95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/* ST Microelectronics LIS2MDL 3-axis magnetometer sensor
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*
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* Copyright (c) 2018-2019 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/lis2mdl.pdf
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*/
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#ifndef __MAG_LIS2MDL_H
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#define __MAG_LIS2MDL_H
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#include <drivers/spi.h>
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#include <drivers/gpio.h>
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#include <drivers/sensor.h>
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#include <sys/util.h>
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#include "lis2mdl_reg.h"
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union axis3bit16_t {
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s16_t i16bit[3];
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u8_t u8bit[6];
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};
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union axis1bit16_t {
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s16_t i16bit;
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u8_t u8bit[2];
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};
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struct lis2mdl_config {
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char *master_dev_name;
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int (*bus_init)(struct device *dev);
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#ifdef CONFIG_LIS2MDL_TRIGGER
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char *gpio_name;
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u32_t gpio_pin;
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u8_t gpio_flags;
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#endif /* CONFIG_LIS2MDL_TRIGGER */
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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u16_t i2c_slv_addr;
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#elif DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
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struct spi_config spi_conf;
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#if DT_INST_SPI_DEV_HAS_CS_GPIOS(0)
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const char *gpio_cs_port;
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u8_t cs_gpio;
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#endif /* DT_INST_SPI_DEV_HAS_CS_GPIOS(0) */
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#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */
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};
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/* Sensor data */
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struct lis2mdl_data {
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struct device *bus;
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u16_t i2c_addr;
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s16_t mag[3];
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s32_t temp_sample;
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stmdev_ctx_t *ctx;
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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stmdev_ctx_t ctx_i2c;
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#elif DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
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stmdev_ctx_t ctx_spi;
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#endif
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#ifdef CONFIG_LIS2MDL_TRIGGER
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struct device *gpio;
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struct gpio_callback gpio_cb;
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sensor_trigger_handler_t handler_drdy;
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#if defined(CONFIG_LIS2MDL_TRIGGER_OWN_THREAD)
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K_THREAD_STACK_MEMBER(thread_stack, CONFIG_LIS2MDL_THREAD_STACK_SIZE);
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struct k_thread thread;
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struct k_sem gpio_sem;
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#elif defined(CONFIG_LIS2MDL_TRIGGER_GLOBAL_THREAD)
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struct k_work work;
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struct device *dev;
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#endif /* CONFIG_LIS2MDL_TRIGGER_GLOBAL_THREAD */
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#endif /* CONFIG_LIS2MDL_TRIGGER */
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#if DT_INST_SPI_DEV_HAS_CS_GPIOS(0)
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struct spi_cs_control cs_ctrl;
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#endif /* DT_INST_SPI_DEV_HAS_CS_GPIOS(0) */
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};
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int lis2mdl_spi_init(struct device *dev);
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int lis2mdl_i2c_init(struct device *dev);
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#ifdef CONFIG_LIS2MDL_TRIGGER
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int lis2mdl_init_interrupt(struct device *dev);
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int lis2mdl_trigger_set(struct device *dev,
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const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler);
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#endif /* CONFIG_LIS2MDL_TRIGGER */
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#endif /* __MAG_LIS2MDL_H */
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