84 lines
1.8 KiB
Markdown
84 lines
1.8 KiB
Markdown
# Adding a new board
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## Charger parameters
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- `CHARGER_CHARGE_CURRENT`: Currently the same for all boards (1536).
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- `CHARGER_CHARGE_VOLTAGE`: On the battery, look for 充电限制电压 (charge limit
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voltage). Convert this from volts to millivolts.
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- `CHARGER_INPUT_CURRENT`: On the charger, look for DC output. Convert the
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current from amps to milliamps.
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#### Example
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The gaze15 battery has
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```
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充电限制电压: 16.8Vdc
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```
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and its charger has
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```
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DC OUTPUT (输出/輸出): 19.5V⎓9.23A 180W
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```
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This gives
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```
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CFLAGS+=\
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-DCHARGER_CHARGE_CURRENT=1536 \
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-DCHARGER_CHARGE_VOLTAGE=16800 \
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-DCHARGER_INPUT_CURRENT=9230
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```
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## GPIOs
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Use ecsim on the proprietary firmware to generate the configuration. Modify
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`src/main.rs` if the EC needs to be changed from 5570 to 8587. Refer to
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`gpio.sh`, which can automate the process.
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Use the EC page in the schematics to label everything.
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Not everything will be generated correctly, so check them manually when
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labeling. Examples include the M block not being included in the generated
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output, and `CCD_EN` being configured as `GPIO_IN` instead of `GPIO_OUT`.
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## Keyboard backlight
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Many models have backlit or RGB keyboards. The EC page in the board schematics
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should be sufficient to determine the method used to control the backlight.
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### DAC
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One of the DACs is be used for controlling the backlight level.
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Examples:
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- galp4
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- lemp9
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These models use `KBLIGHT_ADJ` to control the backlight level.
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### PWM
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One PWM line is used for controlling brightness, and three others are used for
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setting the red, green, and blue colors.
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Examples:
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- addw2
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- gaze15
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- oryp6
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These models use `EC_PWM_LEDKB_{R,G,B}` to control the color of the keys.
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### I2C
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I2C is used to communicate with the MCU that controls the keyboard backlight
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and color.
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Examples:
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- darp6
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- oryp5
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