Initial import of support files for all Digistump boards - Digispark, Pro, DigiX - including libraries, examples, tools, and other support files for the Arduino IDE

2025-11-03 13:04:48 -08:00 · 2014-12-19 08:45:50 -08:00
parent 97abdbf157
commit 7e7473a2d6
3567 changed files with 722870 additions and 0 deletions
--- a/hardware/digistump/avr/libraries/VirtualWire/util/crc16.h
+++ b/hardware/digistump/avr/libraries/VirtualWire/util/crc16.h
@@ -0,0 +1,103 @@
+/* Copyright (c) 2002, 2003, 2004  Marek Michalkiewicz
+   Copyright (c) 2005, 2007 Joerg Wunsch
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+   * Neither the name of the copyright holders nor the names of
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE. */
+
+//	Port to Energia / MPS430 by Yannick DEVOS XV4Y - (c) 2013
+//	http://xv4y.radioclub.asia/
+//	
+
+/* $Id: crc16.h 2136 2010-06-08 12:03:38Z joerg_wunsch $ */
+
+#ifndef _UTIL_CRC16_H_
+#define _UTIL_CRC16_H_
+
+#include <stdint.h>
+
+#define lo8(x) ((x)&0xff) 
+#define hi8(x) ((x)>>8)
+
+    uint16_t crc16_update(uint16_t crc, uint8_t a)
+    {
+	int i;
+
+	crc ^= a;
+	for (i = 0; i < 8; ++i)
+	{
+	    if (crc & 1)
+		crc = (crc >> 1) ^ 0xA001;
+	    else
+		crc = (crc >> 1);
+	}
+
+	return crc;
+    }
+
+    uint16_t crc_xmodem_update (uint16_t crc, uint8_t data)
+    {
+        int i;
+
+        crc = crc ^ ((uint16_t)data << 8);
+        for (i=0; i<8; i++)
+        {
+            if (crc & 0x8000)
+                crc = (crc << 1) ^ 0x1021;
+            else
+                crc <<= 1;
+        }
+
+        return crc;
+    }
+    uint16_t _crc_ccitt_update (uint16_t crc, uint8_t data)
+    {
+        data ^= lo8 (crc);
+        data ^= data << 4;
+
+        return ((((uint16_t)data << 8) | hi8 (crc)) ^ (uint8_t)(data >> 4) 
+                ^ ((uint16_t)data << 3));
+    }
+
+    uint8_t _crc_ibutton_update(uint8_t crc, uint8_t data)
+    {
+	uint8_t i;
+
+	crc = crc ^ data;
+	for (i = 0; i < 8; i++)
+	{
+	    if (crc & 0x01)
+	        crc = (crc >> 1) ^ 0x8C;
+	    else
+	        crc >>= 1;
+	}
+
+	return crc;
+    }
+
+
+#endif /* _UTIL_CRC16_H_ */