Search found 214 matches

by Ritesh
Sat Apr 29, 2017 1:28 pm
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 29
Views: 519

Re: Need sample code for ILI9488 LCD on SPI Interface

Hi Loboris, We have checked your updated repository with all 4 images which you have provided with source code. It works fine but we have one concern regarding image display functionality as we have seen some while dots on the image while it is displaying on ILI LCD9488. So, Have you observer this t...
by Ritesh
Sat Apr 29, 2017 1:18 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 29
Views: 519

Re: Need sample code for ILI9488 LCD on SPI Interface

⋅ JPG image decoding and drawing on screen is now added. In example the image is drawn from embeded buffer (4 images included), but drawing from file is also supported. I will also include the BMP image support. ⋅ You can print any text on any x,y location on the screen as demon...
by Ritesh
Sat Apr 29, 2017 1:06 am
Forum: ESP32 SDK
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 11
Views: 81

Re: GPIO gives Multiple Interrupt events for single interrupt generation

You could do a quick check directly in the ISR if the last event has been too recent, and ignore the new interrrupt in this case. Yes. But that is work around solution that I have already thought to do it as I have did it into other controller as well before. But, I just want to find out why it is ...
by Ritesh
Fri Apr 28, 2017 4:48 pm
Forum: ESP32 SDK
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 11
Views: 81

Re: GPIO gives Multiple Interrupt events for single interrupt generation

I'm not much of a HW guy, but my guess would be the speed. Maybe there is a bounce, but for the Due it's so fast it's negligible. The ESP32 may "sample" a bit faster, so it gets more sensitive to that. I'm just basing this on the clock speed. But the oscilloscope will show everything thou...
by Ritesh
Fri Apr 28, 2017 4:02 pm
Forum: ESP32 SDK
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 11
Views: 81

Re: GPIO gives Multiple Interrupt events for single interrupt generation

We checked into Arduino DUE board Switches always have bounces, so don't rely on the fact that you were not able to reproduce the issue on DUE. Check with an oscilloscope like shown on the article mentioned above. Ok. We will check using CRO. But my concern is that we have used same mechanism like ...
by Ritesh
Fri Apr 28, 2017 2:11 pm
Forum: ESP32 SDK
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 11
Views: 81

Re: GPIO gives Multiple Interrupt events for single interrupt generation

WiFive wrote:https://www.allaboutcircuits.com/technical-articles/switch-bounce-how-to-deal-with-it/


We checked into Arduino DUE board in which it is working fine without any issue so it means no any issue of Switch Bounce or De-Bounce issue.
by Ritesh
Fri Apr 28, 2017 2:08 pm
Forum: ESP32 SDK
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 11
Views: 81

Re: GPIO gives Multiple Interrupt events for single interrupt generation

sintech wrote:Contact bounce maybe?


No, There is no any issue of contact Debounce as we have verified it into Arduino DUE board in which it is working fine without any issue after setting Negative or Positive Edge Trigger.
by Ritesh
Fri Apr 28, 2017 2:07 pm
Forum: ESP32 SDK
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 11
Views: 81

Re: GPIO gives Multiple Interrupt events for single interrupt generation

Hi, I and Rahul are working together for this stuffs and we have used same gpio_test.c file from examples/periphirals/gpio section. So, We have simply tested GPIO0 button which is on ESP32 Development Kit and have verified that we are getting multiple ISR calls with GPIO Level 0 and 1 for single pre...
by Ritesh
Fri Apr 28, 2017 1:05 pm
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 29
Views: 519

Re: Need sample code for ILI9488 LCD on SPI Interface

Hi Loboris, We have successfully ported your updated SPI No DMA example on ESP32 Development Kit without any issue. Right now, We are focusing to enhance your base code as per our requirement. So, I have following queries or requirements to expand your base project. 1) To draw whole image or image d...
by Ritesh
Fri Apr 28, 2017 1:58 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 29
Views: 519

Re: Need sample code for ILI9488 LCD on SPI Interface

Hi Loboris,

Are you trying to display image file on LCD in you no DMA SPI Master driver?

For that you need SPIFFS file system or other file system support for ESP32.

Let me know if you have any plan for that.

Go to advanced search