96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* ST Microelectronics IIS2MDC 3-axis magnetometer sensor
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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/iis2mdc.pdf
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*/
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#ifndef __MAG_IIS2MDC_H
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#define __MAG_IIS2MDC_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 "iis2mdc_reg.h"
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union axis3bit16_t {
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int16_t i16bit[3];
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uint8_t u8bit[6];
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};
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union axis1bit16_t {
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int16_t i16bit;
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uint8_t u8bit[2];
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};
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struct iis2mdc_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_IIS2MDC_TRIGGER
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const char *drdy_port;
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gpio_pin_t drdy_pin;
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gpio_dt_flags_t drdy_flags;
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#endif /* CONFIG_IIS2MDC_TRIGGER */
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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uint16_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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uint8_t cs_gpio;
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uint8_t cs_gpio_flags;
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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 iis2mdc_data {
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struct device *bus;
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uint16_t i2c_addr;
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int16_t mag[3];
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int32_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_IIS2MDC_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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struct device *dev;
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#if defined(CONFIG_IIS2MDC_TRIGGER_OWN_THREAD)
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K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_IIS2MDC_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_IIS2MDC_TRIGGER_GLOBAL_THREAD)
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struct k_work work;
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#endif /* CONFIG_IIS2MDC_TRIGGER_GLOBAL_THREAD */
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#endif /* CONFIG_IIS2MDC_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 iis2mdc_spi_init(struct device *dev);
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int iis2mdc_i2c_init(struct device *dev);
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#ifdef CONFIG_IIS2MDC_TRIGGER
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int iis2mdc_init_interrupt(struct device *dev);
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int iis2mdc_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_IIS2MDC_TRIGGER */
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#endif /* __MAG_IIS2MDC_H */
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