Cypress Wifi and SDCard

mangOH Yellow
1

Hello,

I’m wondering if its possible to access both the wifiService provided by the Cypress Wifi chip that is built-in to the yellow along with the SDCard? We would like to have access to a wifi network in addition to access to external storage. Is this possible with Mangoh Yellow? I noted that when I put an SDCard into the slot of the mangoh Yellow, that my wifiService was printing the following lines over and over till I removed the SDCard:

wifiService[2095] | Cypress chip MMC recognition may have been overwritten
Feb 9 13:18:49 swi-mdm9x28-wp user.info Legato: INFO | wifiService[2095] | wlan0 interface was not created by Cypress drivers
Feb 9 13:18:56 swi-mdm9x28-wp user.info Legato: INFO | wifiService[2095] | Cypress chip MMC recognition may have been overwritten

Any ideas why it caused this? Thanks!

2

From mangoh yellow schematic, SDIO pin is input to TXS02612Z which is SDIO port expander. Once SD card detect pin is asserted, SDIO pin from module will switch to SD card slot instead of SDIO for WIFI chipset.

3

Thanks. So that explains why as soon as I removed the SDCard, the wifi was working fine. Does this mean that we cannot have both simultaneously working? Are there any setups or expanders that could be used to allow both an external storage solution and wifi?

4

No, i don’t think so.

In mangoh red or mangoh green board, i tried to use usb thumb drive for external storage and it is working fine