python day4,variable types,print formats

 variable

=====================
1.a,b,c,d------allowed
2. total,subtotal,grandtotal-----allowed
3.total1,key1,key2354 -----allowed
4.grand_total,coaching_center, cinema_theatre,s_s_rajamouli,SSRajamouli,CinemaTheatre---allowed
5.ca$h---not allowed
6._mode---allowed
7._ab_abc_abcd---allowed

sep in print:
===============
print("this is praveen","this is testing",sep="------")

output:
this is praveen------this is testing

format in print
==================
print("My name is {firstname}, I'm {age}".format(firstname = "praveen", age = 36))
print("My name is {0}, I'm {1},totals {2}".format("praveen",36,24.56))
print("My name is {0}, I'm {1},totals {total}".format("praveen",36,total=24.56))



if and else:
========================
condition true if statements prints
condition false then else statement prints

a=0
if a==1:
    print("we will go movies")
else :
    print("indendation is also working fine")

print("second friend sit in home")


ex2:
a="test"
if a=="test":
    print("this is if loop")
    print("we will go movies")
    print("we will go movies")
    print("we will go movies")
else :
    print("this is else loop")

print("second friend sit in home")

example3:
a=4
budget=1
alcohal=1
beach=2
if a==4:
    if budget==1:
        if alcohal==1:
            print("we will drink")

            if beach==1:
                print("beach is empty")
            else:
                print("beach is very busy")

        else:
            print
    else:
        print("no goa sorry")

else :
    print("this is else loop")

print("second friend sit in home")

Multiple data bases support in SQLITE3

 DATABASES = {

    'default': {
        'ENGINE': 'django.db.backends.sqlite3', 
        'NAME': os.path.join(DIR, 'django.sqlite3'),
        'USER': '',
        'PASSWORD': '',
        'HOST': '',
        'PORT': '',
    },
    'anil': { # this is our sample db, already created
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(DIR, 'anil_Sqlite.sqlite'),
        'USER': '',
        'PASSWORD': '',
        'HOST': '',
        'PORT': '',
    }
}

password checking code in python and django

 password_check1="Anil@123"

password_check2=[]

#i=password_check1.capitalize()

if len(password_check1)>=8:

    if password_check1[0].isupper()==True:

        if password_check1.isspace()==False:

            lookingfor = "@"

            for c in range(0, len(password_check1)):

                if password_check1[c] == lookingfor:

                    pass

                    #print("given characteris there in",password_check1)

            for word in password_check1.split():

                if word.isdigit():

                    password_check2.append(int(word))

                    print(password_check2)

                else:

                    print("no digits")

        else:

            print("dnot give spaces")

    else :

        print("first letter should be capital")

        

else :

    print("password should be min 8 letter")

MM32F003TW SWDIO as GPIO working code

 

MM32F003TW SWDIO as GPIO working code

please download  by clicking below link

Download

MM32F003TW with PWM working code

 

please click below to download the code.

in this PWM technique used to reduce the LED brighness

Download

RFM98w with arudino libraries

 

please click below link to download the file

click here

https://drive.google.com/file/d/19DJQqx37YO6oVXPzKPpfdEzZ7Q1Vk0ij/view?usp=sharing

import * working method

 

create a file on student.py

========================

class Person:

  def __init__(self, name, age):

    self.name = name

    self.age = age

def anil_test(i):

    print("this is working"+i)

create another file test.py

======================

#from student import anil_test,Person

from student import *

anil_test("anil")

p1 = Person("John", 36)

print(p1.name)

print(p1.age)

Django models test

 Django models test...

======================

.in models.py file

class student(models.Model):

    student_sno = models.IntegerField();

    student_name = models.CharField(max_length=256);

    student_father_name= models.CharField(max_length=256);

class student_class(models.Model):

    student = models.ForeignKey(student,on_delete=models.CASCADE) 

python manage.py makemigrations your_app

python manage.py sqlmigrate your_app 0001

python manage.py migrate

python .\manage.py shell

in db shell

=====================

from chess2.models import student, student_class

Django html tags display

 Django html tags display:

========================

By writing html tags you can achieve the output 

go into views.py file

def menu(request):

    return HttpResponse("<h1>This is working menu</h1>");

django installation process

 django installation process:

=============================

pip install virtualenvwrapper-win

mkvirtualenv test

pip install django

django-admin --version

mkdir yourfolder

cd yourfolder

django-admin startproject yourprojectname

python manage.py runserver

to create virtual environment in vscode:

=======================================

workon "base"

python manage.py startapp yourapp

creating your app:

=======================

create urls.py in your app

urlpatterns=[

path('',views.home,name='home')

]

go into views.py

add :from django.http import HttpResponse

create a function home

def home(request):

return HttpResponse("we are into our own page");

go into urls project:

add below line

path('',include('yourapp.urls'))

AT

 

AT commands testing on ESP32-WROOM-32

ESP32-WROOM-32 PINOUT DIAGRAM

 

ESP32-WROOM-32 - ESP32-WROOM-32 module soldered to the development board. Optionally ESP32-WROOM-32D, ESP32-WROOM-32U or ESP32-SOLO-1 module may be soldered instead of the ESP32-WROOM-32.

USB-UART Bridge - A single chip USB-UART bridge provides up to 3 Mbps transfers rates.

