Keil software programs
Program 1
org 00h
ljmp main
org 8100h
main:
mov a,#55
mov a,55h
mov a,r0
mov a,@r0
here:sjmp here
Program 2
org 00h
ljmp main
org 8100h
main:
MOV A,#55H ;load A with value 55H
MOV 40H,A ;copy A to RAM location 40H
MOV 41H,A ;copy A to RAM location 41H
MOV 42H,A
xx: SJMP xx
Program 3
org 00h
ljmp main
org 8100h
main:
MOV A,#55H ;load A with value 55H
MOV R0,#40H ;load the pointer. R0=40H
MOV @R0,A ;copy A to RAM R0 points to
INC R0 ;increment pointer. Now R0=41h
MOV @R0,A ;copy A to RAM R0 points to
xx: SJMP xx
Program 4 - LED Blink
org 00h
ljmp main
org 8100h
main:
MOV A,#55H ;load A with value 55H
back: MOV P1,A
ACALL DELAY
CPL A
ACALL DELAY
SJMP BACK
DELAY: MOV R0,#0FFH
MOV R1,#0FFH
MOV R2,#0FFH
L1: DJNZ R0,L1
L2: DJNZ R1,L2
L3: DJNZ R2,L3
RET
Program 5- Port data transfer
org 00h
ljmp main
org 8100h
main:
MOV A,#0FFH ;load A with value FFH
MOV P1,A
back: MOV A,P1
MOV P2,A
SJMP BACK
Program 6- LED_ON_OFF using embedded C
#include <reg51.h>
#defind LED P2;
void main(void)
{
P1=00; //clear P1
P2=0; //clear P2
for (;;) //repeat forever
{
P1++; //increment P1
P2++; //increment P2
}
}
Program 7- Time dealy using Timer
MOV TMOD,#01 ;Timer 0, mode 1(16-bit mode)
HERE: MOV TL0,#0F2H ;TL0=F2H, the low byte
MOV TH0,#0FFH ;TH0=FFH, the high byte
CPL P1.5 ;toggle P1.5
ACALL DELAY
SJMP HERE
DELAY:
SETB TR0 ;start the timer 0
AGAIN: JNB TF0,AGAIN ;monitor timer flag 0
;until it rolls over
CLR TR0 ;stop timer 0
CLR TF0 ;clear timer 0 flag
RET
Real time temperature analysis using Node MCU, Things speak, Arduino IDE, LM35
#include "ThingSpeak.h"
#include <ESP8266WiFi.h>
const int LM35 = A0;
//----------- Enter you Wi-Fi Details---------//
char ssid[] = "Your WIFI name"; //SSID
char pass[] = "Your WIFI password"; // Password
//-------------------------------------------//
WiFiClient client;
unsigned long myChannelNumber = 2330518; // Channel ID here
const int FieldNumber = 1;
const char * myWriteAPIKey = "UGPA60UT6W30KA3E"; // Your Write API Key here
void setup()
{
Serial.begin(115200);
WiFi.mode(WIFI_STA);
ThingSpeak.begin(client);
}
void loop()
{
if (WiFi.status() != WL_CONNECTED)
{
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
while (WiFi.status() != WL_CONNECTED)
{
WiFi.begin(ssid, pass);
Serial.print(".");
delay(5000);
}
Serial.println("\nConnected.");
}
int ADC;
float temp;
ADC = analogRead(LM35); /* Read Temperature */
temp = (ADC * 3); /* Convert adc value to equivalent voltage */
temp = (temp / 10); /* LM35 gives output of 10mv/°C */
Serial.print("Temperature = ");
Serial.print(temp);
Serial.println(" *C");
delay(1000);
ThingSpeak.writeField(myChannelNumber, FieldNumber, temp, myWriteAPIKey);
delay(1000);
}
Connecting Node MCU to WIFI using mobile hotspot
#include <ESP8266WiFi.h> // Include the Wi-Fi library
const char* ssid = "Your wifi name"; // The SSID (name) of the Wi-Fi network you want to connect to
const char* password = "Your wifi password"; // The password of the Wi-Fi network
void setup() {
Serial.begin(115200); // Start the Serial communication to send messages to the computer
delay(10);
Serial.println('\n');
WiFi.begin(ssid, password); // Connect to the network
Serial.print("Connecting to ");
Serial.print(ssid); Serial.println(" ...");
int i = 0;
while (WiFi.status() != WL_CONNECTED) { // Wait for the Wi-Fi to connect
delay(1000);
Serial.print(++i); Serial.print(' ');
}
Serial.println('\n');
Serial.println("Connection established!");
Serial.print("IP address:\t");
Serial.println(WiFi.localIP()); // Send the IP address of the ESP8266 to the computer
}
void loop() { }
Virtusa recruitment for B.Tech/M.Tech students
Andhra Pradesh State Skill Development Corporation in association with Virtusa is conducting Graduate Talent Program for 2022 batch, Full time degree - MCA , BE/B.TECH and ME/M.Tech.
Virtusa has requested APSSDC’s assistance in registering candidates from Engineering and PG colleges across Andhra Pradesh.
Please find below the Eligibility Criteria
Education
• 10th , 12th & graduation /Post graduation - Overall 65% or Above
• Full time degree - MCA , BE/B.TECH and ME/M.Tech – All the streams are eligible
Year of Passing
• Students in their final year are eligible ( 2022 Pass outs only )
Designation
• Associate Engineer – Technology
Compensation
• Regular - 4 LPA
• Power Developer – 6.5 LPA
Selection Process
• All the Eligible candidates must go through below online assessment & details are added below - Exam Duration:- 3 hours
• Power Coding is optional – Those aiming for a 6.5 LPA package can go ahead and attempt this section
• Those clearing Technical Assessment will have 1 Technical & 1 HR round
• Candidate need to be flexible in terms of work location
• Need to sign 2 years’ service agreement once they join Virtusa
Registration link
https://forms.gle/7Ehm9CdQb22oxgKL6
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