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Messages - JeffJway

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TFTs / NHD-1.8-128160EF-CTXI-FT Wakeup from sleep
« on: July 06, 2015, 10:49:15 PM »
I have a question about the NHD-1.8-128160EF-CTXI-FT

I know that I can send the LCD to sleep with the command 0x10 to the LCD, but can you advise me if the Touchscreen is also disabled? Will I still be able to detect if the Touchscreen is touched during Sleep mode?

I have an external IC to handle the Touchscreen data (Semtech's SX8651) and I would like for the user to be able to wake the LCD from sleep mode with a tap on the touch screen.

Is this possible? Will sending the LCD to sleep mode with the 0x10 command cause the touchscreen layer to also turn off and thus not be able to detect screen touches? If I can still detect screen touches or there is a way to enable the touch detection even in sleep mode, is there any significant additional power consumption?


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Evaluation Tools / Re: Re-programming the Firmware on the Eval board
« on: July 02, 2015, 03:29:42 AM »
Thank you,

I've updated and it is working fine now.

3
TFTs / Writing Character strings to NHD-1.8-128160EF-CTXI#
« on: July 01, 2015, 09:36:55 PM »
Has anyone have a good method to send character strings to display on the TFT LCD screen?

All the example codes show how to paint the entire screen a single colour, and from what I understand of the code, it's basically sending the pixel colour for each and every pixel of the 128x160 screen.

But is there a way to send characters onto the screen dynamically? Something similar to the UILCD_WriteData() functions for the COG screens?

Or must I write a rather complicated (in my mind) function that converts ascii characters to pixel maps and writes them onto the screen one by one?

4
Evaluation Tools / Re: Re-programming the Firmware on the Eval board
« on: July 01, 2015, 04:25:04 AM »
Another question,

I have a NHD-1.8-128160EF wired up to the eval board, but I have not been able to get any display out on the screen.

The model choice on the eval board only has NHD-1.8-128160TF as the closest, is this ok? I know the pin difference between the two models and have wired appropriately, but is there anything else I need to watch for?

The BMP files in the SDCard only list files for the TF model, but I would assume that they should be ok to be displayed on the EF model, right?

Thanks.

5
Evaluation Tools / Re: Re-programming the Firmware on the Eval board
« on: June 30, 2015, 09:55:29 PM »
Thank you. I will source for the JTAG programmer cable and see what I can do.

I'm trying to use the eval board to test the LCD capabilities first before attaching it to my current board so as to isolate PCB design problems on my side from LCD testing.

It's a safe way to ensure I get the screen display programming right, especially trying to program the display of characters on a 128x160 screen.

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Evaluation Tools / Re-programming the Firmware on the Eval board
« on: June 29, 2015, 09:08:33 PM »
I recently purchased a NHDev Development Board for use with a NHD-1.8-128160EF-CTXI# screen

I understand that I can turn on the board and select the desired model using the pushbuttons and display the text and BMPs from the SDcard that comes with the board, but how do I change the program that is on the eval board?

I would assume I connect the JTAG connection to a PC, but no cable was provided. And I do not know what program I can use to interface and download the program. I see the example codes and the ELF and HEX files on the website, but I have no means of downloading them into the eval board.

Am I missing something?

Thanks

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