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@ -1604,6 +1604,53 @@
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#load-cells" class="md-nav__link">
Load Cells
</a>
<nav class="md-nav" aria-label="Load Cells">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#load_cell" class="md-nav__link">
[load_cell]
</a>
<nav class="md-nav" aria-label="[load_cell]">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#xh711" class="md-nav__link">
XH711
</a>
</li>
<li class="md-nav__item">
<a href="#hx717" class="md-nav__link">
HX717
</a>
</li>
<li class="md-nav__item">
<a href="#ads1220" class="md-nav__link">
ADS1220
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
@ -3651,6 +3698,53 @@
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#load-cells" class="md-nav__link">
Load Cells
</a>
<nav class="md-nav" aria-label="Load Cells">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#load_cell" class="md-nav__link">
[load_cell]
</a>
<nav class="md-nav" aria-label="[load_cell]">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#xh711" class="md-nav__link">
XH711
</a>
</li>
<li class="md-nav__item">
<a href="#hx717" class="md-nav__link">
HX717
</a>
</li>
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<a href="#ads1220" class="md-nav__link">
ADS1220
</a>
</li>
</ul>
</nav>
</li>
</ul>
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@ -7981,6 +8075,89 @@ adc2:
# above parameters.
</code></pre></div>
<h2 id="load-cells">Load Cells<a class="headerlink" href="#load-cells" title="Permanent link">&para;</a></h2>
<h3 id="load_cell">[load_cell]<a class="headerlink" href="#load_cell" title="Permanent link">&para;</a></h3>
<p>Load Cell. Uses an ADC sensor attached to a load cell to create a digital
scale.</p>
<div class="highlight"><pre><span></span><code>[load_cell]
sensor_type:
# This must be one of the supported sensor types, see below.
</code></pre></div>
<h4 id="xh711">XH711<a class="headerlink" href="#xh711" title="Permanent link">&para;</a></h4>
<p>This is a 24 bit low sample rate chip using "bit-bang" communications. It is
suitable for filament scales.</p>
<div class="highlight"><pre><span></span><code>[load_cell]
sensor_type: hx711
sclk_pin:
# The pin connected to the HX711 clock line. This parameter must be provided.
dout_pin:
# The pin connected to the HX711 data output line. This parameter must be
# provided.
#gain: A-128
# Valid values for gain are: A-128, A-64, B-32. The default is A-128.
# &#39;A&#39; denotes the input channel and the number denotes the gain. Only the 3
# listed combinations are supported by the chip. Note that changing the gain
# setting also selects the channel being read.
#sample_rate: 80
# Valid values for sample_rate are 80 or 10. The default value is 80.
# This must match the wiring of the chip. The sample rate cannot be changed
# in software.
</code></pre></div>
<h4 id="hx717">HX717<a class="headerlink" href="#hx717" title="Permanent link">&para;</a></h4>
<p>This is the 4x higher sample rate version of the HX711, suitable for probing.</p>
<div class="highlight"><pre><span></span><code>[load_cell]
sensor_type: hx717
sclk_pin:
# The pin connected to the HX717 clock line. This parameter must be provided.
dout_pin:
# The pin connected to the HX717 data output line. This parameter must be
# provided.
#gain: A-128
# Valid values for gain are A-128, B-64, A-64, B-8.
# &#39;A&#39; denotes the input channel and the number denotes the gain setting.
# Only the 4 listed combinations are supported by the chip. Note that
# changing the gain setting also selects the channel being read.
#sample_rate: 320
# Valid values for sample_rate are: 10, 20, 80, 320. The default is 320.
# This must match the wiring of the chip. The sample rate cannot be changed
# in software.
</code></pre></div>
<h4 id="ads1220">ADS1220<a class="headerlink" href="#ads1220" title="Permanent link">&para;</a></h4>
<p>The ADS1220 is a 24 bit ADC supporting up to a 2Khz sample rate configurable in
software.</p>
<div class="highlight"><pre><span></span><code>[load_cell]
sensor_type: ads1220
cs_pin:
# The pin connected to the ADS1220 chip select line. This parameter must
# be provided.
#spi_speed: 512000
# This chip supports 2 speeds: 256000 or 512000. The faster speed is only
# enabled when one of the Turbo sample rates is used. The correct spi_speed
# is selected based on the sample rate.
#spi_bus:
#spi_software_sclk_pin:
#spi_software_mosi_pin:
#spi_software_miso_pin:
# See the &quot;common SPI settings&quot; section for a description of the
# above parameters.
data_ready_pin:
# Pin connected to the ADS1220 data ready line. This parameter must be
# provided.
#gain: 128
# Valid gain values are 128, 64, 32, 16, 8, 4, 2, 1
# The default is 128
#sample_rate: 660
# This chip supports two ranges of sample rates, Normal and Turbo. In turbo
# mode the chips c internal clock runs twice as fast and the SPI communication
# speed is also doubled.
# Normal sample rates: 20, 45, 90, 175, 330, 600, 1000
# Turbo sample rates: 40, 90, 180, 350, 660, 1200, 2000
# The default is 660
</code></pre></div>
<h2 id="board-specific-hardware-support">Board specific hardware support<a class="headerlink" href="#board-specific-hardware-support" title="Permanent link">&para;</a></h2>
<h3 id="sx1509">[sx1509]<a class="headerlink" href="#sx1509" title="Permanent link">&para;</a></h3>
<p>Configure an SX1509 I2C to GPIO expander. Due to the delay incurred by