The Following C Coded Library is used to perform Flash Write, Read and Erase functions on Raspberry Pico 2040.
- The official board of rp2040 uses W25Q16JVUXIQ 16Mbit (2MB) flash chip.
- Runs on 133MHz on single SPI clock and 266/532MHz equivalent Dual/Quad SPI.
- Minimum 100K Program-Erase cycles per sector along with 20-years of data rentention.
- This code is developed for rp2040 on Embedded C Language.
- rp2040 doesn't much resources over the internet to use flash in a simple way and the only option available was a library on Arduino IDE.
- The following library is completely made on C Language and very simple to use.
- A Simple example is available in the main.c with necessary comments on each line of code for better understanding.
- There are 3 functions to perform Read, Write and Erase of pico Flash :
- pico_flash_read() ---> Performs Flash Read
- pico_flash_write() ---> Performs Flash Write
- pico_flash_erase() ---> Performs Flash Erase
- Please note, currently pico_flash_erase() will erase the whole page ( size = 256 ) and not just one memory location.
- Currently, only 32-bit integers can be stored in the pico flash.
- You do have to declare all the varaiables to be stored in flash as shown in the main.c
- I hope you all like it :-D