micropython: add micropython component

components/language/micropython/tests/pyb/uart.py

@@ -0,0 +1,44 @@
+from pyb import UART
+
+# test we can correctly create by id
+for bus in (-1, 0, 1, 2, 5, 6):
+    try:
+        UART(bus, 9600)
+        print("UART", bus)
+    except ValueError:
+        print("ValueError", bus)
+
+uart = UART(1)
+uart = UART(1, 9600)
+uart = UART(1, 9600, bits=8, parity=None, stop=1)
+print(uart)
+
+uart.init(2400)
+print(uart)
+
+print(uart.any())
+print(uart.write("123"))
+print(uart.write(b"abcd"))
+print(uart.writechar(1))
+
+# make sure this method exists
+uart.sendbreak()
+
+# non-blocking mode
+uart = UART(1, 9600, timeout=0)
+print(uart.write(b"1"))
+print(uart.write(b"abcd"))
+print(uart.writechar(1))
+print(uart.read(100))
+
+# set rxbuf
+uart.init(9600, rxbuf=8)
+print(uart)
+uart.init(9600, rxbuf=0)
+print(uart)
+
+# set read_buf_len (legacy, use rxbuf instead)
+uart.init(9600, read_buf_len=4)
+print(uart)
+uart.init(9600, read_buf_len=0)
+print(uart)