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27 lines
994 B
Markdown
27 lines
994 B
Markdown
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
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| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
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## SPI master half duplex EEPROM example
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This code demonstrates how to use the SPI master half duplex mode to read/write a AT93C46D
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EEPROM (8-bit mode). There is also an Kconfig option `EXAMPLE_USE_SPI1_PINS` allowing use the
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SPI1 (bus with code Flash connected on official modules).
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### Connections
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For different chip and host used, the connections may be different. Here show a example diagram of hardware connection, you can freely change the GPIO defined in start of `main/spi_eeprom_main.c` and change the hardware relatively.
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| | ESP32 |
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| ---- | ----- |
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| Host | SPI1 |
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| VCC | 3.3V |
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| GND | GND |
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| DO | 7 |
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| DI | 8 |
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| SK | 6 |
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| CS | 13 |
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| ORG | GND |
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### Notes
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If you meet timeout issues, please check your connections. |