Search found 205 matches

by Ritesh
Fri Apr 28, 2017 1:58 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

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.
by Ritesh
Fri Apr 28, 2017 1:04 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

TFT drawing and text/fonts library ( tft.c , tft.h ) is now added to the https://github.com/loboris/ESP32_SPI_MASTER_NODMA_EXAMPLE My full library includes also image functions (raw image, BMP & JPG), but they requires file system and are not included in this example. https://raw.githubusercont...
by Ritesh
Thu Apr 27, 2017 5:20 pm
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

Hi,

If possible then provide me sample examples to draw some fonts over LCD using your current No DMA SPI Interface driver. Then, I will create whole GUI according to project requirement.
by Ritesh
Thu Apr 27, 2017 5:08 pm
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

To clear the screen you have to send 320*480*3*8 = 3686400 bits to the display. At 40 MHz spi clock (1 bit time is 25 ns) the theoretical minimum time is 92.16 ms. With some optimization I've got 160 ms for clear screen function, I don't think you can get much faster clear screen with any driver on...
by Ritesh
Thu Apr 27, 2017 8:11 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

@Ritesh I have tested ILI9488 based display ( http://www.buydisplay.com/default/lcd-3-5-inch-320x480-tft-display-module-optl-touch-screen-w-breakout-board ) with ESP32 (SparkFun ESP32 Thing) and it is working with my non-dma spi driver. GitHub repository is updated with fully working example for IL...
by Ritesh
Wed Apr 26, 2017 1:58 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

I've had ILI9488 working on STM32F4. Still no time to check it on ESP32. Basically, all you have to do is make shure the initialization sequence is correct (always include soft reset (0x01) as the first command + delay 100 ms) and replace in every function which sends 16-bit color (RGB565) with 3-b...
by Ritesh
Tue Apr 25, 2017 5:07 pm
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

Hi loboris, I have checked your SPI non DMA source code into ILI9488 LCD into ESP32 but not got any success yet. We just observed initial some colored lines over LCD while LCD was going to initialize. But, After that there is no any effect over LCD. I have checked using SPI Master example and effect...
by Ritesh
Tue Apr 25, 2017 10:26 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

Have you checked ILI9488 based LCD using SPI Master Example? Let me know once you check and get success into it. I'm working on it, but I don't have much free time at the moment. Apart from different init sequence, ILI9488 require 3 byte per color pixel... You can look at some Arduino library and t...
by Ritesh
Mon Apr 24, 2017 12:52 am
Forum: ESP32 SDK
Topic: Need sample code for ILI9488 LCD on SPI Interface
Replies: 25
Views: 398

Re: Need sample code for ILI9488 LCD on SPI Interface

Have you checked ILI9488 based LCD using SPI Master Example? Let me know once you check and get success into it. I'm working on it, but I don't have much free time at the moment. Apart from different init sequence, ILI9488 require 3 byte per color pixel... You can look at some Arduino library and t...
by Ritesh
Sat Apr 22, 2017 11:17 am
Forum: ESP32 SDK
Topic: Need Help for HSPI Interface Support
Replies: 0
Views: 51

Need Help for HSPI Interface Support

Hi,

I have started to work on HSPI Interface into master mode and want to know following details first.

    what is the maximum clock i can set for HSPI into master mode?
    what should be SPI Mode I need to select while configuring HSPI Device?

Let me know if anyone has any informations for above

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