RTOS excellent learning experience.
Does it have a preemptive scheduler?
How would you compare it to, say, FreeRTOS and its API?
Sunday, 31 May 2015 - 07:24
Arduino IDE Library to AS Arduino's IDE is oddball in that the libraries are not pre-compiled as .o files or a .a (archive) of .o files. Instead, Arduino's IDE attempted to simplify C/C++ building by...
IoT networks er, we have this wee little issue called curvature of the earth. Radio horizon is not very far away unless you have high-site antennas.
And 433MHz has severe regulatory...
Thursday, 21 May 2015 - 06:32
Unwanted warning from compiler I use parentheses to make it clear what the order of precedence is by intent.
I avoid using commas to separate expressions. Bad form. Dangerous.
IoT networks Sigfox, what a hoot. Unlicensed ISM band, sub-GHz. It'd take an impractically huge number of self-funded mesh network node members to support semi-ubiquitous coverage.
...
MicroSemi "LoRa" Chips? LoRa radios use spread spectrum with long code lengths, lots of FEC, etc. This lets them demodulate at very low or negative SNRs (due to post correlation gain).
These $5 radios...
Tuesday, 5 May 2015 - 05:48
Seeking low power wireless recommendation Re above..
WiFi and Bluetooth are industrial alliances' trademarks. These are based on IEEE standards like 802.11, 802.15.4, etc. The IEEE standards define frequency bands in...
excellent learning experience. Does it have a preemptive scheduler? How would you compare it to, say, FreeRTOS and its API?
Arduino's IDE is oddball in that the libraries are not pre-compiled as .o files or a .a (archive) of .o files. Instead, Arduino's IDE attempted to simplify C/C++ building by...
be sure to use volatile in declaring a global static in an ISR
er, we have this wee little issue called curvature of the earth. Radio horizon is not very far away unless you have high-site antennas. And 433MHz has severe regulatory...
I use parentheses to make it clear what the order of precedence is by intent. I avoid using commas to separate expressions. Bad form. Dangerous.
Funny thing about beginners and telemetry wireless... The users tend to start with $2 radios which are so crude they are not easy or fun to use. Like learning to drive in a stick...
Sigfox, what a hoot. Unlicensed ISM band, sub-GHz. It'd take an impractically huge number of self-funded mesh network node members to support semi-ubiquitous coverage. ...
easier to use SPI or SDIO
I recommend going ARM and not AVR32, for many reasons.
8 bit unsigned char in C.
LoRa radios use spread spectrum with long code lengths, lots of FEC, etc. This lets them demodulate at very low or negative SNRs (due to post correlation gain). These $5 radios...
Re above.. WiFi and Bluetooth are industrial alliances' trademarks. These are based on IEEE standards like 802.11, 802.15.4, etc. The IEEE standards define frequency bands in...
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