Search found 62 matches

by Hans Dorn
Mon Jul 24, 2017 12:07 am
Forum: General Discussion
Topic: Looking for a ready made board with revision 1 silicon
Replies: 5
Views: 3102

Re: Looking for a ready made board with revision 1 silicon

Thx.

The only one that explicitly mentions rev.1 seems to be the wrover board.
Sadly, this doesn't fit my project very well, I plan on using a touch screen display.

Cheers
Hans
by Hans Dorn
Fri Jul 21, 2017 4:53 pm
Forum: General Discussion
Topic: Looking for a ready made board with revision 1 silicon
Replies: 5
Views: 3102

Looking for a ready made board with revision 1 silicon

Hi all

I'm wondering if there's any breadboard compatible rev.1 ("new silicon") dev boards out in the wild right now.
If there is, I'd be happy to know a source.


Cheers
Hans
by Hans Dorn
Fri Apr 28, 2017 5:37 pm
Forum: ESP32 IDF
Topic: GPIO gives Multiple Interrupt events for single interrupt generation
Replies: 17
Views: 8439

Re: GPIO gives Multiple Interrupt events for single interrupt generation

You could do a quick check directly in the ISR if the last event has been too recent, and ignore the new interrrupt in this case.
by Hans Dorn
Fri Apr 28, 2017 5:29 pm
Forum: General Discussion
Topic: Urgent Need for Pulse Width Measurement, Register/Hardware Descriptions Would Work
Replies: 13
Views: 7372

Re: Urgent Need for Pulse Width Measurement, Register/Hardware Descriptions Would Work

Hi Jesse,

what resolution do you need for your pulse width measurement?
by Hans Dorn
Thu Apr 20, 2017 10:35 pm
Forum: ESP32 IDF
Topic: GPIO conflicts with I2S interrupt
Replies: 4
Views: 2699

Re: GPIO conflicts with I2S interrupt

You sent the address of gpio_num instead of it's value to the event queue.

I'm pretty sure that's not what you wanted ;)
by Hans Dorn
Mon Apr 17, 2017 11:03 pm
Forum: ESP32 Arduino
Topic: Can't get ESP32 WROOM to work with any example
Replies: 20
Views: 14240

Re: Can't get ESP32 WROOM to work with any example

Have you tried setting the upload baud rate to 115200?
by Hans Dorn
Thu Apr 06, 2017 10:29 pm
Forum: Report Bugs
Topic: I2C SCL frequency 10% less than it should be at 400kHz
Replies: 54
Views: 23702

Re: I2C SCL frequency 10% less than it should be at 400kHz

Things are slowly starting to improve in the I2C department. While trying to figure out how to make long (>32 bytes) transfers work, I found there's a nicer way to send long frames. I2_CMD_WRITE will actually take a byte_num paramater larger than 32 in FIFO mode. All you have to do is keep the FIFO ...
by Hans Dorn
Wed Apr 05, 2017 1:25 am
Forum: General Discussion
Topic: ESP32 - GPIO speed lower than expected
Replies: 6
Views: 78754

Re: ESP32 - GPIO speed lower than expected

Hi Alizame, as far as I understand the w1ts/w1tc registers, you don't have to read them out to set/reset GPIO bits. Try this version: void toggle(void *pvParameter) { printf("toggle called.\n"); portDISABLE_INTERRUPTS(); while (1) { GPIO.out_w1ts = (1 << GPIO_NUM_23); __asm__ __volatile__("nop;nop;n...
by Hans Dorn
Wed Apr 05, 2017 1:04 am
Forum: Report Bugs
Topic: I2C SCL frequency 10% less than it should be at 400kHz
Replies: 54
Views: 23702

Re: I2C SCL frequency 10% less than it should be at 400kHz

I'll try to update my arduino installation over the weekend. Guess I'm already up to date w.r.t the I2C part right now though. My changes didn't make the error rate any worse or better, I'm back at the fast version. There might be some EMI issues with my setup. The wiring is rather messy and spans 2...

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