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esp-idf/examples/peripherals/spi_master/hd_eeprom
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Angus Gratton 66fb5a29bb Whitespace: Automated whitespace fixes (large commit) 
Apply the pre-commit hook whitespace fixes to all files in the repo.

(Line endings, blank lines at end of file, trailing whitespace)
2020-11-11 07:36:35 +00:00
..
components/eeprom Whitespace: Automated whitespace fixes (large commit) 2020-11-11 07:36:35 +00:00
main Whitespace: Automated whitespace fixes (large commit) 2020-11-11 07:36:35 +00:00
CMakeLists.txt spi: add eeprom example 2020-03-29 12:52:29 +08:00
Makefile Whitespace: Automated whitespace fixes (large commit) 2020-11-11 07:36:35 +00:00
README.md spi: add eeprom example 2020-03-29 12:52:29 +08:00

README.md

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
Host SPI1 HSPI FSPI
VCC 3.3V 3.3V 3.3V
GND GND GND GND
DO 7 18 37
DI 8 23 35
SK 6 19 36
CS 13 13 34
ORG GND GND GND

Notes

If you meet timeout issues, please check your connections.