Arduinoos

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 11, 12

Once again, I decided to gather all the scanning engine code in one library (PlainDAC). This is the link to the library, and below is the example code from the library which shows how easy it is now to acquire wave signals with excellent time interval accuracy:

/*
Example of use of the PlainDAC Library
No warranty, no claims, just fun
Didier Longueville invenit et fecit October 2010
*/
#include 

PlainDAC DAC = PlainDAC(); // Create DAC object
const uint16_t samples = 128; // Max value depends upon available memory space
uint16_t frequency = 32000; // From 16 Hz to 64 kHz
uint8_t vData[samples];
uint8_t channel = 0; // From 0 to 5 on Diecimila

void setup(){  
	// Initialize serial comm port
	Serial.begin(115200); // 
	Serial.println("Ready");
	// Set acquisition parameters
	DAC.setAcquisitionParameters(channel, samples, frequency);
	// For curiosity
	Serial.print("adcPrescaler: ");
	Serial.println(DAC.adcPrescaler(), DEC);
	Serial.print("timPrescaler: ");
	Serial.println(DAC.timPrescaler(), DEC);
	Serial.print("timUpperCount: ");
	Serial.println(DAC.timUpperCount(), DEC);
}

void loop() {
	DAC.acquireData(vData);
	printVector();
	delay(1000);
}

void printVector() {
	double timeIntervals = (1.0 / frequency);
	for (uint16_t i = 0; i < samples; i++) {
		Serial.print((timeIntervals * i), 6);
		Serial.print(" ");
		Serial.print((((vData[i] - 128) * 5.0) / 256) , 2);
		Serial.println();
	}
	Serial.println();
}

This is obviously a basic application, that you may feel free to improve. You are kindly invited to leave your comments on it!

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