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-rw-r--r--tests/pyb/uart.py7
-rw-r--r--tests/pyb/uart.py.exp8
2 files changed, 13 insertions, 2 deletions
diff --git a/tests/pyb/uart.py b/tests/pyb/uart.py
index cb0be91c0..838dd9cfc 100644
--- a/tests/pyb/uart.py
+++ b/tests/pyb/uart.py
@@ -23,3 +23,10 @@ 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))
diff --git a/tests/pyb/uart.py.exp b/tests/pyb/uart.py.exp
index ea300c90c..4be50d328 100644
--- a/tests/pyb/uart.py.exp
+++ b/tests/pyb/uart.py.exp
@@ -12,9 +12,13 @@ UART XB
UART YA
UART YB
ValueError Z
-UART(1, baudrate=9600, bits=8, parity=None, stop=1, timeout=1000, timeout_char=0, read_buf_len=64)
-UART(1, baudrate=2400, bits=8, parity=None, stop=1, timeout=1000, timeout_char=0, read_buf_len=64)
+UART(1, baudrate=9600, bits=8, parity=None, stop=1, timeout=1000, timeout_char=2, read_buf_len=64)
+UART(1, baudrate=2400, bits=8, parity=None, stop=1, timeout=1000, timeout_char=6, read_buf_len=64)
0
3
4
None
+1
+4
+None
+None