عمل مشروع pic assemply code + protus desgin

المشروع اولا بالنسبة للتشبيك وماذا نستخدم .

16F877A PICMicro programming under MPLAB

crystal

resistor

button

LM016L lcd

capacitor

add a 10K

pull-up resistor to push button P (or use the internal weak pull-up resistor if usin

PortB), add a 4MHZ oscillator (with 2 × 15pF capacitors) and a 10K

pull-up

resistor to the MCLR pin

Use the LCD in the 4-bit mode. Connect pin D4 of the LCD to RA0, pin D5 to

RA1, pin D6 to RA2, pin D7 to RA3, pin RS to RA4 and pin E to RA5. Remember

to pull up the RS pin using a 4.7K

resistor

• Enable interrupts on push button P.

• Build the PIC assembly code that implements the behavior described above under

MPLAB IDE.

هذا بالنسبة للتشبيكة اما بالنسبة للكود وكيف رح يشتغل رخ اكتبي نص حاليا:

We would like to build a simple calculator that is able to perform mathematical operations

on integer numbers. We’ll assume the following:

• Each integer number will not exceed 65535 (2 bytes).

• The supported mathematical operations are only the + (addition), / (division) and

% (modulo). The division operation should output both the quotient and remainder

parts.

The hardware should be composed of a 16F877A microcontroller, a push button P to

enter the numbers and a 16 × 2 character LCD. The system should behave as follows:

• When the system is powered up, the first line of the LCD should display the message

Enter Operation.

• On the second line, when we click on the push button, the ten thousandth part of

the first number should increment by 1. Since originally the ten thousandth part

is 0, the first click should make it 1, the second click should make it 2, the third

click should make it 3, etc until it reaches the value 6. On the seventh click, the ten

thousandth number goes back to 0, and so on.

• If we leave P unclicked for over 2 seconds, the ten thousandth part of the first number

becomes fixed. Next, the thousandth part of the first number will be increased when

we click the push button P. If the ten thousandth part is 6, then the thousandth

part should not exceed 5 before rolling back to 0. Otherwise, if the ten thousandth

part is lower than 6, then the thousandth part is allowed to increase with every click

from 0 to 9 and then back to 0, and so on.

• If we leave P unclicked for over 2 seconds, the thousandth part of the first number

becomes fixed. Next, the hundredth part of the first number will be increased when

we click the push button P. If the ten thousandth part is 6 and the thousandth

part is 5, then the hundredth part should not exceed 5 before rolling back to 0.

Otherwise, the hundredth part is allowed to increase with every click from 0 to 9

and then back to 0, and so on.

• The same behavior described above applies for both the tenth and unit values of the

first number.

• After entering the unit value, if we leave P unclicked for over 2 seconds, the first

number becomes fixed. Next, we need to choose the mathematical operation. The

default selected operation is the + operation (addition). Clicking on P will select

and display the operation / (division). Clicking for the second time will select and

display the operation % (modulo). Further clickings will toggle between the +, the

/ and the % operations.

• If we leave P unclicked for over 2 seconds, the mathematical operation has been

selected. Next, we need to proceed to entering the second integer number. That

happens in the same order we entered the first number (e.g. the ten thousandth

part first, then the thousandth part, then the hundredth part, then the tenth part,

then the unit part).

• Once the second integer number has been entered, the system should put the sign =

and then execute the mathematical operation and display the result after the =. In

addition, the first LCD line should display the message result.

• After 3 seconds, the system should display on the first row the message Keep?

[1:Y, 2:N]. The idea here is that the user might want to keep the numbers he/she

selected but chage the operation. A single click means yes, a double-click means no.

If the user makes a double-click (No), go back to the top when the system was pow-

ered up and repeat the same steps (e.g. select the first number, the mathematical

operation and the second number). If the user makes a single click (Yes), display

the 2 numbers selected previously and position the cursor on the operation type. As

mentioned above, the default operation is the addition operation. Clicking on the

push button P will toggle between +, / and % operations. If we leave P unclicked

for over 2 seconds, the mathematical operation has been selected. The system should

put the sign = and then execute the mathematical operation and display the result

after the =.

• After 3 seconds, go back to the previous step and display on the first row the message

Keep? [1:Y, 2:N] and repeat the same steps described above.