| /* ST Microelectronics LIS2DS12 3-axis accelerometer driver |
| * |
| * Copyright (c) 2019 STMicroelectronics |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Datasheet: |
| * https://www.st.com/resource/en/datasheet/lis2ds12.pdf |
| */ |
| |
| #define DT_DRV_COMPAT st_lis2ds12 |
| |
| #include <zephyr/logging/log.h> |
| #include "lis2ds12.h" |
| |
| LOG_MODULE_DECLARE(LIS2DS12, CONFIG_SENSOR_LOG_LEVEL); |
| |
| static void lis2ds12_gpio_callback(const struct device *dev, |
| struct gpio_callback *cb, uint32_t pins) |
| { |
| struct lis2ds12_data *data = |
| CONTAINER_OF(cb, struct lis2ds12_data, gpio_cb); |
| const struct lis2ds12_config *cfg = data->dev->config; |
| int ret; |
| |
| ARG_UNUSED(pins); |
| |
| ret = gpio_pin_interrupt_configure_dt(&cfg->gpio_int, GPIO_INT_DISABLE); |
| if (ret < 0) { |
| LOG_ERR("%s: Not able to configure pin_int", dev->name); |
| } |
| |
| #if defined(CONFIG_LIS2DS12_TRIGGER_OWN_THREAD) |
| k_sem_give(&data->trig_sem); |
| #elif defined(CONFIG_LIS2DS12_TRIGGER_GLOBAL_THREAD) |
| k_work_submit(&data->work); |
| #endif |
| } |
| |
| static void lis2ds12_handle_drdy_int(const struct device *dev) |
| { |
| struct lis2ds12_data *data = dev->data; |
| |
| if (data->data_ready_handler != NULL) { |
| data->data_ready_handler(dev, &data->data_ready_trigger); |
| } |
| } |
| |
| static void lis2ds12_handle_int(const struct device *dev) |
| { |
| const struct lis2ds12_config *cfg = dev->config; |
| stmdev_ctx_t *ctx = (stmdev_ctx_t *)&cfg->ctx; |
| lis2ds12_all_sources_t sources; |
| int ret; |
| |
| lis2ds12_all_sources_get(ctx, &sources); |
| |
| if (sources.status_dup.drdy) { |
| lis2ds12_handle_drdy_int(dev); |
| } |
| |
| ret = gpio_pin_interrupt_configure_dt(&cfg->gpio_int, |
| GPIO_INT_EDGE_TO_ACTIVE); |
| if (ret < 0) { |
| LOG_ERR("%s: Not able to configure pin_int", dev->name); |
| } |
| } |
| |
| #ifdef CONFIG_LIS2DS12_TRIGGER_OWN_THREAD |
| static void lis2ds12_thread(struct lis2ds12_data *data) |
| { |
| while (1) { |
| k_sem_take(&data->trig_sem, K_FOREVER); |
| lis2ds12_handle_int(data->dev); |
| } |
| } |
| #endif |
| |
| #ifdef CONFIG_LIS2DS12_TRIGGER_GLOBAL_THREAD |
| static void lis2ds12_work_cb(struct k_work *work) |
| { |
| struct lis2ds12_data *data = |
| CONTAINER_OF(work, struct lis2ds12_data, work); |
| |
| lis2ds12_handle_int(data->dev); |
| } |
| #endif |
| |
| static int lis2ds12_init_interrupt(const struct device *dev) |
| { |
| const struct lis2ds12_config *cfg = dev->config; |
| stmdev_ctx_t *ctx = (stmdev_ctx_t *)&cfg->ctx; |
| lis2ds12_pin_int1_route_t route; |
| int err; |
| |
| /* Enable pulsed mode */ |
| err = lis2ds12_int_notification_set(ctx, LIS2DS12_INT_PULSED); |
| if (err < 0) { |
| return err; |
| } |
| |
| /* route data-ready interrupt on int1 */ |
| err = lis2ds12_pin_int1_route_get(ctx, &route); |
