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Re: [Paparazzi-devel] Tracking antenna
From: |
marcus.wolschon |
Subject: |
Re: [Paparazzi-devel] Tracking antenna |
Date: |
Wed, 28 Oct 2009 11:14:36 +0100 |
User-agent: |
RoundCube Webmail/0.1b |
On Tue, 27 Oct 2009 16:41:23 -0700 (PDT), Todd Sandercock
> The big issue with the java api was trying to send the "0x00". you think
> its sent it properly but nothing worked with the servo controller. so i
> plugged 2 ftdi cables into each other and worked out that every time that
i
> sent a "0x00" it turned everything after it to garbage. If you have a fix
> that would be great!
You DO know that 0x00 is a signed integer?
Byte.MIN_VALUE in Java is -128 . That would be your unsigned 0x00 .
> The other thing with java is that there is no such unsigned variables. so
> when you are trying to send anything higher than 127 you have to use an
> int. DUMB!
Actually you do something like send((byte)((value + Byte.MIN_VALUE) &
0xFF))
Marcus
- [Paparazzi-devel] Tracking antenna, Jesus Martin Sanchez, 2009/10/26
- Re: [Paparazzi-devel] Tracking antenna, Roman Krashanitsa, 2009/10/28
- Re: [Paparazzi-devel] Tracking antenna, Todd Sandercock, 2009/10/28
- Re: [Paparazzi-devel] Tracking antenna, Roman Krashanitsa, 2009/10/28
- RE: [Paparazzi-devel] Tracking antenna, mark.griffin, 2009/10/30
- Re: [Paparazzi-devel] Tracking antenna, Todd Sandercock, 2009/10/30
- RE: [Paparazzi-devel] Tracking antenna, Todd Sandercock, 2009/10/31
- RE: [Paparazzi-devel] Tracking antenna, mark.griffin, 2009/10/31