| /* ST Microelectronics IIS2DH 3-axis accelerometer driver |
| * |
| * Copyright (c) 2020 STMicroelectronics |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Datasheet: |
| * https://www.st.com/resource/en/datasheet/iis2dh.pdf |
| */ |
| |
| #ifndef ZEPHYR_DRIVERS_SENSOR_IIS2DH_IIS2DH_H_ |
| #define ZEPHYR_DRIVERS_SENSOR_IIS2DH_IIS2DH_H_ |
| |
| #include <drivers/spi.h> |
| #include <drivers/gpio.h> |
| #include <sys/util.h> |
| #include <drivers/sensor.h> |
| #include "iis2dh_reg.h" |
| |
| /* |
| * Return ODR reg value based on data rate set |
| */ |
| #define IIS2DH_ODR_TO_REG_HR(_lp, _odr) \ |
| ((_odr == 0) ? IIS2DH_POWER_DOWN : \ |
| ((_odr < 10) ? IIS2DH_ODR_1Hz : \ |
| ((_odr < 25) ? IIS2DH_ODR_10Hz : \ |
| ((_lp == IIS2DH_LP_8bit) && (_odr >= 5376) ? IIS2DH_ODR_5kHz376_LP_1kHz344_NM_HP : \ |
| ((_lp != IIS2DH_LP_8bit) && (_odr >= 1344) ? IIS2DH_ODR_5kHz376_LP_1kHz344_NM_HP : \ |
| ((_lp == IIS2DH_LP_8bit) && (_odr >= 1600) ? IIS2DH_ODR_1kHz620_LP : \ |
| ((_lp != IIS2DH_LP_8bit) && (_odr >= 800) ? IIS2DH_ODR_400Hz : \ |
| ((31 - __builtin_clz(_odr / 25))) + 3))))))) |
| |
| /* FS reg value from Full Scale */ |
| #define IIS2DH_FS_TO_REG(_fs) (30 - __builtin_clz(_fs)) |
| |
| /** |
| * struct iis2dh_device_config - iis2dh hw configuration |
| * @bus_name: Pointer to bus master identifier. |
| * @pm: Power mode (lis2dh_powermode). |
| * @int_gpio_port: Pointer to GPIO PORT identifier. |
| * @int_gpio_pin: GPIO pin number connecter to sensor int pin. |
| */ |
| struct iis2dh_device_config { |
| const char *bus_name; |
| uint8_t pm; |
| #ifdef CONFIG_IIS2DH_TRIGGER |
| const char *int_gpio_port; |
| uint8_t int_gpio_pin; |
| uint8_t int_gpio_flags; |
| uint8_t int_pin; |
| #endif /* CONFIG_IIS2DH_TRIGGER */ |
| }; |
| |
| /* sensor data */ |
| struct iis2dh_data { |
| const struct device *bus; |
| int16_t acc[3]; |
| uint32_t gain; |
| |
| stmdev_ctx_t *ctx; |
| #ifdef CONFIG_IIS2DH_TRIGGER |
| const struct device *dev; |
| const struct device *gpio; |
| uint8_t gpio_pin; |
| struct gpio_callback gpio_cb; |
| sensor_trigger_handler_t drdy_handler; |
| #if defined(CONFIG_IIS2DH_TRIGGER_OWN_THREAD) |
| K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_IIS2DH_THREAD_STACK_SIZE); |
| struct k_thread thread; |
| struct k_sem gpio_sem; |
| #elif defined(CONFIG_IIS2DH_TRIGGER_GLOBAL_THREAD) |
| struct k_work work; |
| #endif /* CONFIG_IIS2DH_TRIGGER_GLOBAL_THREAD */ |
| #endif /* CONFIG_IIS2DH_TRIGGER */ |
| #if DT_INST_SPI_DEV_HAS_CS_GPIOS(0) |
| struct spi_cs_control cs_ctrl; |
| #endif |
| }; |
| |
| int iis2dh_i2c_init(const struct device *dev); |
| int iis2dh_spi_init(const struct device *dev); |
| |
| #ifdef CONFIG_IIS2DH_TRIGGER |
| int iis2dh_init_interrupt(const struct device *dev); |
| int iis2dh_trigger_set(const struct device *dev, |
| const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler); |
| #endif /* CONFIG_IIS2DH_TRIGGER */ |
| |
| #endif /* ZEPHYR_DRIVERS_SENSOR_IIS2DH_IIS2DH_H_ */ |