From 15a357a03e996cad5f7499e73d7ac52069804576 Mon Sep 17 00:00:00 2001 From: Matt Strapp Date: Wed, 5 Feb 2020 10:37:54 -0600 Subject: Do lab 2A --- Lab 2.X/Lab2A.s | 142 +++++++++++++++++++++++++++----------------------------- 1 file changed, 68 insertions(+), 74 deletions(-) (limited to 'Lab 2.X') diff --git a/Lab 2.X/Lab2A.s b/Lab 2.X/Lab2A.s index 4f7e189..fc9f30c 100644 --- a/Lab 2.X/Lab2A.s +++ b/Lab 2.X/Lab2A.s @@ -1,74 +1,68 @@ - -.include "xc.inc" ; required "boiler-plate" (BP) - -;the next two lines set up the actual chip for operation - required -config __CONFIG2, POSCMOD_EC & I2C1SEL_SEC & IOL1WAY_OFF & OSCIOFNC_ON & FCKSM_CSECME & FNOSC_FRCPLL & SOSCSEL_LPSOSC & WUTSEL_FST & IESO_OFF -config __CONFIG1, WDTPS_PS1 & FWPSA_PR32 & WINDIS_OFF & FWDTEN_OFF & BKBUG_ON & GWRP_ON & GCP_ON & JTAGEN_OFF - - .bss ; put the following labels in RAM -counter: - .space 2 ; a variable that takes two bytes (we won?t use - ; it for now, but put here to make this a generic - ; template to be used later). -stack: - .space 32 ; this will be our stack area, needed for func calls - -.text ; BP (put the following data in ROM(program memory)) - -;because we are using the C compiler to assemble our code, we need a "_main" label -;somewhere. (There's a link step that looks for it.) -.global _main ;BP -;your functions go here - -_main: - - bclr CLKDIV,#8 ;BP - nop - ;; --- Begin your main program below here --- - - - mov #0x9fff,w0 - mov w0,AD1PCFG ; Set all pins to digital mode - mov #0b1111111111111110,w0 - mov w0,TRISA ; set pin RA0 to output - mov #0x0001,w0 - mov w0,LATA ; set pin RA0 high - call foreverLoop - -wait_24cycles: - ; 2 cycles for function call - repeat #17 ; 1 cycle to load and prep - nop ; 17+1 cycles to execute NOP 18 times - return ; 3 cycles for the return - -wait_32cycles: ; 2 - repeat #24 ; 1 - nop ; 25+1 cycles = 26 - return ; 3 - -delay_100us: - repeat #1593 - nop - return - -delay_1ms: - repeat #15993 - nop - return - -foreverLoop: - - call wait_24cycles ; 24 cycles - clr LATA ; set pin RA0 low = 1 cycle - call wait_32cycles ; 32 cycles - inc LATA ; set pin RA0 high = 1 cycle - bra foreverLoop - -; nop -; nop -; clr LATA -; repeat #4 -; nop -; inc LATA -; bra foreverLoop -.end + +.include "xc.inc" ; required "boiler-plate" (BP) + +;the next two lines set up the actual chip for operation - required +config __CONFIG2, POSCMOD_EC & I2C1SEL_SEC & IOL1WAY_OFF & OSCIOFNC_ON & FCKSM_CSECME & FNOSC_FRCPLL & SOSCSEL_LPSOSC & WUTSEL_FST & IESO_OFF +config __CONFIG1, WDTPS_PS1 & FWPSA_PR32 & WINDIS_OFF & FWDTEN_OFF & BKBUG_ON & GWRP_ON & GCP_ON & JTAGEN_OFF + + .bss ; put the following labels in RAM +counter: + .space 2 ; a variable that takes two bytes (we won?t use + ; it for now, but put here to make this a generic + ; template to be used later). +stack: + .space 32 ; this will be our stack area, needed for func calls + +.text ; BP (put the following data in ROM(program memory)) + +;because we are using the C compiler to assemble our code, we need a "_main" label +;somewhere. (There's a link step that looks for it.) +.global _main ;BP +;your functions go here + +_main: + + bclr CLKDIV,#8 ;BP + nop + ;; --- Begin your main program below here --- + + + mov #0x9fff,w0 + mov w0,AD1PCFG ; Set all pins to digital mode + mov #0b1111111111111110,w0 + mov w0,TRISA ; set pin RA0 to output + mov #0x0001,w0 + mov w0,LATA ; set pin RA0 high + call foreverLoop + +wait_24cycles: + ; 2 cycles for function call + repeat #17 ; 1 cycle to load and prep + nop ; 17+1 cycles to execute NOP 18 times + return ; 3 cycles for the return + +wait_32cycles: ; 2 + repeat #24 ; 1 + nop ; 25+1 cycles = 26 + return ; 3 + +delay_100us: + repeat #1593 + nop + return + +delay_1ms: + repeat #15993 + nop + return + +foreverLoop: + + call wait_24cycles ; 24 cycles + clr LATA ; set pin RA0 low = 1 cycle + call wait_32cycles ; 32 cycles + inc LATA ; set pin RA0 high = 1 cycle + bra foreverLoop + + +.end -- cgit v1.2.3