src/corelibs/analogio: Test for SetAnalogfrequency function.

Signed-off-by: IFX-Anusha <[email protected]>

Author: IFX-Anusha

src/corelibs/analogio/test_analogio_pwm.cpp

@@ -240,6 +240,25 @@ TEST_IFX(analogio_pwm, test_analog_write_pwm_0_percentage_dutycycle)
     TEST_ASSERT_EQUAL_MESSAGE(LOW, digitalRead(PWM_PIN_FEEDBACK), "PWM output should be LOW when 0 percentage duty cycle is set");
 }
 
+/**
+ * @brief Verify SetAnalog frequency
+ */
+TEST_IFX(analogio_pwm, test_analog_set_fz)
+{
+    analogWriteResolution(16); // Set resolution to 16 bits
+    analogWrite(PWM_PIN_OUTPUT, 32767); // Set duty of 50 percent
+
+    const float frequency[] = {1, 50, 5000, 50000};
+    for(size_t i=0; i< sizeof(frequency)/sizeof(frequency[i]); i++)
+    {
+        // Set different frequencies and verify the output
+        setAnalogWriteFrequency(PWM_PIN_OUTPUT, frequency[i]);
+        delay(1000); // Wait for the signal to stabilize
+        feedback_measurement_handler();
+        TEST_ASSERT_FLOAT_WITHIN(TOLERANCE_FREQUENCY, frequency[i], measured_frequency_hz);
+    }
+}
+
 /**
  * @brief Bundle all tests to be executed for this test group.
  */
@@ -253,6 +272,7 @@ TEST_GROUP_RUNNER(analogio_pwm)
     RUN_TEST_CASE(analogio_pwm, test_analog_write_pwm_16_bit_resolution);
     RUN_TEST_CASE(analogio_pwm, test_analog_write_pwm_100_percentage_dutycycle);
     RUN_TEST_CASE(analogio_pwm, test_analog_write_pwm_0_percentage_dutycycle);
+    RUN_TEST_CASE(analogio_pwm, test_analog_set_fz);
 
     analogio_pwm_suite_teardown();
 }