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A device which includes a central processing unit (CPU), memory, and (generally) an assortment of I/O peripherals (UART, ADC, DAC, general-purpose I/O, I2C, etc.) in a tightly-coupled standalone package.

1
vote
As you can see from serial monitor, "+CMGF" is preceded with "\r\n". Now imagine that your code finds first '\r' and then calls process(), which in turn clears buffer with memset (regardless of strstr …
answered Aug 1 '16 by Flanker
0
votes
Regarding microcontroller vs OOP programming, they are not something opposites. It is true that all vendor libraries are in plain C, but all platforms support C++ OOP too. Developers can build and do …
answered Jul 23 '16 by Flanker
2
votes
You can use almost any MCU with Wiznet W5500 embedded MAC + PHY controller, it is driven by SPI. The advantages are: it has built-in network stack, Tx/Rx buffers, requires minimum MCU pins, simplified …
answered Sep 24 '15 by Flanker
2
votes
I2C is multidrop protocol, on most devices address is fixed (for example DS3231 RTC) while on MCU it set by software. Multidrop means all devices are on the same bus and listening simultaneously while …
answered Jul 27 '16 by Flanker
0
votes
That pull-up R on D+ (or D-) is used to indicate the USB speed of the device. While host can detect the plugged device by this pull-up, in your case your have USB Device (Slave). And since it is self …
answered Aug 12 '16 by Flanker
2
votes
It is driver output enabled state, like DE pin set HIGH on MAX485. Check RS485 on a Scope. Common sense dictates that device shall disable transmitter ASAP after last stop bit is sent (to release the …
answered Jul 27 '16 by Flanker