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