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127 lines
2.7 KiB
127 lines
2.7 KiB
#define hzclk 7
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#define hzbinary 6
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#define sigLED 11
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uint8_t hzclkval = 0;
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uint8_t hzbinval[30];
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uint8_t clkval = 0;
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uint32_t milliscompare = 0;
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uint8_t readyet = 0;
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uint8_t x = 0;
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uint16_t mainsfreq = 0;
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struct {
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unsigned int mainstwo : 14;
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} bitfieldA;
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void setup() {
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// put your setup code here, to run once:
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pinMode(hzclk, INPUT);
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pinMode(hzbinary, INPUT);
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pinMode(sigLED, OUTPUT);
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Serial.begin(115200);
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}
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void loop() {
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if(digitalRead(hzbinary) == LOW){
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//this handles one clk cycle each
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//need to read 20 cycles
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clkval = 0;
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checkCLKandBIN();checkCLKandBIN();checkCLKandBIN();
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checkCLKandBIN();checkCLKandBIN();checkCLKandBIN();
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checkCLKandBIN();checkCLKandBIN();checkCLKandBIN();
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checkCLKandBIN();checkCLKandBIN();checkCLKandBIN();
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checkCLKandBIN();checkCLKandBIN();checkCLKandBIN();
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checkCLKandBIN();
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checkCLKandBIN();
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checkCLKandBIN();
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checkCLKandBIN();
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checkCLKandBIN();
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checkCLKandBIN();
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checkCLKandBIN();
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//Serial.println(clkval); //outputs 19 or 20
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ConvertArraytoBin();
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mainsfreq = 0;
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bitfieldA.mainstwo = 0;
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}
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delayMicroseconds(100); //must be lower than 1 millisecond, so mic
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/*if hzbinary is low
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*
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* while clk high, do nothing
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* clk++
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* sample hzbinary
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* while clk low do nothing
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*/
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/*
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* //serial print is very slow, and breaks timing
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* the below is not usable
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* (DMA anyone? second processor anyone?)
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Serial.println("hzbinval 1 - 20:");
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for(x=0;x<21;x++){
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Serial.println(hzbinval[x]);
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}
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Serial.print("\n\n\n\n");
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*/
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//sample on falling edge (middle of bit)
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}
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void checkCLKandBIN(void){
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/*
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* while clk high, do nothing
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* clk++
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* sample hzbinary
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* while clk low do nothing
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*/
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//milliscompare = millis();
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while((hzclkval = digitalRead(hzclk)) == HIGH){
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if(readyet == 0){
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hzbinval[clkval] = digitalRead(hzbinary);
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clkval++;
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readyet = 1;
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}
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delayMicroseconds(10);
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}
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while((hzclkval = digitalRead(hzclk)) == LOW){
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delayMicroseconds(1);
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readyet = 0;
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}
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//digitalWrite(sigLED, HIGH);
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//delayMicroseconds(1);
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//digitalWrite(sigLED, LOW);
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//would be nice to add a picture to this source code (waveform)
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//or oscope picture
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//why isn't this possible?
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}
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void ConvertArraytoBin (void){
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for(x=3;x<21;x++){
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if(hzbinval[x] == 1){
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bitfieldA.mainstwo = bitfieldA.mainstwo | (0b0000000000000000000001 << (x - 3));
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}
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}
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Serial.println(bitfieldA.mainstwo,BIN);
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/*mainsfreq = mainsfreq >> 3;
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mainsfreq = mainsfreq & 0b0111111111111;
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Serial.println(mainsfreq,DEC);
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//111011011101
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//1011101101111
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//111011011101
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//11101101111*/
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}
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