| \ See license at end of file |
| purpose: Generic low-level SPI interface |
| |
| defer spi-start ( -- ) \ Init the SPI controller |
| defer spi-cs-on ( -- ) \ Begin SPI transaction |
| defer spi-cs-off ( -- ) \ End SPI transaction |
| defer spi-out ( b -- ) \ Write a byte to the SPI bus |
| defer spi-in ( -- b ) \ Read a byte from the SPI bus |
| |
| 1 value spi-us ( -- n ) \ Approximate time in uS to do spi-out |
| \ Used to optimize some routines |
| |
| \ LICENSE_BEGIN |
| \ Copyright (c) 2009 FirmWorks |
| \ |
| \ Permission is hereby granted, free of charge, to any person obtaining |
| \ a copy of this software and associated documentation files (the |
| \ "Software"), to deal in the Software without restriction, including |
| \ without limitation the rights to use, copy, modify, merge, publish, |
| \ distribute, sublicense, and/or sell copies of the Software, and to |
| \ permit persons to whom the Software is furnished to do so, subject to |
| \ the following conditions: |
| \ |
| \ The above copyright notice and this permission notice shall be |
| \ included in all copies or substantial portions of the Software. |
| \ |
| \ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| \ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| \ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| \ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| \ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| \ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| \ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| \ |
| \ LICENSE_END |