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pc程序 | |
``` | |
while True: | |
data = {"a":i} | |
# data = "topic-sensor-data-x" + "\r\n" | |
data = json.dumps(data) + "\r\n" | |
# data = "a" + "\r\n" | |
data_bytes = data.encode("utf-8") | |
ser.write(data_bytes) | |
time.sleep(0.1) | |
read_data = ser.readline() | |
print("from microbit: {}".format(read_data)) | |
i += 1 | |
``` | |
现象1: | |
程序 | |
``` | |
def get_topic_and_data(b): | |
try: | |
c = b'{"a": 0}\r\n'.strip() | |
r = c + b'\r\n' | |
uart.write(r) # uart.write(c + b'\r\n') | |
except: | |
pass | |
``` | |
输出 | |
``` | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
from microbit: b'{"a": 0}\r\n' | |
``` |
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最终解决方案:
pc:
microbit:
输出: