diff --git a/tests/extmod_hardware/machine_Counter.py b/tests/extmod_hardware/machine_Counter.py
index 65340ad829ff..93300a9271cf 100644
--- a/tests/extmod_hardware/machine_Counter.py
+++ b/tests/extmod_hardware/machine_Counter.py
@@ -12,12 +12,16 @@
     raise SystemExit
 
 
-FREQ = 500_000  # 5_000  # Hz
+FREQ = 500_000  # 500  # Hz
 FILTER_NS = 25  # ns
-SECONDS = 2
+SECONDS = 1
 MATCH = FREQ * SECONDS  # 2 seconds counting time
 # MATCH = 75
-
+MATCH_1000 = round(MATCH / 1000 * 1.5)  # match margin per thousand
+if MATCH_1000 == 0:
+    MATCH_1000 = 1
+    
+print("MATCH:", MATCH, "MATCH_1000:", MATCH_1000)
 
 # Configure pins based on the target.
 if "esp32" in sys.platform:
@@ -253,7 +257,7 @@ def callback_timer(timer):
         pass
     print(counter, "value:", counter.value())
     assert counter.value() >= MATCH
-    assert counter.value() < MATCH + MATCH * 0.5
+    assert counter.value() < MATCH + MATCH_1000
     print("Ok.")
     print()
     counter.deinit()
@@ -275,35 +279,35 @@ def callback_timer(timer):
     print(counter, "value:", counter.value())
     assert is_callback == True
     assert counter.value() >= MATCH
-    assert counter.value() < MATCH + MATCH * 0.5
+    assert counter.value() < MATCH + MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
 
     is_callback = False
-    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=MATCH + 100 * 3)
+    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=MATCH + 300)
     print(counter, "value:", counter.value())
     pwm.init(freq=FREQ)
-    while counter.value() < MATCH + 100 * 3:
+    while counter.value() < MATCH + 300:
         pass
     print(counter, "value:", counter.value())
     assert is_callback == True
-    assert counter.value() >= MATCH + 100 * 3
-    assert counter.value() < MATCH + 100 * 3 + MATCH * 0.5
+    assert counter.value() >= MATCH + 300
+    assert counter.value() < MATCH + 300 + MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
 
     is_callback = False
-    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=MATCH + 100 * 5)
+    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=MATCH + 500)
     print(counter, "value:", counter.value())
     pwm.init(freq=FREQ)
-    while counter.value() < MATCH + 100 * 5:
+    while counter.value() < MATCH + 500:
         pass
     print(counter, "value:", counter.value())
     assert is_callback == True
-    assert counter.value() >= MATCH + 100 * 5
-    assert counter.value() < MATCH + 100 * 5 + MATCH * 0.5
+    assert counter.value() >= MATCH + 500
+    assert counter.value() < MATCH + 500 + MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -312,15 +316,15 @@ def callback_timer(timer):
     out2(0)
 
     is_callback = False
-    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=MATCH + 100 * 3)
+    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=MATCH + 300)
     print(counter, "value:", counter.value())
     pwm.init(freq=FREQ)
-    while counter.value() > MATCH + 100 * 3:
+    while counter.value() > MATCH + 300:
         pass
     print(counter, "value:", counter.value())
     assert is_callback == True
-    assert counter.value() <= MATCH + 100 * 3
-    assert counter.value() > MATCH + 100 * 3 -MATCH * 0.5
+    assert counter.value() <= MATCH + 300
+    assert counter.value() > MATCH + 300 - MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -334,7 +338,7 @@ def callback_timer(timer):
     print(counter, "value:", counter.value())
     assert is_callback == True
     assert counter.value() <= MATCH
-    assert counter.value() > MATCH -MATCH * 0.5
+    assert counter.value() > MATCH - MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -348,7 +352,7 @@ def callback_timer(timer):
     print(counter, "value:", counter.value())
     assert is_callback == True
     assert counter.value() <= 0
-    assert counter.value() > -MATCH * 0.5
+    assert counter.value() > -MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -364,7 +368,7 @@ def callback_timer(timer):
     #     print(counter, "value:", counter.value())
     #     assert is_callback == True
     #     assert counter.value() <= 0
-    #     assert counter.value() > -MATCH * 0.5
+    #     assert counter.value() > -MATCH_1000
     #     assert counter.value() == counter1.value()
     #     print("Ok.")
     #     print()
@@ -380,35 +384,35 @@ def callback_timer(timer):
     print(counter, "value:", counter.value())
     assert is_callback == True
     assert counter.value() <= -MATCH
-    assert counter.value() > -(MATCH + MATCH * 0.5)
+    assert counter.value() > -(MATCH + MATCH_1000)
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
 
     is_callback = False
-    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=-(MATCH + 100 * 3))
+    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=-(MATCH + 300))
     print(counter, "value:", counter.value())
     pwm.init(freq=FREQ)
-    while counter.value() > -(MATCH + 100 * 3):
+    while counter.value() > -(MATCH + 300):
         pass
     print(counter, "value:", counter.value())
     assert is_callback == True
-    assert counter.value() <= -(MATCH + 100 * 3)
-    assert counter.value() > -(MATCH + 100 * 3 + MATCH * 0.5)
+    assert counter.value() <= -(MATCH + 300)
+    assert counter.value() > -(MATCH + 300 + MATCH_1000)
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
 
     is_callback = False
-    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=-(MATCH + 100 * 5))
+    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=-(MATCH + 500))
     print(counter, "value:", counter.value())
     pwm.init(freq=FREQ)
-    while counter.value() > -(MATCH + 100 * 5):
+    while counter.value() > -(MATCH + 500):
         pass
     print(counter, "value:", counter.value())
     assert is_callback == True
-    assert counter.value() <= -(MATCH + 100 * 5)
-    assert counter.value() > -(MATCH + 100 * 5 + MATCH * 0.5)
+    assert counter.value() <= -(MATCH + 500)
+    assert counter.value() > -(MATCH + 500 + MATCH_1000)
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -417,15 +421,15 @@ def callback_timer(timer):
     out2(1)
 
     is_callback = False
-    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=-(MATCH + 100 * 3))
+    counter.irq(handler=callback_pwm_deinit, trigger=Counter.IRQ_MATCH, value=-(MATCH + 300))
     print(counter, "value:", counter.value())
     pwm.init(freq=FREQ)
-    while counter.value() < -(MATCH + 100 * 3):
+    while counter.value() < -(MATCH + 300):
         pass
     print(counter, "value:", counter.value())
     assert is_callback == True
-    assert counter.value() >= -(MATCH + 100 * 3)
-    assert counter.value() < -(MATCH + 100 * 3 -MATCH * 0.5)
+    assert counter.value() >= -(MATCH + 300)
+    assert counter.value() < -(MATCH + 300 - MATCH_1000)
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -439,7 +443,7 @@ def callback_timer(timer):
     print(counter, "value:", counter.value())
     assert is_callback == True
     assert counter.value() >= -MATCH
-    assert counter.value() < -(MATCH -MATCH * 0.5)
+    assert counter.value() < -(MATCH - MATCH_1000)
     assert counter.value() == counter1.value()
     print("Ok.")
     print()
@@ -455,7 +459,7 @@ def callback_timer(timer):
     print(counter, "value:", counter.value())
     assert is_callback == True
     assert counter.value() >= 0
-    assert counter.value() < MATCH * 0.5
+    assert counter.value() < MATCH_1000
     assert counter.value() == counter1.value()
     print("Ok.")
     print()