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b12e250b2c
esp-idf/examples/peripherals/spi_master/hd_eeprom
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morris b12e250b2c refactor(examples): reformat peripheral examples with astyle_py
2023-09-28 10:08:04 +08:00
..
components/eeprom refactor(examples): reformat peripheral examples with astyle_py 2023-09-28 10:08:04 +08:00
main refactor(examples): reformat peripheral examples with astyle_py 2023-09-28 10:08:04 +08:00
CMakeLists.txt tools: Increase the minimal supported CMake version to 3.16 2022-06-01 06:35:02 +00:00
README.md spi: simplify readme description of spi examples 2023-02-13 15:44:12 +08:00

README.md

Supported Targets ESP32 ESP32-C2 ESP32-C3 ESP32-C6 ESP32-H2 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. 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.

ESP32
Host SPI1
VCC 3.3V
GND GND
DO 7
DI 8
SK 6
CS 13
ORG GND

Notes

If you meet timeout issues, please check your connections.