static volatile unsigned int irq_events = 0;
enum {ev_btn1 = 0, ev_btn2, ev_pir1, ev_pir2, ev_tmr, ev_adc, ev_MAX};
+#ifdef ADCSC /* Let us hope that this is a "new" model */
+# define BIT_RL BIT0
+# define BIT_GL BIT1
+# define PBTN(x) P2##x
+# define BIT_BTN BIT3
+# define HAVE_BTN2
+# define BIT_BTN2 BIT7
+#else
+# define BIT_RL BIT0
+# define BIT_GL BIT6
+# define PBTN(x) P1##x
+# define BIT_BTN BIT3
+# define BIT_BTN2 0
+#endif
+
int main(void)
{
int Duty_Cycle = 1;
WDTCTL = WDTPW | WDTHOLD; // stop watchdog timer
// Configure GPIO Out
- P1DIR |= BIT0|BIT1|BIT2; // Set LEDs & PWM to output direction
- P1OUT &= ~(BIT0|BIT1); // P1.0&1 LEDs off
- P1SEL1 |= BIT2; // P1.2 PWM out
+ P1DIR |= BIT_RL|BIT_GL|BIT7; // Set LEDs & PWM to output direction
+ P1OUT &= ~(BIT_RL|BIT_GL); // LEDs off
+ P1SEL1 |= BIT7; // PWM out
// Configure GPIO In
- P2DIR &= ~(BIT3|BIT7); // Buttons
- P2OUT |= BIT3|BIT7; // Pull up
- P2REN |= BIT3|BIT7; // Enable pull-up
- P2IES |= BIT3|BIT7; // INT on Hi->Lo edge
- P2IE |= BIT3|BIT7; // INT enable
-
- P2DIR &= ~(BIT2|BIT5); // PIR Sensors
- P2OUT &= ~(BIT2|BIT5); // Pull down
- P2REN |= BIT2|BIT5; // Enable pull-down
- P2IES &= ~(BIT2|BIT5); // INT on Lo->Hi edge
- P2IE |= BIT2|BIT5; // INT enable
-
- // Configure ADC A7 pin
- SYSCFG2 |= ADCPCTL7;
+ PBTN(DIR) &= ~(BIT_BTN|BIT_BTN2); // Buttons
+ PBTN(OUT) |= BIT_BTN|BIT_BTN2; // Pull up
+ PBTN(REN) |= BIT_BTN|BIT_BTN2; // Enable pull-up
+ PBTN(IES) |= BIT_BTN|BIT_BTN2; // INT on Hi->Lo edge
+ PBTN(IE) |= BIT_BTN|BIT_BTN2; // INT enable
+
+ P2DIR &= ~(BIT4|BIT5); // PIR Sensors
+ P2OUT &= ~(BIT4|BIT5); // Pull down
+ P2REN |= BIT4|BIT5; // Enable pull-down
+ P2IES &= ~(BIT4|BIT5); // INT on Lo->Hi edge
+ P2IE |= BIT4|BIT5; // INT enable
// Configure ADC10
+
+#ifdef ADCPCTL4 /* Newer model */
+ SYSCFG2 |= ADCPCTL4|ADCPCTL5; // disconnect pin 4 and 5 from GPIO
ADCCTL0 |= ADCSHT_2 | ADCON; // ADCON, S&H=16 ADC clks
ADCCTL1 |= ADCSHP; // ADCCLK = MODOSC; sampling timer
ADCCTL2 |= ADCRES; // 10-bit conversion results
- ADCMCTL0 |= ADCINCH_7; // A7 ADC input select; Vref=AVCC
+ ADCMCTL0 |= ADCINCH_4; // A4 ADC input select; Vref=AVCC
ADCIE |= ADCIE0; // Enable ADC conv complete interrupt
+ // channel 5 is unused, reserved for measuring current
+#else
+# error older mode ADC unimplemented
+ // channel 5 is unused, reserved for measuring current
+#endif
// Configure timer A0 for PWM
TA0CCR0 = 10000-1; // PWM Period
continue;
}
ADCCTL0 |= ADCENC | ADCSC; // Sampling and conversion start
- P1OUT |= BIT1; // Set P1.1 LED on
+ // ADC10CTL0 |= ENC + ADC10SC; // Sampling and conversion start
+ P1OUT |= BIT_GL; // Set green LED on
}
- // End of light measurement, set new Duty_Cycle and zero increment and tuns off green led
+ // End of light measurement,
+ // set new Duty_Cycle and zero increment and turn off green led
if (events & 1<<ev_adc) {
- P1OUT &= ~BIT1; // Clear P1.1 LED off
+ P1OUT &= ~BIT_GL; // Clear green LED off
if (Time_Left)
continue;
if (ADC_Result < 200)
if (events & 1<<ev_tmr) {
if (Time_Count++ > 10) {
Time_Count = 0;
- P1OUT ^= BIT0;
+ P1OUT ^= BIT_RL; // blink
if (Time_Left)
Time_Left--;
else if (Duty_Cycle > 1)
break; // CCR2 not used
case TA1IV_TAIFG:
irq_events |= 1<<ev_tmr;
- __bic_SR_register_on_exit(LPM0_bits); // Clear CPUOFF bit from LPM0
+ __bic_SR_register_on_exit(LPM0_bits); // Wake up
break;
default:
break;
}
- //if (Time_Count++ > 1000) {
- // Time_Count = 0;
- // __bic_SR_register_on_exit(LPM0_bits); // Clear CPUOFF bit from LPM0
- //}
}
// ADC interrupt service routine
case ADCIV_ADCIFG:
ADC_Result = ADCMEM0;
irq_events |= 1<<ev_adc;
- __bic_SR_register_on_exit(LPM0_bits); // Clear CPUOFF bit from LPM0
+ __bic_SR_register_on_exit(LPM0_bits); // Wake up
break;
default:
break;
#error Compiler not supported!
#endif
{
- if (P2IFG & BIT3) {
+ if (PBTN(IFG) & BIT_BTN) {
irq_events |= 1<<ev_btn1;
- P2IFG &= ~BIT3; // Clear P1.3 IFG
+ PBTN(IFG) &= ~BIT_BTN; // Clear button IFG
}
- if (P2IFG & BIT7) {
+#ifdef HAVE_BTN2
+ if (PBTN(IFG) & BIT_BTN2) {
irq_events |= 1<<ev_btn2;
- P2IFG &= ~BIT7; // Clear P1.3 IFG
+ PBTN(IFG) &= ~BIT_BTN2; // Clear button 2 IFG
}
- if (P2IFG & BIT2) {
+#endif
+ if (P2IFG & BIT4) {
irq_events |= 1<<ev_pir1;
- P2IFG &= ~BIT2; // Clear P1.4 IFG
+ P2IFG &= ~BIT4; // Clear P2.4 IFG
}
if (P2IFG & BIT5) {
irq_events |= 1<<ev_pir2;
- P2IFG &= ~BIT5; // Clear P1.7 IFG
+ P2IFG &= ~BIT5; // Clear P2.5 IFG
}
- __bic_SR_register_on_exit(LPM3_bits); // Exit LPM3
+ __bic_SR_register_on_exit(LPM0_bits); // Wake up
}