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feat: Add ADC sensor device tree bindings and configuration

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Introduces device tree bindings for custom ADC voltage and current sensors,
allowing for flexible configuration of sensor inputs and associated GPIOs.
This enables proper hardware abstraction for ADC measurements.

The example overlay file
has been removed as its content is now integrated or superseded by the new
binding definitions.
This commit is contained in:
Eduard Iten
2025-07-08 16:43:27 +02:00
parent 2e8a86bc54
commit b11f844415
7 changed files with 333 additions and 7 deletions
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34
software/apps/slave_node/boards/weact_stm32g431_core.overlay
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@@ -11,6 +11,40 @@
s0-gpios = <&gpiob 6 GPIO_ACTIVE_HIGH>; // S0 (PB6) - Status/Select 0 output from VND7050AJ
s1-gpios = <&gpiob 5 GPIO_ACTIVE_HIGH>; // S1 (PB5) - Status/Select 1 output from VND7050AJ
};
adc_sensors {
compatible = "adc-sensors";
supply_voltage: supply-voltage {
compatible = "custom,supply-voltage";
io-channels = <&adc1 1>; /* ADC1 channel 1 (PA0) */
io-channel-names = "voltage";
reference-mv = <3300>;
voltage-divider-ratio = <4>; /* Adjust based on your voltage divider */
/* GPIO control pins using VND7050AJ pins */
sen-gpios = <&gpiob 4 GPIO_ACTIVE_HIGH>; /* SEN (PB4) - enable sensor */
s0-gpios = <&gpiob 6 GPIO_ACTIVE_HIGH>; /* S0 (PB6) - mux select bit 0 */
s1-gpios = <&gpiob 5 GPIO_ACTIVE_HIGH>; /* S1 (PB5) - mux select bit 1 */
measurement-delay-ms = <5>; /* 5ms delay after GPIO setup */
};
motor_current: motor-current {
compatible = "custom,motor-current";
io-channels = <&adc1 1>; /* Same ADC channel, different mux setting */
io-channel-names = "current";
reference-mv = <3300>;
current-sense-resistor-mohm = <100>; /* 100mΩ sense resistor */
/* GPIO control pins using VND7050AJ pins */
sen-gpios = <&gpiob 4 GPIO_ACTIVE_HIGH>; /* SEN (PB4) - enable sensor */
s0-gpios = <&gpiob 6 GPIO_ACTIVE_HIGH>; /* S0 (PB6) - mux select bit 0 */
s1-gpios = <&gpiob 5 GPIO_ACTIVE_HIGH>; /* S1 (PB5) - mux select bit 1 */
measurement-delay-ms = <10>; /* 10ms delay for current settling */
};
};
};
// Clock configuration: Uncomment the following section to use calibrated HSI instead of HSE