FTDI Community
General Category => Discussion - Software => Topic started by: DanTrotts on August 19, 2019, 07:05:25 PM
-
Hi.
I have an Adafruit FT232H board with a connected SHT31-D that I want to read the humidity and temperature from. I want to code this in C++ and not Python and I was wondering if anyone had a simple shell of a C or C++ program that would just show the basics of doing that. I have FTD2XX and libMPSSE-i2c libraries installed on Ubuntu 19.04 release.
I can see the FT232H and read its EEPROM. I know that I have to remove the ftdi_sio and usbserial drivers to be able to talk to it. Where I don't have any practical experience is talking through the FT232H to the SHT31-D using either D2XX or MPSSE with i2c or other protocols.
The SHT31-D is wired with ground, D0 to SCL and D1 tied to D2 going to SDA. I have python code that can read the temp and humidity but I just can't seem to compile a C or C++ program with the right library combinations to be able to make it work.
Any help or pointers would be appreciated.
P.S. I have the following reply from support on the Adafruit support group:
"by adafruit_support_mike on Mon Aug 19, 2019 5:40 am
I'm afraid we don't have any C code for communicating with the FT232H. Maybe someone from the community will have more information."
Regards,
Dan
-
Hello,
Please have a look at the following application notes, which cover I2C examples:
D2XX:
https://www.ftdichip.com/Support/Documents/AppNotes/AN_113_FTDI_Hi_Speed_USB_To_I2C_Example.pdf (https://www.ftdichip.com/Support/Documents/AppNotes/AN_113_FTDI_Hi_Speed_USB_To_I2C_Example.pdf)
https://www.ftdichip.com/Support/Documents/AppNotes/AN_355_FT232H%20MPSSE%20Example%20-%20I2C%20Master%20Interface%20with%20Visual%20Basic.pdf (https://www.ftdichip.com/Support/Documents/AppNotes/AN_355_FT232H%20MPSSE%20Example%20-%20I2C%20Master%20Interface%20with%20Visual%20Basic.pdf)
https://www.ftdichip.com/Support/Documents/AppNotes/AN_411_FTx232H%20MPSSE%20I2C%20Master%20Example%20in%20Csharp.pdf (https://www.ftdichip.com/Support/Documents/AppNotes/AN_411_FTx232H%20MPSSE%20I2C%20Master%20Example%20in%20Csharp.pdf)
LibMPSSE:
https://www.ftdichip.com/Support/Documents/AppNotes/AN_190_C232HM_MPSSE_Cable_in_USB_to_I2C_Interface.pdf (https://www.ftdichip.com/Support/Documents/AppNotes/AN_190_C232HM_MPSSE_Cable_in_USB_to_I2C_Interface.pdf)
The following will also be useful:
https://www.ftdichip.com/Support/Documents/AppNotes/AN_135_MPSSE_Basics.pdf (https://www.ftdichip.com/Support/Documents/AppNotes/AN_135_MPSSE_Basics.pdf)
https://www.ftdichip.com/Support/Documents/AppNotes/AN_108_Command_Processor_for_MPSSE_and_MCU_Host_Bus_Emulation_Modes.pdf (https://www.ftdichip.com/Support/Documents/AppNotes/AN_108_Command_Processor_for_MPSSE_and_MCU_Host_Bus_Emulation_Modes.pdf)
Best Regards,
FTDI Community