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esp-idf/examples/peripherals/spi_master/hd_eeprom
History
wanlei 871b2ba237 spi: simplify readme description of spi examples
2023-02-13 15:44:12 +08:00
..
components/eeprom G0: target component (components/esp32*) doesn't depend on driver anymore 2022-03-02 04:21:00 +00:00
main spi: support H2 spi master, slave, slave_hd driver 2023-02-08 11:38:45 +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.