485f2d410c
Add support to STM IIS2DH the ultra-low-power highperformance three-axis linear accelerometer. Signed-off-by: Armando Visconti <armando.visconti@st.com>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/* ST Microelectronics IIS2DH 3-axis accelerometer driver
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*
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* Copyright (c) 2020 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Datasheet:
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* https://www.st.com/resource/en/datasheet/iis2dh.pdf
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*/
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#define DT_DRV_COMPAT st_iis2dh
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#include <string.h>
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#include <drivers/i2c.h>
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#include <logging/log.h>
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#include "iis2dh.h"
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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static uint16_t iis2dh_i2c_slave_addr = DT_INST_REG_ADDR(0);
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LOG_MODULE_DECLARE(IIS2DH, CONFIG_SENSOR_LOG_LEVEL);
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static int iis2dh_i2c_read(struct iis2dh_data *data, uint8_t reg_addr,
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uint8_t *value, uint16_t len)
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{
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return i2c_burst_read(data->bus, iis2dh_i2c_slave_addr,
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reg_addr | 0x80, value, len);
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}
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static int iis2dh_i2c_write(struct iis2dh_data *data, uint8_t reg_addr,
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uint8_t *value, uint16_t len)
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{
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return i2c_burst_write(data->bus, iis2dh_i2c_slave_addr,
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reg_addr | 0x80, value, len);
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}
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stmdev_ctx_t iis2dh_i2c_ctx = {
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.read_reg = (stmdev_read_ptr) iis2dh_i2c_read,
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.write_reg = (stmdev_write_ptr) iis2dh_i2c_write,
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};
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int iis2dh_i2c_init(struct device *dev)
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{
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struct iis2dh_data *data = dev->driver_data;
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data->ctx = &iis2dh_i2c_ctx;
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data->ctx->handle = data;
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return 0;
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}
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#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */
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