. I can see '2E' repeated a few times.