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com.spi.common.spinh
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{
--------------------------------------------
Filename: com.spi-common.spinh
Author: Jesse Burt
Description: Routines common to all SPI engines
Started Jun 27, 2022
Updated Oct 12, 2022
Copyright (c) 2022
See end of file for terms of use.
--------------------------------------------
}
VAR
long _spi_mode, _cpol
PUB mode(mode_nr): curr_mode
' Set SPI mode
' Valid values: 0..3
' Any other value returns the current setting
case mode_nr
0, 1:
_cpol := 0
2, 3:
_cpol := 1
other:
return _spi_mode
_spi_mode := mode_nr
PUB rd_byte{}: spi2byte
' Read byte from SPI bus
rdblock_lsbf(@spi2byte, 1)
PUB rdlong_lsbf{}: spi2long
' Read long from SPI bus, least-significant byte first
rdblock_lsbf(@spi2long, 4)
PUB rdlong_msbf{}: spi2long
' Read long from SPI bus, least-significant byte first
rdblock_msbf(@spi2long, 4)
PUB rdword_lsbf{}: spi2word
' Read word from SPI bus, least-significant byte first
rdblock_lsbf(@spi2word, 2)
PUB rdword_msbf{}: spi2word
' Read word from SPI bus, least-significant byte first
rdblock_msbf(@spi2word, 2)
PUB wr_byte(byte2spi)
' Write byte to SPI bus
wrblock_lsbf(@byte2spi, 1)
#ifndef HAS_WR_BYTEX
PUB wr_bytex(b, nr_bytes)
' Repeatedly write byte to bus
' b: byte to write
' nr_bytes: number of bytes to write
repeat nr_bytes
wrblock_lsbf(@b, 1)
#endif
PUB wrlong_lsbf(long2spi)
' Write long to SPI bus, least-significant byte first
wrblock_lsbf(@long2spi, 4)
PUB wrlong_msbf(long2spi)
' Write long to SPI bus, most-significant byte first
wrblock_msbf(@long2spi, 4)
PUB wrlongx_lsbf(l, nr_longs)
' Repeatedly write LSB-first long to bus
' l: long to write
' nr_longs: number of longs to write
repeat nr_longs
wrblock_lsbf(@l, 4)
PUB wrlongx_msbf(l, nr_longs)
' Repeatedly write MSB-first long to bus
' l: long to write
' nr_longs: number of longs to write
repeat nr_longs
wrblock_msbf(@l, 4)
PUB wrword_lsbf(word2spi)
' Write word to SPI bus, least-significant byte first
wrblock_lsbf(@word2spi, 2)
PUB wrword_msbf(word2spi)
' Write word to SPI bus, most-significant byte first
wrblock_msbf(@word2spi, 2)
#ifndef HAS_WRWORDX_LSBF
PUB wrwordx_lsbf(w, nr_words)
' Repeatedly write LSB-first word to bus
' w: word to write
' nr_words: number of words to write
repeat nr_words
wrblock_lsbf(@w, 2)
#endif
#ifndef HAS_WRWORDX_MSBF
PUB wrwordx_msbf(w, nr_words)
' Repeatedly write MSB-first word to bus
' w: word to write
' nr_words: number of words to write
repeat nr_words
wrblock_msbf(@w, 2)
#endif
DAT
{
Copyright 2022 Jesse Burt
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.
}