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Diffstat (limited to 'c/src/lib/libbsp/arm/raspberrypi/include/i2c.h')
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/include/i2c.h | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/c/src/lib/libbsp/arm/raspberrypi/include/i2c.h b/c/src/lib/libbsp/arm/raspberrypi/include/i2c.h deleted file mode 100644 index 4a8dbbf2ac..0000000000 --- a/c/src/lib/libbsp/arm/raspberrypi/include/i2c.h +++ /dev/null @@ -1,95 +0,0 @@ -/** - * @file i2c.h - * - * @ingroup raspberrypi_i2c - * - * @brief Raspberry Pi specific I2C definitions. - */ - -/* - * Copyright (c) 2014-2015 Andre Marques <andre.lousa.marques at gmail.com> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#ifndef LIBBSP_ARM_RASPBERRYPI_I2C_H -#define LIBBSP_ARM_RASPBERRYPI_I2C_H - -#include <dev/i2c/i2c.h> - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -/** - * @name I2C constants. - * - * @{ - */ - -/** - * @brief BSC controller core clock rate in Hz. - * - * This is set to 150 MHz as per the BCM2835 datasheet. - */ -#define BSC_CORE_CLK_HZ 150000000 - -/** - * @brief Default bus clock. - * - * This sets the bus with a 100 kHz clock speed. - */ -#define DEFAULT_BUS_CLOCK 100000 - -/** @} */ - -/** - * @name I2C directives. - * - * @{ - */ - -/** - * @brief Setups the Raspberry Pi GPIO header to activate the BSC I2C bus. - */ -extern void rpi_i2c_init(void); - -/** - * @brief Registers the Raspberry Pi BSC I2C bus with the - * Linux I2C User-Space API. - * - * @param[in] bus_path Path to the bus device file. - * @param[in] bus_clock Bus clock in Hz. - * - * @retval 0 Bus registered successfully. - * @retval <0 Could not register the bus. The return value is a negative - * errno code. - */ -extern int rpi_i2c_register_bus( - const char *bus_path, - uint32_t bus_clock -); - -/** - * @brief Setups the Raspberry Pi BSC I2C bus (located on the GPIO header) - * on the "/dev/i2c" device file, using the default bus clock. - * - * @retval 0 Bus configured and registered successfully. - * @retval <0 See @see rpi_i2c_register_bus(). - */ -static inline int rpi_setup_i2c_bus(void) -{ - rpi_i2c_init(); - - return rpi_i2c_register_bus("/dev/i2c", DEFAULT_BUS_CLOCK); -} - -/** @} */ - -#ifdef __cplusplus -} -#endif /* __cplusplus */ - -#endif /* LIBBSP_ARM_RASPBERRYPI_I2C_H */ |