457 lines
12 KiB
C
457 lines
12 KiB
C
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/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-01-31 flybreak first version
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* 2020-02-22 luhuadong support custom commands
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*/
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#include "sensor.h"
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#define DBG_TAG "sensor"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#include <string.h>
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static char *const sensor_name_str[] =
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{
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"none",
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"acce_", /* Accelerometer */
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"gyro_", /* Gyroscope */
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"mag_", /* Magnetometer */
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"temp_", /* Temperature */
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"humi_", /* Relative Humidity */
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"baro_", /* Barometer */
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"li_", /* Ambient light */
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"pr_", /* Proximity */
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"hr_", /* Heart Rate */
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"tvoc_", /* TVOC Level */
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"noi_", /* Noise Loudness */
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"step_", /* Step sensor */
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"forc_", /* Force sensor */
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"dust_", /* Dust sensor */
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"eco2_", /* eCO2 sensor */
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"gnss_", /* GPS/GNSS sensor */
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"tof_" /* TOF sensor */
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};
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/* Sensor interrupt correlation function */
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/*
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* Sensor interrupt handler function
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*/
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void rt_sensor_cb(rt_sensor_t sen)
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{
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if (sen->parent.rx_indicate == RT_NULL)
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{
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return;
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}
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if (sen->irq_handle != RT_NULL)
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{
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sen->irq_handle(sen);
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}
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/* The buffer is not empty. Read the data in the buffer first */
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if (sen->data_len > 0)
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{
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sen->parent.rx_indicate(&sen->parent, sen->data_len / sizeof(struct rt_sensor_data));
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}
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else if (sen->config.mode == RT_SENSOR_MODE_INT)
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{
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/* The interrupt mode only produces one data at a time */
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sen->parent.rx_indicate(&sen->parent, 1);
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}
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else if (sen->config.mode == RT_SENSOR_MODE_FIFO)
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{
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sen->parent.rx_indicate(&sen->parent, sen->info.fifo_max);
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}
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}
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/* ISR for sensor interrupt */
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static void irq_callback(void *args)
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{
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rt_sensor_t sensor = (rt_sensor_t)args;
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rt_uint8_t i;
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if (sensor->module)
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{
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/* Invoke a callback for all sensors in the module */
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for (i = 0; i < sensor->module->sen_num; i++)
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{
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rt_sensor_cb(sensor->module->sen[i]);
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}
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}
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else
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{
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rt_sensor_cb(sensor);
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}
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}
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/* Sensor interrupt initialization function */
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static rt_err_t rt_sensor_irq_init(rt_sensor_t sensor)
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{
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if (sensor->config.irq_pin.pin == RT_PIN_NONE)
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{
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return -RT_EINVAL;
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}
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rt_pin_mode(sensor->config.irq_pin.pin, sensor->config.irq_pin.mode);
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if (sensor->config.irq_pin.mode == PIN_MODE_INPUT_PULLDOWN)
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{
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rt_pin_attach_irq(sensor->config.irq_pin.pin, PIN_IRQ_MODE_RISING, irq_callback, (void *)sensor);
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}
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else if (sensor->config.irq_pin.mode == PIN_MODE_INPUT_PULLUP)
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{
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rt_pin_attach_irq(sensor->config.irq_pin.pin, PIN_IRQ_MODE_FALLING, irq_callback, (void *)sensor);
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}
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else if (sensor->config.irq_pin.mode == PIN_MODE_INPUT)
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{
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rt_pin_attach_irq(sensor->config.irq_pin.pin, PIN_IRQ_MODE_RISING_FALLING, irq_callback, (void *)sensor);
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}
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rt_pin_irq_enable(sensor->config.irq_pin.pin, RT_TRUE);
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LOG_I("interrupt init success");
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return 0;
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}
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/* RT-Thread Device Interface */
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static rt_err_t rt_sensor_open(rt_device_t dev, rt_uint16_t oflag)
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{
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rt_sensor_t sensor = (rt_sensor_t)dev;
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RT_ASSERT(dev != RT_NULL);
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rt_err_t res = RT_EOK;
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if (sensor->module)
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{
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/* take the module mutex */
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rt_mutex_take(sensor->module->lock, RT_WAITING_FOREVER);
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}
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if (sensor->module != RT_NULL && sensor->info.fifo_max > 0 && sensor->data_buf == RT_NULL)
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{
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/* Allocate memory for the sensor buffer */
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sensor->data_buf = rt_malloc(sizeof(struct rt_sensor_data) * sensor->info.fifo_max);
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if (sensor->data_buf == RT_NULL)
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{
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res = -RT_ENOMEM;
