Search found 20 matches

by fari
Tue Jul 11, 2017 8:02 am
Forum: Libraries & Hardware
Topic: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi
Replies: 178
Views: 6866

Re: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi

Hi Aleksey!

I have got this display running! Please refer to my post view pages ago.
I could send you my functioning exmaple, if you wish!

Best regards
by fari
Fri May 05, 2017 3:07 pm
Forum: Libraries & Hardware
Topic: OneWire slave interrupt based lib
Replies: 4
Views: 419

Re: OneWire slave interrupt based lib

Thanks Youen! I hope, that every one can use this library with stm32
Sorry! I had no time to archive my bug fix of the 1- wire lib in git!
by fari
Sun Mar 19, 2017 12:27 pm
Forum: Libraries & Hardware
Topic: Adafruit BMP085 and HTU21D libraries work good with HardWire
Replies: 2
Views: 794

Re: Adafruit BMP085 and HTU21D libraries work good with HardWire

Hi Oleg! I have been trying to run the measurement with HTU21D since few days, but with no success. I have mad the changes in the .cpp files (wire exchanged by HWire) and connected the sensor to PB7 and PB6 (Pull up 4.7k and 3.3V VCC) All I get ist 998 (time out). Can you please give me any hint, wh...
by fari
Wed Mar 08, 2017 12:08 pm
Forum: Libraries & Hardware
Topic: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi
Replies: 178
Views: 6866

Re: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi

Yes! You are right Steve! but I had several problems: - The described pin out of the display on the site of the vender was wrong :x (I tried at this time to lower the frequency, but with the wrong wiring!!! :roll: ). This problem was fundamental - The Init sequence had to be changed slightly ( I hav...
by fari
Tue Mar 07, 2017 4:56 pm
Forum: Libraries & Hardware
Topic: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi
Replies: 178
Views: 6866

Re: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi

Thanks Steve, David and Stephen for your help!

Finally I have got it done! I have found out the right initialisation sequence. The SPI frequency is crucial. The display works only in the range between 12MHz and 32MHz only. Any frequency out of this range lead to white flashing on the screen!
by fari
Mon Mar 06, 2017 11:58 am
Forum: Libraries & Hardware
Topic: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi
Replies: 178
Views: 6866

Re: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi

Thanks Steve, David and Stephen for your precious hints!

I will work through your hints. Hopefully one of them would work.
by fari
Sat Mar 04, 2017 7:32 am
Forum: Libraries & Hardware
Topic: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi
Replies: 178
Views: 6866

Re: Lib for ILI9486 - 3.5 inch 480x320 touch TFT for RPi

Hello Steve! I have followed all the hints above, but I could not run any demo on this display. The device I have bought looks exactly the same as yours at the beginning of this post. I have tried your example with no positive results. Obviously there is a serial parallel converter on the board, tha...
by fari
Wed Mar 01, 2017 7:44 pm
Forum: Libraries & Hardware
Topic: Hardware-I2C issue HTU21DF
Replies: 3
Views: 283

Solved: Hardware-I2C issue HTU21DF

I have found the root of the problems: - The HTU21 mini board had no connected pullup resistor, even the vendor specification states, that the pullup is active. That is why the i2c stm32 libs failed - Now I know, that the stm32 libs enter an endless loop if the i2c pins loses the voltage. Here might...
by fari
Wed Mar 01, 2017 9:14 am
Forum: Libraries & Hardware
Topic: Hardware-I2C issue HTU21DF
Replies: 3
Views: 283

Re: Hardware-I2C issue HTU21DF

Thanks for your hint! I will give a try!
by fari
Tue Feb 28, 2017 10:09 pm
Forum: Libraries & Hardware
Topic: OneWire slave interrupt based lib
Replies: 4
Views: 419

OneWire slave interrupt based lib

Hello everybody! I have migrated the library of Youen Neuoy to STM321f103 (Arduino). You have got the advantage, that the polling does not bloc your micro, since the onewire communication is interrupt based. The attached example simulates the DHT22 sensor Some timing constants have to be adjusted, i...