In SX Microcontrollers, SX/B Compiler and SX-Key Tool, RS_Jim wrote:

Micky,
I don't see you using a pin for chip select, I believe that is pin 4.  You must take CS low before you can address the chip.  Next Jonny mac gave me a clue in programing for an ADC and that was use a command of clock = 0 before you start getting information to and from the ADC the following is the func code that works for me.

' -------------------------------------------------------------------------
' Read the Analog/digital converter 

ADC_CS  PIN OUTPUT
ADC_CLK PIN OUTPUT
ADC_DIO PIN INPUT PLP

Func READ_ADC
	low	ADC_CS
	ADC_CLK = 0
	NOP
 	SHIFTIN	ADC_DIO,ADC_CLK,MSBPOST,tmpB1\9,4

	
	high	ADC_CS
		tmpW1_msb = 0
		tmpW1_lsb = tmpB1
		Return   tmpW1
ENDFUNC

I had no luck with it until I put the clock = 0 after the Chip select low.
maybe this will help!
RS_Jim

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