Frozenverse/TLC5940
1
0
Fork 0
mirror of https://github.com/PaulStoffregen/Tlc5940 synced 2025-09-27 10:02:20 +02:00
Code Issues Packages Projects Releases Wiki Activity

Import Tlc5940 version r014_2

Browse Source
This commit is contained in:
PaulStoffregen
2014-06-07 06:33:39 -07:00
commit d765d114e0
31 changed files with 4609 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
tlc_shifts.h Normal file
View File

@@ -0,0 +1,81 @@
/* Copyright (c) 2009 by Alex Leone <acleone ~AT~ gmail.com>
This file is part of the Arduino TLC5940 Library.
The Arduino TLC5940 Library is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
The Arduino TLC5940 Library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with The Arduino TLC5940 Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef TLC_SHIFTS_H
#define TLC_SHIFTS_H
/** \file
TLC channel shifting functions. */
#include "Tlc5940.h"
uint16_t tlc_shiftUp(uint16_t zeroValue = 0);
uint16_t tlc_shiftDown(uint16_t topValue = 0);
/** \addtogroup ExtendedFunctions
\code #include "tlc_shifts.h" \endcode
- uint16_t tlc_shiftUp(uint16_t zeroValue = 0) - shifts all channel data
up (OUT0 becomes OUT1 ...) and returns OUT15
- uint16_t tlc_shiftDown(uint16_t topValue = 0) - shifts all channel data
down (OUT15 becomes OUT14 ...) and returns OUT0 */
/* @{ */
/** Shifts all the channel data up (OUT0 becomes OUT1 ...). Needs a
Tlc.update() after.
\param zeroValue the value of channel 0.
\returns the value that was shifted off the end (OUT15) */
uint16_t tlc_shiftUp(uint16_t zeroValue)
{
uint16_t topValue = ((uint16_t)(*tlc_GSData) << 4)
| (*(tlc_GSData + 1) >> 4);
uint8_t *p = tlc_GSData + 1;
while (p < tlc_GSData + NUM_TLCS * 24 - 1) {
*(p - 1) = (*p << 4) | (*(p + 1) >> 4);
*p = (*(p + 1) << 4) | (*(p + 2) >> 4);
p += 2;
}
*(tlc_GSData + NUM_TLCS * 24 - 2) = (*(tlc_GSData + NUM_TLCS * 24 - 1) << 4)
| ((zeroValue & 0x0F00) >> 8);
*(tlc_GSData + NUM_TLCS * 24 - 1) = (uint8_t)zeroValue;
return topValue;
}
/** Shifts all the channel data down (OUT 15 -> OUT 14 ...). Needs a
Tlc.update() after.
\param topValue the value of Tlc (n) channel 15.
\returns the value that was shifted off the bottom (OUT0) */
uint16_t tlc_shiftDown(uint16_t topValue)
{
uint8_t *p = tlc_GSData + NUM_TLCS * 24 - 2;
uint16_t zeroValue =
((uint16_t)(*(tlc_GSData + NUM_TLCS * 24 - 2) & 0x0F) << 8)
| *(tlc_GSData + NUM_TLCS * 24 - 1);
while (p > tlc_GSData) {
*(p + 1) = (*p >> 4) | (*(p - 1) << 4);
*p = (*(p - 1) >> 4) | (*(p - 2) << 4);
p -= 2;
}
*(tlc_GSData + 1) = (*tlc_GSData >> 4) | ((uint8_t)topValue << 4);
*tlc_GSData = topValue >> 4;
return zeroValue;
}
/* @} */
#endif