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goto __exit;
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}
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}
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if (oflag & RT_DEVICE_FLAG_RDONLY && dev->flag & RT_DEVICE_FLAG_RDONLY)
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{
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if (sensor->ops->control != RT_NULL)
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{
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/* If polling mode is supported, configure it to polling mode */
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sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_MODE, (void *)RT_SENSOR_MODE_POLLING);
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}
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sensor->config.mode = RT_SENSOR_MODE_POLLING;
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}
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else if (oflag & RT_DEVICE_FLAG_INT_RX && dev->flag & RT_DEVICE_FLAG_INT_RX)
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{
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if (sensor->ops->control != RT_NULL)
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{
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/* If interrupt mode is supported, configure it to interrupt mode */
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sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_MODE, (void *)RT_SENSOR_MODE_INT);
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}
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/* Initialization sensor interrupt */
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rt_sensor_irq_init(sensor);
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sensor->config.mode = RT_SENSOR_MODE_INT;
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}
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else if (oflag & RT_DEVICE_FLAG_FIFO_RX && dev->flag & RT_DEVICE_FLAG_FIFO_RX)
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{
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if (sensor->ops->control != RT_NULL)
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{
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/* If fifo mode is supported, configure it to fifo mode */
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sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_MODE, (void *)RT_SENSOR_MODE_FIFO);
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}
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/* Initialization sensor interrupt */
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rt_sensor_irq_init(sensor);
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sensor->config.mode = RT_SENSOR_MODE_FIFO;
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}
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else
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{
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res = -RT_EINVAL;
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goto __exit;
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}
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/* Configure power mode to normal mode */
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if (sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_POWER, (void *)RT_SENSOR_POWER_NORMAL) == RT_EOK)
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{
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sensor->config.power = RT_SENSOR_POWER_NORMAL;
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}
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__exit:
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if (sensor->module)
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{
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/* release the module mutex */
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rt_mutex_release(sensor->module->lock);
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}
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return res;
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}
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static rt_err_t rt_sensor_close(rt_device_t dev)
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{
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rt_sensor_t sensor = (rt_sensor_t)dev;
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int i;
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RT_ASSERT(dev != RT_NULL);
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if (sensor->module)
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{
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rt_mutex_take(sensor->module->lock, RT_WAITING_FOREVER);
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}
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/* Configure power mode to power down mode */
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if (sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_POWER, (void *)RT_SENSOR_POWER_DOWN) == RT_EOK)
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{
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sensor->config.power = RT_SENSOR_POWER_DOWN;
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}
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/* Sensor disable interrupt */
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if (sensor->config.irq_pin.pin != RT_PIN_NONE)
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{
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rt_pin_irq_enable(sensor->config.irq_pin.pin, RT_FALSE);
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}
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if (sensor->module != RT_NULL && sensor->info.fifo_max > 0 && sensor->data_buf != RT_NULL)
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{
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for (i = 0; i < sensor->module->sen_num; i ++)
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{
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if (sensor->module->sen[i]->parent.ref_count > 0)
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goto __exit;
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}
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/* Free memory for the sensor buffer */
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for (i = 0; i < sensor->module->sen_num; i ++)
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{
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if (sensor->module->sen[i]->data_buf != RT_NULL)
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{
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rt_free(sensor->module->sen[i]->data_buf);
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sensor->module->sen[i]->data_buf = RT_NULL;
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}
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}
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}
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__exit:
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if (sensor->module)
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{
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rt_mutex_release(sensor->module->lock);
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}
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return RT_EOK;
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}
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static rt_size_t rt_sensor_read(rt_device_t dev, rt_off_t pos, void *buf, rt_size_t len)
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{
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rt_sensor_t sensor = (rt_sensor_t)dev;
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rt_size_t result = 0;
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RT_ASSERT(dev != RT_NULL);
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if (buf == NULL || len == 0)
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{
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return 0;
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}
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if (sensor->module)
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{
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rt_mutex_take(sensor->module->lock, RT_WAITING_FOREVER);
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}
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/* The buffer is not empty. Read the data in the buffer first */
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if (sensor->data_len > 0)
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{
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if (len > sensor->data_len / sizeof(struct rt_sensor_data))
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{
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len = sensor->data_len / sizeof(struct rt_sensor_data);
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}
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rt_memcpy(buf, sensor->data_buf, len * sizeof(struct rt_sensor_data));
