Texas Instruments TLV1562 manual Software Overview, endif

Software Overview

* reset pending IRQs
IFR	= #1	; reset any old interrupt on pin INT0
.endif
.if INT0_DRIVEN
* enable Interrupt INT0
@IMR	= #01	; allow INT0
.endif

*enable global interrupt (this is required even if no IRQ routine is used

*by this program because the GoDSP debugger needs to do its backgroud interrupts)

INTM	= 0	; enable global IRQ
* initialize storage table for the ADC samples
AR7	= #(data_loc_A)	; point to first date location of the storage table
AR0	= #(num_data_A+data_loc_A ); AR0 points to table end
DP	= #AD_DP	;
@ADCOUNT= #(num_data_A)		; initialize ADCOUNT with the number of
		required samples
.if POLLING_DRV
AR5	= #(IFR)	; AR5 points to the IFR register (only for
		polling mode)
.endif
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 = #(CH1MONO_INTSINGLE_ENDCLK_INTERNALNO_CALIB_OP);

@CR1_SEND = #(NO_SW_PWDNNO_AUTO_PWDNNO_2COMPLEMENTNO_DEBUGRES_10_BITRD_CONV_START);

*change some of the possible modes by variation of the bit setting in the file header

*this next steps can be erased, if the user is running in only one special configuration

.if (R8BIT_RESOLUT)
@CR1_SEND ^= #RES_10_BIT	; clear bit for 10–Bit Resolution
@CR1_SEND = #RES_8_BIT	; set 8–Bit conversion mode
.elseif (R4BIT_RESOLUT)
@CR1_SEND ^= #RES_10_BIT	; clear bit for 10–Bit Resolution
@CR1_SEND = #RES_4_BIT	; set 8–Bit conversion mode
.endif
.if (EXTERNAL_CLOCK)
@CR0_SEND ^= #CLK_INTERNAL	; clear CLK_INTERNAL bit if one
@CR0_SEND = #CLK_EXTERNAL	; set CLK_EXTERNAL mode
.endif

Interfacing the TLV1562 Parallel ADC to the TMS320C54x DSP 49