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That's a fair question. There definitely are people not wanting the additional stuff from Amazon.
For example, probably most people using FreeRTOS thus far were using it for ordinary MCU stuff like listening for button presses and blinking LEDs without even involving a wifi transceiver at any point.
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No existing Linux-based RTOS that I know of will run on a microcontroller. Not enough Flash for program memory or RAM for volatile storage. Can any useful Linux-based RTOS kernel fit into 1MB of non-volatile storage and use less than ~512KB RAM; would love to know of one if it exists!
Replied as a sibling, and it certainly doesn't qualify as useful, but Dmitry Grinberg wrote an ARM emulator for AVR, soldered a SIMM to a board with an ATMEGA1284P and an SD card on an SPI bus connection, and got Linux to boot. The 24MHz clock rate is effectively reduced to about 6.5kHz, but it might be possible to find a use for such a device.
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Been awhile since I dealt with microcontrollers, but my recollection is that some non-trivial amount of things have to be done by a RTOS. For example if your thing is attached to a sensor that spits out 47 bytes of sensor data every N clock cycles, and has a buffer that is 94 bytes, then you damn well better be reading that thing every N*2 clock cycles with a hard guarantee that your routine is finished copying all 9…
Two models are common in embedded systems: "main loop" or RTOS. In the main loop model, once initialization is complete, the program loops indefinitely, servicing various functions. Since the developer is responsible for a larger portion of the code, it is easier to meet timing deadlines. An RTOS provides a convenience to allow various threads to block and thus simplify programming. I would choose an RTOS where there…
Amazon^WAmazing how four of the top page articles are about new Amazon products today.
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GPL is also a non-FOSS license. It says it is, but its not. Can't wait until the GPL is a rarely used license.
Would you care to elaborate on what you believe makes the GPL a non-FOSS license?
>Amazon FreeRTOS ... and extends it with software libraries that make it easy to securely connect your small, low-power devices to AWS cloud services why do IoT devices have to connect to the cloud? Is there any legitimate use case other than reporting data gathered on the customer? Why do have all these gadgets have to snoop on us?
to allow a "secure" connection (plus all the snooping and reporting).
as near as i can tell, there's no way to concoct a device to run on a home network which an average consumer's browser will be happy talking SSL to.
(if anyone knows a way i'd love to hear it.)
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GPL would be fine too; I'd just like something that actually qualifies as FOSS, rather than something proprietary.
GPL is also a non-FOSS license. It says it is, but its not. Can't wait until the GPL is a rarely used license.
Everything will have a light version open source, with the actual goodies only available in the commercial version.
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I do hope they'll keep maintaining it - I've been working with an ESP32 lately and the stuff Espressif has been able to build using FreeRTOS as a base is nothing short of incredible. $7 for wifi and bluetooth on a development board.
Agreed, the esp32 has blown me away with what it can do for a few dollars. I have a custom board with the esp-wroom-32 and the temperature sensor I'm using is more expensive than the esp32 module!
Which for anyone that used a PCW, means it can do a lot.
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GPL is also a non-FOSS license. It says it is, but its not. Can't wait until the GPL is a rarely used license.
We will be back to the world of public domain and freeware. Everything will have a light version open source, with the actual goodies only available in the commercial version.