Hello,

Our upcoming BT815/6 series of EVE ICs also include 1MByte of internal graphics RAM. However these new ICs include support for external flash memory which can be used to store/offload graphics elements such as images, custom fonts and widgets from the integrated RAM.
You can find out more about the BT815/6 at the following page:
http://brtchip.com/bt81x/

Best Regards,
FTDI Community

Hello,

There should be no problems running the example code provided with the library.

Does the same thing happen on a different Windows PC?

Please ensure that you are using the latest version LibFT4222 Windows Library (v1.4.1) and Examples.

Mode 3 is the correct mode for using the device as 1 port for data stream (I2C or SPI) as per Table 5.1 in the FT4222H Datasheet.

You could try completely uninstalling and reinstalling the FTDI drivers. See FTDI_Driver_Uninstall_with_2-12-28_Install.pdf for details on how to do this.

Best Regards,
FTDI Community

Hello,

Please see AN_151 Vinculum II User Guide for all available functionality.

You can also use the IDE's help menu to easily search. This function might be useful to you:



If you have any further detailed questions which might need involvement from R&D, please contust us directly.

Best Regards,
FTDI Community

Hello Stephen,

An example demonstrating 9-bit UART can be found at the following link (for the benefit of the community):

UART_9Bit_mode_example.zip

This should be included as part of the API in a future release.

Best Regards,
FTDI Community

Hi,
Each part is saved in a similar way. For example, as shown below we create 2 static sections.


void initMainStaticBackground1(void)   
{   

//########### Await FIFO Empty ###########

WaitCmdFifoEmpty();  //wait for FIFO read/write

//########### Create the static list in CMD FIFO ###########

ft813memWrite32(RAM_CMD + cmdOffset, (CMD_DLSTART));   // Start the display list
cmdOffset = incCMDOffset(cmdOffset, 4);   
       
[Your other commands here]
[Not including CLEAR(1,1,1) or DISPLAY or SWAP]
     

//########### Execute the commands to make the display list in RAM_DL ###########

ft813memWrite16(REG_CMD_WRITE, (cmdOffset));               // Update the ring buffer pointer so the graphics processor starts executing 

//########### Await completion ###########

WaitCmdFifoEmpty();

//########### Find the end of the new DL ###########

Static1Length = ft813memRead16(REG_CMD_DL);


//########### Copy the created DL into RAM_G @ address 4000 in this case ###########

// Could use your command
// ft813memWrite32(RAM_CMD + cmdOffset, CMD_MEMCPY(4000L, RAM_DL, dloffset));
// instead of this code below

ft813memWrite32(RAM_CMD + cmdOffset, CMD_MEMCPY);
cmdOffset = incCMDOffset(cmdOffset, 4);
ft813memWrite32(RAM_CMD + cmdOffset, StaticLocation1);
cmdOffset = incCMDOffset(cmdOffset, 4);
ft813memWrite32(RAM_CMD + cmdOffset, RAM_DL);
cmdOffset = incCMDOffset(cmdOffset, 4);
ft813memWrite32(RAM_CMD + cmdOffset, Static1Length);
cmdOffset = incCMDOffset(cmdOffset, 4);

ft813memWrite16(REG_CMD_WRITE, (cmdOffset));

WaitCmdFifoEmpty();

//########### Your static part of the list will now be available ###########
}




void initMainStaticBackground2(void)   
{   

//########### Await FIFO Empty ###########

WaitCmdFifoEmpty();  //wait for FIFO read/write

//########### Create the static list in CMD FIFO ###########

ft813memWrite32(RAM_CMD + cmdOffset, (CMD_DLSTART));   // Start the display list
cmdOffset = incCMDOffset(cmdOffset, 4);   
       
[Your other commands here]
[Not including CLEAR(1,1,1) or DISPLAY or SWAP]
     

//########### Execute the commands to make the display list in RAM_DL ###########

ft813memWrite16(REG_CMD_WRITE, (cmdOffset));               // Update the ring buffer pointer so the graphics processor starts executing 

//########### Await completion ###########

WaitCmdFifoEmpty();

//########### Find the end of the new DL ###########

Static2Length= ft813memRead16(REG_CMD_DL);


//########### Copy the created DL into RAM_G @ address 4000 in this case ###########

// Could use your command
// ft813memWrite32(RAM_CMD + cmdOffset, CMD_MEMCPY(4000L, RAM_DL, dloffset));
// instead of this code below

ft813memWrite32(RAM_CMD + cmdOffset, CMD_MEMCPY);
cmdOffset = incCMDOffset(cmdOffset, 4);
ft813memWrite32(RAM_CMD + cmdOffset, StaticLocation2);
cmdOffset = incCMDOffset(cmdOffset, 4);
ft813memWrite32(RAM_CMD + cmdOffset, RAM_DL);
cmdOffset = incCMDOffset(cmdOffset, 4);
ft813memWrite32(RAM_CMD + cmdOffset, Static2Length)
cmdOffset = incCMDOffset(cmdOffset, 4);

ft813memWrite16(REG_CMD_WRITE, (cmdOffset));

WaitCmdFifoEmpty();

//########### Your static part of the list will now be available ###########
}



Your code should keep a note of StaticLocation1, Static1Length, StaticLocation2, Static2Length, as these are required when recalling the sections with Append.

Ensure that the saved sections don't overlap. You can assure this by taking account the size of each static section (e.g.  end of static section1 would be StaticLocation1 + Static1Length)

We have an example in the application note below (see 4.3.2 onwards) where we make a chart using 2 static sections (a background and a scale) and then add the line. This is in Arduino format but uses the same techniques.
http://brtchip.com/wp-content/uploads/Support/Documentation/Application_Notes/Modules/EVE/AN_356-FT800-Interfacing-I2C-Sensor-to-VM800P.pdf

Regards, FTDI Community



 

Hello,

Unfortunately we don't have any particular experience using the PCA9570.

However, we do provide code examples as part of the LibFT4222, so it would be worth taking a look at these:

http://www.ftdichip.com/Products/ICs/FT4222H.html

There is also a lot of information in LibFT4222 User Guide including details of the FT4222_STATUS return codes (Appendix A – Enumeration and Structure Definitions) and FT4222_I2CMaster_GetStatus controllerStatus bit definitions which should help with your debug.

Best Regards,
FTDI Community

Hi,

We have a summary of how to load the data in the application note below (see pages 18 and 19 especially)

http://brtchip.com/wp-content/uploads/Support/Documentation/Application_Notes/ICs/EVE/BRT_AN_008_FT81x_Creating_a_Simple_Library_For_PIC_MCU.pdf

In the code below, you would need to take account of the circular nature of the buffer so that the data does not run beyond the end of the 4K buffer. You would also need to check the read and write pointers to ensure that there is sufficient space in the buffer. Hopefully the flow chart and sample code linked in the application note above will help.
 
   for (i = 0; i < length; i++)
   {
     ft800memWrite8(RAM_CMD + cmdOffset, img);   
      cmdOffset++;
   }
Best regards, FTDI Community