Microcontrollers misis 2017. Applications

1. INTRODUCTION TO THE WORLD OF MICROCONTROLLERS

Lecture 1
MICROCONTROLLERS
MISiS 2017

2. Applications

3. Microcontroller ≠ Microprocessor

Microcontroller =
CPU + ADC + RAM +
ROM + OSC + DAC +
EEPROM + SPI + I2C +
UART + Vregulator

4. NUMBERS

5. Operators Gate

AND Gate
Binary multiplication
OR GATE
Binary addition
NOT GATE EXCLUSIVE OR
Binary inverted
EXCLUSIVE OR

6. Operators C++

Symbol Function
Symbol
Function
++
+1
<<
a shift to the left
--
-1
>>
a shift to the right
~
Binary inverted
<
less
-
Arithmetical minus
>
more
+
Arithmetical plus
%
&
Binary multiplication
the remainder of the
division
&&
Logical and
|
Binary addition
||
Logical or
==
same
=
assignment
!=
Not same

7.

The block diagram
of the PIC16 microcontroller

8. HARVARD ARCHITECTURE

9. Pin numbers PIC16F877and functions

10. OSCILLATOR

11. Watch Dog Timer

12. A/D CONVERTER (12bit)

13. Hardware and firmware

14. Example 1

Read port and write port (GPIO) LEDs and buttons
Steps
Looking for MK, read PDF.
Make up the schematic circuit diagram
Do the device under the scheme
Draw the block diagram of the program
Write the code on the block diagram
Programmable

15. Make up the schematic circuit diagram

16. Do the device under the scheme

17. Draw the block diagram of the program

START
INITIALISATIONS
IF RA1==1
YES
RB0=1; // LED on
NO
RB0=0; // LED off

18. Write the code on the block diagram

#include <pic.h> // plug-in headers (libraries and files)
__CONFIG(0x03F72); // configurable MK
void main(void) //Start program
{
TRISА<1>=1; // select bit port input
// оr so: TRISA=0b111111;
//выход-0 вход-1
TRISB=0; //select bit port output
PORTB=0; //source data entry in the registers of the port
// оr so: RB0 = 0; // source data entry in the registers of the port
while(1) // infinite loop
{
if (RA1==1)
RB0=1;
//Yes
else RB0=0; //No
}
}