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Messages - krish_iyer

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Discussion - Software / Re: Performance difference in libft4222's windows and linux drivers

« on: June 27, 2020, 04:20:57 PM »

Ok, here's the issue. imprint on my chip ends with 'D' hence I am actually using revision 'D' of the silicon. In windows with "FT prog" software, my chip version is detected as 'D' but in linux it's 'A'. Also, I am using latest Llibft4222(linux) version.

I am using Ubuntu 18.04 on 64bit machine.

am I missing something?

Discussion - Software / Performance difference in libft4222's windows and linux drivers

« on: June 24, 2020, 06:58:23 AM »

I have been interfacing an IMU(BNO080) with an umft4222ev board. I am interfacing it over I2C protocol and wrote exact code for windows and linux. The windows program works perfectly fine but the linux program couldn't read on time(within 10ms of data available) due to which my sensor resets. I feel the I2C master write function is missing some clock cycles or resolution. Is there any workaround for this?

Details of the device: 'FT4222 A' Chip version: 42220400, LibFT4222 version: 01040409

Discussion - Hardware / UMFT4222EV: Configuring GPIO in INPUT mode

« on: June 18, 2020, 04:22:41 AM »

Hope you are well and safe in this pandemic crisis.

Actually, I was trying example code to configure GPIO in input mode but unfortunately it is not working. I am using UMFT4222EV. I have linked my code[1]. Also while configuring GPIO2 in input mode does turn of the on board LED because LED is connected to GPIO2 but anyhow it's not able to read.

Chip rev: FT4222 A
MODE: Mode 0
OS: Ubuntu 18.04(Linux)
lib version: 1.4.4.9
cc version: 7.5.0
Thanks,

[1]: https://gist.github.com/krish-iyer/13a36029c8df7a888b4a83fdd05690a3