| /**************************************************************************** |
| * drivers/sensors/xen1210.h |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you 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 __DRIVERS_SENSORS_XEN1210_H |
| #define __DRIVERS_SENSORS_XEN1210_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <nuttx/wdog.h> |
| #include <nuttx/clock.h> |
| #include <nuttx/wqueue.h> |
| #include <nuttx/semaphore.h> |
| #include <nuttx/sensors/xen1210.h> |
| |
| #if defined(CONFIG_SENSORS_XEN1210) |
| |
| /**************************************************************************** |
| * Pre-processor Definitions |
| ****************************************************************************/ |
| |
| /* Driver support ***********************************************************/ |
| |
| /* This format is used to construct the /dev/mag[n] device driver path. |
| * It is defined here so that it will be used consistently in all places. |
| */ |
| |
| #define DEV_FORMAT "/dev/mag%d" |
| #define DEV_NAMELEN 16 |
| |
| /* Driver flags */ |
| |
| #define XEN1210_STAT_INITIALIZED 1 /* Device has been initialized */ |
| |
| /**************************************************************************** |
| * Public Types |
| ****************************************************************************/ |
| |
| /* This structure describes the results of one XEN1210 sample */ |
| |
| struct xen1210_sample_s |
| { |
| uint32_t data_x; /* Measured X-axis magnetic field */ |
| uint32_t data_y; /* Measured Y-axis magnetic field */ |
| uint32_t data_z; /* Measured Z-axis magnetic filed */ |
| }; |
| |
| /* This structure represents the state of the XEN1210 driver */ |
| |
| struct xen1210_dev_s |
| { |
| /* Common fields */ |
| |
| FAR struct xen1210_config_s *config; /* Board configuration data */ |
| sem_t exclsem; /* Manages exclusive access to this structure */ |
| FAR struct spi_dev_s *spi; /* Saved SPI driver instance */ |
| |
| uint8_t status; /* See XEN1210_STAT_* definitions */ |
| struct work_s work; /* Supports the interrupt handling "bottom half" */ |
| |
| uint8_t nwaiters; /* Number of threads waiting for XEN1210 data */ |
| |
| sem_t waitsem; /* Used to wait for the availability of data */ |
| |
| struct work_s timeout; /* Supports timeout work */ |
| struct xen1210_sample_s sample; /* Last sampled accelerometer data */ |
| }; |
| |
| /**************************************************************************** |
| * Public Function Prototypes |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: xen1210_getdata |
| * |
| * Description: |
| * Read 24-bit from XEN1210 buffer, read three times (3 sensors) |
| * |
| ****************************************************************************/ |
| |
| void xen1210_getdata(FAR struct xen1210_dev_s *priv); |
| |
| /**************************************************************************** |
| * Name: xen1210_putdata |
| * |
| * Description: |
| * Write 24-bit to XEN1210 buffer, write three times (3 sensors) |
| * |
| ****************************************************************************/ |
| |
| void xen1210_putdata(FAR struct xen1210_dev_s *priv, uint32_t regval); |
| |
| #endif /* CONFIG_SENSORS_XEN1210 */ |
| #endif /* __DRIVERS_SENSORS_XEN1210_H */ |