Search found 1612 matches

by stevestrong
Thu Jul 28, 2016 12:03 pm
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

Do you supply the board with 3.3V or 5V?
If you use the 3.3V from the blue pill (STM32), it may not be enough to drive the backlight, SD card and the LCD all together.
I would suggest you to use 5V.
by stevestrong
Thu Jul 28, 2016 11:31 am
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

Data lines D0...D7 are switched through U3, which is controlled by the LCD_RD signal.
Be sure that this pin is set to "high" ("1") to use the touch pins.
by stevestrong
Thu Jul 28, 2016 8:28 am
Forum: Maple & Maple mini etc
Topic: Maple Mini SPI Slave - data get corrupt
Replies: 17
Views: 1422

Re: Maple Mini SPI Slave - data get corrupt

reception buffer overflow? (but only after a while? hmmm)
How do you differentiate between spi.read and spi.transfer?
Actually, when receiving SPI data, some data will be anyway read out from the master, and if you don't set it, random data may disturb your spi master.
by stevestrong
Thu Jul 28, 2016 8:08 am
Forum: Projects
Topic: USB TFT Display
Replies: 16
Views: 2916

Re: USB TFT Display

As the interface protocol is known, you could just redirect the high level functions of the original USB driver to serial commands, as simonf suggested.
by stevestrong
Wed Jul 27, 2016 8:39 pm
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

Well, if you do not connect any other pin, and you do not touch the display during measuring, and the plate resistance is changing, it only can hint to a hardware malfunction, i assume.
by stevestrong
Wed Jul 27, 2016 7:37 pm
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

for the touch pins, see defines from the INO sketch. The SD card connection, additionally to 5V extern and GND from pill, is straightforward. Be careful: don't mix port names PAx with Ax ! STM32 TFT PA4 SD_SS PA5 SD_SCK PA6 SD_DO (=MISO) PA7 SD_DI (=MOSI) according to pill pinout ( from here ): http...
by stevestrong
Wed Jul 27, 2016 7:07 pm
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

SD card is working, together with the touch lib. The clou: the board must be powered with 5V! In this case remove the 3.3V wire from the pill. It did not work with the 3.3V from the blue pill, probably the 3.3V regulator of the pill is not strong enough for the SD adapter too. *** Touch demo with ea...
by stevestrong
Tue Jul 26, 2016 6:05 pm
Forum: Code snipplets
Topic: Need help, Why is this code running much slower than Uno?
Replies: 11
Views: 1006

Re: Need help, Why is this code running much slower than Uno?

I don't think that any of stepper and fast LED library was yet tested/ported to STM32duino, so it is your job now to test and debug :)
by stevestrong
Tue Jul 26, 2016 6:01 pm
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

Hi there, I reworked a little bit the touch lib, by introducing some features like: - easily detecting touch and getting coordinates in one function call - mapping of the returned coordinates to the display resolution (default: 320x240) - semi-automatic (user-assisted) easy calibration process (requ...
by stevestrong
Mon Jul 25, 2016 9:19 pm
Forum: Hardware
Topic: 8-bit|16-bit parallell ILI9341
Replies: 251
Views: 24029

Re: 8-bit|16-bit parallell ILI9341

well, I'm still struggling with git, trying to get the master branch, and trying to merge my local changes, which are, somehow, too many, compared to my last activity...
maybe because it is long time ago since I checked out last time.
sorry, but it seems that I will not be able to compile it today :(