Thanks for your reply. I found that using dedicated interrupt IO indeed makes the fixed part of the delay somewhat shorter, but the 1 us-wide 'jitter' remained the same. I also found that the 'jitter range' was equal to the resolution: rmt_config_t.clk_div = 80; // -> 1 us resolution -> 1 us 'jitter...

I implemented a programmable 'one-shot circuit' using RMT; a rising edge on an input GPIO pin starts a programmable delay (range from 5 us to at least 30 ms), after which an output GPIO is set high for a programmable duration (similar range). The only problem is a 1 us – wide 'jitter' on the produce...

I also have this very same problem; no "Preprocessor Include Paths" property page. Why is this still an issue 5 years after mkseven32 posted this question? I installed and tried the Windows installers for Espressif-IDE 2.8.1, Espressif-IDE 2.9.1 and the online installer "esp-idf-tools-setup-online-2...

Hi ESP-Sprite, I see this thread is pretty old now, but still, you wrote: just to set expectations: don't assume you'll get an 120MHz GPIO waveform when you re-write that in assembly. On the ESP32, GPIO is routed via the APB bus and it will take the hardware multiple APB cycles to set/clear a GPIO b...

I need the ESP32 to provide data over SPI to a 12-bit DAC (AD5452) at a rate of at least 800 ksps, this equals an update every 1.25 us. The thing with DACs however (at least the AD5452 and the MCP48XX family) is that they require the CS to briefly (30 ns) go high after every 16 bit sent. This acts a...

Hi AutogolazzoJr
Did you ever figure out how to use DMA to MCP4922 SPI DAC and pulsing the CS of the DAC every 2 bytes?
I'm having the same issue now with an MCP4823 which is from the same DAC family. Thanks.