latch buffer.py (continued) import RPi.GPIO as GPIO import time # Import the PRi.GPIO library # Import the Time library GPIO.setmode (GPIO.BCM) GPIO.setwarnings (False) # BCM: Broadcom SOC channel # Do not print GPIO warning messages # Define Decimal (or binary) output pins # Define GPIO pin # 5 for 1's column # Define GPIO pin # 6 for 2's column # Define GPIO pin # 13 for 4's column # Define GPIO pin # 19 for 8's column D1 = 5 D2 = 6. D3 = 13 D4 = 19 GPIO.setup(D1, GPIO.OUT) GPIO.setup (D2, GPIO.OUT) GPIO. setup (D3, GPIO.OUT) GPIO. setup (D4, GPIO.OUT) # Setup D1 for GPIO.OUT # Setup D2 for GPIO.OUT # Setup D3 for GPIO.OUT # Setup D4 for GPIO.OUT # Define Enalbing pins en latch = 16 en buffer = 12 values to BUS - LED will be on # Enable the latches to get the decimal (or binary) value # Enalble the buffers, resulting in forwarding the buffer GPIO.setup(en latch, GPIO.OUT) GPIO.setup (en buffer, GPIO.OUT) # Setup en buffer for GPIO.OUT # Setup en latch for GPIO.OUT
latch buffer.py (continued) import RPi.GPIO as GPIO import time # Import the PRi.GPIO library # Import the Time library GPIO.setmode (GPIO.BCM) GPIO.setwarnings (False) # BCM: Broadcom SOC channel # Do not print GPIO warning messages # Define Decimal (or binary) output pins # Define GPIO pin # 5 for 1's column # Define GPIO pin # 6 for 2's column # Define GPIO pin # 13 for 4's column # Define GPIO pin # 19 for 8's column D1 = 5 D2 = 6. D3 = 13 D4 = 19 GPIO.setup(D1, GPIO.OUT) GPIO.setup (D2, GPIO.OUT) GPIO. setup (D3, GPIO.OUT) GPIO. setup (D4, GPIO.OUT) # Setup D1 for GPIO.OUT # Setup D2 for GPIO.OUT # Setup D3 for GPIO.OUT # Setup D4 for GPIO.OUT # Define Enalbing pins en latch = 16 en buffer = 12 values to BUS - LED will be on # Enable the latches to get the decimal (or binary) value # Enalble the buffers, resulting in forwarding the buffer GPIO.setup(en latch, GPIO.OUT) GPIO.setup (en buffer, GPIO.OUT) # Setup en buffer for GPIO.OUT # Setup en latch for GPIO.OUT
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
PLEASE INCORPORATE THIS IN THE CODE
Infinite Loop
Assert to enter a decimal number (0 – 15)
Convert DEC to BIN
Set the Latches enabled and the Buffers disabled
Set the binary value to the Latches
Wait 2 – 3 seconds
Set the Latches disabled and the Buffers enabled
![## Python Code for Latch Buffer Example
### latch_buffer.py (continued)
```python
A = input("Enter a decimal number to store [0-15]: ")
IN = input("Enable the latches? (0: disable, 1: enable): ")
OUT = input("Enable the buffers? (0: disable, 1: enable): ")
# Convert DEC to BIN
Abin = []
Abin = [0, 0, 0, 0]
n = 0
while A > 0:
Remainder = int(A % 2)
Abin[n] = Remainder
A = int(A / 2)
n = n + 1
print "Binary value for Decimal: "
for x in reversed(Abin):
print(x)
# Set the enable signal for Latch
GPIO.output(en_latch, IN)
# Set the enable signal for Buffer
GPIO.output(en_buffer, OUT)
# Set the binary value to the Latch
GPIO.output(D4, Abin[3])
GPIO.output(D3, Abin[2])
GPIO.output(D2, Abin[1])
GPIO.output(D1, Abin[0])
```
This script is designed to convert a decimal number (0-15) into its binary representation and then send this binary data to a set of outputs that can be enabled or disabled based on user input. The code utilizes the GPIO library for output operations, typically used in hardware scenarios like a Raspberry Pi to interface with I/O pins.
1. **User Input**: It prompts the user for a decimal number, as well as enabling latches and buffers.
2. **Binary Conversion**: A loop converts the decimal number into binary, storing each bit in the `Abin` list.
3. **Output the Binary Value**: The binary equivalent of the input decimal is printed in reverse order.
4. **GPIO Signals**: Depending on the user input, the specified GPIO pins are set with the binary data and enable signals for latches and buffers.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa9ea4650-40bb-48db-9266-4f1ed996eb4b%2F58153e04-8e11-468b-b0f4-12734ab9e01c%2Fuqxt67l_processed.png&w=3840&q=75)
Transcribed Image Text:## Python Code for Latch Buffer Example
### latch_buffer.py (continued)
```python
A = input("Enter a decimal number to store [0-15]: ")
IN = input("Enable the latches? (0: disable, 1: enable): ")
OUT = input("Enable the buffers? (0: disable, 1: enable): ")
# Convert DEC to BIN
Abin = []
Abin = [0, 0, 0, 0]
n = 0
while A > 0:
Remainder = int(A % 2)
Abin[n] = Remainder
A = int(A / 2)
n = n + 1
print "Binary value for Decimal: "
for x in reversed(Abin):
print(x)
# Set the enable signal for Latch
GPIO.output(en_latch, IN)
# Set the enable signal for Buffer
GPIO.output(en_buffer, OUT)
# Set the binary value to the Latch
GPIO.output(D4, Abin[3])
GPIO.output(D3, Abin[2])
GPIO.output(D2, Abin[1])
GPIO.output(D1, Abin[0])
```
This script is designed to convert a decimal number (0-15) into its binary representation and then send this binary data to a set of outputs that can be enabled or disabled based on user input. The code utilizes the GPIO library for output operations, typically used in hardware scenarios like a Raspberry Pi to interface with I/O pins.
1. **User Input**: It prompts the user for a decimal number, as well as enabling latches and buffers.
2. **Binary Conversion**: A loop converts the decimal number into binary, storing each bit in the `Abin` list.
3. **Output the Binary Value**: The binary equivalent of the input decimal is printed in reverse order.
4. **GPIO Signals**: Depending on the user input, the specified GPIO pins are set with the binary data and enable signals for latches and buffers.
Transcribed Image Text:# Python code (1)
## latch_buffer.py (continued)
```python
import RPi.GPIO as GPIO # Import the RPi.GPIO library
import time # Import the Time library
GPIO.setmode(GPIO.BCM) # BCM: Broadcom SOC channel
GPIO.setwarnings(False) # Do not print GPIO warning messages
# Define Decimal (or binary) output pins
D1 = 5 # Define GPIO pin # 5 for 1's column
D2 = 6 # Define GPIO pin # 6 for 2's column
D3 = 13 # Define GPIO pin # 13 for 4's column
D4 = 19 # Define GPIO pin # 19 for 8's column
GPIO.setup(D1, GPIO.OUT) # Setup D1 for GPIO.OUT
GPIO.setup(D2, GPIO.OUT) # Setup D2 for GPIO.OUT
GPIO.setup(D3, GPIO.OUT) # Setup D3 for GPIO.OUT
GPIO.setup(D4, GPIO.OUT) # Setup D4 for GPIO.OUT
# Define Enabling pins
en_latch = 16 # Enable the latches to get the decimal (or binary) value
en_buffer = 12 # Enable the buffers, resulting in forwarding the buffer values to BUS - LED will be on
GPIO.setup(en_latch, GPIO.OUT) # Setup en_latch for GPIO.OUT
GPIO.setup(en_buffer, GPIO.OUT) # Setup en_buffer for GPIO.OUT
```
*Explanation:*
- This script is part of a Python code for controlling GPIO (General Purpose Input/Output) pins on a Raspberry Pi.
- **RPi.GPIO** is a Python library used to control the GPIO pins.
- The pins D1, D2, D3, and D4 are defined to control digital outputs on corresponding GPIO pins.
- **en_latch** and **en_buffer** are enabling pins. When activated, they enable certain operations or data flow in the GPIO circuit, such as driving LEDs.
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