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Expand SFlash size

Ulrich Pahl1
Prodigy 190 points
Part Number: CC3235MODSF

We are designing an application with the CC3235MODSF. The module has built in the 32Mbit == 4MByte SFlash. Our application needs more then these 4MByte SFlash. The file system of the CC3235 maintain a maximum of 16 MByte SFlash. The questions are:

1. Is it possible to expand the SFlash size of the CC3235MODSF by connecting a secondary SFlash device.

2. If yes, which SPI interface of the CC3235MODSF should we use to connect the second SFlash, the SPI interface for the external SPI programming (A) or the  the other SPI interface (B)?

3. Does the file system of the CC3235MODSF supports a secondary SFlash device?

Many thanks for your assistance. Regards

Ulrich

  • 0
    Guru 73345 points

    Hi Ulrich,

    Answers to your questions:

    1. No this is not possible. SPI interfaces (FLASH_x) is for Ganag programming only.

    2. If you need bigger storage, you can use SD card or additional flash chip connected to SPI/I2C. But management of this storage will be up to you. There will be no access via sl_ filesystem API.

    3. No.

    Jan