tests/ports/rp2: Add simple rp2-specific UART test.

To test construction of UART instances.

Signed-off-by: Damien George <[email protected]>

Author: dpgeorge

tests/ports/rp2/rp2_uart.py

@@ -0,0 +1,10 @@
+# Test construction of machine.UART objects.
+
+import sys
+from machine import UART
+
+print(UART(0, tx=0, rx=1))
+
+if "RP2350" in sys.implementation._machine:
+    # Test that UART can be constructed using other tx/rx pins.
+    UART(0, tx=2, rx=3)

tests/ports/rp2/rp2_uart.py.exp

@@ -0,0 +1 @@
+UART(0, baudrate=115200, bits=8, parity=None, stop=1, tx=0, rx=1, txbuf=256, rxbuf=256, timeout=0, timeout_char=1, invert=None, irq=0)