| # Copyright (c) 2023 TOKITA Hiroshi |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: RaspberryPi Pico family temperature sensor node |
| |
| compatible: "raspberrypi,pico-temp" |
| |
| include: sensor-device.yaml |
| |
| properties: |
| io-channels: |
| required: true |
| description: ADC channel for CPU temperature sensor |
| |
| vbe: |
| type: int |
| default: 706000 |
| description: | |
| Vbe voltage in microvolts at 27 degrees C. Vbe = 0.706V typically. |
| The temperature sensor measures the Vbe voltage of a biased bipolar diode. |
| The temperature calculates from the Vbe voltage measured by the sensor |
| using the following equation typical case. |
| |
| T = 27 - (ADC_Voltage - 0.706)/0.001721 |
| |
| See also the vbe-slope section. |
| |
| vbe-slope: |
| type: int |
| default: -1721 |
| description: | |
| The slope of Vbe voltage in microvolts per degree C. |
| Typically, a slope of -1.721mV per degree. |
| |
| See also the vbe section. |