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/* Clear the buffer */
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sensor->data_len = 0;
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result = len;
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}
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else
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{
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/* If the buffer is empty read the data */
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result = sensor->ops->fetch_data(sensor, buf, len);
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}
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if (sensor->module)
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{
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rt_mutex_release(sensor->module->lock);
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}
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return result;
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}
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static rt_err_t rt_sensor_control(rt_device_t dev, int cmd, void *args)
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{
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rt_sensor_t sensor = (rt_sensor_t)dev;
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rt_err_t result = RT_EOK;
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RT_ASSERT(dev != RT_NULL);
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if (sensor->module)
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{
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rt_mutex_take(sensor->module->lock, RT_WAITING_FOREVER);
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}
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switch (cmd)
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{
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case RT_SENSOR_CTRL_GET_ID:
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if (args)
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{
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result = sensor->ops->control(sensor, RT_SENSOR_CTRL_GET_ID, args);
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}
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break;
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case RT_SENSOR_CTRL_GET_INFO:
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if (args)
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{
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rt_memcpy(args, &sensor->info, sizeof(struct rt_sensor_info));
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}
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break;
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case RT_SENSOR_CTRL_SET_RANGE:
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/* Configuration measurement range */
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result = sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_RANGE, args);
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if (result == RT_EOK)
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{
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sensor->config.range = (rt_int32_t)args;
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LOG_D("set range %d", sensor->config.range);
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}
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break;
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case RT_SENSOR_CTRL_SET_ODR:
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/* Configuration data output rate */
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result = sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_ODR, args);
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if (result == RT_EOK)
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{
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sensor->config.odr = (rt_uint32_t)args & 0xFFFF;
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LOG_D("set odr %d", sensor->config.odr);
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}
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break;
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case RT_SENSOR_CTRL_SET_POWER:
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/* Configuration sensor power mode */
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result = sensor->ops->control(sensor, RT_SENSOR_CTRL_SET_POWER, args);
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if (result == RT_EOK)
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{
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sensor->config.power = (rt_uint32_t)args & 0xFF;
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LOG_D("set power mode code:", sensor->config.power);
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}
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break;
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case RT_SENSOR_CTRL_SELF_TEST:
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/* Device self-test */
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result = sensor->ops->control(sensor, RT_SENSOR_CTRL_SELF_TEST, args);
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break;
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default:
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if (cmd > RT_SENSOR_CTRL_USER_CMD_START)
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{
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/* Custom commands */
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result = sensor->ops->control(sensor, cmd, args);
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}
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else
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{
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result = -RT_ERROR;
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}
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break;
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}
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if (sensor->module)
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{
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rt_mutex_release(sensor->module->lock);
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}
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return result;
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}
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#ifdef RT_USING_DEVICE_OPS
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const static struct rt_device_ops rt_sensor_ops =
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{
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RT_NULL,
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rt_sensor_open,
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rt_sensor_close,
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rt_sensor_read,
|
||
|
|
RT_NULL,
|
||
|
|
rt_sensor_control
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sensor register
|
||
|
|
*/
|
||
|
|
int rt_hw_sensor_register(rt_sensor_t sensor,
|
||
|
|
const char *name,
|
||
|
|
rt_uint32_t flag,
|
||
|
|
void *data)
|
||
|
|
{
|
||
|
|
rt_int8_t result;
|
||
|
|
rt_device_t device;
|
||
|
|
RT_ASSERT(sensor != RT_NULL);
|
||
|
|
|
||
|
|
char *sensor_name = RT_NULL, *device_name = RT_NULL;
|
||
|
|
|
||
|
|
/* Add a type name for the sensor device */
|
||
|
|
sensor_name = sensor_name_str[sensor->info.type];
|
||
|
|
device_name = (char *)rt_calloc(1, rt_strlen(sensor_name) + 1 + rt_strlen(name));
|
||
|
|
if (device_name == RT_NULL)
|
||
|
|
{
|
||
|
|
LOG_E("device_name calloc failed!");
|
||
|
|
return -RT_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_memcpy(device_name, sensor_name, rt_strlen(sensor_name) + 1);
|
||
|
|
strcat(device_name, name);
|
||
|
|
|
||
|
|
if (sensor->module != RT_NULL && sensor->module->lock == RT_NULL)
|
||
|
|
{
|
||
|
|
/* Create a mutex lock for the module */
|
||
|
|
sensor->module->lock = rt_mutex_create(name, RT_IPC_FLAG_FIFO);
|
||
|
|
if (sensor->module->lock == RT_NULL)
|
||
|
|
{
|
||
|
|
rt_free(device_name);
|
||
|
|
return -RT_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
device = &sensor->parent;
|
||
|
|
|
||
|
|
#ifdef RT_USING_DEVICE_OPS
|
||
|
|
device->ops = &rt_sensor_ops;
|
||
|
|
#else
|
||
|
|
device->init = RT_NULL;
|
||
|
|
device->open = rt_sensor_open;
|
||
|
|
device->close = rt_sensor_close;
|
||
|
|
device->read = rt_sensor_read;
|
||
|
|
device->write = RT_NULL;
|
||
|
|
device->control = rt_sensor_control;
|
||
|
|
#endif
|
||
|
|
device->type = RT_Device_Class_Sensor;
|
||
|
|
device->rx_indicate = RT_NULL;
|
||
|
|
device->tx_complete = RT_NULL;
|
||
|
|
device->user_data = data;
|
||
|
|
|
||
|
|
result = rt_device_register(device, device_name, flag | RT_DEVICE_FLAG_STANDALONE);
|
||
|
|
if (result != RT_EOK)
|
||
|
|
{
|
||
|
|
rt_free(device_name);
|
||
|
|
LOG_E("rt_sensor register err code: %d", result);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_free(device_name);
|
||
|
|
LOG_I("rt_sensor init success");
|
||
|
|
return RT_EOK;
|
||
|
|
}
|