Break condition for TX Uart in F103

[P M]

Posted on April 12, 2018 at 14:15

Hi all,

To start with, I am using Peripheral libs for my UART driver.

I am trying to wake up a RN2483 LoRa module from its sleep mode. I have on the manual that I need to produce a break condition followed by am 0x55. Paragraph on the documentation says:

'...To do this, the host system needs to transmit to the module a break condition followed by a 0x55 character at the new baud rate. The auto-baud detection mechanism can also be triggered during Sleep to wake the module up before the predetermined time has expired.'

URL: 

http://ww1.microchip.com/downloads/en/DeviceDoc/40001784B.pdf

 

So far I have tried, as seen in some arduino forums, to put the tx pin to 0 for about 10, 20 and 100msecs and then put it to 1. After that, sending 0x55. But module keeps sleeping after that.

Do you know how I can do that?