I'm working on an application in which I need to squeeze out the most battery life I can. I'm already running the SOC clock at 40 MHz as selected in "make menuconfig" when I have to have the SOC running, but expect to be on the ULP either actively or sleeping most of the time. In reading the ESP32 t...

Thank you for staying with me through this process. I have things working now. Yeah, there was a two-character error in my path statement that kept the UPL tools from being seen, just as you said. And thanks for your answers to my questions.

wevets

At the end of my last post, I speculated that the ULP make system in esp-idf v3.3 wasn't working, although I always keep in mind that it might be something I missed or am doing wrong. I did some grepping and guessing based on the error and abort messages I was seeing when I tried to build a sample U...

Thank you for the correction. I wondered about the two zip files, but missed that one included 's2' in the title while the other didn't. I downloaded and installed the correct file... and got exactly the same result. As you suggested, I checked where I add the path to the ULP tool set, and I've got ...

Please read my full post. I explain that I've done all that you suggest already. I'm using v2.28.51-esp32ulp-20180809. Interestingly, the instructions on setting up the ULP in the "read the docs" for v3.3 stable (https://docs.espressif.com/projects/esp-idf/en/v3.3/api-guides/ulp.html) say to downloa...

Hi, I’ve been trying to get a ULP project running for a while and have failed to get a build to get past the ULP assemply step. So I cloned one of the examples on github, at https://github.com/krzychb/ulp-loop. This sample does not require any external hardware so I thought it would be the ideal sam...

Fixed! More or less. I've found that if I press the boot button during the entire flash process, this board accepts a flash. A pain, but not fatal. My other DevKetC's don't require this treatment.

I don't believe so. PuTTY conflicts with COM3 access by the boot loader. That is, if PuTTY is running, the boot loader can't see the DevKitC, and vice versa. When PuTTY is running, I can get the board to reset and restart it's internal program, the one that scans SSDs. It resets like this when I hit...

I have been running code on a ESP32 (Rev 1) DevKitC for a while that I had been given by someone else who had also been developing code on it. Flash, test, flash test.... the usual cycle. I bought a new DevKitC from Amazon which, when I pluged in, powered up and monitored through COM3, reports scann...

I'm having a lot of trouble figuring out how to do what I want to do, which is bit-banging a clock out and data in to read an external device through GPIOs. This was fairly easy to get working on the CPU(s), but I also need to be able to do this from the ULP. Then, on meeting a trigger condition ba...