From man gmtime: The gmtime() function converts the calendar time timep to broken-down time representation, expressed in Coordinated Universal Time (UTC). It may return NULL when the year does not fit into an integer. The return value points to a statically allocated struct which might be overwritten by subsequent calls to any of the date …
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For WPS to work on the ESP8266 and using the non-OS SDK, be sure to call wifi_wps_enable() before setting the callback function with wifi_set_wps_cb(). For example: In the callback itself, call wifi_wps_disable() before wifi_station_connect(). For example:
If esptool is limited to 115200 bps when flashing your firmware to an ESP8266, you can try to change this by following these instructions. Locate esptool.py for your installation. On Debian and Ubuntu, this file is located in /usr/share/esptool. Edit esptool.py and change the value on the line starting with ESP_ROM_BAUD from 115200 to the …
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I don’t remember if this is in the documentation, but having spent a few hours to figure things out, I consider this essential information that must be recorded here. For example:
On the ESP8266 ESP-01, CH_PD must be pulled HIGH at boot for the chip to work. Some variants of the ESP-01 module do not require this, but it does not hurt to have it so. The connection can be done directly or via a 10K resistor.
This is a cautionary tale for developers who switch between programming languages often. Whilst reviewing some logs, I noticed that durations of pauses between API requests were incorrect. They were expected to double on every subsequent attempt, starting from a fixed base interval; for example, 5 seconds, 10 seconds, 20 seconds, 40 seconds, and so …
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A VARCHAR value that is in scientific notation can be converted to a DECIMAL value by first converting it to a REAL value, then to the DECIMAL value. For example: This also works with CAST.
If you use a virtual machine, you might have noticed that its system time starts to lag after it has been in the ‘powered on’ state for some time. To address this, it is useful to run an NTP (Network Time Prococol) client within the VM to have its time synchronised regularly. On Windows, this …
AddInitialRequestCultureProvider() in ASP.NET Core localisation seems to have an undefined behaviour when it is used in both services and application builder configurations to add a custom RequestCultureProvider. If you want to use a custom RequestCultureProvider to customise how the applicable culture is determined for an incoming HTTP request (for example, by looking up the chosen …
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This is a blog response to the question ‘How can you minimize the impact of the persistence layer on your domain models?’ posted on reddit /r/dotnet, showing how I would have implemented the solution in the purest form of OOP that is possible with C#. (Note: The implementation of the factory and persistence classes is …
Continue reading “How can you minimize the impact of the persistence layer on your domain models?”