Search found 7 matches

by awesome101
Sun Aug 06, 2017 3:28 pm
Forum: General Discussion
Topic: Custom Bootloader
Replies: 1
Views: 4913

Custom Bootloader

Hi everyone. I'm new to the ESP32 and have a question about another game system I am creating. 4MB of flash is plenty for me, but I want to know if I can switch games via an sd card. So the sd card holds HEX files and then the ESP32 rerwites these hex files to the program flash so games can be switc...
by awesome101
Tue Jun 13, 2017 11:15 pm
Forum: General Discussion
Topic: ESP 32 SPI DMA Questions
Replies: 13
Views: 24599

Re: ESP 32 SPI DMA Questions

Is 40 ms good for gaming
by awesome101
Sat Jun 10, 2017 1:48 pm
Forum: General Discussion
Topic: ESP 32 SPI DMA Questions
Replies: 13
Views: 24599

Re: ESP 32 SPI DMA Questions

I read a topic in the PJRC forum where the Teensy 3.5 was able to do a 50HZ refresh rate. Is this also possible with the ESP32?
by awesome101
Fri Jun 09, 2017 6:37 pm
Forum: General Discussion
Topic: ESP 32 SPI DMA Questions
Replies: 13
Views: 24599

Re: ESP 32 SPI DMA Questions

I'm not sure how you calculated 1.8 GHZ? The Teensy 3.5, which is less capable than the ESP32, can refresh the screen at a rate of at least 50 HZ via DMA. It takes the Teensy 1165 microseconds to fill the screen fully. Is this also possible with the ESP32?
by awesome101
Fri Jun 09, 2017 6:36 pm
Forum: General Discussion
Topic: ESP 32 SPI DMA Questions
Replies: 13
Views: 24599

Re: ESP 32 SPI DMA Questions

I'm not sure how you calculated 1.8 GHZ? The Teensy 3.5, which is less capable than the ESP32, can refresh the screen at a rate of at least 50 HZ via DMA. It takes the Teensy 1165 microseconds to fill the screen fully. Is this also possible with the ESP32?
by awesome101
Fri Jun 09, 2017 12:57 pm
Forum: General Discussion
Topic: ESP 32 SPI DMA Questions
Replies: 13
Views: 24599

Re: ESP 32 SPI DMA Questions

Not sure how you calculated 1.8GHZ? The Teensy 3.5 which is less capable than the ESP32 is able to fill the screen in 1165 microseconds using a DMA buffer (https://forum.pjrc.com/threads/36706-IL ... y-3-6-only). The ESP32 is not capable of doing this?
by awesome101
Thu Jun 08, 2017 10:30 pm
Forum: General Discussion
Topic: ESP 32 SPI DMA Questions
Replies: 13
Views: 24599

ESP 32 SPI DMA Questions

So before I buy the ESP 32 I just want to confirm that I can use my ESP32 to interface with my ILI9341 LCD via SPI using a pixel data buffer transmitted to the SPI FIFO register by DMA. Is this possible with the ESP32? I need this for a gaming library by the way so I need the display to update quick...