Marzogh/SPIFlash: Arduino Library for Winbond Flash Memory Chips

Please report any bugs in issues.</sup>

This Arduino library is for use with Winbond serial flash memory chips. In its current form it supports identifying the flash chip and its various features; automatic address allocation and management; reading and writing bytes/chars/ints/longs/floats/Strings from and to various locations; reading and writing pages of bytes; continous reading/writing of data from/to arrays of bytes/chars; sector, block and chip erase; and powering down for low power operation.

• For details of the Winbond Flash chips compatible with this library please refer to the Excel spreadsheet in the Extras folder.

• IDE v1.5.x
• IDE v1.6.0-v1.6.5
• IDE v1.6.9-v1.6.12
• IDE v1.8.2

• Arduino Uno
• Arduino Leonardo
• Arduino Due
• Arduino Zero
• ESP8266 Boards (On the Arduino IDE)
• Simblee Boards (On the Arduino IDE)
• RTL8195A (tested and enabled by @boseji on 02.03.17)
• Arduino Mega
• Arduino Micro
• Arduino Fio

• ESP32 Boards (Tested on the Adafruit Esp32 Feather) The library is known to work with the ESP32 core as of the current commit <a href = "https://github.com/espressif/arduino-esp32/tree/9618eec19ea470bb59b9a25ebeb8c0c516ca89cc">9618eec</a> on 02.08.2017. NOTE: ESP32 boards usually have an SPIFlash already attached to their SS pin, so the user has to declare the ChipSelect pin being used when the constructor is declared - for exampleSPIFlash flash(33); ESP32 support will remain in beta till the ESP32 core can be installed via the Arduino boards manager.

• Winbond
  • W25X05CL (64K-Byte)
  • W25X10BV (128K-Byte)
  • W25X20BV (256K-Byte)
  • W25X40BV (512K-Byte)
  • W25Q80BV (1M-Byte)
  • W25Q16BV (2M-Byte)
  • W25Q32BV (4M-Byte)
  • W25Q64BV (8M-Byte)
  • W25Q128BV (16M-Byte)
  • W25Q256FV (32M-Byte)
• Other Winbond flash chips can be used by declaring their size in bits as an argument in begin())

• Open the Arduino IDE.
• Go to Sketch > Include Library > Manage libraries.
• Search for SPIFlash.
• Install the latest version.

• Click on the 'Download zip' below.
• Unzip the archive and rename resulting folder to 'SPIFlash'
• Move the folder to your libraries folder (~/sketches/libraries)

• ATTiny85 support available again.

• Arduino Zero now fully supported.

• Updated to be compatible with the ESP32 core for Arduino as of the current commit <a href = "https://github.com/espressif/arduino-esp32/tree/9618eec19ea470bb59b9a25ebeb8c0c516ca89cc">9618eec</a> on 02.08.2017. For some unknown reason, SPI clock speeds higher than board speed/4 are not stable and so, the clock speed for ESP32 dev boards has currently been throttled to 20MHz. NOTE: ESP32 boards usually have an SPIFlash already attached to their SS pin, so the user has to declare the ChipSelect pin being used when the constructor is declared - for exampleSPIFlash flash(33);