BOOT button - Download button: holding down the Boot button and pressing the EN button initiates the firmware download mode. Then user can download firmware through the serial port.

EN button - Reset button: pressing this button resets the system.

Micro USB Port - USB interface. It functions as the power supply for the board and the communication interface between PC and the ESP module.

TX0, TX2 - transmit pin. GPIO pin

RX0, RX2  - receive pin.  GPIO pin

3V3 (or 3V or 3.3V) - power supply pin (3-3.6V). 

GND - ground pin.

EN - Chip enable. Keep it on high (3.3V) for normal operation.

Vin - External power supply 5VDC.

1.   Uploading AT firmware/Firmware upgrade

CONNECTIONS :

·       Attach USB cable one side to ESP32-WROOM-32

·       Connect the another end PC/LAPTOP

 

Shown below

2. Using USB to TTL converter for AT communication

ESP32-WROOM-32 firmware versions

 

ESP32-WROOM-32 AT Bin V1.1.1 2018.07.11

ESP32-WROOM-32 AT Bin V1.1 2018.06.13

ESP32-WROOM-32 AT Bin V1.0 2017.11.17

ESP32-WROOM-32 AT Bin V0.10 2017.06.14

 

 

1.     Do wiring for uploading AT firmware/firmware update.

2.     Download Flash Download Tools (ESP8266 & ESP32) from espressif.com.  

The ESP32 Flash Download Tool, just like the ESP8266 download tool, is the official Espressif Download tool that runs on Windows platform. The tool can be used to modify and generate init BINs, generate consolidated BIN files or program multiple chips for production runs.

The tool uses COM port to send BIN files from PC to the ESP32, which then flashes the data to the primary flash chip.

The ESP32 Flash Download Tool, just like the ESP8266 download tool, is the official Espressif Download tool that runs on Windows platform. The tool can be used to modify and generate init BINs, generate consolidated BIN files or program multiple chips for production runs.
The tool uses COM port to send BIN files from PC to the ESP32, which then flashes the data to the primary flash chip.

3.     Download and unzip the latest AT firmware for your module (Check which module you have, for example we have ESP32-WROOM-32). We used this firmware here: ESP32-WROOM-32 AT Bin V1.1.1 2018.07.11

4.     Go to the folder ESP32-WROOM-32_AT_V1.1.1 and find file named download.config. 

 

• You can open it with Notepad program. This file has configuration for ESP32 download tool: --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0x20000 at_customize.bin 0x21000 customized_partitions/ble_data.bin 0x24000 customized_partitions/server_cert.bin 0x26000 customized_partitions/server_key.bin 0x28000 customized_partitions/server_ca.bin 0x2a000 customized_partitions/client_cert.bin 0x2c000 customized_partitions/client_key.bin 0x2e000 customized_partitions/client_ca.bin 0xf000 phy_init_data.bin 0x100000 esp-at.bin 0x8000 partitions_at.bin.
• You will need to upload 9 files to your ESP32 development board: 0x1000 bootloader/bootloader.bin 0x20000 at_customize.bin 0x21000 customized_partitions/ble_data.bin 0x24000 customized_partitions/server_cert.bin 0x26000 customized_partitions/server_key.bin 0x28000 customized_partitions/server_ca.bin 0xf000 phy_init_data.bin 0x100000 esp-at.bin 0x8000 partitions_at.bin
• Unzip, open FLASH_DOWNLOAD_TOOLS_V3.6.4 folder and double-click on ESPFlashDownloadTool_v3.6.4.exe
• Click on ESP32 DownloadTool button. Select SPIDownload tab. Set configuration as shown below:

 

 

 

 

 

 

 

AT commands firmware for memory locations

1. bootloader.bin:0x1000

2. at_customize.bin:0x20000

3. server_cert.bin:0x24000

4. server_key.bin:0x26000

5. server_ca.bin:0x28000

6. client_cert.bin:0x2a000

7. client_key.bin:0x2c000

8. client_ca.bin:0x2e000

9. phy_init_data.bin:0xf000

10. esp-at.bin:0x100000

11. partitions_at.bin:0x8000

Download tool

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

After flashing the firmware

 

 

 

 

 

 

 

 

 

 

 

 

 

To communicate (use AT commands) with ESP32 development board you need USB to TTL converter. 

For using this USB to UART Converter you need a software tool. You can use different software tools: Terminal, USR-TCP232-Test V1.4, AiThinker_Serial_Tool_V1.2.3, coolterm, sscom3.2 , KiTTY, putty,tera term, Access port and so on. We recommend you to use AiThinker_Serial_Tool_V1.2.3 or sscom3.2, as you can save your AT commands and it's very easy to use.

• Do wiring for using USB to TTL converter for AT communication.
• Plug your USB to TTL converter into your PC USB port. Download and install drivers. See more info here.
• Download and install software tool. We will use AiThinker_Serial_Tool_V1.2.3 here.
• Set the baud rate 115200, data bits 8, parity bits none,stop bits one.
• Click on Open Serial button.

 

Results

• First you need to check if AT commands are working - enter “AT” and press  Send button.This would print "OK" which signifies of working connection and operation of the module.
• Requests TA revision identification. Enter "AT+GMR" and press Send button.
• For other AT commands see list here.