Bash script providing pins information on RPI

!/bin/bash
# A menu driven shell script for rpi
# ----------------------------------
# 27 April 2020
# Mark David Harrington
# ----------------------------------

#escape codes

RED='\033[0;41;30m'
STD='\033[0;0;39m'
IRed='\033[0;91m'         # Red
IGreen='\033[0;92m'       # Green
IYellow='\033[0;93m'      # Yellow
IBlue='\033[0;94m'        # Blue
IPurple='\033[0;95m'      # Purple
ICyan='\033[0;96m'        # Cyan
IWhite='\033[0;97m'       # White


# ----------------------------------
#  User defined functions
# ----------------------------------


#global variable
CURRENTDATEONLY=`date +"%A, %b %d, %Y %H:%M:%S"`

pinsfileA=MyPyInfo/piInfoA.txt
pinsfileB=MyPyInfo/piInfoB.txt
cpuInfo=MyPyInfo/cpuInfo.txt
mboard=MyPyInfo/motherboard.txt


#make directory

mkdir MyPiInfo ##  where we will store information from menu derived results

## pause function

pause(){

  read -p "Press [Enter] when complete to continue..." p_EnterKey
}

# list all pins bcm and connector and  wiring pi and gpio

ShowBCMPins(){

    echo "Listing pins for Raspberry PI"
     sleep 0.5 #  # sleep for 0.5 seconds
        gpio readall | tee "$pinsfileA" # display pin out and write to file

         echo ""
             echo "" ## two lines spaceing

               echo -e "${ICyan}All info is saved for you in ${pinsfileA}${STD}"

          pause

}

#  Show quick reference to pins

ShowQuickReference(){

    # display alternative  pin diagram
    echo "Alternative Listing pins for Raspberry PI"
       sleep 0.5 #  # sleep for 0.5 seconds
        pinout  | tee "$pinsfileB"   # display pin out and write to file

          echo ""
             echo "" ## two lines spaceing

               echo -e "${ICyan}All info is saved for you in ${pinsfileB}${STD}"

          pause

}

# display all cpuinfo  about rpi

DisplayCpuInfo (){

    # display all cpuinfo  about rpi
    echo " Displaying all cpuinfo  on your raspebbbry pi "
      sleep 0.5 #  # sleep for 0.5 seconds
        cat /proc/cpuinfo | tee "$cpuInfo"  # write this to file
          echo ""
             echo "" ## two lines spaceing

               echo -e "${ICyan}All info is saved for you in ${cpuInfo}${STD}"
                 pause

}

# display all modle number of rpi

DisplayBoardInfo()
{

    # display all modle number of rpi
    echo "Displaying all motherboard info  "
      sleep 0.5 #  # sleep for 0.5 seconds
        cat /proc/device-tree/model | tee "$mboard" # write this to file
             echo ""
             echo "" ## two lines spaceing

               echo -e "${ICyan}All info is saved for you in ${mboard}${STD}"

                pause



}

# quit function

QuitMenu()
{
    echo ""
    echo ""
    echo -e "   ${ICyan}**********************************************${STD}"
    echo -e "   ${ICyan}*      Thank you for using this menu         *${STD}"
    echo -e "   ${ICyan}*         Mark David Harrington              *${STD}"
    echo -e "   ${ICyan}**********************************************${STD}"

        sleep 1
          clear
            exit 0
}


# function to display menus
show_menus() {

    clear
    echo -e "   ${IRed}**********************************************${STD}"
    echo -e "   ${IRed}*  Date : ${CURRENTDATEONLY}     *${STD}"
    echo -e "   ${IRed}*              RPI INFO - M E N U            *${STD}"
    echo -e "   ${IRed}*          Written by MD Harrington          *${STD}"
    echo -e "   ${IRed}*                                            *${STD}"
    echo -e "   ${IRed}**********************************************${STD}"
    echo -e "   ${IGreen}1. Display pin numbers in terminal listing all${STD}"
    echo -e "   ${IPurple}2. Quck display of listing pins${STD}"
    echo -e "   ${IRed}3. Display current cpu information${STD}"
    echo -e "   ${ICyan}4. Display Model info${STD}"
    echo -e "   ${IWhite}5. Exit ${STD}"
}




# read input from the keyboard and take a action
# invoke the ShowBCMPins() when the user select 1 from the menu option.
# invoke the ShowQuickReference() when the user select 2 from the menu option.
# invoke the ShowQuickReference() when the user select 3 form the menu option.
# invoke the ShowQuickReference() when the user select 3 form the menu option.


read_options(){

    local choice
    read -p "Enter choice [ 1 - 5] " choice
    case $choice in
        1) ShowBCMPins ;;
        2) ShowQuickReference ;;
        3) DisplayCpuInfo ;;
        4) DisplayBoardInfo;;
        5) QuitMenu ;;
        *) echo -e "${RED}Error...${STD}" && sleep 2
    esac
}

# ----------------------------------------------
#  Trap CTRL+C, CTRL+Z and quit signals
# ----------------------------------------------
trap '' SIGINT SIGQUIT SIGTSTP

# -----------------------------------
# