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In the previous blog in this series, using Flash for non-volatile program data was covered. One aspect of this was the F( ) macro that enables Serial.print/println strings to be accessed from Flash where the program is stored. That is, they do not consume RAM space allowing for more volatile programming space. This blog compares using and not using the F( ) macro. In the Telemetry sketch this allows for nearly double the number of name-value pairs
In the quest to reduce RAM usage with a RAM challenged Arduino device, this blog covers using permanent storage (Flash and EEPROM).
In Part 9 of this series, it was shown how to create a Version 1 table such that the id field is an auto-incremented integer which saves storage space on a small device. Version 1 tables don't automatically save a creation and modification date. This blog covers how to do it with a Script.
The default id field for a Azure Mobile Services Table, that the table is indexed on, is a string. By default the string that is auto-generated is a 36 character GUID string. This can be 3 or more times rest of the data sent as a HTTP Response to a default HTTP GET for each record from the Telemetry table . This blog discusses this issue and canvasses some options to resolve this overkill.
This blog covers the major revision of the Telemetry to remove old, now unnecessary code, fix some bugs, further improve error responses, and a stored data structure that makes the parsed JSon data available after the HTTP Response processing is complete.
Following on from Part 3b in this series, a few query options are exemplified.
This blog covers the Stream Parser - State Machine code in detail...
This blog presents a more complete JSon parser in the Arduino context that extracts the data entities from each record. in the JSon string. It is implemented as a Stream Parser - State Machine.
The three TelemetrySensor Arduino apps that mimic the desktop/phone Universal app UI functions are created by copying and appropriately editing the ToDoItem Arduino apps.
This blog presents a simple JSon parser in the Arduino context for the ToDo sketch that extracts the data entities from each record. in the JSon string.
Re: SurfPad: Index
this is a good post that you have written you can add more about the outlook or some other technology...
-- Configure Outlook 2016
Re: Azure Sphere - Hands on!!
Cool
-- David Jones
Re: Windows 10 IoT Core: Shutdown and Reboot the Raspberry Pi
Bruce, I noticed that you are sending a REST web request for controlling the pi. I looked online a for...
-- Waleed Elmandouh
Re: Strange HP Laptop Keyboard Fix–It worked for me.
Eh its happened again! Yes [Fn] and [ctrl] keys are swapped. So time to shutdown and remove the battery...
Re: Win 10 IoT-Core - Raspberry Pi3 Bluetooth Driver Issue: Workaround
Thank you for the workaround. I just tried it on my Raspberry Pi 3 running Win 10 IoT. It solved the...
-- Paul
When the BLE dongle is inserted it shows up on the default startup app main page as two entries: USB...
The above "comment" is the Device tree on Device Portal-Devices for the Bluetooth Driver/s with the ...
>HTREE\ROOT\0 >ACPI ARM-based PC >Microsoft ACPI-Compiant System ...
Re: Bluetooth Low Energy on Windows 10 Creators Edition and a RPi3 issue.
FYI: On RPI2 ========== When my USB BLE Dongle is plugged in I get two entries on the main page for the...