Difference between revisions of "User:JanosA"

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== About Me ==
 
I am IP Network and Datacenter engineer, currently I'm working for an Internet Service Provider in Hungary.
 
I am IP Network and Datacenter engineer, currently I'm working for an Internet Service Provider in Hungary.
  
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* Data logger for Saia Sbus based intelligent power meters.
 
* Data logger for Saia Sbus based intelligent power meters.
  
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== My works comitted to ArmadeuS project ==
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== RS485 ==
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* [[RS-485]] for APF28/iMX28 mxs-auart and busybox stty patch
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Mini HOWTOs for my APF28/iMX28 mxs-auart and busybox stty patches.
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* [[OneWire GPIO bus Master]] for APF28DEV
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* Setup APF28 serial port for RS485 communication:
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<pre class=apf>
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# stty -F /dev/ttySP0 raw
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# stty -F /dev/ttySP0 -echo -echoe -echok
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# stty -F /dev/ttySP0 rs485
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</pre>
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* Set extra delays for TXEN/RTS signaling before and after the transmitted packet (in microseconds):
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<pre class=apf>
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# stty -F /dev/ttySP0 rs485delaybefore 100
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# stty -F /dev/ttySP0 rs485delayafter 100
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</pre>
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* To get current RS485 parameters. (If the port device supports the RS485 options you will see the last two lines)
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<pre class=apf>
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# stty -F /dev/ttySP0
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speed 9600 baud; line = 0;
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intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
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eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R;
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werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0;
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-brkint -imaxbel
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rs485 -rs485rtsonsend -rs485rtsaftersend -rs485rxduringtx
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rs485delaybefore = 100; rs485delayafter = 100; rs485delaylastchartx = 1250;
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</pre>
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Please note:
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* You can't set the "rs485delaylastchartx" parameter, it's calculated automatically from the baudrate.
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Special notes only for APF28/iMX28 mxs-auart driver:
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* All delays are in microseconds.
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* The "rs485delaylastchartx" parameter is not used in DMA mode.
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* The parameters: "rs485rtsonsend" "rs485rtsaftersend" "rs485rxduringtx" are not used.
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Latest revision as of 14:39, 19 May 2013

About Me

I am IP Network and Datacenter engineer, currently I'm working for an Internet Service Provider in Hungary.

My hobby is programming embedded systems and creating my own small electronic boards.

Skills

  • Assembly programming: PIC 8bit family
  • C programming: PIC 8bit / PIC32MX family, Linux
  • Perl, PHP, Javascript, Html programming with MySQL
  • Linux system administration
  • RS-232/485 serial communications: Ascii, Modbus, Saia Sbus, etc.
  • IP networking

My ArmadeuS plans (APF28 based)

  • Creating an universal home automation hardware for my friends, with easy programming in perl or PHP. :)
  • Datacenter temperature monitoring, with RS-485 and OneWire communications.
  • Data logger for Saia Sbus based intelligent power meters.

My works comitted to ArmadeuS project

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