Making Omega2 talks with SAMD21 (Arduino Zero)

György Farkas — Tue, 06 Aug 2019 12:40:23 GMT

@Suman-kumar-Jha One more time This was the originally installed '/sbin/yunbridge' file on Omega2(+) : root@Omega-5BE1:/# cat /sbin/yunbridge #!/bin/sh stty -F /dev/ttyS0 2500000 clocal cread cs8 -cstopb -parenb exec < /dev/ttyS0 exec > /dev/ttyS0 exec 2> /dev/ttyS0 askfirst bin/ash --login I've modified it because we can't set either 250000 (ie. 250,000 250 kBaud) or 2500000 (ie 2,500,000 2.5 MBaud) with the stty command and ttyS0 (UART0) is occupied by the Serial Console on Omega2(+) - so I tried to use ttyS1 (UART1) instead This is the modified '/sbin/yunbridge' file: root@Omega-5BE1:/# cat /sbin/yunbridge #!/bin/sh stty -F /dev/ttyS1 115200 clocal cread cs8 -cstopb -parenb exec < /dev/ttyS1 exec > /dev/ttyS1 exec 2> /dev/ttyS1 askfirst bin/ash --login That's it! I think 115200 Baud is a good choice. It's good for all - for Omega2, Arduino, Arduino Bridge, Arduino IDE, ... IMO the serial line speed is not the most important problem in this five-liner script now. BTW please try it what you want: root@Omega-5BE1:~# stty -F /dev/ttyS1 250000 stty: invalid argument ‘250000’ Try 'stty --help' for more information. root@Omega-5BE1:~# stty -F /dev/ttyS1 2500000 stty: /dev/ttyS1: unable to perform all requested operations root@Omega-5BE1:~# stty -F /dev/ttyS1 115200 root@Omega-5BE1:~# stty -F /dev/ttyS1 speed 115200 baud; line = 0; -brkint -imaxbel

[Omega2] Hardware PWM problem

Krzysztof Skiba — Sun, 04 Jun 2017 11:47:04 GMT

I did this: PWM0_SEND_DATA0 <- 0xAAAAAAAA (1010101010101....) PWM0_SEND_DATA1 <- 0xAAAAAAAA (1010101010101....) Clock 100kHz/2 - 50kHz And for 1% duty (for example): PWM0_HDURATION <- 500 PWM0_LDURATION <- 50000-PWM0_HDURATION It works. I have exactly 10ms step regulation. My rectification column power regulator is much closer Thanx!

Topics tagged with omega2 hardware

Making Omega2 talks with SAMD21 (Arduino Zero)

[Omega2] Hardware PWM problem