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authorDavid A. Mellis <d.mellis@arduino.cc>2007-10-06 13:02:43 +0000
committerDavid A. Mellis <d.mellis@arduino.cc>2007-10-06 13:02:43 +0000
commit179fcdbda432ff33a921a70994087b08b2a79caa (patch)
treedb62b71d303b5b13876773552451406b13cc66cf /core/libraries/Wire/utility/twi.h
Moving things around - creating the hardware directory and sticking all the avr code, etc. in there.
Diffstat (limited to 'core/libraries/Wire/utility/twi.h')
-rwxr-xr-xcore/libraries/Wire/utility/twi.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/core/libraries/Wire/utility/twi.h b/core/libraries/Wire/utility/twi.h
new file mode 100755
index 0000000..7ccbf5c
--- /dev/null
+++ b/core/libraries/Wire/utility/twi.h
@@ -0,0 +1,57 @@
+/*
+ twi.h - TWI/I2C library for Wiring & Arduino
+ Copyright (c) 2006 Nicholas Zambetti. All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef twi_h
+#define twi_h
+
+ #include <inttypes.h>
+
+ //#define ATMEGA8
+
+ #ifndef CPU_FREQ
+ #define CPU_FREQ 16000000L
+ #endif
+
+ #ifndef TWI_FREQ
+ #define TWI_FREQ 100000L
+ #endif
+
+ #ifndef TWI_BUFFER_LENGTH
+ #define TWI_BUFFER_LENGTH 32
+ #endif
+
+ #define TWI_READY 0
+ #define TWI_MRX 1
+ #define TWI_MTX 2
+ #define TWI_SRX 3
+ #define TWI_STX 4
+
+ void twi_init(void);
+ void twi_setAddress(uint8_t);
+ uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t);
+ uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t);
+ uint8_t twi_transmit(uint8_t*, uint8_t);
+ void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) );
+ void twi_attachSlaveTxEvent( void (*)(void) );
+ void twi_reply(uint8_t);
+ void twi_stop(void);
+ void twi_releaseBus(void);
+
+#endif
+