diff options
Diffstat (limited to 'nuttx/configs/px4fmu/include/drv_bma180.h')
| -rw-r--r-- | nuttx/configs/px4fmu/include/drv_bma180.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/nuttx/configs/px4fmu/include/drv_bma180.h b/nuttx/configs/px4fmu/include/drv_bma180.h new file mode 100644 index 000000000..a403415e4 --- /dev/null +++ b/nuttx/configs/px4fmu/include/drv_bma180.h @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2012 Lorenz Meier. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name of the author or the names of contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Driver for the BOSCH BMA180 MEMS accelerometer + */ + +/* IMPORTANT NOTES: + * + * SPI max. clock frequency: 25 Mhz + * CS has to be high before transfer, + * go low right before transfer and + * go high again right after transfer + * + */ + +#include <sys/ioctl.h> + +#define _BMA180BASE 0x6300 +#define BMA180C(_x) _IOC(_BMA180BASE, _x) + +/* + * Sets the sensor internal sampling rate, and if a buffer + * has been configured, the rate at which entries will be + * added to the buffer. + */ +#define BMA180_SETRATE BMA180C(1) + +#define BMA180_RATE_LP_10HZ (0<<4) +#define BMA180_RATE_LP_20HZ (1<<4) +#define BMA180_RATE_LP_40HZ (2<<4) +#define BMA180_RATE_LP_75HZ (3<<4) +#define BMA180_RATE_LP_150HZ (4<<4) +#define BMA180_RATE_LP_300HZ (5<<4) +#define BMA180_RATE_LP_600HZ (6<<4) +#define BMA180_RATE_LP_1200HZ (7<<4) + +/* + * Sets the sensor internal range. + */ +#define BMA180_SETRANGE BMA180C(2) + +#define BMA180_RANGE_1G (0<<1) +#define BMA180_RANGE_1_5G (1<<1) +#define BMA180_RANGE_2G (2<<1) +#define BMA180_RANGE_3G (3<<1) +#define BMA180_RANGE_4G (4<<1) +#define BMA180_RANGE_8G (5<<1) +#define BMA180_RANGE_16G (6<<1) + +/* + * Sets the address of a shared BMA180_buffer + * structure that is maintained by the driver. + * + * If zero is passed as the address, disables + * the buffer updating. + */ +#define BMA180_SETBUFFER BMA180C(3) + +struct bma180_buffer { + uint32_t size; /* number of entries in the samples[] array */ + uint32_t next; /* the next entry that will be populated */ + struct { + uint16_t x; + uint16_t y; + uint16_t z; + uint8_t temp; + } samples[]; +}; + +extern int bma180_attach(struct spi_dev_s *spi, int spi_id); |