DroneOverLord
Member

Upon further reading the 1.8v and 3.3v pin is set based on the voltage supplied to NVCC_GPIO pins. According to the Teensy 4.1 schematic those pins are wired to 3.3v. So that's not software programable. The e-fuses...

Yes, USB serial is what I'm using to debug. That and system tic are the only things I could think that would be running. BUT again, I don't know if there is documentation other than the source code for how the Teensy...

After reading, re-reading the ref manual I've come to the conclusion the problem has to be with the Teensy interrupts. My while(data_valid) loop needs 12 usec to execute uninterrupted, does anyone know how often the...

I tried pinMode(DATA_VALID, INPUT) and digitalReadFast(DATA_VALID). You can see that in my first post. It's not acting as it should (hanging in the while(!DATA_VALID) even though the pin is toggling). I'm trying to...

My bad. It defined as: #define IMXRT_GPIO7_DIRECT (*(volatile uint32_t *)0x42004000) #define DATA_VALID_PIN (IMXRT_GPIO7_DIRECT & 0b00000000000000000000100000000000) //Direct read of Data Valid pin Combing...

KurtE, yea it's a bit pricey but has great image quality. It's not configurable to 4-bit transfers but could do 8bits. I have it wired for 16-bit data on GPIO6_AD_B1_00-15 so I can do a quick DR. The problem I'm having...

Thanks for the reply. Yes, I've read that thread and code, that's what gave me the idea but the OV7670 is slower. I'm wondering what the fastest input speed anyone has reliable captured and is there anything more...