I want to read data from 8 channels of ADC, when configuring all channels it shows that some of the pins are pre-occupied by other nodes. i have applied different things to resolve this issue including these GPIO overlays Can't override pin assignment in .overlay , but an error occurred, kindly tell me how should i resolve this issue.
This is my Overlay file:
/ { pinctrl: pin-controller{ /delete-node/ &uart0_default; /delete-node/ &uart0_sleep; }; zephyr,user { io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>, <&adc 4>, <&adc 5>, <&adc 6>, <&adc 7>; }; }; &adc { #address-cells = <1>; #size-cells = <0>; channel@0 { reg = <0>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN0>; /* P0.03 */ zephyr,resolution = <12>; }; channel@1 { reg = <1>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN1>; /* P0.03 */ zephyr,resolution = <12>; }; channel@2 { reg = <2>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN2>; /* P0.03 */ zephyr,resolution = <12>; }; channel@3 { reg = <3>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN3>; /* P0.03 */ zephyr,resolution = <12>; }; channel@4 { reg = <4>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN4>; /* P0.03 */ zephyr,resolution = <12>; }; channel@5 { reg = <5>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN5>; /* P0.03 */ zephyr,resolution = <12>; };channel@6 { reg = <6>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN6>; /* P0.03 */ zephyr,resolution = <12>; }; channel@7 { reg = <7>; zephyr,gain = "ADC_GAIN_1_6"; zephyr,reference = "ADC_REF_INTERNAL"; zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; zephyr,input-positive = <NRF_SAADC_AIN7>; /* P0.03 */ zephyr,resolution = <12>; }; };
This the error thrown:
Problem window:
Before adding delete node uart0-default and sleep, Pin 5 was also shown in the problem as preoccupied.