MSP430 Assembly Code Examples from Class - Revision history

Frohro: /* Solutions to Exam 1b from 2015 */

2016-11-07T03:56:52Z

Solutions to Exam 1b from 2015

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              .short  RESET
 </nowiki>
 ====Solutions to Exam 1b from 2015====

Frohro: /* Stack Manipulation Demonstration */

2016-11-07T03:56:25Z

Stack Manipulation Demonstration

@@ Line 228: / Line 228: @@
 </nowiki>
 ====Blink the LED Using Timer TA0 and Interrupts====
   <nowiki>

Frohro: /* Solutions to Exam 1b from 2015 */

2016-11-06T19:15:36Z

Solutions to Exam 1b from 2015

← Older revision		Revision as of 12:15, 6 November 2016
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	pop.w r13		pop.w r13
	ret		ret
	~~;-------------------------------------------------------------------------------~~
	~~; Main loop here~~
	~~;-------------------------------------------------------------------------------~~



	;-------------------------------------------------------------------------------		;-------------------------------------------------------------------------------

Frohro: /* Use S2 (P1.1) to turn on and off LED1 (P1.0). */

2016-11-06T19:14:57Z

Use S2 (P1.1) to turn on and off LED1 (P1.0).

@@ Line 57: / Line 57: @@
              .sect   ".reset"                ; MSP430 RESET Vector
              .short  RESET
 </nowiki>

Frohro: /* PWM to drive the Robot Wheels */

2015-12-10T22:28:40Z

PWM to drive the Robot Wheels

← Older revision		Revision as of 15:28, 10 December 2015
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	.end		.end
	</nowiki>		</nowiki>
	====PWM to drive the Robot Wheels====		====PWM to drive the 2014 Robot Wheels====
			Note: this is for the 2014 robot which uses continuous servos to drive wheels, not the DC motors and H-Bridge used in the 2015 robot.
	<nowiki>		<nowiki>
	;-------------------------------------------------------------------------------		;-------------------------------------------------------------------------------

Frohro: /* Blink the LED Using Timer TA0 and Interrupts */

2015-11-12T01:33:41Z

Blink the LED Using Timer TA0 and Interrupts

← Older revision		Revision as of 18:33, 11 November 2015
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	bis.w #TACLR, &TA0CTL ; Clear the timer TAR.		bis.w #TACLR, &TA0CTL ; Clear the timer TAR.
	bis.w #TASSEL__ACLK, &TA0CTL ; Use ACLK (32 KHz). This means 2 seconds a period.		bis.w #TASSEL__ACLK, &TA0CTL ; Use ACLK (32 KHz). This means 2 seconds a period.
	bic.w #ID0\|ID1, &TA0CTL ; Divide by 4.		bic.w #ID0\|ID1, &TA0CTL ; Divide by 1.
	bic.w #TAIFG, &TA0CTL ; Clear the interrupt flag.		bic.w #TAIFG, &TA0CTL ; Clear the interrupt flag.
	bis.w #MC0, &TA0CTL ; Set timer mode to count to TA0CCR0.		bis.w #MC0, &TA0CTL ; Set timer mode to count to TA0CCR0.

Frohro: /* Stack Manipulation Demonstration */

2015-11-09T19:24:16Z

Stack Manipulation Demonstration

← Older revision		Revision as of 12:24, 9 November 2015
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	<\nowiki>		</nowiki>

	====Blink the LED Using Timer TA0 and Interrupts====		====Blink the LED Using Timer TA0 and Interrupts====

Frohro: /* Stack Manipulation Demonstration */

2015-11-09T19:23:32Z

Stack Manipulation Demonstration

← Older revision		Revision as of 12:23, 9 November 2015
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	; This program demonstrates the use of the stack.		; This program demonstrates the use of the stack.
	; Rob Frohne November, 2015		; Rob Frohne November, 2015
	;		; This program is to play around and see how the stack is manipulated. Try it!
	;-------------------------------------------------------------------------------		;-------------------------------------------------------------------------------
	.cdecls C,LIST,"msp430.h" ; Include device header file		.cdecls C,LIST,"msp430.h" ; Include device header file
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	\<nowiki>		<\nowiki>

