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by ESP_Angus
Wed Dec 13, 2017 5:44 am
Forum: General Discussion
Topic: Flash encryption effect on ESP32 speed
Replies: 2
Views: 38

Re: Flash encryption effect on ESP32 speed

Hi Vader, Secure Boot adds additional boot time when the app starts from reset, approximately +600ms. This is because the bootloader needs to calculate & verify two ECDHE signatures (partition table and app). We're looking at ways to reduce this overhead. After the app starts, secure boot adds n...
by ESP_Angus
Wed Dec 13, 2017 4:01 am
Forum: Report Bugs
Topic: get nothing running with V3 rc1, not even hello-world
Replies: 6
Views: 64

Re: get nothing running with V3 rc1, not even hello-world

E (51) flash_parts: partition 0 invalid magic number 0x40a9 This error can imply bootloader.bin is too big, and has overwritten the partition table. Although esptool.py should detect this and error out if both were flashed at the same time (ie with "make flash"). Any chance you could plea...
by ESP_Angus
Wed Dec 13, 2017 12:50 am
Forum: General Discussion
Topic: Brown Out Detector Bug/issue
Replies: 4
Views: 92

Re: Brown Out Detector Bug/issue

Thanks for the update and the detailed scope shots, etc. I think this is probably a hardware fault with the DOIT board not integrating enough capacitance on the board. The fact you can see a pulse down to 2.6V on what looks like a fairly slow scope trace makes me think it probably is dipping lower a...
by ESP_Angus
Tue Dec 12, 2017 6:11 am
Forum: General Discussion
Topic: Brown Out Detector Bug/issue
Replies: 4
Views: 92

Re: Brown Out Detector Bug/issue

Hi urbanze, What version of ESP-IDF are you using? There have been some significant changes to the BOD code and levels lately. If it's crashing during WiFi calibration, updating to the latest ESP-IDF may help. There was a bug fixed which caused calibration to use more current than it should. I alrea...
by ESP_Angus
Tue Dec 12, 2017 3:59 am
Forum: General Discussion
Topic: [mirror] is there a faster link for download toolchain?
Replies: 6
Views: 94

Re: [mirror] is there a faster link for download toolchain?

a crazy route from here :) EU - Japan - Australia - HK - USA - HK Wow, I'm happy your packets are coming to see me in Australia but it's quite the long way around! If I traceroute from my server in France, I get approximately 10 hops: $ traceroute dl.espressif.com traceroute to dl.espressif.com (11...
by ESP_Angus
Tue Dec 12, 2017 3:46 am
Forum: ESP32 SDK
Topic: Increasing RTOS Tick Rate, >1000Hz
Replies: 9
Views: 1756

Re: Increasing RTOS Tick Rate, >1000Hz

I'm trying to do something very similar to the original post. I successfully implemented the method posted by ESP_Angus for reading sensor data at high frequency. The issue is that I'm also trying to update an OLED screen concurrently (although at a slower rate), and am getting frequent timeouts on...
by ESP_Angus
Mon Dec 11, 2017 6:25 am
Forum: ESP32 SDK
Topic: Guru Meditation Error: Core 0 panic'ed (LoadStoreError) : a problem of ROM?
Replies: 2
Views: 44

Re: Guru Meditation Error: Core 0 panic'ed (LoadStoreError) : a problem of ROM?

Without more details it's impossible to know what the problem is. Can you please post more context, or the full output when it crashes? If the output contains raw addresses then you can use tools like idf_monitor to decode them to line numbers: http://esp-idf.readthedocs.io/en/latest/get-started/idf...
by ESP_Angus
Mon Dec 11, 2017 5:47 am
Forum: ESP32 HDK
Topic: 26MHz TCXO (not crystal) -- which pin to connect to?
Replies: 9
Views: 995

Re: 26MHz TCXO (not crystal) -- which pin to connect to?

One additional question though: With the ECS-TXO-2520 we have 2.5 ppm from -40C to 80C. Will the RTC and internal oscillators be calibrated against that very stable reference as temperature drifts? Are the PLLs locked to the external oscillator? Or in short: does using a TCXO imply I don't have to ...
by ESP_Angus
Mon Dec 11, 2017 5:41 am
Forum: General Discussion
Topic: How to check if an efuse has been burnt?
Replies: 1
Views: 79

Re: How to check if an efuse has been burnt?

We don't have a generic API for this in ESP-IDF, although there are some for particular functions (like secure boot & flash encryption), but they tend to be at the "is this feature enabled?" level rather than anything about the efuses. "espefuse.py summary" will give you this...
by ESP_Angus
Mon Dec 11, 2017 5:35 am
Forum: General Discussion
Topic: make menuconfig fails with file not recognized: File format not recognized
Replies: 2
Views: 39

Re: make menuconfig fails with file not recognized: File format not recognized

Hi raspberrypisig,

Thanks for the detailed description of the problem.

If you run

Code: Select all

rm $IDF_PATH/tools/kconfig/*.o
and then re-run make menuconfig, what is the output?

Angus

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