Hello,
my 4MB SPI flash memory chips (winbond W25Q64) arrived.
The only arduino library for that chips doesn't work/compile with/on the STM32_arduino, so I rewrote the whole structure into one test sketch before putting it into a library again.
I've done also a complete japanese/english translation (google translator japanese<> works very well!!) for all necessary notes
I'll wait until we get a complete DMA SPI interface library before I'll do further things with it.
Every function works as expected, highest SPI speed runs smooth out of the box (the chip is built for SPI speed beyond 100MHZ)
Here is the aliexpress link, where I bought them (about 30pcs because of shipping costs):
http://tinyurl.com/l2eu973
If anyone is interested, here is the test code:
regards
Matthias
winbond_template_working.zip (4.15 KB)