FTDI Community

General Category => Discussion - Software => Topic started by: Yunuce on March 27, 2020, 01:41:57 PM

Title: FT905 I2C Slave Example
Post by: Yunuce on March 27, 2020, 01:41:57 PM

Hello;
I am using FT905(Revision C) MCU on my custom board. I would like to program as an I2C Slave.
I looked 'AN_360 FT9xx Example Applications' and I use I2C Slave Example 1 code to try.
But this code didn't work. I use 'Aardvark I2C/SPI Host Adapter' as master.
I think it cannot detec interrupts. How can I fix this issue?

Best Regards.

Title: Re: FT905 I2C Slave Example
Post by: FTDI Community on March 30, 2020, 04:52:52 PM

Hello,

The SPI slave example in AN_360 is designed to work with the SPI master examples also in AN_360.

Check the 'Aardvark I2C/SPI Host Adapter' SPI master settings and either modify the example code or create your own custom code to communicate with this device.

Best Regards,
FTDI Community

Title: Re: FT905 I2C Slave Example
Post by: Yunuce on March 31, 2020, 02:06:29 PM

Hello,

Thank you for your reply.

I checked the Aardvark Adapter but nothing change.
Also I design a basic custom code to detect an interrupt but it didn't.

Best Regards.

Title: Re: FT905 I2C Slave Example
Post by: FTDI Community on April 01, 2020, 04:47:12 PM

Hello,

Hopefully someone on the community forum has experience with the Aardvark Adapter.

You can refer to our documentation for further information:

AN_365 FT9xx API Programmers Manual (https://brtchip.com/wp-content/uploads/Support/Documentation/Programming_Guides/ICs/MCU/AN_365-FT9xx-API-Programmers-Manual.pdf)
BRT_AN_020 FT90X Revision C User Manual (https://brtchip.com/wp-content/uploads/Support/Documentation/Application_Notes/ICs/MCU/BRT_AN_020_FT90x_Revision_C_User_Manual.pdf)

You must call spi_enable_interrupt in order to use interrupts with SPI.

Best Regards,
FTDI Community