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Topics - Farid

Pages: [1]
Discussion - Software / FT813 how to update a portion of a display
« on: April 18, 2018, 06:31:39 PM »
Can anyone tell me how to update only a portion of an LCD display. In my case, I need to display a numeric value on the main display once a user touches a certain button.

Now I am just transmitting the entire display content every 200 ms(which I dont think is efficient)

Thank you!

Discussion - Software / Loading an image with FT813 issues
« on: April 18, 2018, 06:21:54 PM »
I am trying to load a JPEG image using the function below. if I call this function in my code, my whole program stops working, can anyone tells me what I am doing wrong here?


void cmd_loadimage(uint8_t img[], uint32_t ptr, uint32_t length, uint32_t opt)
   uint32_t i;

   ft800memWrite32(RAM_CMD + cmdOffset, CMD_LOADIMAGE);
   cmdOffset = incCMDOffset(cmdOffset, 4);
   ft800memWrite32(RAM_CMD + cmdOffset, ptr);
   cmdOffset = incCMDOffset(cmdOffset, 4);
   ft800memWrite32(RAM_CMD + cmdOffset, opt);
   cmdOffset = incCMDOffset(cmdOffset, 4);
   for (i = 0; i < length; i++)
     ft800memWrite8(RAM_CMD + cmdOffset, img);   


Pages: [1]