Search found 1660 matches

by ESP_igrr
Wed May 06, 2020 6:12 am
Forum: General Discussion
Topic: Esp32 Task concurrent problems
Replies: 2
Views: 553

Re: Esp32 Task concurrent problems

1.when two task running by each core calling uart_write_bytes() at the same time,will it cause data disorder or loss? Is uart_write_bytes() task/thread safe? uart_write_bytes is thread safe, but however if you see any issue with it you could also wrap the call to this function in a mutex. 2. A whil...
by ESP_igrr
Tue May 05, 2020 9:38 pm
Forum: General Discussion
Topic: undocumented UART Hardware problem?
Replies: 7
Views: 1533

Re: undocumented UART Hardware problem?

Hi kbaud1, Which address does "UART [1]" refer to in your code? Is it in 0x3ffxxxxx range or in 0x600xxxxx range? The errata document is being updated to explain this behavior, but the short version is that you need to: * Use dport address of the FIFO (i.e. in 0x3ffxxxxx range) for reads, making sur...
by ESP_igrr
Tue May 05, 2020 9:32 pm
Forum: ESP32 IDF
Topic: What ISR is called upon packet receive over WiFi?
Replies: 1
Views: 375

Re: What ISR is called upon packet receive over WiFi?

Hi ille111, The packet handling is done inside the Wi-Fi driver, and the Wi-Fi interrupt handler is also part of it. Conceptually the flow is very similar to that in the other peripherals: an interrupt handler sends an element to a FreeRTOS queue, which wakes up a high-priority Wi-Fi task. That task...
by ESP_igrr
Tue May 05, 2020 9:27 pm
Forum: ESP32 IDF
Topic: ESP IDF 3.3 with "old" modules, new production run uses v3 modules - updates and compatibility
Replies: 1
Views: 365

Re: ESP IDF 3.3 with "old" modules, new production run uses v3 modules - updates and compatibility

Hi jcsbanks, If your design doesn't use the 32kHz XTAL, you can upgrade the module without making any changes to the SDK or the application. If you are using the 32kHz XTAL, there is a different recommended circuit for the ECO3 chips, explained in the hardware design guidelines. No SDK update Is req...
by ESP_igrr
Tue May 05, 2020 9:22 pm
Forum: ESP32 IDF
Topic: How to get the total and current stack use for tasks
Replies: 2
Views: 471

Re: How to get the total and current stack use for tasks

Hi Leherenn,

The first member of TaskSnapshot_t structure, pxTCB, has the same meaning as the first member of TaskStatus_t, xHandle — both are task handles, or pointers to the task control block. You can use this field to match between TaskSnapshot_t and TaskStatus_t lists.
by ESP_igrr
Tue May 05, 2020 9:16 pm
Forum: Report Bugs
Topic: Is this still a security bug? "Pwn the ESP32 Forever: Flash Encryption and Sec. Boot Keys Extraction"
Replies: 6
Views: 1315

Re: Is this still a security bug? "Pwn the ESP32 Forever: Flash Encryption and Sec. Boot Keys Extraction"

Hi Munque, Yes, please check the article about the fault injection vulnerabilities on Espressif website: https://www.espressif.com/en/news/ESP32_FIA_Analysis, the original security advisory: https://www.espressif.com/en/news/Security_Advisory_Concerning_Fault_Injection_and_eFuse_Protections, and the...
by ESP_igrr
Thu Apr 23, 2020 8:36 am
Forum: General Discussion
Topic: Multiple definition of functions when trying to use regex
Replies: 11
Views: 1915

Re: Multiple definition of functions when trying to use regex

No need, already have an issue logged for this. Will give you feedback once this is resolved.
by ESP_igrr
Wed Apr 22, 2020 10:35 pm
Forum: ESP32 IDF
Topic: ESP-NOW specifics [WIFI-2245]
Replies: 18
Views: 3451

Re: ESP-NOW specifics

The protocol should be compatible between the ESP8266 and ESP32, so perhaps there is some issue with adding peers or setting up encryption... Do you have a wireless adapter in your PC/laptop which you can switch to monitor mode, and capture the packets with Wireshark? Once you have a packet capture,...
by ESP_igrr
Wed Apr 22, 2020 3:26 pm
Forum: General Discussion
Topic: Multiple definition of functions when trying to use regex
Replies: 11
Views: 1915

Re: Multiple definition of functions when trying to use regex

Tracking this internally as IDFGH-3153.
by ESP_igrr
Wed Apr 22, 2020 1:46 pm
Forum: ESP32 IDF
Topic: ESP-NOW specifics [WIFI-2245]
Replies: 18
Views: 3451

Re: ESP-NOW specifics

Hi daneast, ESP-NOW uses a standard Wi-Fi feature called vendor-specific action frames (which is a type of management frames). Since this is part of Wi-Fi protocol, arbitration with other packets at the physical layer is handled the same way as for other Wi-Fi packets. Management frames have a Frame...

Go to advanced search