4  * SPDX-License-Identifier: Apache-2.0
9 /* sensor pms7003.c - Driver for plantower PMS7003 sensor
27 /* wait serial output with 1000ms timeout */
41  * @brief wait for an array data from uart device with a timeout
44  * @param data the data array to be matched
45  * @param len the data array len
46  * @param timeout the timeout in milliseconds
47  * @return 0 if success; -ETIME if timeout
49 static int uart_wait_for(const struct device *dev, uint8_t *data, int len,  in uart_wait_for()  argument
50 			 int timeout)  in uart_wait_for()  argument
53 	int64_t timeout_time = k_uptime_get() + timeout;  in uart_wait_for()
59 			return -ETIME;  in uart_wait_for()
63 			if (c == data[matched_size]) {  in uart_wait_for()
69 			} else if (c == data[0]) {  in uart_wait_for()
82  * @param data the data buffer
83  * @param len the data len
84  * @param timeout the timeout in milliseconds
85  * @return 0 if success; -ETIME if timeout
87 static int uart_read_bytes(const struct device *dev, uint8_t *data, int len,  in uart_read_bytes()  argument
88 			   int timeout)  in uart_read_bytes()  argument
91 	int64_t timeout_time = k_uptime_get() + timeout;  in uart_read_bytes()
97 			return -ETIME;  in uart_read_bytes()
101 			data[read_size++] = c;  in uart_read_bytes()
113 	struct pms7003_data *drv_data = dev->data;  in pms7003_sample_fetch()
114 	const struct pms7003_config *cfg = dev->config;  in pms7003_sample_fetch()
124 	if (uart_wait_for(cfg->uart_dev, pms7003_start_bytes,  in pms7003_sample_fetch()
127 		LOG_WRN("waiting for start bytes is timeout");  in pms7003_sample_fetch()
128 		return -ETIME;  in pms7003_sample_fetch()
131 	if (uart_read_bytes(cfg->uart_dev, pms7003_receive_buffer, 30,  in pms7003_sample_fetch()
133 		return -ETIME;  in pms7003_sample_fetch()
136 	drv_data->pm_1_0 =  in pms7003_sample_fetch()
138 	drv_data->pm_2_5 =  in pms7003_sample_fetch()
140 	drv_data->pm_10 =  in pms7003_sample_fetch()
143 	LOG_DBG("pm1.0 = %d", drv_data->pm_1_0);  in pms7003_sample_fetch()
144 	LOG_DBG("pm2.5 = %d", drv_data->pm_2_5);  in pms7003_sample_fetch()
145 	LOG_DBG("pm10 = %d", drv_data->pm_10);  in pms7003_sample_fetch()
153 	struct pms7003_data *drv_data = dev->data;  in pms7003_channel_get()
156 		val->val1 = drv_data->pm_1_0;  in pms7003_channel_get()
157 		val->val2 = 0;  in pms7003_channel_get()
159 		val->val1 = drv_data->pm_2_5;  in pms7003_channel_get()
160 		val->val2 = 0;  in pms7003_channel_get()
162 		val->val1 = drv_data->pm_10;  in pms7003_channel_get()
163 		val->val2 = 0;  in pms7003_channel_get()
165 		return -ENOTSUP;  in pms7003_channel_get()
177 	const struct pms7003_config *cfg = dev->config;  in pms7003_init()
179 	if (!device_is_ready(cfg->uart_dev)) {  in pms7003_init()
181 		return -ENODEV;  in pms7003_init()