Changes between Version 4 and Version 5 of serial


Ignore:
Timestamp:
11/30/2017 11:56:57 AM (9 months ago)
Author:
Tim Harvey
Comment:

moved product/model specific details lower

Legend:

Unmodified
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  • serial

    v4 v5  
    222222 * make sure both ends are RS232 compliant (as opposed to TTL level logic)
    223223
    224 == Specific Model Notes ==
    225 
    226 === Newport ===
    227 Most Newport products have a flexible [http://dev.gateworks.com/datasheets/sp335e.pdf MaxLinear SP335E] RS-232/RS-485/RS-422 transceiver which is software configurable. For these boards the Bootloader {{{hwconfig}}} environment variable can be used to configure the functionality of the serial ports at power-up. See [wiki:newport/#hwconfig Newport bootloader hwconfig] for more details.
    228 
    229 === Laguna: GW2382 ===
    230 J8 is an expansion header and is by default mapped to /dev/ttyS2.  J2 and J4 are connected to /dev/ttyS0.  The GPS is hooked to /dev/ttyS1.
    231 
    232 === Laguna: Baud Rate ===
    233 The Laguna Family has the option of 2 clocks for the serial port, 24MHz and 14.7456MHz.
    234 
    235 By default the 24MHz clock is loaded.  This clock creates drift for some baud rates as seen below.
    236 
    237 Because this drift is consistent on Laguna boards, Laguna to Laguna serial will work at all baud rates.
    238 
    239 Therefore, we suggest using rates below 115200. Please contact support at Gateworks if higher baud rates are required.
    240 
    241 [[Image(baudrates.jpg)]]
    242 
    243224
    244225[=#rs485]
     
    651632        ...
    652633}}}
     634
     635
     636== Specific Product / Model Notes ==
     637
     638=== Newport ===
     639Most Newport products have a flexible [http://dev.gateworks.com/datasheets/sp335e.pdf MaxLinear SP335E] RS-232/RS-485/RS-422 transceiver which is software configurable. For these boards the Bootloader {{{hwconfig}}} environment variable can be used to configure the functionality of the serial ports at power-up. See [wiki:newport/#hwconfig Newport bootloader hwconfig] for more details.
     640
     641=== Laguna: GW2382 ===
     642J8 is an expansion header and is by default mapped to /dev/ttyS2.  J2 and J4 are connected to /dev/ttyS0.  The GPS is hooked to /dev/ttyS1.
     643
     644=== Laguna: Baud Rate ===
     645The Laguna Family has the option of 2 clocks for the serial port, 24MHz and 14.7456MHz.
     646
     647By default the 24MHz clock is loaded.  This clock creates drift for some baud rates as seen below.
     648
     649Because this drift is consistent on Laguna boards, Laguna to Laguna serial will work at all baud rates.
     650
     651Therefore, we suggest using rates below 115200. Please contact support at Gateworks if higher baud rates are required.
     652
     653[[Image(baudrates.jpg)]]
     654