Hi, i have to make a code to send a data from visual to AVR to MCU and show it on 8 LED 7 segment display.
This is my C# code, right now i can't check, if is it working so can you tell me, if is it possible to send data like this?
1st code
And if is here someone, who can do Assembly language could you give me an advice, how to solve the avr problem? (I have to use ATmega128, AVR studio 4 and assembly language - it is school project) I need to recieve data from serial port from Visual read what is that (if 0,1...9) and then show it on display. I am not sure if the initialization is right and i dont know, how to read that data and put them to r18 to compare.
2nd code
Thank you for advice.
What I have tried:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
namespace test
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
string a;
private void button1_Click(object sender, EventArgs e)
{
SerialPort port = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);
textBox1.Text = a;
if (a == "0")
{
int b = 0b00000000;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "1")
{
int b = 0b00000001;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "2")
{
int b = 0b00000010;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "3")
{
int b = 0b00000011;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "4")
{
int b = 0b00000100;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "5")
{
int b = 0b00000101;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "6")
{
int b = 0b00000110;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "7")
{
int b = 0b00000111;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "8")
{
int b = 0b0001000;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
else if (a == "9")
{
int b = 0b0001001;
string c;
c = b.ToString();
port.Open();
port.Write(c);
port.Close();
textBox1.Clear();
}
}
}
}
.Nolist
.include"m128def.inc"
.LIST
.CSEG
ldi r22,LOW(RAMEND) ;initialization atmega128 ports
out SPL,r22
ldi r22,HIGH(RAMEND)
out SPH,r22
ldi r22, 0xff
out DDRD, r22
out DDRB, r22
out PORTD, r22
out PORTB, r22
rcall uart_init //i am not sure, if this initialization is right
ldi r24, 'A'
loop:
rcall uart_sendchar
rjmp loop
uart_init:
ldi r16, (1 << TXEN0) | (1 << RXEN0)
out UCSR0B, r16
ldi r16, 103
out UBRR0L, r16; // 9600 on 16MHz
ret
uart_sendchar:
sbis UCSR0A, UDRE0
rjmp uart_sendchar
out UDR0, r24
ret
// i dont know where can i read the recieved data, i would copy/move to r18 and then compare
nula: ; if data = combination -> jump to display
cpi R18, 0b00000000
brne jedna
jmp A0
jedna:
cpi R18, 0b00000001
brne dva
jmp A1
dva:
cpi R18, 0b00000010
brne tri
jmp A2
tri:
cpi R18, 0b00000011
brne ctyri
jmp A3
ctyri:
cpi R18, 0b00000100
brne pet
jmp A4
pet:
cpi R18, 0b00000101
brne sest
jmp A5
sest:
cpi R18, 0b00000110
brne sedm
jmp A6
sedm:
cpi R18, 0b00000111
brne osm
jmp A7
osm:
cpi R18, 0b00001000
brne devet
jmp A8
devet:
cpi R18, 0b00001001
brne exit
jmp A9
exit:
reti
A1:
LDI R17, 0b01100000 ;number
LDI R18, 0b11110011 ;position
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A2:
LDI R17, 0b11011010
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A3:
LDI R17, 0b11110010
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A4:
LDI R17, 0b01100110
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A5:
LDI R17, 0b10110110
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A6:
LDI R17, 0b00111110
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A7:
LDI R17, 0b11100000
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A8:
LDI R17, 0b11111110
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A9:
LDI R17, 0b11100110
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
A0:
LDI R17, 0b11111100
LDI R18, 0b11110011
OUT PORTD, R18
OUT PORTB, R17
rjmp delay1
delay1:
ldi r21, 2
ldi r19, 160
ldi r20, 146
L1: dec r20
brne L2
dec r19
brne L2
dec r21
brne L2
rjmp PC+1
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