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 | | |
| 634 | |
| 635 | |
| 636 | == Specific Product / Model Notes == |
| 637 | |
| 638 | === Newport === |
| 639 | 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. |
| 640 | |
| 641 | === Laguna: GW2382 === |
| 642 | 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. |
| 643 | |
| 644 | === Laguna: Baud Rate === |
| 645 | The Laguna Family has the option of 2 clocks for the serial port, 24MHz and 14.7456MHz. |
| 646 | |
| 647 | By default the 24MHz clock is loaded. This clock creates drift for some baud rates as seen below. |
| 648 | |
| 649 | Because this drift is consistent on Laguna boards, Laguna to Laguna serial will work at all baud rates. |
| 650 | |
| 651 | Therefore, we suggest using rates below 115200. Please contact support at Gateworks if higher baud rates are required. |
| 652 | |
| 653 | [[Image(baudrates.jpg)]] |
| 654 | |