Lines Matching +full:off +full:- +full:on +full:- +full:delay +full:- +full:us

4  * SPDX-License-Identifier: Apache-2.0
13  * TLC59731 is a 3-Channel, 8-Bit, PWM LED Driver
14  * With Single-Wire Interface (EasySet)
16  * The EasySet protocol is based on short pulses and the time between
18  * between 1.67us and 50us. We want to go as fast as possible, but
19  * delays under 1us don't work very well, so we settle on 5us for the
21  * A pulse must be high for at least 14ns. In practice, turning a GPIO on
22  * and immediately off again already takes longer than that, so no delay
25  * A one is represented by an additional pulse between 275ns and 2.5us
26  * (half a cycle) after the first one. We need at least some delay to get to
28  * full 1us. After the pulse, we wait an additional T_CYCLE_1 to complete
44 #define TLC59731_DELAY     0x01 /* us */
45 #define TLC59731_T_CYCLE_0 0x04 /* us */
46 #define TLC59731_T_CYCLE_1 0x01 /* us */
99 		rgb_write_bit(led_dev, data & BIT((idx--)));  in rgb_write_data()
108 	const struct tlc59731_cfg *tlc_conf = dev->config;  in tlc59731_led_set_color()
109 	const struct gpio_dt_spec *led_gpio = &tlc_conf->sdi_gpio;  in tlc59731_led_set_color()
112 	rgb_write_data(led_gpio, pixel->r);  in tlc59731_led_set_color()
113 	rgb_write_data(led_gpio, pixel->g);  in tlc59731_led_set_color()
114 	rgb_write_data(led_gpio, pixel->b);  in tlc59731_led_set_color()
137 	const struct tlc59731_cfg *config = dev->config;  in tlc59731_length()
139 	return config->length;  in tlc59731_length()
149 	const struct tlc59731_cfg *tlc_conf = dev->config;  in tlc59731_gpio_init()
150 	const struct gpio_dt_spec *led = &tlc_conf->sdi_gpio;  in tlc59731_gpio_init()
153 	if (!device_is_ready(led->port)) {  in tlc59731_gpio_init()
154 		LOG_ERR("%s: no LEDs found (DT child nodes missing)", dev->name);  in tlc59731_gpio_init()
155 		err = -ENODEV;  in tlc59731_gpio_init()
161 		LOG_ERR("%s: Unable to setup SDI port", dev->name);  in tlc59731_gpio_init()
162 		err = -EIO;  in tlc59731_gpio_init()
168 		LOG_ERR("%s: Unable to set the SDI-GPIO)", dev->name);  in tlc59731_gpio_init()
169 		err = -EIO;  in tlc59731_gpio_init()