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Diffstat (limited to 'libsensors/mlsdk/platform/include/mlsl.h')
| -rw-r--r-- | libsensors/mlsdk/platform/include/mlsl.h | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/libsensors/mlsdk/platform/include/mlsl.h b/libsensors/mlsdk/platform/include/mlsl.h new file mode 100644 index 0000000..535d117 --- /dev/null +++ b/libsensors/mlsdk/platform/include/mlsl.h @@ -0,0 +1,290 @@ +/* + $License: + Copyright 2011 InvenSense, Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + $ + */ + +#ifndef __MLSL_H__ +#define __MLSL_H__ + +/** + * @defgroup MLSL + * @brief Motion Library - Serial Layer. + * The Motion Library System Layer provides the Motion Library + * with the communication interface to the hardware. + * + * The communication interface is assumed to support serial + * transfers in burst of variable length up to + * SERIAL_MAX_TRANSFER_SIZE. + * The default value for SERIAL_MAX_TRANSFER_SIZE is 128 bytes. + * Transfers of length greater than SERIAL_MAX_TRANSFER_SIZE, will + * be subdivided in smaller transfers of length <= + * SERIAL_MAX_TRANSFER_SIZE. + * The SERIAL_MAX_TRANSFER_SIZE definition can be modified to + * overcome any host processor transfer size limitation down to + * 1 B, the minimum. + * An higher value for SERIAL_MAX_TRANSFER_SIZE will favor + * performance and efficiency while requiring higher resource usage + * (mostly buffering). A smaller value will increase overhead and + * decrease efficiency but allows to operate with more resource + * constrained processor and master serial controllers. + * The SERIAL_MAX_TRANSFER_SIZE definition can be found in the + * mlsl.h header file and master serial controllers. + * The SERIAL_MAX_TRANSFER_SIZE definition can be found in the + * mlsl.h header file. + * + * @{ + * @file mlsl.h + * @brief The Motion Library System Layer. + * + */ + +#include "mltypes.h" +#include <linux/mpu.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * NOTE : to properly support Yamaha compass reads, + * the max transfer size should be at least 9 B. + * Length in bytes, typically a power of 2 >= 2 + */ +#define SERIAL_MAX_TRANSFER_SIZE 128 + +#ifndef __KERNEL__ +/** + * inv_serial_open() - used to open the serial port. + * @port The COM port specification associated with the device in use. + * @sl_handle a pointer to the file handle to the serial device to be open + * for the communication. + * This port is used to send and receive data to the device. + * + * This function is called by inv_serial_start(). + * Unlike previous MPL Software releases, explicitly calling + * inv_serial_start() is mandatory to instantiate the communication + * with the device. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_open(char const *port, void **sl_handle); + +/** + * inv_serial_close() - used to close the serial port. + * @sl_handle a file handle to the serial device used for the communication. + * + * This port is used to send and receive data to the device. + * + * This function is called by inv_serial_stop(). + * Unlike previous MPL Software releases, explicitly calling + * inv_serial_stop() is mandatory to properly shut-down the + * communication with the device. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_close(void *sl_handle); + +/** + * inv_serial_reset() - used to reset any buffering the driver may be doing + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_reset(void *sl_handle); +#endif + +/** + * inv_serial_single_write() - used to write a single byte of data. + * @sl_handle pointer to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @register_addr Register address to write. + * @data Single byte of data to write. + * + * It is called by the MPL to write a single byte of data to the MPU. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_single_write( + void *sl_handle, + unsigned char slave_addr, + unsigned char register_addr, + unsigned char data); + +/** + * inv_serial_write() - used to write multiple bytes of data to registers. + * @sl_handle a file handle to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @register_addr Register address to write. + * @length Length of burst of data. + * @data Pointer to block of data. