Multiple ADIN1110 on one microcontroller

Question

I am currently working on a project where I would want multiple ADIN1110's connected to a single microcontroller in order to talk to multiple edge nodes at one time. However, there seems to be a problem when initializing the second ADIN1110. When the second one is brought online, it overwrites the configuration of the previous one and reports that the link is down. Also, transmission of data returns a fail. I am assuming that this is some sort of driver issue where the second object of the adin1110 class is using memory that the first object uses, causing an overwrite. Any help would be greatly appreciated.

ADIApproved · Accepted Answer

Hi, 
 In our example code we are showing just one instance. 
 Driver itself is not limited by number of devices but there is need of extra software. It depends on how you are going to use SPI interfaces i.e single SPI with different CS or different SPI chips. 
 There could be multiple approaches to archive this. I would recommend to use different BSP read/write call backs for different driver instances. As part of HAL initialization map corresponding spi read/write callback to hDevice instance. For this you may need to pass hDevice instance to HAL. 
 #define ADI_HAL_SPI_READ_WRITE(...) HAL_SpiReadWrite(__VA_ARGS__) 
 Again it is up to you based on your hardware design. 
 Thanks, 
 Jayapal)

ADIApproved · Answer

Hi, 
 There will be two interrupts one is SPI interrupt from MCU and other one is MAC interrupt from ADIN1110 (INT_N). You need to specify GPIO pin number for INT_N interrupt and SPI interface for SPI interrupt in bsp_config.h for both driver instances. 
 Followed by you can register link change callback for both driver instances separately using ADIN1110_RegisterCallback. 
 
 Regarding adin1110_SetUserContext API, this is to set user context buffer for application and this buffer is only for application use. 
 Regard's, 
 Jayapal

SLA Status	Assignee	Support Status
SLA Closed.	RGrau	Closed

Popular Forums

Product Forums

Application Forums

Design Center Forums

Highlighted Webinar

Places

Libraries

Challenge Yourself!

What's Brewing

Places

Resources

Visit ContentZone

The Latest Read

New Release

Recent Technical Insights

SLA Information

Products Mentioned

Associated Drivers

Associated Drivers

Thread Details

Multiple ADIN1110 on one microcontroller

Thread Summary

Before You Switch