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@@ -25,7 +25,21 @@ XMT - 3.3V
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Use the `squeezelite-esp32-I2S-4MFlash-sdkconfig.defaults` configuration file.
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## Configuration
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-To access NVS, in the webUI, go to credits and select "shows nvs editor". Go into the NVS editor tab to change NFS parameters
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+To access NVS, in the webUI, go to credits and select "shows nvs editor". Go into the NVS editor tab to change NFS parameters. In syntax description below \<\> means a value while \[\] describe optional parameters.
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+
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+### I2C
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+The NVS parameter "i2c_config" set the I2C's gpio needed to enable. Leave it blank to disable I2C usage. Note that on SqueezeAMP, port must be 1. Syntax is
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+```
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+sda=<gpio_num>,scl=<gpio_num>,port=<0|1>
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+```
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+
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+## Display
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+The NVS parameter "display_config" sets the parameters for an optional display. Syntax is
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+```
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+I2C|SPI,width=<pixels>,height=<pixels>[,address=<i2c_address>][,HFlip][,VFlip]
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+```
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+- VFlip and HFlip are optional can be used to change display orientation
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+
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### Buttons
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Buttons are described using a JSON string with the following syntax
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```
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philippe44