Search found 114 matches

by ESP_Dazz
Thu Sep 19, 2019 4:01 pm
Forum: ESP32 IDF
Topic: Timer divider and frequency
Replies: 3
Views: 192

Re: Timer divider and frequency

Does it mean I can have the timer ticking at 40MHz? Yep, just set the divider to 2 Except 0 (obviously), but also 1. Why can it not be 1? Because of the division operation or some other cost involved in prescaling the clock? It's a hardware limitation. A Timer's internal logic operates according to...
by ESP_Dazz
Mon Sep 16, 2019 11:58 am
Forum: General Discussion
Topic: make: *** No rule to make target '//Makefile'. Stop.
Replies: 1
Views: 69

Re: make: *** No rule to make target '//Makefile'. Stop.

Please check if you have properly defined your IOT_SOLUTION_PATH via the following command:

Code: Select all

printenv IOT_SOLUTION_PATH
If not, please set your IOT_SOLUTION_PATH according to the instructions stated here.
by ESP_Dazz
Thu Sep 12, 2019 2:27 pm
Forum: ESP32 Arduino
Topic: Software Timer using xTimerCreate runs 33% slow
Replies: 1
Views: 318

Re: Software Timer using xTimerCreate runs 33% slow

Some points to consider How are you actually measuring the duration of your timer? The timer doesn't start until xTimerStart() returns, and xTimerStart() has a possibility of being blocked if the timer's internal command queue is full. The timer callback could be delayed in running if there is some...
by ESP_Dazz
Thu Sep 12, 2019 1:45 pm
Forum: ESP32 IDF
Topic: Timer divider and frequency
Replies: 3
Views: 192

Re: Timer divider and frequency

An 80MHz APB Clock is fed into the entire Timer Group. Each timer then takes 80MHz APB clock and divides it down via the prescaler to a frequency of their own liking. How much the 80MHz clock is divided down by is determined by the value set in the prescaler (i.e. the Divider). The divider can take ...
by ESP_Dazz
Fri Sep 06, 2019 12:30 pm
Forum: General Discussion
Topic: RTOS running on one core only
Replies: 32
Views: 3460

Re: RTOS running on one core only

Ok I have also have an issue where my esp32 from DO-IT using NODEMCU-12E board in boards manager doesnt accept rtos and throws error in arduino i am so frustrated by this especially because i specially ordered these because of the rtos and dual core capability.Can any one of u please tell me how to...
by ESP_Dazz
Wed Aug 28, 2019 8:07 am
Forum: Hardware
Topic: ADC VRef calibration eFuse
Replies: 3
Views: 246

Re: ADC VRef calibration eFuse

Is there an easy way to override the fuse value when calling esp_adc_cal_characterize? No matter what I supply for the VREF param it always gets set to 1100 because the fuse takes priority. In esp-idf, the simplest way is to modify the esp_adc_cal_characterize() function directly as such: //Check e...
by ESP_Dazz
Thu Aug 22, 2019 6:26 am
Forum: ESP32 IDF
Topic: Can anyone guide me for debugging code on eclipse using WROVER kit
Replies: 2
Views: 143

Re: Can anyone guide me for debugging code on eclipse using WROVER kit

Just to rule out the obvious. Are you able to debug without using eclipse (i.e. running OpenOCD and GDB)?
by ESP_Dazz
Tue Aug 13, 2019 7:15 am
Forum: ESP32 IDF
Topic: watchdog timeout triggered by error in ieee80211_output.c
Replies: 1
Views: 164

Re: watchdog timeout triggered by error in ieee80211_output.c

E (59990) wifi: ieee80211_output.c 552 This is simply the last log output before the task watchdog triggered, thus is not necessarily the cause of the task watchdog timeout. Using make menuconfig , please enable the panic on task watchdog timeout option under Component Config->ESP32-Specific->Invok...
by ESP_Dazz
Tue Aug 13, 2019 6:40 am
Forum: ESP32 IDF
Topic: [Ubuntu] eclipse doesn't build anymore
Replies: 1
Views: 170

Re: [Ubuntu] eclipse doesn't build anymore

08:41:31 **** Build of configuration Default for project receiver **** make -j4 all Cannot run program "make": Unknown reason Check that you have provided the right paths in your project properties . Under Project Properties -> C/C++ Build -> Environment, your PATH variable should have appended the...
by ESP_Dazz
Tue Aug 13, 2019 6:14 am
Forum: ESP-IDF 中文讨论版
Topic: 求帮助,关于工程中components组件的问题
Replies: 2
Views: 218

Re: 求帮助,关于工程中components组件的问题

建议你直接将 station_example_main.c 拷到 get_started/hello_world/main 里,然后在 hello_world_main.c 里用 extern 声明所有在 station_example_main.c 被使用的函数。

如果你要自己创建一个 components/wifi/ ,你就要用 idf_component_register() 的 REQUIRES 指定这个 component 依靠了另外那一些 component,例如 nvs_flash。请看看 components/driver/CMakeLists.txt 作为例子。

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