	====Blink the LED Using Timer TA0 and Interrupts====		====Blink the LED Using Timer TA0 and Interrupts====
	<nowiki>		<nowiki>

Frohro: /* Blink the LED Using Timer TA0 and Interrupts */

2015-11-09T19:22:17Z

Blink the LED Using Timer TA0 and Interrupts

@@ Line 156: / Line 156: @@
 </nowiki>
 ====Blink the LED Using Timer TA0 and Interrupts====
   <nowiki>

Frohro: /* Analog to Digital Conversion Example */

2015-11-09T19:18:54Z

Analog to Digital Conversion Example

← Older revision		Revision as of 12:18, 9 November 2015
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	;-------------------------------------------------------------------------------		;-------------------------------------------------------------------------------
	.text ; Assemble into program memory		.text ; Assemble into program memory
	.global RESET ; Remember to set linker option to enter at RESET.		.global RESET ; Remember to set linker option to enter at RESET.
	.retain ; Override ELF conditional linking		.retain ; Override ELF conditional linking
	; and retain current section		; and retain current section
Line 470:		Line 470:
	;-------------------------------------------------------------------------------		;-------------------------------------------------------------------------------
	mov.w #ADC12SHT02\|ADC12ON, & ADC12CTL0 ; Sampling time, ADC 12 on		mov.w #ADC12SHT02\|ADC12ON, & ADC12CTL0 ; Sampling time, ADC 12 on
	mov.w #ADC12SHP, &ADC12CTL1 ; Use sampling timer.		mov.w #ADC12SHP, &ADC12CTL1 ; Use sampling timer.
	mov.w #BIT0, &ADC12IE ; Enable interrupt.		mov.w #BIT0, &ADC12IE ; Enable interrupt.
	bis.w #ADC12ENC, &ADC12CTL0 ;		bis.w #ADC12ENC, &ADC12CTL0 ;
	bis.w #BIT0, &P6SEL ; Select ADC instead of GPIO.		bis.w #BIT0, &P6SEL ; Select ADC instead of GPIO.
	bis.w #BIT0, &P1DIR ; P1.0 as output.		bis.w #BIT0, &P1DIR ; P1.0 as output.

	bis.w #ADC12SC, &ADC12CTL0 ; Start conversion		bis.w #ADC12SC, &ADC12CTL0 ; Start conversion
	nop		nop
	bis.w #LPM0\|GIE, SR ; bis.w #LPM0\|GIE, SR doesn't quite work. Put the processor in Low Power Mode 0 and enable interrupts.		bis.w #LPM0\|GIE, SR ; bis.w #LPM0\|GIE, SR doesn't quite work. Put the processor in Low Power Mode 0 and enable interrupts.
	nop		nop
	; no loop needed. We go to sleep forever.		; no loop needed. We go to sleep forever.

	ADC12_ISR:		ADC12_ISR:
	cmp.w #ADC12IV_ADC12IFG0, &ADC12IV ; ADC12IFG0		cmp.w #ADC12IV_ADC12IFG0, &ADC12IV ; ADC12IFG0
	jnz finish		jnz finish
	cmp.w #0x7ff, &ADC12MEM0 ; compare r8 to AVdd/2		cmp.w #0x7ff, &ADC12MEM0 ; compare r8 to AVdd/2
	jge on		jge on
	bic.b #BIT0, &P1OUT ; Turn off the LED on P1.0.		bic.b #BIT0, &P1OUT ; Turn off the LED on P1.0.
	jmp there		jmp there
	on: bis.b #BIT0, &P1OUT ; Turn on LED		on: bis.b #BIT0, &P1OUT ; Turn on LED
	there:		there:
	bic.w #ADC12IV_ADC12IFG0, &ADC12IV ; Clear interrupt flag.		bic.w #ADC12IV_ADC12IFG0, &ADC12IV ; Clear interrupt flag.
	finish: reti		finish: reti

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	.sect ".reset" ; MSP430 RESET Vector		.sect ".reset" ; MSP430 RESET Vector
	.short RESET		.short RESET
	.sect ".int54" ; ADC12 interrupt		.sect ".int54" ; ADC12 interrupt
	.short ADC12_ISR		.short ADC12_ISR