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3fcdaaefe0
* fix: FastLED SPI_DATA_RATE being truncated to 8 bits
FastLED expects SPI_DATA_RATE as an uint32_t, but we had it as uint8_t.
Fix that to avoid the data rate being truncated.
* fastled: allow specifying data rate
Previously, we've just taken the default data rate from FastLED.
However, that does not always work properly. In my case, I had a
slow level shifter that couldn't keep up with the 1 MHz data
rate default for WS2801. Long cabling might also be a reason why
one might want to reduce the data rate.
This will add a new optional "data_rate" config option where one
may specify the desired data rate as a frequency:
light:
- platform: fastled_spi
chipset: WS2801
data_pin: GPIO23
clock_pin: GPIO22
data_rate: 500kHz
num_leds: 178
46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome import pins
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from esphome.components import fastled_base
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from esphome.const import CONF_CHIPSET, CONF_CLOCK_PIN, CONF_DATA_PIN, CONF_DATA_RATE, \
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CONF_NUM_LEDS, CONF_RGB_ORDER
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AUTO_LOAD = ['fastled_base']
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CHIPSETS = [
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'LPD8806',
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'WS2801',
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'WS2803',
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'SM16716',
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'P9813',
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'APA102',
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'SK9822',
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'DOTSTAR',
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]
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CONFIG_SCHEMA = fastled_base.BASE_SCHEMA.extend({
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cv.Required(CONF_CHIPSET): cv.one_of(*CHIPSETS, upper=True),
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cv.Required(CONF_DATA_PIN): pins.output_pin,
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cv.Required(CONF_CLOCK_PIN): pins.output_pin,
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cv.Optional(CONF_DATA_RATE): cv.frequency,
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})
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def to_code(config):
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var = yield fastled_base.new_fastled_light(config)
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rgb_order = cg.RawExpression(config[CONF_RGB_ORDER] if CONF_RGB_ORDER in config else "RGB")
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data_rate = None
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if CONF_DATA_RATE in config:
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data_rate_khz = int(config[CONF_DATA_RATE] / 1000)
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if data_rate_khz < 1000:
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data_rate = cg.RawExpression(f"DATA_RATE_KHZ({data_rate_khz})")
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else:
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data_rate_mhz = int(data_rate_khz / 1000)
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data_rate = cg.RawExpression(f"DATA_RATE_MHZ({data_rate_mhz})")
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template_args = cg.TemplateArguments(cg.RawExpression(config[CONF_CHIPSET]),
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config[CONF_DATA_PIN], config[CONF_CLOCK_PIN], rgb_order,
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data_rate)
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cg.add(var.add_leds(template_args, config[CONF_NUM_LEDS]))
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