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by ESP_Angus
Mon Aug 19, 2019 5:49 am
Forum: General Discussion
Topic: undefined reference to `esp_aes_init'
Replies: 6
Views: 151

Re: undefined reference to `esp_aes_init'

Hi permal,

Thanks for those details.

I forgot that your project is a CMake project that integrates IDF as an external library. My guess is that this is why something is not building properly.

Is there a branch of your project that I can check out to reproduce this error?

Angus
by ESP_Angus
Mon Aug 19, 2019 5:46 am
Forum: ESP32 IDF
Topic: Esp-idf v4.0
Replies: 7
Views: 248

Re: Esp-idf v4.0

Just wanted to ask a quick question about the new 4.0 branch on the github. Will all further work for 4.0 be done in that branch or will it be put into master and merged into 4.0 once verified? Or would the reverse be the case? We follow a backport process, so any fix which goes into release/v4.0 b...
by ESP_Angus
Mon Aug 19, 2019 12:20 am
Forum: ESP32 IDF
Topic: undefined reference to `swap_byte_32'
Replies: 3
Views: 117

Re: undefined reference to `swap_byte_32'

Thanks redengin.

A member of our BT team was able to reproduce this as well, and a fix should be merged to master shortly.

As a workaround the error may go away if you switch Compiler Optimisation from Release back to Debug, temporarily.
by ESP_Angus
Mon Aug 19, 2019 12:17 am
Forum: Hardware
Topic: Changing pin state: ISA Question
Replies: 2
Views: 118

Re: Changing pin state: ISA Question

Hi ballsystemlord, As WiFive suggests, it's possible to write a single GPIO register to set output bits (W1TS register) or clear outputs (W1TC register). The first 32 GPIOs can be independently set/cleared in a single write to GPIO_OUT_W1TS_REG / GPIO_OUT_W1TC_REG. GPIOS 32-39 can be set/cleared by ...
by ESP_Angus
Mon Aug 19, 2019 12:11 am
Forum: General Discussion
Topic: undefined reference to `esp_aes_init'
Replies: 6
Views: 151

Re: undefined reference to `esp_aes_init'

Hi Permal,

Exactly which version of IDF do you have ("get describe --tags")? Could you please post the full output from a CMake run? (Either running CMake directly or running "idf.py reconfigure" in your project.)
by ESP_Angus
Mon Aug 19, 2019 12:08 am
Forum: General Discussion
Topic: Generic questions about secure boot & flash enc
Replies: 27
Views: 3167

Re: Generic questions about secure boot & flash enc

With pre-generated key and protected FLASH_CRYPT_CNT (in odd), esp32 will accept only crypted binaries, then, why Espressif tells to enable secure boot? What is the insecure that option returns? With _CTN protected, secure boot is really necessary? As WiFive says, it may be possible for an attacker...
by ESP_Angus
Fri Aug 16, 2019 3:05 am
Forum: ESP32 IDF
Topic: ESP2 efuse and the hardware module
Replies: 9
Views: 358

Re: ESP2 efuse and the hardware module

Sorry for delayed reply, WiFive is right. Actually it's not possible to decrypt at all unless flash encryption is on, and when it's on then it's on for all cache accesses (which includes code execution and any read from SPI flash which does not explicitly disable using flash encryption). We recommen...
by ESP_Angus
Fri Aug 16, 2019 2:57 am
Forum: ESP32 IDF
Topic: esp_timer_start_once - LoadProhibited on the second timer_armed call 1 in a million times
Replies: 2
Views: 161

Re: esp_timer_start_once - LoadProhibited on the second timer_armed call 1 in a million times

Hi jcsbanks, Sorry noone got back to you earlier. A LoadProhibitedError with an EXCVADDR of 0x00000000 suggests that a null pointer was dereferenced. The code for timer_armed(), where the crash occurs, is very simple: static IRAM_ATTR bool timer_armed(esp_timer_handle_t timer) { return timer->alarm ...
by ESP_Angus
Fri Aug 16, 2019 2:45 am
Forum: ESP32 IDF
Topic: Getting Target "flash_project_args_target" not found error while enabling secure Boot + Flash encryption
Replies: 6
Views: 361

Re: Getting Target "flash_project_args_target" not found error while enabling secure Boot + Flash encryption

Hi everyone,

Thanks for the extra details. A fix for this has been merged on our internal repo but due to another issue it hasn't been pushed to GitHub master branch yet. Expect it should be available soon, will aim to update this forum thread again when that's the case.
by ESP_Angus
Thu Aug 15, 2019 2:46 am
Forum: Documentation
Topic: ESP32 ISA reference manual
Replies: 4
Views: 336

Re: ESP32 ISA reference manual

I don't think we have any update to what is shown here: https://www.esp32.com/viewtopic.php?t=293#p1544 Which is unfortunate as we would also like for ESP32 users to be able to access this information. If you have specific questions about parts of the ISA then feel free to post them on the forum, we...

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