Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-14 Thread Rob
Manuel Reimer manuel.nulldev...@nurfuerspam.de wrote: On 10/06/2013 12:17 AM, Rob wrote: That is why I suspect that it cannot run 50 baud. What happens when you try stty 50 /dev/tty...? [root@alarm dev]# stty 50 /dev/ttyAPP0 [root@alarm dev]# stty /dev/ttyAPP0 speed 50 baud; line = 0;

Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-08 Thread David Woolley
On 08/10/13 01:15, Brian Inglis wrote: Normally with speeds below 300 (150, 110, 75, 50) bps both interfaces need to be configured to use two stop bits to avoid framing errors. Many USB converters (and probably other serial interfaces) nowadays, lack support for low speeds, and possibly also

Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-08 Thread Rob
Rob van der Putten r...@sput.nl wrote: Using 8 bits + parity prevents framing errors but introduces parity errors instead; -+ +---+---+---+---+---+---+---+---+---+- | S | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | P | S +---+---+---+---+---+---+---+---+---+---+

[ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-05 Thread Manuel Reimer
Hello, I wanto to keep the system clock of my embedded Linux board (Olinuxino Maxi, based on iMX233) up to date using the DCF77 signal. To do so, I wired the receiver to the RX line of the UART port and symlinked it to /dev/refclock-1. The receiver works well and delivers a good signal. I

Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-05 Thread Rob
Manuel Reimer manuel.nulldev...@nurfuerspam.de wrote: Hello, I wanto to keep the system clock of my embedded Linux board (Olinuxino Maxi, based on iMX233) up to date using the DCF77 signal. To do so, I wired the receiver to the RX line of the UART port and symlinked it to /dev/refclock-1.

Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-05 Thread Manuel Reimer
On 10/05/2013 03:46 PM, Rob wrote: I use: server 127.127.8.0 mode 6 It works fine for me. I tried that and I still get the same errors. Then I rewired my receiver to send out *noninverted* signals. Now I get: Oct 05 17:21:58 alarm ntpd[1075]: parse: convert_rawdcf: parity check FAILED for

Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-05 Thread Rob
Manuel Reimer manuel.nulldev...@nurfuerspam.de wrote: On 10/05/2013 03:46 PM, Rob wrote: I use: server 127.127.8.0 mode 6 It works fine for me. I tried that and I still get the same errors. Then I rewired my receiver to send out *noninverted* signals. Now I get: Oct 05 17:21:58 alarm

Re: [ntp:questions] convert_rawdcf: parity check FAILED on Olinuxino Maxi (iMX233)

2013-10-05 Thread Manuel Reimer
On 10/05/2013 05:55 PM, Rob wrote: Can the serial port run at 50 baud? This is a requirement for this method of dcf parsing. Maybe the length of the divider register is insufficient to go that low. Maybe. I could ask the vendor about that. The interesting thing is, that the error message