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General Category => Discussion - Software => Topic started by: kiran on August 07, 2023, 10:35:28 AM

Title: FT2232H
Post by: kiran on August 07, 2023, 10:35:28 AM

Hi,
Iam using FT2232h module in MPSSE mode for I2c  and how the remaining 4 pins(ADBUS4-ADBUS7) works,iam using libmpsse library 

Title: Re: FT2232H
Post by: FTDI Community on August 15, 2023, 04:20:12 PM

Hello,

When using LibMPSSE, GPIOL[0:3] can only be used as SPI chip selects.
 
When using LibMPSSE, there is no way to control GPIOL[0:3] as GPIO.
 
LibMPSSE demonstrates controlling the higher line bytes (GPIOH) while using SPI on the lower line bytes using the following functions:
 
FT_WriteGPIO
FT_ReadGPIO
 
If you want to control some of the unused lower line bytes on the same ADBUS as SPI then see AN_411 FTx232H MPSSE I2C Master Example in C (https://ftdichip.com/wp-content/uploads/2020/08/AN_411_FTx232H-MPSSE-I2C-Master-Example-in-Csharp.pdf) which demonstrates GPIO usage with MPSSE using D2xx direct (not using LibMPSSE).
This could be used as a base to understand using both I2C/GPIO in the same code.

Best Regards,
FTDI Community