| if (err < 0) { |
| return err; |
| } |
| |
| route.int1_drdy = 1; |
| |
| err = lis2ds12_pin_int1_route_set(ctx, route); |
| if (err < 0) { |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| int lis2ds12_trigger_init(const struct device *dev) |
| { |
| struct lis2ds12_data *data = dev->data; |
| const struct lis2ds12_config *cfg = dev->config; |
| int ret; |
| |
| /* setup data ready gpio interrupt (INT1 or INT2) */ |
| if (!device_is_ready(cfg->gpio_int.port)) { |
| if (cfg->gpio_int.port) { |
| LOG_ERR("%s: device %s is not ready", dev->name, |
| cfg->gpio_int.port->name); |
| return -ENODEV; |
| } |
| |
| LOG_DBG("%s: gpio_int not defined in DT", dev->name); |
| return 0; |
| } |
| |
| data->dev = dev; |
| |
| ret = gpio_pin_configure_dt(&cfg->gpio_int, GPIO_INPUT); |
| if (ret < 0) { |
| LOG_ERR("Could not configure gpio"); |
| return ret; |
| } |
| |
| LOG_INF("%s: int on %s.%02u", dev->name, cfg->gpio_int.port->name, |
| cfg->gpio_int.pin); |
| |
| gpio_init_callback(&data->gpio_cb, |
| lis2ds12_gpio_callback, |
| BIT(cfg->gpio_int.pin)); |
| |
| ret = gpio_add_callback(cfg->gpio_int.port, &data->gpio_cb); |
| if (ret < 0) { |
| LOG_ERR("Could not set gpio callback"); |
| return ret; |
| } |
| |
| #if defined(CONFIG_LIS2DS12_TRIGGER_OWN_THREAD) |
| k_sem_init(&data->trig_sem, 0, K_SEM_MAX_LIMIT); |
| |
| k_thread_create(&data->thread, data->thread_stack, |
| CONFIG_LIS2DS12_THREAD_STACK_SIZE, |
| (k_thread_entry_t)lis2ds12_thread, |
| data, NULL, NULL, |
| K_PRIO_COOP(CONFIG_LIS2DS12_THREAD_PRIORITY), |
| 0, K_NO_WAIT); |
| #elif defined(CONFIG_LIS2DS12_TRIGGER_GLOBAL_THREAD) |
| data->work.handler = lis2ds12_work_cb; |
| #endif |
| |
| return gpio_pin_interrupt_configure_dt(&cfg->gpio_int, |
| GPIO_INT_EDGE_TO_ACTIVE); |
| } |
| |
| int lis2ds12_trigger_set(const struct device *dev, |
| const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler) |
| { |
| struct lis2ds12_data *data = dev->data; |
| const struct lis2ds12_config *cfg = dev->config; |
| stmdev_ctx_t *ctx = (stmdev_ctx_t *)&cfg->ctx; |
| int16_t raw[3]; |
| int ret; |
| |
| __ASSERT_NO_MSG(trig->type == SENSOR_TRIG_DATA_READY); |
| |
| if (cfg->gpio_int.port == NULL) { |
| LOG_ERR("trigger_set is not supported"); |
| return -ENOTSUP; |
| } |
| |
| ret = gpio_pin_interrupt_configure_dt(&cfg->gpio_int, GPIO_INT_DISABLE); |
| if (ret < 0) { |
| LOG_ERR("%s: Not able to configure pin_int", dev->name); |
| return ret; |
| } |
| |
| data->data_ready_handler = handler; |
| if (handler == NULL) { |
| LOG_WRN("lis2ds12: no handler"); |
| return 0; |
| } |
| |
| /* re-trigger lost interrupt */ |
| lis2ds12_acceleration_raw_get(ctx, raw); |
| |
| data->data_ready_trigger = *trig; |
| |
| lis2ds12_init_interrupt(dev); |
| return gpio_pin_interrupt_configure_dt(&cfg->gpio_int, |
| GPIO_INT_EDGE_TO_ACTIVE); |
| } |