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Bachelor's Degree in Telecommunications Systems and in Network Engineering |
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Basic concepts on microcontrollers (μC) |
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These concepts are learnt basically reading technical books and internet pages, and also reexamining content from introductory computer architecture courses.
List of common topics for a mid-range PIC18F family of microcontrollers:
1. Architecture
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Microprocessor (CPU+ROM+RAM+ basic I/O). Microcontroller (Microprocessor + peripherals).
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Harvard versus Von Neumann architecture. Concept of interconnection bus.
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8-bit ALU. Status register and flags (C, Z, DC, OV, etc.) . Working register (W) or accumulator.
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Program memory (EEPROM/Flash) and program execution. Stack memory and stack overflow.
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Data memory (RAM) size and organisation. Registers and configuration registers.
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Assembly language and instructions.
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Oscillator and CLK circuits: RC, quartz, etc.
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Reset (MCLR_L)and Power-On reset circuits.
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I/O port pins. Bidirectional pins. Bus and tri-state logic gates.
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IDE and our preferred design flow.
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C compiler. Step by step execution. Watch window. Break points, debugging.
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Instruction execution time. Main infinite program loop. Polling/sampling time.
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Interrupts. The idea of detecting important events that will disturb the main program. Interrupt service routine ISR().
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Interrupt sources.
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Enabling and prioritising interrupts interrupts. Configuration bits.
2. ALU and status register
3. Flash program memory (12, 14, 16 bit)
4. RAM data memory (8-bit)
5. Peripherals
6. Integrated development environment
MPLABX + XC8.
7. In Circuit Serial Programming
ISCP.
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