My code works, but as with the Max1112 my channels still "clash". When trying to read channel 0, if the input is placed on channel 0-7 it still reads the same input. Two different types of ADCs! What am I doing wrong? :-p

My ASM code I wrote is :


call time_delay_very_short
CLR P1.5

; P1.0 connects to SLK
; P1.1 connects to CS
; P1.4 connects to DIN
; P1.5 connects to DOUT


Sensor_0:

CLR P1.1
CALL Time_Delay_Very_Short
MOV A, #10001111b
MOV R6, #8

Sensor_0_loop:

RLC A
MOV P1.4, C
CALL Time_Delay_Very_Short
SETB P1.0
CALL Time_Delay_Very_Short
CLR P1.0
CALL Time_Delay_Very_Short

DJNZ R6, Sensor_0_loop

SETB P1.0
CALL Time_Delay_Very_Short
CLR P1.0
CALL Time_Delay_Very_Short
SETB P1.0
CALL Time_Delay_Very_Short
CLR P1.0
CALL Time_Delay_Very_Short

MOV R6, #8

Sensor_Input:

MOV C, P1.5
RLC A
SETB P1.0
CALL Time_Delay_Very_Short
CLR P1.0
CALL Time_Delay_Very_Short
DJNZ R6, Sensor_Input

MOV R6, #8

Extra_clocks:
MOV R6, 6
SETB P1.0
CALL Time_Delay_Very_Short
CLR P1.0
CALL Time_Delay_Very_Short
DJNZ R6, Extra_Clocks

SETB P1.1
CALL Time_Delay_Very_Short

MOV P2, A

jmp sensor_0

Time_Delay_Very_Short:

MOV R7, #50
Delay_Loop:
DJNZ R7, Delay_Loop


RET


End






Dennis Welbourn wrote:
-------------------------------
Hi Jeff,

I've frequently used National's ADC08034, a close cousin of the 0838. My code was written in C and optimized for timing. The part was easy to use, and works just like the datasheet says it should. I've got both the National and TI datasheets here, they work alike (we use TI as a second source).

What does your ADC code for this part look like?

Dennis