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Fork of ADCandticker_sample by
Revision 2:fe6ada70739c, committed 2018-02-01
- Comitter:
- edwinkad
- Date:
- Thu Feb 01 18:05:47 2018 +0000
- Parent:
- 1:126dd2f5fc2d
- Commit message:
- test
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
diff -r 126dd2f5fc2d -r fe6ada70739c main.cpp --- a/main.cpp Wed Jan 24 21:55:43 2018 +0000 +++ b/main.cpp Thu Feb 01 18:05:47 2018 +0000 @@ -7,24 +7,30 @@ Ticker tick; // Ticker for reading analog AnalogIn ain(A0) ; // Analog input -DigitalOut led1(LED_RED); // Red LED +DigitalOut led1(PTA13); // Red LED +DigitalOut led2(PTD3); // Red LED +DigitalOut led3(PTD2); // Red LED +DigitalOut led4(PTD0); // Red LED +DigitalOut led5(PTD5); // Red LED + Serial pc(USBTX, USBRX); // tx, rx, for debugging // Message type typedef struct { - uint16_t analog; /* Analog input value */ + uint16_t analog; /* Analog input value */ } message_t; // Mail box Mail<message_t, 2> mailbox; // Function called every 10ms to read ADC -// Low pass filter +// Low pass filter // Every 10th value is sent to mailbox volatile int samples = 0 ; -volatile uint16_t smoothed = 0 ; -void readA0() { +volatile uint16_t smoothed = 0 ; +void readA0() +{ smoothed = (smoothed >> 1) + (ain.read_u16() >> 1) ; samples++ ; if (samples == 10) { @@ -35,12 +41,13 @@ mailbox.put(mess); // fails but does not block if full } samples = 0; - } + } } // Write voltage digits // v Voltage as scale int, e.g. 3.30 is 330 -void vToString(int v, char* s) { +void vToString(int v, char* s) +{ s[3] = '0' + (v % 10) ; v = v / 10 ; s[2] = '0' + (v % 10) ; @@ -51,9 +58,10 @@ // Main program // Initialise variables // Attach ISR for ticker -// Procss messages from mailbox -int main() { - led1 = 1 ; // turn off +// Procss messages from mailbox +int main() +{ + led1 = 1 ; // turn off int volts = 0 ; const int threshold = 100 ; int counter = 0 ; @@ -61,12 +69,48 @@ tick.attach_us(callback(&readA0), 10000); // ticks every 10ms while (true) { - osEvent evt = mailbox.get(); // wait for mail + osEvent evt = mailbox.get(); // wait for mail if (evt.status == osEventMail) { message_t* mess = (message_t*)evt.value.p ; volts = (mess->analog * 330) / 0xffff ; mailbox.free(mess) ; // free the message space - if (volts > threshold) led1 = 0 ; else led1 = 1 ; + if (volts > 55 && volts < 109) { + led1 = 1 ; + led2 = 0 ; + led3 = 0 ; + led4 = 0 ; + led5 = 0 ; + } else if (volts > 110 && volts < 164) { + led1 = 1 ; + led2 = 1 ; + led3 = 0 ; + led4 = 0 ; + led5 = 0 ; + } else if (volts > 165 && volts < 219) { + led1 = 1 ; + led2 = 1 ; + led3 = 1 ; + led4 = 0 ; + led5 = 0 ; + } else if (volts > 220 && volts < 274) { + led1 = 1 ; + led2 = 1 ; + led3 = 1 ; + led4 = 1 ; + led5 = 0 ; + } else if (volts > 275) { + led1 = 1 ; + led2 = 1 ; + led3 = 1 ; + led4 = 1 ; + led5 = 1 ; + } else { + led1 = 0 ; + led2 = 0 ; + led3 = 0 ; + led4 = 0 ; + led5 = 0 ; + } vToString(volts, vstring) ; counter++ ; if (counter == 10) { // limit bandwidth of serial