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@ -66,6 +66,14 @@ Currently QMK supports 25xx-series chips over SPI. As such, requires a working s |
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`#define EXTERNAL_EEPROM_PAGE_SIZE` | `32` | Page size of the EEPROM in bytes, as specified in the datasheet |
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`#define EXTERNAL_EEPROM_PAGE_SIZE` | `32` | Page size of the EEPROM in bytes, as specified in the datasheet |
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`#define EXTERNAL_EEPROM_ADDRESS_SIZE` | `2` | The number of bytes to transmit for the memory location within the EEPROM |
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`#define EXTERNAL_EEPROM_ADDRESS_SIZE` | `2` | The number of bytes to transmit for the memory location within the EEPROM |
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Default values and extended descriptions can be found in `drivers/eeprom/eeprom_spi.h`. |
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Alternatively, there are pre-defined hardware configurations for available chips/modules: |
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Module | Equivalent `#define` | Source |
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-----------------|---------------------------------|------------------------------------------ |
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MB85RS64V FRAM | `define EEPROM_SPI_MB85RS64V` | <https://www.adafruit.com/product/1897> |
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!> There's no way to determine if there is an SPI EEPROM actually responding. Generally, this will result in reads of nothing but zero. |
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!> There's no way to determine if there is an SPI EEPROM actually responding. Generally, this will result in reads of nothing but zero. |
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## Transient Driver configuration :id=transient-eeprom-driver-configuration |
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## Transient Driver configuration :id=transient-eeprom-driver-configuration |
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