// To illustrate the speed of the reset time the LED flashes in accordance // of the selected interval.. Grewal // Texas Instruments Inc.
Trang 1*******
// MSP430F20xx Demo - WDT+ periodic reset
//
// Description; Various reset intervals are configured in watchdog mode // To illustrate the speed of the reset time the LED flashes in
accordance
// of the selected interval
//
// ACLK = 32khz, MCLK = SMCLK = default DCO
//
// MSP430F20xx
//
-// /|\|
XIN|-// | | |
// |RST
XOUT|-// | |
// | P1.0| >LED
//
// R B Elliott / H Grewal
// Texas Instruments Inc
// April 2007
// Built with IAR Embedded Workbench Version: 3.42A
//***********************************************************************
*******
#include <msp430x20x3.h>
void main(void)
{
// WDT is clocked by fSMCLK (1MHz)
WDTCTL = WDT_MRST_32; // ~32ms interval (default) //WDTCTL = WDT_MRST_8; // ~8ms
//WDTCTL = WDT_MRST_0_5; // ~0.5ms
//WDTCTL = WDT_MRST_0_064; // ~0.064ms
// WDT is clocked by fACLK (32KHz)
//WDTCTL = WDT_ARST_1000; // 1000ms
//WDTCTL = WDT_ARST_250; // 250ms
//WDTCTL = WDT_ARST_16; // 16ms
//WDTCTL = WDT_ARST_1_9; // 1.9ms
P1DIR |= 0x01;
P1OUT ^=0x01;
_BIS_SR(LPM0_bits + GIE); // Enter LPM3 w/interrupt }
File Name Description
-
-msp430x20x2_adc10_01.c ADC10, Sample A0, Set P1.0 if A0 > 0.5*AVcc msp430x20x2_adc10_02.c ADC10, Sample A1, 1.5V Ref, Set P1.0 if A1 > 0.2V
Trang 2msp430x20x2_adc10_03.c ADC10, ADC10, Sample A10 Temp, Set P1.0 if Temp ++ ~2C
msp430x20x2_adc10_04.c ADC10, ADC10, Sample A1, Signed, Set P1.0 if A1 > 0.5*AVcc
msp430x20x2_adc10_05.c ADC10, ADC10, Sample A11, Lo_Batt, Set P1.0
if AVcc < 2.3V
msp430x20x2_adc10_06.c ADC10, ADC10, Output Internal Vref on P1.4 & ADCCLK on P1.3
msp430x20x2_adc10_07.c ADC10, DTC Sample A1 32x, AVcc, Repeat Single, DCO
msp430x20x2_adc10_08.c ADC10, ADC10, DTC Sample A1 32x, 1.5V, Repeat Single, DCO
msp430x20x2_adc10_09.c ADC10, ADC10, DTC Sample A10 32x, 1.5V, Repeat Single, DCO
msp430x20x2_adc10_10.c ADC10, ADC10, DTC Sample A3-01, AVcc, Single Sequence, DCO
msp430x20x2_adc10_11.c ADC10, ADC10, Sample A1, 1.5V, TA1 Trig, Set P1.0 if > 0.5V
msp430x20x2_adc10_12.c ADC10, Sample A7, 1.5V, TA1 Trig, Ultra-Low Pwr
msp430x20x2_adc10_13.c ADC10, DTC Sample A1 32x, AVcc, TA0 Trig, DCO
msp430x20x2_adc10_14.c ADC10, DTC Sample A1-0 16x, AVcc, Repeat Seq, DCO
msp430x20x2_adc10_16.c ADC10, ADC10, DTC Sample A0 -> TA1, AVcc, DCO
msp430x20x2_adc10_temp.c ADC10, Sample A10 Temp and Convert to oC and oF
msp430x20x1_ca_01.c Comp_A, Output Reference Voltages on P1.1
msp430x20x1_ca_02.c Comp_A, Detect Threshold, Set P1.0 if P1.1 > 0.25*Vcc
msp430x20x1_ca_03.c Comp_A, Simple 2.2V Low Battery Detect msp430x20x3_1.c Software Toggle P1.0
msp430x20x3_1_vlo.c Software Toggle P1.0, MCLK = VLO/8 msp430x20x3_clks.c Basic Clock, Output Buffered SMCLK, ACLK and MCLK/10
msp430x20xx_dco_flashcal.c DCO Calibration Constants Programmer msp430x20x3_flashwrite_01.c Flash In-System Programming, Copy SegC
to SegD
msp430x20x3_LFxtal_nmi.c LFXT1 Oscillator Fault Detection
msp430x20x3_lpm3.c Basic Clock, LPM3 Using WDT ISR, 32kHz ACLK
msp430x20x3_lpm3_vlo.c Basic Clock, LPM3 Using WDT ISR, VLO ACLK
