motion library for mpu6050, mpu9250 and etc, supports i2c and spi
Diff: mbed_i2c.h
- Revision:
- 0:814475fdc553
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed_i2c.h Tue Jul 05 07:19:59 2016 +0000 @@ -0,0 +1,81 @@ + +/****************************************************************************** + * $Id: mbed_i2c.h $ + *****************************************************************************/ +/** + * @defgroup MBED_System_Layer MBED System Layer + * @brief MBED System Layer APIs. + * To interface with any platform, eMPL needs access to various + * system layer functions. + * + * @{ + * @file mbed_i2c.h + * @brief Serial communication functions needed by eMPL to + * communicate to the MPU devices. + * @details This driver assumes that eMPL is with a sub-master clock set + * to 20MHz. The following MBEDs are supported: + */ +#ifndef _MBED_I2C_H_ +#define _MBED_I2C_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include "i2c_api.h" + +void mbed_i2c_init(PinName sda, PinName scl); + +/** + * @brief Set up the I2C port and configure the MBED as the master. + * @return 0 if successful. + */ +void mbed_i2c_enable(void); +/** + * @brief Disable I2C communication. + * This function will disable the I2C hardware and should be called prior to + * entering low-power mode. + * @return 0 if successful. + */ +void mbed_i2c_disable(void); + +/** + * @brief Write to a device register. + * + * @param[in] slave_addr Slave address of device. + * @param[in] reg_addr Slave register to be written to. + * @param[in] length Number of bytes to write. + * @param[out] data Data to be written to register. + * + * @return 0 if successful. + */ +int mbed_i2c_write(unsigned char slave_addr, + unsigned char reg_addr, + unsigned char length, + unsigned char const *data); +/** + * @brief Read from a device. + * + * @param[in] slave_addr Slave address of device. + * @param[in] reg_addr Slave register to be read from. + * @param[in] length Number of bytes to read. + * @param[out] data Data from register. + * + * @return 0 if successful. + */ +int mbed_i2c_read(unsigned char slave_addr, + unsigned char reg_addr, + unsigned char length, + unsigned char *data); + +int mbed_i2c_clear(PinName sda, PinName scl); + +#ifdef __cplusplus +} +#endif + +#endif /* _MBED_I2C_H_ */ + +/** + * @} + */