Hello, Is there any technical reason why esp-idf v4.0 and release/v4.1 are still using std=gnu99 over newer versions of the language (such as gnu11)? The following preprocessor-time error triggers on std=gnu99: #define STR(x) #x #define _STR(x) STR(x) #if __STDC_VERSION__ >= 201112L /* C11-compliant...

As already referenced by this issue : I cloned openocd-esp32 from github yesterday and the following error appeared when running ./bootstrap: $ ./bootstrap + aclocal + libtoolize --automake --copy + autoconf configure.ac:12: error: possibly undefined macro: AC_MSG_WARN If this token and others are l...

I am sorry for reviving such an old topic, but I wanted to bring some news on this area. Finally I got one of these units and debugging is now as responsive as one could expect. I used the esp32_devkitj_v1.cfg script included on the openocd fork by Espressif, but had to make a couple of slight modif...

Hello, I am considering a 3.5" TFT ILI9481-based (480x320 pixels, 16 bpp) display with an ESP32-WROOM-32, and I am aiming for display moving pictures with no tearing at all. According to the ILI9481 datasheet, frame rate can be adjusted via the "Frame Rate and Inversion Control" command (ID C5h) as ...

As shown below, a complete screen takes ~38 ms, but the tearing effect signal (see D4) asserts every 24 ms. 480 x 320 x 2bpp = 307200 bytes are being sent there, so this approaches to ~8 Mbytes per second. However, is there any way to make I2S1 transfer shorter than 24 ms? https://i.postimg.cc/Y9RWM...

I don't see anything particularly sketchy in your code, but you are aware that the I2S peripheral shifts out the bytes in a weird way? If I recall correctly, a word like 0x12345678 would be sent as 0x34, 0x12, 0x78, 0x56. You probably need to shift your DMA data in a similar way. I can confirm such...

I'm pretty much having the same issues you have described as well. I am using a ILI9481-based (480x320 pixels) display along with I2S+DMA. I have played around with the APLL_CLK with no success so far, so I am sticking with the default clock source for the time being. Even if the screen seems to get...

Hi Sprite, Sorry for the delayed answer. I did some more tests and got to send buffer as expected, as shown at the image below (I am filling a buffer with 0xFFFF and 0x0000): https://i.postimg.cc/KznfqT5q/Screenshot-20190530-185304.png However, if I control I2S1.conf.tx_start manually (setting it be...

Hi there, For some weeks now I have trying to interact with a ILI9481-based TFT screen with no much success so far. My intention is to use one of the available I2S peripherals to send the following signal: https://i.postimg.cc/MKfYyLfq/ideal-WR.png Since the LCD uses 16bpp format, 2 WR clocks per pi...

Mate, your job looks absolutely amazing. Where can I get this tool from?