msp430x20x3_nmi.c Basic Clock, Configure RST/NMI as NMI msp430x20x3_P1_01.c Software Poll P1.4, Set P1.0 if P1.4 = 1
msp430x20x3_P1_02.c Software Port Interrupt Service on P1.4 from LPM4
msp430x20x3_P1_03.c Poll P1 With Software with Internal Pull-up
msp430x20x3_P1_04.c P1 Interrupt from LPM4 with Internal Pull-up
Trang 3msp430x20x3_sd16A_01.c SD16A, Sample A1+ Continuously, Set P1.0 if > 0.3V
msp430x20x3_sd16A_02.c SD16, Using the Integrated Temperature Sensor
msp430x20x3_ta_01.c Timer_A, Toggle P1.0, CCR0 Cont Mode ISR, DCO SMCLK
msp430x20x3_ta_02.c Timer_A, Toggle P1.0, CCR0 Up Mode ISR, DCO SMCLK
msp430x20x3_ta_03.c Timer_A, Toggle P1.0, Overflow ISR, DCO SMCLK
msp430x20x3_ta_04.c Timer_A, Toggle P1.0, Overflow ISR, 32kHz ACLK
msp430x20x3_ta_05.c Timer_A, Toggle P1.0, CCR0 Up Mode ISR, 32kHz ACLK
msp430x20x3_ta_06.c Timer_A, Toggle P1.0, CCR1 Cont Mode ISR, DCO SMCLK
msp430x20x3_ta_07.c Timer_A, Toggle P1.0-2, Cont Mode ISR, DCO SMCLK
msp430x20x3_ta_08.c Timer_A, Toggle P1.0-2, Cont Mode ISR, 32kHz ACLK
msp430x20x3_ta_10.c Timer_A, Toggle P1.1/TA0, Up Mode, DCO SMCLK
msp430x20x3_ta_11.c Timer_A, Toggle P1.1/TA0, Up Mode, 32kHz ACLK
msp430x20x3_ta_13.c Timer_A, Toggle P1.1/TA0, Up/Down Mode, DCO SMCLK
msp430x20x3_ta_14.c Timer_A, Toggle P1.1/TA0, Up/Down Mode, 32kHz ACLK
msp430x20x3_ta_16.c Timer_A, PWM TA1-2, Up Mode, DCO SMCLK msp430x20x3_ta_17.c Timer_A, PWM TA1, Up Mode, 32kHz ACLK msp430x20x3_ta_19.c Timer_A, PWM TA1, Up/Down Mode, DCO SMCLK
msp430x20x3_ta_20.c Timer_A, PWM TA1, Up/Down Mode, 32kHz ACLK
msp430x20x3_ta_uart2400.c Timer_A, Ultra-Low Pwr UART 2400 Echo, 32kHz ACLK
msp430x20x3_usi_01.c USICNT Used as a One-Shot Timer
Function, DCO SMCLK
msp430x20x3_usi_02.c SPI full-Duplex 3-wire Master
msp430x20x3_usi_03.c SPI full-Duplex 3-wire Slave
msp430x20x3_usi_04.c USI SPI Interface with HC165/164 Shift Registers
msp430x20x3_usi_05.c USI SPI Interface to TLC549 8-bit ADC msp430x20x3_usi_06.c I2C Master Receiver, single byte
msp430x20x3_usi_07.c I2C Master Transmitter, single byte msp430x20x3_usi_08.c I2C Slave Receiver, single byte
msp430x20x3_usi_09.c I2C Slave Transmitter, single byte msp430x20x3_wdt_01.c WDT, Toggle P1.0, Interval Overflow ISR, DCO SMCLK
msp430x20x3_wdt_02.c WDT, Toggle P1.0, Interval Overflow ISR, 32kHz ACLK
msp430x20x3_wdt_04.c WDT+ Failsafe Clock, DCO SMCLK
msp430x20x3_wdt_05.c Reset on Invalid Address fetch, Toggle P1.0
Trang 4msp430x20x3_wdt_06.c WDT+ Failsafe Clock, 32kHz ACLK
msp430x20x3_dco_calib.c Basic Clock with preloaded DCO calibration constants
msp430x20x3_sd16A_03.c The SD16A sample of a single sequence of channels msp430x20x3_usi_10.c I2C Master Receiver Multiple Bytes
msp430x20x3_usi_11.c I2C Master Transmitter Multiple Bytes
msp430x20x3_usi_12.c I2C Master Transmitter / Receiver, Multiple Bytes (no rpt st)
msp430x20x3_usi_13.c I2C Slave Receiver, Multiple Bytes (to be used with usi_11)
msp430x20x3_usi_14.c I2C Slave Transmitter, multiple bytes (to be used with usi_10)
msp430x20x3_usi_15.c I2C Slave Receiver Universal code (to be used with usi_12)
msp430x20x3_usi_16.c I2C Master Transmitter / Reciever, Repeated Start (to be used with usi_15)
msp430x20x3_wdt_07.c WDT+ periodic reset