Search found 1413 matches

by ESP_igrr
Fri Mar 22, 2019 7:16 am
Forum: Hardware
Topic: ESP32-WROOM-32D interface with host controller
Replies: 2
Views: 74

Re: ESP32-WROOM-32D interface with host controller

Yes, please check https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/sdio_slave.html. Pins are 2,4,12-15, voltage level is 3.3V. Also make sure to understand https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/sd_pullup_requirements.html befor...
by ESP_igrr
Fri Mar 22, 2019 4:54 am
Forum: Hardware
Topic: Timer Interrupt cannot Run Faster than 100Hz?
Replies: 1
Views: 48

Re: Timer Interrupt cannot Run Faster than 100Hz?

xSemaphoreGiveFromISR can take the 2nd argument, which will return a flag you can check and trigger portYIELD_FROM_ISR(); This will tell FreeRTOS that a higher priority task might have been unblocked as a result of the xSemaphoreGiveFromISR call, and that you want to switch to it without waiting for...
by ESP_igrr
Thu Mar 21, 2019 3:22 pm
Forum: ESP32 IDF
Topic: What download speeds are available on WiFi?
Replies: 3
Views: 101

Re: What download speeds are available on WiFi?

You can expect to get around 20Mbit/s for TCP, provided that you can process the received data fast enough: https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/wifi.html#esp32-wi-fi-throughput If you are saving the file to a filesystem on the ESP32, then the download speed will likely b...
by ESP_igrr
Thu Mar 21, 2019 3:13 pm
Forum: Hardware
Topic: JLink + openocd for ESP32WROOM not working
Replies: 6
Views: 262

Re: JLink + openocd for ESP32WROOM not working

This error: Error: No symbols for FreeRTOS indicates that the ELF file hasn't been loaded into GDB prior to 'target remote :3333'. Did you switch the order of arguments when running GDB? I'm not sure about "Warn : negative reply, retrying" though... Would you be able to add "-d 3" flag to OpenOCD co...
by ESP_igrr
Thu Mar 21, 2019 12:53 pm
Forum: ESP-IDF 中文讨论版
Topic: 基于idf的应用层代码,怎么做软件单元测试?
Replies: 5
Views: 296

Re: 基于idf的应用层代码,怎么做软件单元测试?

Sorry, we don't have any out of the box support for this, yet. You can look into tools such as CMock for this purpose. If you use the new CMake build system in IDF, it should be easy to integrate a call to CMock into your CMakeLists.
by ESP_igrr
Thu Mar 21, 2019 12:26 pm
Forum: ESP32 Arduino
Topic: C++ Standard Template Library with ESP32?
Replies: 2
Views: 92

Re: C++ Standard Template Library with ESP32?

(assuming the question is about ESP32 Arduino)
You should be able to use STL containers: #include <deque>, then use std::deque.
by ESP_igrr
Thu Mar 21, 2019 12:13 pm
Forum: ESP-IDF 中文讨论版
Topic: IDF中的CONSOLE组件内存泄漏
Replies: 1
Views: 279

Re: IDF中的CONSOLE组件内存泄漏

This is due to the way console history feature works. When new command is typed, and the command is not the same as the previous command, it is added to history. If it is the same as the previous command, it is not added to history. Adding a command to history requires allocating memory for the comm...
by ESP_igrr
Thu Mar 21, 2019 1:41 am
Forum: ESP32 IDF
Topic: Unit Testing includepath
Replies: 2
Views: 74

Re: Unit Testing includepath

You can specify include directories exported by the main component by setting COMPONENT_ADD_INCLUDEDIRS variable to the list of directories to include. By default, COMPONENT_ADD_INCLUDEDIRS is set to "include", so if you put the header files into "include" subdirectory of the component, they will be...
by ESP_igrr
Wed Mar 20, 2019 1:55 am
Forum: General Discussion
Topic: Super slow sdcard on Wrover kit
Replies: 2
Views: 124

Re: Super slow sdcard on Wrover kit

Could you please describe the failure in any detail, for example by posting the console output? With regards to write speed: please keep in mind that FILEs are buffered by default, and BUFSIZE is 128 bytes. This means that in your attached code, for every 128 fprintf calls, there will be 1 write ope...

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