examples/hwapi: Rename uasyncio to asyncio.

This work was funded through GitHub Sponsors.
Signed-off-by: NJim Mussared <jim.mussared@gmail.com>

examples/hwapi/soft_pwm2_uasyncio.py → examples/hwapi/soft_pwm2_asyncio.py

-# Like soft_pwm_uasyncio.py, but fading 2 LEDs with different phase.
+# Like soft_pwm_asyncio.py, but fading 2 LEDs with different phase.
 # Also see original soft_pwm.py.
-import uasyncio
+import asyncio
 from hwconfig import LED, LED2
 
 
@@ -9,10 +9,10 @@ async def pwm_cycle(led, duty, cycles):
     for i in range(cycles):
         if duty:
             led.value(1)
-            await uasyncio.sleep_ms(duty)
+            await asyncio.sleep_ms(duty)
         if duty_off:
             led.value(0)
-            await uasyncio.sleep_ms(duty_off)
+            await asyncio.sleep_ms(duty_off)
 
 
 async def fade_in_out(LED):
@@ -25,7 +25,7 @@ async def fade_in_out(LED):
             await pwm_cycle(LED, i, 2)
 
 
-loop = uasyncio.get_event_loop()
+loop = asyncio.get_event_loop()
 loop.create_task(fade_in_out(LED))
 loop.call_later_ms(800, fade_in_out(LED2))
 loop.run_forever()

examples/hwapi/soft_pwm_uasyncio.py → examples/hwapi/soft_pwm_asyncio.py

 # See original soft_pwm.py for detailed comments.
-import uasyncio
+import asyncio
 from hwconfig import LED
 
 
@@ -8,10 +8,10 @@ async def pwm_cycle(led, duty, cycles):
     for i in range(cycles):
         if duty:
             led.value(1)
-            await uasyncio.sleep_ms(duty)
+            await asyncio.sleep_ms(duty)
         if duty_off:
             led.value(0)
-            await uasyncio.sleep_ms(duty_off)
+            await asyncio.sleep_ms(duty_off)
 
 
 async def fade_in_out(LED):
@@ -24,5 +24,5 @@ async def fade_in_out(LED):
             await pwm_cycle(LED, i, 2)
 
 
-loop = uasyncio.get_event_loop()
+loop = asyncio.get_event_loop()
 loop.run_until_complete(fade_in_out(LED))