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Messages - FTDI Community

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Discussion - Software / Re: FT232H 245 FIFO problems (edited)
« on: September 25, 2019, 03:51:10 PM »

Please see the following App Note which should make things a bit clearer for you:

TN_167 FTDI FIFO Basics

It includes some simple software examples.

Best Regards,
FTDI Community

Discussion - Software / Re: Prog crashes on Windows 10
« on: September 24, 2019, 04:26:37 PM »

This issue is caused by other HID class devices connected to the PC.
Did you try disconnecting everything (apart from mouse/keyboard)?

I have a beta for you to try to resolve the issue:

FT_Prog_v0.0.94.440 Installer.zip

Can you please test this out and give us any feedback?

FTDI Community

Discussion - Software / Re: VNC2 Not Connecting to PC
« on: September 23, 2019, 04:27:15 PM »

How are you connecting to the Module? If you want to contact email support with a picture showing your setup we can advise. Please contact support1@ftdchip.com with your setup details and we can investigate.

FTDI Community

Discussion - Drivers / Re: LibFT260.dll 64-bit
« on: September 23, 2019, 03:44:46 PM »

We have a new version which includes a 64-bit DLL. You can find it here. It's just about to be put on our website too but you can download it here at the moment.


Best Regards, FTDI Community

Discussion - Drivers / Re: First asynch FIFO read always takes 3 seconds
« on: September 19, 2019, 04:36:51 PM »
Hello Mike,

Which OS are you using?

Have you tested without the C# wrapper?

See TN_167 FTDI FIFO Basics for some useful information and basic test code.

Has your application set flow control for RTS_CTS?

Best Regards,
FTDI Community

Discussion - Hardware / Re: FT601 FT245 mode: small IN transfers
« on: September 18, 2019, 02:37:00 PM »

Please can you contact email support (support1@ftdichip.com) with a screenshot of the settings of your chip as seen in the FT60x Chip Configuration Programmer.

FTDI Community


Either of these devices should be a good solution for reading sensors. Do you have any additional requirements such as do the sensors need clock stretching? Also, will you be polling the interrupt lines normally and doing a read over I2C to a sensor when it flags a result being ready?

You can address multiple slaves with either FT260 or FT232H.

As you mentioned, we have a few software examples for the FT232H and it uses our standard FTDI driver. The FT260 uses the Windows HID driver and you can either program with low-level HID request or can use our LibFT260 library in your application to allow the use of more user-friendly calls such as I2C_Write etc.    Which programming language would you be using?

For GPIO, the FT232H would allow the unused port pins to be GPIO (usually up to 12 although some will be output until configured and may need a buffer or series resistor if the sensor will drive a signal in). An I/O expander would be another option and would share the I2C bus.

Best Regards, FTDI Community


Discussion - Drivers / Re: Purpose of FT4222_SetClock()
« on: September 12, 2019, 04:33:10 PM »

The FT4222H operates with a 12 MHz crystal (or oscillator) and generates a standard internal 480 MHz clock for the USB interface. The Clock Synthesizer takes the 480MHz clock from the embedded UTMI PHY and generates the 80MHz, 60MHz, 48MHz and 24MHz as reference clocks. The user can select one of these reference clocks via the API, FT4222_SetClock which is defined in LibFT4222, as the system operating clock. The system operating clock will be the base and used by the embedded functions to generate the required interface clock.

AN_329_User_Guide_for_LibFT4222 states the I2C master speed cat be between 60kbps and 3400kbps.

It ignores the calculation when i2c master frequency is not in this range.

Add 1K resistor on R18 and R19 for I2C external bus pull-up.

Best Regards,
FTDI Community

General Discussion / Re: FT813 Custome Font Text
« on: September 12, 2019, 12:19:49 PM »

Sorry, must have pasted the link back in without the password after a couple minutes of fighting with the hyperlink.
This one should work now:

Best Regards,
FTDI Community

Discussion - Software / Re: FT813 (or BT815) few fonts at the same time.
« on: September 12, 2019, 11:49:47 AM »

Yes here is an example of SetFont2 below.

Also, as Rudolph mentioned, the BT81x can use font .glyph flies directly from FLASH. But the .xfont file should be copied to RAM_G. This can either be stored on the MCU or can be stored on flash and then copied by your code to RAM_G.

Code: [Select]
void SAMAPP_ExtendedFormat_Font()
SAMAPP_API_Screen("Unicode Font");
Gpu_FontsExt_t font;
uint32_t fontAddr = RAM_G;
//Load glyph file into BT815's flash
//Load xfont file into graphics RAM

/* Switch Flash to FULL Mode */
Gpu_Hal_LoadImageToMemory(g_phost, TEST_DIR "\\mssong_20.xfont", fontAddr, LOAD);

App_WrCoCmd_Buffer(g_phost, CLEAR(1, 1, 1));
App_WrCoCmd_Buffer(g_phost, COLOR_RGB(255, 255, 255));

Gpu_CoCmd_SetFont2(g_phost, UNICODE_HANDLE, fontAddr, 0);
Gpu_CoCmd_Text(g_phost, 0, 0, UNICODE_HANDLE, 0, u8"BRT的EVE技术是一个革命性的概念,");
Gpu_CoCmd_Text(g_phost, 0, 30, UNICODE_HANDLE, 0, u8"利用面向对象的方法创建高质量的人机界面(HMI) 同时支持显示,");
Gpu_CoCmd_Text(g_phost, 0, 60, UNICODE_HANDLE, 0, u8"音频和触摸功能。");
App_WrCoCmd_Buffer(g_phost, DISPLAY());

Best Regards, BRT Community

That's another good suggestion Rudolph,

You could either scale the image up for the main image or could even load a small version of the same high quality image currently displayed, scale it up and display it in place of the main image whilst replacing the data of the main image. That way the image would appear to remain on-screen whilst you change the high quality one un-seen by the user.

Alternatively, with fast SPI transfers, you can load the image very quickly and so the user won't notice the change (some of our examples where we play video are basically loading a series of images from an SD or camera in this way such as this one https://brtchip.com/wp-content/uploads/Support/Documentation/Application_Notes/ICs/MCU/BRT_AN_018-FT90x-Camera-to-EVE.pdf)

Best Regards, FTDI Community


Please contact email support on support1@ftdichip.com and we will look into your issues further and where appropriate post the outcome here.

FTDI Community

General Discussion / Re: FT813 Custome Font Text
« on: September 11, 2019, 10:52:11 AM »

Copying the URL into your browser should work as noted in the last post.
It covers pulling the font widths from the data and printing the characters correctly with these widths.

I will pass this on to the development team to see if they can adjust the font convertor utility accordingly.

Best Regards,
FTDI Community

General Discussion / Re: FT813 Custome Font Text
« on: September 10, 2019, 04:09:11 PM »

Rudolph may be able to advise you on his Library's operation, but it looks like maybe a font width issue.

You can find a draft of an upcoming application note which covers the use of special font characters at the following:

Please let me know if this helps.

Best Regards,
FTDI Community

EDIT: the hyperlink seems to be messing with the URL, if you copy it into your browser it should work fine.

Discussion - Software / Re: EVE image loading problem
« on: September 10, 2019, 01:46:43 PM »

Yes would you be able to provide the converted images and code that you're using?

Best Regards,
FTDI Community

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