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esp-idf/examples/peripherals/spi_master/hd_eeprom
History
wanlei ee6dd6a4a9 fix(spi): clean eeprom example iram usage
2023-11-08 10:51:04 +08:00
..
components/eeprom fix(spi): clean eeprom example iram usage 2023-11-08 10:51:04 +08:00
main refactor(gpio): make gpio driver as component, and fix astyle 2023-11-03 15:42:23 +08:00
CMakeLists.txt tools: Increase the minimal supported CMake version to 3.16 2022-06-01 06:35:02 +00:00
README.md feat(spi_master): p4 enable test and examples 2023-10-08 14:45:52 +08:00

README.md

Supported Targets ESP32 ESP32-C2 ESP32-C3 ESP32-C6 ESP32-H2 ESP32-P4 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.