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ads1220: Add input_mux and vref options to ADS1220 sensor (#6713)

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* fix type comparison bug that stopped the sensor from initializing
* correct mismatch between docs and code for `sample_rate` (fixed to work same as hx71x)
* add input_mux, pga_bypass and vref options
* update configuration reference & fix typo

Signed-off-by: Gareth Farrington <gareth@waves.ky>
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Gareth Farrington 2024-10-24 08:07:05 -07:00 • committed by GitHub
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19
docs/Config_Reference.md
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@ -4729,13 +4729,30 @@ data_ready_pin:
#gain: 128
# Valid gain values are 128, 64, 32, 16, 8, 4, 2, 1
# The default is 128
#pga_bypass: False
# Disable the internal Programmable Gain Amplifier. If
# True the PGA will be disabled for gains 1, 2, and 4. The PGA is always
# enabled for gain settings 8 to 128, regardless of the pga_bypass setting.
# If AVSS is used as an input pga_bypass is forced to True.
# The default is False.
#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
# mode the chip's 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
#input_mux:
# Input multiplexer configuration, select a pair of pins to use. The first pin
# is the positive, AINP, and the second pin is the negative, AINN. Valid
# values are: 'AIN0_AIN1', 'AIN0_AIN2', 'AIN0_AIN3', 'AIN1_AIN2', 'AIN1_AIN3',
# 'AIN2_AIN3', 'AIN1_AIN0', 'AIN3_AIN2', 'AIN0_AVSS', 'AIN1_AVSS', 'AIN2_AVSS'
# and 'AIN3_AVSS'. If AVSS is used the PGA is bypassed and the pga_bypass
# setting will be forced to True.
# The default is AIN0_AIN1.
#vref:
# The selected voltage reference. Valid values are: 'internal', 'REF0', 'REF1'
# and 'analog_supply'. Default is 'internal'.
```
## Board specific hardware support