| # Copyright (c) 2022 Thomas Stranger |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| # Common Properties for the DS2477 and DS2485 I2C 1-Wire masters: |
| |
| include: [w1-master.yaml, i2c-device.yaml] |
| |
| properties: |
| switching-threshold: |
| type: string |
| required: true |
| enum: |
| - "low" |
| - "medium" |
| - "high" |
| - "off" |
| description: | |
| Default Low-to-High Switching Threshold. |
| |
| Only the following values are allowed: |
| low: 0.25 x VCC, no hysteresis |
| medium: 0.40 x VCC, no hysteresis (recommended for most configurations) |
| high: 0.75 x VCC, with hysteresis |
| off: off (chip reset value) |
| |
| active-pull-threshold: |
| type: string |
| required: true |
| enum: |
| - "low" |
| - "medium" |
| - "high" |
| - "off" |
| description: | |
| Default Active Pullup on Threshold configuration. |
| For configurations with a single slave a "low" active pull |
| threshold is recommended. |
| |
| Only the following values are allowed: |
| low: 0.25 x VCC (recommended for most configurations) |
| medium: 0.40 x VCC |
| high: 0.75 x VCC |
| off: off (chip reset value) |
| |
| weak-pullup: |
| type: string |
| required: true |
| enum: |
| - "extern" |
| - "500" |
| - "1000" |
| - "333" |
| description: | |
| Default 1-Wire Weak Pullup Resistance in ohms. |
| For most configurations with a single slave "1000" ohms are recommended, |
| but some devices and multidrop configurations might need a stronger pullup. |
| |
| To enter floating condition, it is suggested to switch the weak-pull up |
| to extern and disable the switching as well as the active-pull threshold. |
| |
| Only the following values are allowed: |
| "extern" (chip reset value) |
| "500" |
| "1000" (recommended for most configurations) |
| "333" |
| |
| standard-slew: |
| type: int |
| default: 150 |
| enum: |
| - 50 |
| - 150 |
| - 1300 |
| description: | |
| Default slew for standard speed mode in ns. Only the following values are |
| allowed: |
| 50 |
| 150 (default; chip reset value) |
| 1300 |
| |
| overdrive-slew: |
| type: int |
| default: 50 |
| enum: |
| - 50 |
| - 150 |
| description: | |
| Default slew for overdrive speed mode in ns. Only the following values are |
| allowed: |
| 50 (default; chip reset value) |
| 150 |