Added new test for devices with no analog out.

Author: matthewelse

libraries/tests/mbed/analog_in/main.cpp

@@ -0,0 +1,58 @@
+/*
+ * Version of the Analog test,
+ * Intended for use by devices which
+ * don't have analog out.
+ *
+ * Connect 'control' to pin 21 of an mbed LPC1768
+ * Connect 'analogInput' to pin 18 of an mbed LPC1768
+ * Connect 'TX/RX' to pins 27 and 28 of an mbed LPC1768
+ * 
+ * Upload: 
+*/
+#include "test_env.h"
+
+#define ERROR_TOLERANCE 0.05 
+
+#if defined(TARGET_LPC1114)
+
+AnalogIn analogInput(dp4);
+DigitalOut control(dp5);
+DigitalOut indicator(LED1);
+
+#else
+
+#endif
+
+uint8_t successes = 0;
+
+int main() {
+	control = 0;
+
+	for (int i = 0; i < 10; i++) {
+		// Read value,
+		float expectedValue = i * 0.1;
+		float value = analogInput.read();
+
+		if (value > expectedValue + ERROR_TOLERANCE || value < expectedValue - ERROR_TOLERANCE) {
+			// Failure.
+			printf("ERROR (out:%.4f) - (in:%.4f) = (%.4f)"NL, expectedValue, value, fabs(expectedValue - value));
+		}
+		else {
+			printf("OK    (out:%.4f) - (in:%.4f) = (%.4f)"NL, out_value, in_value, diff);
+			successes++;
+		}
+
+		control = 1;
+		indicator = 1;
+		wait(0.1);
+		control = 0;
+		indicator = 0;
+	}
+
+	if (successes > 8) {
+		notify_success(true);
+	}
+	else {
+		notify_success(false);
+	}
+}