Hello,
I'm currently figuring out teensy 4.1 external memory capability using PSRAM and flash memory.
Followed by hackster.io (https://www.hackster.io/news/adding-more-ram-and-flash-to-the-teensy-4-1-89e527855502), I was able to run PSRAM test without a problem.
However, I ran into an issue with flash memory.
This is my teensy 4.1 back panel. A 8MB PSRAM(from PJRC store) and a 128MB flash memory(W25Q128JVSIM) are installed.
Using a given example code from extRAM_SPIFFS_t4\examples\flashtest7FI, I got these outputs.
Attempts to write a buffer to memory, but halted indefinitely.
Erase function forever prints '.' (I ran about 3 hours).
seems like external flash memory is initialized but forever halted on write/erase command... or it's not even responding?
I'm pretty sure I'm missing something or doing something wrong.
Hope I can get some help here.
P.S. Only one different factor compared to hackster.io is a flash memory, he used W25Q128JVSI'Q' and I'm using W25Q128JVSI'M' as a flash memory.
Best,
Alex Han
I'm currently figuring out teensy 4.1 external memory capability using PSRAM and flash memory.
Followed by hackster.io (https://www.hackster.io/news/adding-more-ram-and-flash-to-the-teensy-4-1-89e527855502), I was able to run PSRAM test without a problem.
However, I ran into an issue with flash memory.
This is my teensy 4.1 back panel. A 8MB PSRAM(from PJRC store) and a 128MB flash memory(W25Q128JVSIM) are installed.
Using a given example code from extRAM_SPIFFS_t4\examples\flashtest7FI, I got these outputs.
Attempts to write a buffer to memory, but halted indefinitely.
Erase function forever prints '.' (I ran about 3 hours).
seems like external flash memory is initialized but forever halted on write/erase command... or it's not even responding?
I'm pretty sure I'm missing something or doing something wrong.
Hope I can get some help here.
P.S. Only one different factor compared to hackster.io is a flash memory, he used W25Q128JVSI'Q' and I'm using W25Q128JVSI'M' as a flash memory.
Best,
Alex Han