esp-idf

Historia

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.