uc: enable support for sampling both ADC0 and ADC1
This commit is contained in:
Bart Van Der Meerssche
parent
9f0852e5bb
commit
3dead16060
68
uc/main.c
68
uc/main.c
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@ -41,46 +41,61 @@ volatile struct state aux[4] = {{false, false, START, 0}, {false, false, START,
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volatile struct sensor EEMEM EEPROM_measurements[4] = {{SENSOR0, START}, {SENSOR1, START}, {SENSOR2, START}, {SENSOR3, START}};
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volatile struct sensor measurements[4];
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uint8_t muxn = 0;
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// interrupt service routine for INT0
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ISR(INT0_vect) {
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measurements[1].value++;
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aux[1].pulse = true;
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}
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// interrupt service routine for INT1
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ISR(INT1_vect) {
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measurements[2].value++;
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aux[2].pulse = true;
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}
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// interrupt service routine for PCI2 (PCINT20)
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ISR(PCINT2_vect) {
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if (aux[3].toggle == false) {
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aux[3].toggle = true;
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}
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else {
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// interrupt service routine for INT1
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ISR(INT1_vect) {
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measurements[3].value++;
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aux[3].pulse = true;
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aux[3].toggle = false;
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}
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// interrupt service routine for PCI2 (PCINT20)
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/**
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ISR(PCINT2_vect) {
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if (aux[4].toggle == false) {
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aux[4].toggle = true;
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}
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else {
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measurements[4].value++;
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aux[4].pulse = true;
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aux[4].toggle = false;
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}
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}
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**/
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// interrupt service routine for ADC
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ISR(TIMER2_OVF_vect) {
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// read ADC result
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// add to nano(Wh) counter
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MacU16X16to32(aux[0].nano, METERCONST, ADC);
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if (muxn < 2) {
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MacU16X16to32(aux[muxn].nano, METERCONST, ADC);
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if (aux[0].nano > 1000000000) {
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measurements[0].value++;
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aux[0].pulse = true;
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aux[0].nano -= 1000000000;
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aux[0].debug = ADC;
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if (aux[muxn].nano > 1000000000) {
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measurements[muxn].value++;
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aux[muxn].pulse = true;
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aux[muxn].nano -= 1000000000;
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aux[muxn].debug = ADC;
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}
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}
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// rotate amongst the available ADC input channels (0 to 7)
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muxn = ++muxn & 0x7;
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// but only use ADC0 and 1
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if (muxn < 2) {
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ADMUX &= 0xF8;
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ADMUX |= muxn;
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// start a new ADC conversion
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ADCSRA |= (1<<ADSC);
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}
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}
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// interrupt service routine for analog comparator
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ISR(ANALOG_COMP_vect) {
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@ -189,8 +204,8 @@ void setup()
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ACSR |= (1<<ACBG) | (1<<ACIE) | (1<<ACIS1) | (1<<ACIS0);
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// Timer2 normal operation
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// Timer2 clock prescaler set to 8 => fTOV2 = 1000kHz / 256 / 8 = 488.28Hz (DS p.158)
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TCCR2B |= (1<<CS21);
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// Timer2 clock prescaler set to 1 => fTOV2 = 1000kHz / 256 / 1 = 3906.24Hz (DS p.158)
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TCCR2B |= (1<<CS20);
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TIMSK2 |= (1<<TOIE2);
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// disable digital input cicuitry on ADCx pins to reduce leakage current
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@ -198,11 +213,8 @@ void setup()
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// select VBG as reference for ADC
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ADMUX |= (1<<REFS1) | (1<<REFS0);
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// ADCn selected via main.h
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ADMUX |= MUXN;
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// ADC prescaler set to 8 => 1000kHz / 8 = 125kHz (DS p.258)
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ADCSRA |= (1<<ADPS1) | (1<<ADPS0);
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// enable ADC and start a first ADC conversion
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ADCSRA |= (1<<ADEN) | (1<<ADSC);
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@ -243,10 +255,12 @@ void loop()
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// check whether we have to send out a pls to the deamon
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for (i=0; i<4; i++) {
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if (aux[i].pulse == true) {
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if (i == 0) {
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if (i < 2) {
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//debugging
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printString("msg ADC sample value: ");
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printIntegerInBase((unsigned long)aux[0].debug, 10);
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printString("msg ADC");
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printInteger((long)i);
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printString(" sample value: ");
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printIntegerInBase((unsigned long)aux[i].debug, 10);
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printString("\n");
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}
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send((const struct sensor *)&measurements[i]);
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12
uc/main.h
12
uc/main.h
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@ -43,32 +43,32 @@
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#ifndef METERCONST
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#if TYPE == 2201 // 220V - 1-phase @ 488.28Hz sampling rate
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#define METERCONST 6783
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#define MUXN 0
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// #define MUXN 0
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#warning "220V - 1-phase selected. METERCONST set to 6783"
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#elif TYPE == 2203 // 220V - 3-phase @ 488.28Hz sampling rate
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#define METERCONST 6721
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#define MUXN 1
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// #define MUXN 1
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#warning "220V - 3-phase selected. METERCONST set to 6721"
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#elif TYPE == 2301 // 230V - 1-phase @ 488.28Hz sampling rate
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#define METERCONST 7091
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#define MUXN 0
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// #define MUXN 0
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#warning "230V - 1-phase selected. METERCONST set to 7091"
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#elif TYPE == 2303 // 230V - 3-phase @ 488.28Hz sampling rate
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#define METERCONST 7026
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#define MUXN 1
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// #define MUXN 1
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#warning "230V - 3-phase selected. METERCONST set to 7026"
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#elif TYPE == 2401 // 240V - 1-phase @ 488.28Hz sampling rate
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#define METERCONST 7399
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#define MUXN 0
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// #define MUXN 0
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#warning "240V - 1-phase selected. METERCONST set to 7399"
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#elif TYPE == 2403 // 240V - 3-phase @ 488.28Hz sampling rate
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#define METERCONST 7331
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#define MUXN 1
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// #define MUXN 1
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#warning "240V - 3-phase selected. METERCONST set to 7331"
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#endif
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#endif
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