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_write( + void *sl_handle, + unsigned char slave_addr, + unsigned short length, + unsigned char const *data); + +/** + * inv_serial_read() - used to read multiple bytes of data from registers. + * @sl_handle a file handle to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @register_addr Register address to read. + * @length Length of burst of data. + * @data Pointer to block of data. + * + * returns INV_SUCCESS == 0 if successful; a non-zero error code otherwise. + */ +inv_error_t inv_serial_read( + void *sl_handle, + unsigned char slave_addr, + unsigned char register_addr, + unsigned short length, + unsigned char *data); + +/** + * inv_serial_read_mem() - used to read multiple bytes of data from the memory. + * This should be sent by I2C or SPI. + * + * @sl_handle a file handle to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @mem_addr The location in the memory to read from. + * @length Length of burst data. + * @data Pointer to block of data. + * + * returns INV_SUCCESS == 0 if successful; a non-zero error code otherwise. + */ +inv_error_t inv_serial_read_mem( + void *sl_handle, + unsigned char slave_addr, + unsigned short mem_addr, + unsigned short length, + unsigned char *data); + +/** + * inv_serial_write_mem() - used to write multiple bytes of data to the memory. + * @sl_handle a file handle to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @mem_addr The location in the memory to write to. + * @length Length of burst data. + * @data Pointer to block of data. + * + * returns INV_SUCCESS == 0 if successful; a non-zero error code otherwise. + */ +inv_error_t inv_serial_write_mem( + void *sl_handle, + unsigned char slave_addr, + unsigned short mem_addr, + unsigned short length, + unsigned char const *data); + +/** + * inv_serial_read_fifo() - used to read multiple bytes of data from the fifo. + * @sl_handle a file handle to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @length Length of burst of data. + * @data Pointer to block of data. + * + * returns INV_SUCCESS == 0 if successful; a non-zero error code otherwise. + */ +inv_error_t inv_serial_read_fifo( + void *sl_handle, + unsigned char slave_addr, + unsigned short length, + unsigned char *data); + +/** + * inv_serial_write_fifo() - used to write multiple bytes of data to the fifo. + * @sl_handle a file handle to the serial device used for the communication. + * @slave_addr I2C slave address of device. + * @length Length of burst of data. + * @data Pointer to block of data. + * + * returns INV_SUCCESS == 0 if successful; a non-zero error code otherwise. + */ +inv_error_t inv_serial_write_fifo( + void *sl_handle, + unsigned char slave_addr, + unsigned short length, + unsigned char const *data); + +#ifndef __KERNEL__ +/** + * inv_serial_read_cfg() - used to get the configuration data. + * @cfg Pointer to the configuration data. + * @len Length of the configuration data. + * + * Is called by the MPL to get the configuration data + * used by the motion library. + * This data would typically be saved in non-volatile memory. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_read_cfg(unsigned char *cfg, unsigned int len); + +/** + * inv_serial_write_cfg() - used to save the configuration data. + * @cfg Pointer to the configuration data. + * @len Length of the configuration data. + * + * Is called by the MPL to save the configuration data used by the + * motion library. + * This data would typically be saved in non-volatile memory. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_write_cfg(unsigned char *cfg, unsigned int len); + +/** + * inv_serial_read_cal() - used to get the calibration data. + * @cfg Pointer to the calibration data. + * @len Length of the calibration data. + * + * It is called by the MPL to get the calibration data used by the + * motion library. + * This data is typically be saved in non-volatile memory. + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_read_cal(unsigned char *cal, unsigned int len); + +/** + * inv_serial_write_cal() - used to save the calibration data. + * + * @cfg Pointer to the calibration data. + * @len Length of the calibration data. + * + * It is called by the MPL to save the calibration data used by the + * motion library. + * This data is typically be saved in non-volatile memory. + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_write_cal(unsigned char *cal, unsigned int len); + +/** + * inv_serial_get_cal_length() - Get the calibration length from the storage. + * @len lenght to be returned + * + * returns INV_SUCCESS if successful, a non-zero error code otherwise. + */ +inv_error_t inv_serial_get_cal_length(unsigned int *len); +#endif +#ifdef __cplusplus +} +#endif +/** + * @} + */ +#endif /* __MLSL_H__ */ |