Texas Instruments TLV1562 - Manual (Page 94)

Software Overview
88 SLAA040
* initialize storage table for the ADC samples
DP = #AD_DP ;
A += #–1 ; decrement A
@CH_NO = A ; read number of sampling channel
A = @ADMEM
AR7 = A ; point to first date location of the storage table
A = @ADCOUNT ; AR0 points to table end
B = @ADMEM
A += B
AR0 = A ; AR0 is loaded with last save location
AR5 = #(IFR) ; AR5 points to the IFR register (only for polling mode)
DP = #AD_DP
@ZERO = #00000 ; set the dummy send value
* initialize the send values to set–up the two programmable register of the ADC
@CR0_SEND = #(MONO_INT|SINGLE_END|CLK_INTERNAL|NO_CALIB_OP);
A = @CR0_SEND
A |= @CH_NO
@CR0_SEND = A
@CR1_SEND = #(NO_SW_PWDN|NO_AUTO_PWDN|NO_2COMPLEMENT|NO_DEBUG|RES_10_BIT|CST_CONV_START);
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* ADC_INI:
* set ADC register CR0/CR1
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ADC_INI:
* write CR1 (to reset old CSTART mode initialization, because otherwise, the ADC never sets
* back its int– pin to show a sample is available:
@CR_PROBLEM = #(SW_PWDN|NO_AUTO_PWDN|NO_2COMPLEMENT|NO_DEBUG|RES_10_BIT|RD_CONV_START);
port(ADC) = @CR_PROBLEM ; Address decoder sets CS low,
; WR– low and send CR_PROBLEM value to the ADC
NOP ; wait for tW(CSH)=50ns
* write CR1:
port(ADC) = @CR1_SEND ; Address decoder sets CS low,
; WR– low and send CR1 value to the ADC
port(DEACTIVE) = @ZERO ; deselect ADC (CS high)
NOP ; wait for tW(CSH)=50ns
* write CR0
port(ADC) = @CR0_SEND ; send CR0 value to the ADC
STEP1: port(DEACTIVE) = @ZERO ; deselect ADC (CS high)
NOP ;
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* ADC_mono_IRQ_Start:
* read samples and store them into memory
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