esp wroom 32 interface with external flash(winbond 1 mega byte)

kamesh
Posts: 35
Joined: Sat Aug 06, 2016 5:14 am

esp wroom 32 interface with external flash(winbond 1 mega byte)

Postby kamesh » Mon Dec 05, 2016 12:59 pm

hi,

Can anyone worked on espwroom 32 interface with external flash (1 MB). I need to write and read the string on it by using SPI.

ESP_Sprite
Posts: 2832
Joined: Thu Nov 26, 2015 4:08 am

Re: esp wroom 32 interface with external flash(winbond 1 mega byte)

Postby ESP_Sprite » Tue Dec 06, 2016 5:27 am

Can you expand a bit on what you're trying to do? Is the 1MByte flash separate from the flash containing your code? What are you trying to save, and why does it need to be on an external flash? If you only need to save some data, maybe the nvs subsystem in esp-idf can help you?

kamesh
Posts: 35
Joined: Sat Aug 06, 2016 5:14 am

Re: esp wroom 32 interface with external flash(winbond 1 mega byte)

Postby kamesh » Thu Dec 08, 2016 10:46 am

hi,

I want to write and read data from flash. can you give suggestion on that.

ESP_Sprite
Posts: 2832
Joined: Thu Nov 26, 2015 4:08 am

Re: esp wroom 32 interface with external flash(winbond 1 mega byte)

Postby ESP_Sprite » Thu Dec 08, 2016 11:58 am

...Yes, I got that from your first post. Can you also try to see if you can answer the other questions I asked? If not, I'm afraid helping you is going to be pretty hard.

kamesh
Posts: 35
Joined: Sat Aug 06, 2016 5:14 am

Re: esp wroom 32 interface with external flash(winbond 1 mega byte)

Postby kamesh » Thu Dec 08, 2016 12:38 pm

ya i am going to use external flash to store audio files, images. And i need to know how to read and write on inbuilt memory of esp32. pls give me a guidance on that.

ESP_igrr
Posts: 1515
Joined: Tue Dec 01, 2015 8:37 am

Re: esp wroom 32 interface with external flash(winbond 1 mega byte)

Postby ESP_igrr » Thu Dec 08, 2016 2:41 pm

Here's the documentation for flash APIs:
http://esp-idf.readthedocs.io/en/latest ... table-apis

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