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by Primerypile
Mon Jul 16, 2018 11:16 am
Forum: Compute Module
Topic: Integrating BCM43438-based SDIO WiFi Module on CM3
Replies: 6
Views: 6346

Re: Integrating BCM43438-based SDIO WiFi Module on CM3

According to the module's datasheet the external clock should not be necessary. We are using the internal clock. The chip reset line has been connected to our reset-logic. I don't really know what that 'reset logic' entails, but we have the ability to reset the module from software if need be. Our E...
by Primerypile
Sun Jul 01, 2018 6:27 pm
Forum: Compute Module
Topic: Integrating BCM43438-based SDIO WiFi Module on CM3
Replies: 6
Views: 6346

Re: Integrating BCM43438-based SDIO WiFi Module on CM3

Hello John Thanks for your suggestions. We've only connected the SDIO pins at the moment. Reset and clock pins on the WiFi module are fixed to be always on and to use internal clock, respectively. It is my understanding that this setup should work. However, I think it would be cleaner/better to use ...
by Primerypile
Fri Jun 29, 2018 1:57 pm
Forum: Compute Module
Topic: Integrating BCM43438-based SDIO WiFi Module on CM3
Replies: 6
Views: 6346

Re: Integrating BCM43438-based SDIO WiFi Module on CM3

Update: It works, but is kinda flaky. When I load the driver the first time I get the behavior as described in the previous post. However, if unload and reload the driver a second time the WiFi module gets correctly initialized (sometimes): My commands: sudo dtoverlay sdio poll_once=off sudo modpro...
by Primerypile
Fri Jun 29, 2018 11:26 am
Forum: Compute Module
Topic: Integrating BCM43438-based SDIO WiFi Module on CM3
Replies: 6
Views: 6346

Integrating BCM43438-based SDIO WiFi Module on CM3

Hi all I'm trying to integrate a SparkLan SWDB-104 WiFi module on a compute module 3. This module uses a broadcom chipset (BCM43438). To my knowledge this is the same chipset which was also used on the RPI3. The module is connected on the secondary SDIO port on the compute module. In order to activa...

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