/* * 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); } }