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add FastLED YAML option for data rate (#1338)

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* 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
This commit is contained in:
Nico B
2020-11-01 19:45:21 +01:00
committed by GitHub
parent 20dd744680
commit 3fcdaaefe0
4 changed files with 18 additions and 6 deletions
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esphome/const.py
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@@ -136,6 +136,7 @@ CONF_DALLAS_ID = 'dallas_id'
CONF_DATA = 'data'
CONF_DATA_PIN = 'data_pin'
CONF_DATA_PINS = 'data_pins'
CONF_DATA_RATE = 'data_rate'
CONF_DATA_TEMPLATE = 'data_template'
CONF_DAYS_OF_MONTH = 'days_of_month'
CONF_DAYS_OF_WEEK = 'days_of_week'