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esp-idf/examples/peripherals/spi_master/hd_eeprom
History
wanlei 6099844644 examples: support spi master examples on esp32cxx
2022-10-25 12:04:22 +08:00
..
components/eeprom G0: target component (components/esp32*) doesn't depend on driver anymore 2022-03-02 04:21:00 +00:00
main examples: support spi master examples on esp32cxx 2022-10-25 12:04:22 +08:00
CMakeLists.txt tools: Increase the minimal supported CMake version to 3.16 2022-06-01 06:35:02 +00:00
README.md examples: support spi master examples on esp32cxx 2022-10-25 12:04:22 +08:00

README.md

Supported Targets ESP32 ESP32-C2 ESP32-C3 ESP32-S2 ESP32-S3

SPI master half duplex EEPROM example

This code demonstrates how to use the SPI master half duplex mode to read/write a AT93C46D EEPROM (8-bit mode). There is also an Kconfig option EXAMPLE_USE_SPI1_PINS allowing use the SPI1 (bus with code Flash connected on official modules).

Connections

For different chip and host used, the connections may be different.

ESP32 ESP32 ESP32S2 ESP32C2 ESP32C3 ESP32S3
Host SPI1 HSPI SPI2 SPI2 SPI2 SPI2
VCC 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V
GND GND GND GND GND GND GND
DO 7 18 37 2 2 13
DI 8 23 35 7 7 11
SK 6 19 36 6 6 12
CS 13 13 34 10 10 10
ORG GND GND GND GND GND GND

Notes

If you meet timeout issues, please check your connections.