97 lines
4.9 KiB
Plaintext
Executable File
97 lines
4.9 KiB
Plaintext
Executable File
; --COPYRIGHT--,BSD_EX
|
|
; Copyright (c) 2012, Texas Instruments Incorporated
|
|
; All rights reserved.
|
|
;
|
|
; Redistribution and use in source and binary forms, with or without
|
|
; modification, are permitted provided that the following conditions
|
|
; are met:
|
|
;
|
|
; * Redistributions of source code must retain the above copyright
|
|
; notice, this list of conditions and the following disclaimer.
|
|
;
|
|
; * Redistributions in binary form must reproduce the above copyright
|
|
; notice, this list of conditions and the following disclaimer in the
|
|
; documentation and/or other materials provided with the distribution.
|
|
;
|
|
; * Neither the name of Texas Instruments Incorporated nor the names of
|
|
; its contributors may be used to endorse or promote products derived
|
|
; from this software without specific prior written permission.
|
|
;
|
|
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
; THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
; EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
;
|
|
; ******************************************************************************
|
|
;
|
|
; MSP430 CODE EXAMPLE DISCLAIMER
|
|
;
|
|
; MSP430 code examples are self-contained low-level programs that typically
|
|
; demonstrate a single peripheral function or device feature in a highly
|
|
; concise manner. For this the code may rely on the device's power-on default
|
|
; register values and settings such as the clock configuration and care must
|
|
; be taken when combining code from several examples to avoid potential side
|
|
; effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
|
|
; for an API functional library-approach to peripheral configuration.
|
|
;
|
|
; --/COPYRIGHT--
|
|
;*******************************************************************************
|
|
; MSP430F20xx Demo - Software Port Interrupt on P1.4 from LPM4
|
|
;
|
|
; Description: A hi/low transition on P1.4 will trigger P1_ISR which,
|
|
; toggles P1.0. Normal mode is LPM4 ~ 0.1uA. LPM4 current can be measured
|
|
; with the LED removed, all unused P1.x/P2.x configured as output or inputs
|
|
; pulled high or low, and ensure the P2.0 interrupt input does not float.
|
|
; ACLK = n/a, MCLK = SMCLK = default DCO
|
|
;
|
|
; MSP430F20xx
|
|
; -----------------
|
|
; /|\| XIN|-
|
|
; | | |
|
|
; --|RST XOUT|-
|
|
; /|\ | |
|
|
; --o--|P1.4 P1.0|-->LED
|
|
; \|/
|
|
;
|
|
; M. Buccini / L. Westlund
|
|
; Texas Instruments Inc.
|
|
; October 2005
|
|
; Built with IAR Embedded Workbench Version: 3.40A
|
|
;*******************************************************************************
|
|
#include <msp430.h>
|
|
;-------------------------------------------------------------------------------
|
|
ORG 0F800h ; Program Reset
|
|
;-------------------------------------------------------------------------------
|
|
RESET mov.w #0280h,SP ; Initialize stackpointer
|
|
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
|
|
SetupPx bis.b #001h,&P1DIR ; P1.0 output
|
|
bis.b #010h,&P1IE ; P1.4 Interrupt enabled
|
|
bis.b #010h,&P1IES ; P1.4 hi/low edge
|
|
bic.b #010h,&P1IFG ; P1.4 IFG Cleared
|
|
;
|
|
Mainloop bis.w #LPM4+GIE,SR ; LPM4, enable interrupts
|
|
nop ; Required only for debugger
|
|
;
|
|
;-------------------------------------------------------------------------------
|
|
P1_ISR; Toggle P1.0 Output
|
|
;-------------------------------------------------------------------------------
|
|
xor.b #001h,&P1OUT ; P1.0 = toggle
|
|
bic.b #010h,&P1IFG ; P1.4 IFG Cleared
|
|
reti ; Return from ISR
|
|
;
|
|
;-------------------------------------------------------------------------------
|
|
; Interrupt Vectors
|
|
;-------------------------------------------------------------------------------
|
|
ORG 0FFFEh ; MSP430 RESET Vector
|
|
DW RESET ;
|
|
ORG 0FFE4h ; P1.x Vector
|
|
DW P1_ISR ;
|
|
END
|