Pyboard UART.sendbreak
I used the UART1 on pyboard,the baudrate is 19200bps, when used the UART.sendbreak() function, the 13 bit delay is 677uS, but actual is 520uS in oscillograph.How to solve this issue.Thanks!
ESP32 Uart TX-error using UART.sendbreak()
I'm using the UART-class to send messages over serial line.
Any message is terminated with the 'BREAK'-signal.
It works so far sending more then 1 char's.
But in that special case sending only 1 char terminated with the UART.sendbreak() call,
the leading char will be overwritten or destructed.
Also the call UART.wait_tx_done(100) before sending the BREAK-signal doesn't help.
Only the call: time.sleep(0.002) before UART.sendbreak() will help a bit.
Used code:
...
uart1 = UART(1, baudrate=9600)
while True:
uart1.write('A')
while uart1.wait_tx_done(100) == False:
pass
# !! sleep required for 1Char- and break-send !!
time.sleep(0.002)
uart1.sendbreak()
time.sleep(1)
Used environment:
ESP32 on Wipy3.0
See attached plots for the resulting streams.
Can you fix this problem in further releases?
