diff --git a/config/user.yml b/config/user.yml
index 47a48db3..67d6b0d5 100644
--- a/config/user.yml
+++ b/config/user.yml
@@ -38,4 +38,4 @@ unit-test:
    - unit-test-time-1400
    - unit-test-onewire-DS18x20-1400
    - unit-test-analog-io-adc-1400
-   # - unit-test-analog-io-pwm-1400
+   - unit-test-analog-io-pwm-1400
diff --git a/extras/arduino-core-tests b/extras/arduino-core-tests
index e996773f..aa5f86c1 160000
--- a/extras/arduino-core-tests
+++ b/extras/arduino-core-tests
@@ -1 +1 @@
-Subproject commit e996773f2ec622f1f3d4506f3ac658d0b7c204c7
+Subproject commit aa5f86c103cd165c9cdc4bc4f07af9ae0ec56eb9
diff --git a/tests/test_config.h b/tests/test_config.h
index b5d1aef1..f8e786f5 100644
--- a/tests/test_config.h
+++ b/tests/test_config.h
@@ -34,7 +34,7 @@
 
         #define TEST_PIN_ANALOG_IO_DAC 53
         #define TEST_PIN_ANALOG_IO_DAC_INPUT A3
-
+static const float test_pwm_frequencies[] = {1, 50, 5000, 50000};
     #elif defined(KIT_XMC1400_ARDUINO)
         #define TEST_PIN_DIGITAL_IO_OUTPUT 4
         #define TEST_PIN_DIGITAL_IO_INPUT 25
@@ -47,7 +47,7 @@
         #define TEST_PIN_ANALOG_IO_GND A0     // Pin connected to Ground
         #define TEST_ADC_MAX_VALUE 1023
         #define TEST_ADC_RESOLUTION 10 // ADC resolution
-
+static const float test_pwm_frequencies[] = {1, 50, 5000, 20000};
     #elif defined(KIT_XMC14_2GO)
         #define PWM_FREQUENCY_HZ 490          // PWM Frequency in Hz
         #define TEST_PIN_ANALOG_IO_VREF A0    // Pin connected to Vdd
@@ -60,6 +60,8 @@ extern XMCSPIClass SPI;
 
 // TODO: Need definition of PSOC6 for spi slave test. It should be managed more effectively.
 #if defined(ARDUINO_ARCH_PSOC6)
+static const float test_pwm_frequencies[] = {1, 50, 5000, 50000};
+
     // Test Pin Definitions
     #define TEST_PIN_SYNC_IO 4  // IO_1
     #define TEST_PIN_SPI_SSEL 3 // IO_0