Search found 63 matches

by wevets
Wed Dec 04, 2019 5:48 am
Forum: ESP32 IDF
Topic: Suppress Boot messages
Replies: 8
Views: 3884

Re: Suppress Boot messages

I had the same problem, the need to suppress boot messages to the terminal. I've found the complete solution. It consists of 3 steps. 1. As mentioned in earlier posts (> 2.5 years ago), strap GPIO15 to ground. In "make menuconfig" 2. Bootloader config -> Bootloader log verbosity -> (no output) 3. Co...
by wevets
Tue Nov 19, 2019 7:01 am
Forum: ESP32 IDF
Topic: Quick question on Newlib
Replies: 0
Views: 321

Quick question on Newlib

When calling a function such as strncmp() from Newlib, how much of Newlib is linked into an executable? Is just the function and any necessary supporting code pulled in, or is all or a large chunk pulled in also. If much extraneous unused stuff is linked in, I'll write my one functions in that categ...
by wevets
Tue Nov 12, 2019 12:38 am
Forum: ESP32 IDF
Topic: Question about the WR_REG ULP instruction
Replies: 4
Views: 218

Re: Question about the WR_REG ULP instruction

Is there any documentation on the ULP assembler other than the instruction set that appears in both "Read The Docs" and the TRF? In particular, I'd like to know what assembler directives the assembler knows about. I was surprised to find that it it took the .macro directive and a few others that I f...
by wevets
Sat Nov 09, 2019 6:18 am
Forum: ESP32 IDF
Topic: Question about the WR_REG ULP instruction
Replies: 4
Views: 218

Re: Question about the WR_REG ULP instruction

OK, sorry for the new post for each question. This is an add on. I did what you suggested, changing the order of the calls, and it worked. I then substituted in the instruction I'd first tried, "reg_wr 0x006, 24, 24, 0", at the new location, and it worked too. Thanks. Another question: The code I'm ...
by wevets
Thu Nov 07, 2019 7:59 am
Forum: ESP32 IDF
Topic: Question about the WR_REG ULP instruction
Replies: 4
Views: 218

Question about the WR_REG ULP instruction

I would like to be able stop the ULP timer from within a ULP program just before I wake the system so as to prevent the ULP from running until I want to again start the ULP and go into deep sleep again. I asked about this before and you referred me to ulp.c wherein is defined ulp_run(), ulp_load_bin...
by wevets
Sun Nov 03, 2019 3:55 am
Forum: ESP32 IDF
Topic: Qeustions re: the ULP Timer and RTC register manipulation
Replies: 2
Views: 163

Re: Qeustions re: the ULP Timer and RTC register manipulation

Thanks very much for the quick response. I'll check it out.
by wevets
Sat Nov 02, 2019 9:58 pm
Forum: ESP32 IDF
Topic: Qeustions re: the ULP Timer and RTC register manipulation
Replies: 2
Views: 163

Qeustions re: the ULP Timer and RTC register manipulation

I can’t figure out how to set a bit, specifically, RTC_CNTL_ULP_CP_SLP_TIMER_EN in the RTC_CNTL_STATE0_REG at 0x3FF48018 (page 645 of the TRM) What I want to do is to clear this bit from the ULP when waking the system and halting the ULP so the ULP doesn’t restart when the system is awake. I can do ...
by wevets
Thu Oct 24, 2019 2:52 am
Forum: Documentation
Topic: Problem with on-line documentation
Replies: 2
Views: 1154

Re: Problem with on-line documentation

It doesn't happen on every page, probably not on most pages, but I did find it here on a link DuckDuckGo gave me when I searched for "esp-idf deep sleep":

https://gitdemo.readthedocs.io/en/lates ... sleep.html

I've seen it on other read-the-docs pages as well.
by wevets
Thu Oct 24, 2019 2:44 am
Forum: ESP32 IDF
Topic: Question on wake by ULP from deep sleep
Replies: 2
Views: 155

Re: Question on wake by ULP from deep sleep

Thanks for the quick reply. It'll save me some time.
by wevets
Wed Oct 23, 2019 11:41 pm
Forum: ESP32 IDF
Topic: Question on wake by ULP from deep sleep
Replies: 2
Views: 155

Question on wake by ULP from deep sleep

I've rooted around in sleep_modes.c and other places, and it looks like a system wake from ULP causes an unconditional reset of the system, with control always and only going through app_main (with no memory surviving except RTC memory and NVS memory. Is this correct? Is there another way to wake fr...

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