Software sets ADC10SC to start sample and conversion // - ADC10SC automatically cleared at EOC.. ADC10 internal oscillator times // sample 16x and conversion.. ADC10BUSY flag is polled f
Trang 1//****************************************************************************** // MSP430F20x2 Demo - ADC10, Sample A11, Lo_Batt, Set P1.0 if < 2.3V
//
// Description: A single sample is made on A11 (AVcc/2) with reference to
// internal 1.5V Vref Software sets ADC10SC to start sample and conversion
// - ADC10SC automatically cleared at EOC ADC10 internal oscillator times
// sample (16x) and conversion ADC10BUSY flag is polled for EOC If A11
// (AVcc/2) < 0311h (0.65V) indicating AVcc is less 2.3V, P1.0 set indicating
// a lo_Batt condition, else reset
//
// MSP430F20x2
//
-// /|\|
XIN|-// | | |
// |RST
XOUT|-// | |
// |A11 P1.0| >LED
//
// L Westlund
// Texas Instruments Inc
// May 2006
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.41A
//******************************************************************************
#include "msp430x20x2.h"
Trang 2void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
ADC10CTL1 = INCH_11; // AVcc/2
ADC10CTL0 = SREF_1 + ADC10SHT_2 + REFON + ADC10ON;
P1DIR |= 0x01; // Set P1.0 to output direction
for (;;)
{
ADC10CTL0 |= ENC + ADC10SC; // Sampling and conversion start
while (ADC10CTL1 & ADC10BUSY); // ADC10BUSY?
if (ADC10MEM < 0x311) // ADC10MEM = A11 > 0.65?
P1OUT |= 0x01; // Set P1.0 LED on
else
P1OUT &= ~0x01; // Clear P1.0 LED of
}
}
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
msp430x20x2_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
Trang 3msp430x20x2_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 Bufered 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
Trang 4msp430x20x3_P1_04.c P1 Interrupt from LPM4 with Internal Pull-up
msp430x20x3_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
Trang 5msp430x20x3_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
msp430x20x3_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