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ads1220: Add ADS1220 bulk sensor to load_cell

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Add support for the ADS1220 as an alternative to HX71x that supports SPI and higher sample rates.

Signed-off-by: Gareth Farrington <gareth@waves.ky>
This commit is contained in:
Gareth Farrington 2024-06-02 22:33:45 -07:00 • committed by Kevin O'Connor
parent c0095812ff
commit 055f07c638
9 changed files with 411 additions and 1 deletions
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34
docs/Config_Reference.md
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@ -4702,6 +4702,40 @@ dout_pin:
# This must match the wiring of the chip. The sample rate cannot be changed
# in software.
```
### ADS1220
The ADS1220 is a 24 bit ADC supporting up to a 2Khz sample rate configurable in
software.
```
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 "common SPI settings" 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
```
## Board specific hardware support
### [sx1509]