diff options
Diffstat (limited to 'firmware/target/arm/tcc77x/i2c-target.h')
-rw-r--r-- | firmware/target/arm/tcc77x/i2c-target.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/firmware/target/arm/tcc77x/i2c-target.h b/firmware/target/arm/tcc77x/i2c-target.h new file mode 100644 index 0000000000..4600b8a576 --- /dev/null +++ b/firmware/target/arm/tcc77x/i2c-target.h | |||
@@ -0,0 +1,37 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2008 by Rob Purchase | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | #ifndef I2C_TARGET_H | ||
20 | #define I2C_TARGET_H | ||
21 | |||
22 | /* Definitions for the TCC77X I2C bus */ | ||
23 | |||
24 | #define SDA_BIT (1<<10) | ||
25 | #define SCL_BIT (1<<11) | ||
26 | |||
27 | #define SCL (GPIOB & SCL_BIT) | ||
28 | #define SCL_HI GPIOB |= SCL_BIT | ||
29 | #define SCL_LO GPIOB &= ~SCL_BIT | ||
30 | |||
31 | #define SDA (GPIOB & SDA_BIT) | ||
32 | #define SDA_HI GPIOB |= SDA_BIT | ||
33 | #define SDA_LO GPIOB &= ~SDA_BIT | ||
34 | #define SDA_INPUT GPIOB_DIR &= ~SDA_BIT | ||
35 | #define SDA_OUTPUT GPIOB_DIR |= SDA_BIT | ||
36 | |||
37 | #endif /* I2C_TARGET_H */ | ||