garudaonekh
commented
1 year ago After my further investigation, another byte is missing when the sensor value increase to 80%+(Humidity sensor). When I increase the baudrate, the number of missing bytes are more. However, I can't decrease it further as the sensor only minimum baudrate is 2400.
When I run code from REPL, I receive 9 bytes. anyhow, the missing one byte is ok. but if it missed two bytes. I can't figure out the real value of the sensor.
Here's the sample:
From REPL(The correct one, 9 bytes):
b'd\x03\x04\x02\xd9\x01/_:'
Normal one(8 bytes):
b'd\x04\x02\xd9\x012\x9f3'
When the humidity is above 80%(only 7 bytes):
b'd\x046\x013n\xfa'
Hi, I use UART 1(GPS Uart) to communicate with RS485 Modbus. It works fine on REPL(Run the code line by line)
But in main.py, It cannot read data properly(some bytes are missing and some are corrupt) even though I put sleep before reading or use while-loop. uart.any() returns 1. Buffer should not be an issue because the data to read is actually only 9 bytes. Try uasyncio also not help.
In my testing, if I use time.sleep or while loop after writing, the received data will have problem, that's why when I run write and then read in REPL, the received data is fine
here's my init code:
uart=UART(1,4800) uart.init(4800, bits=8, parity=None, stop=1)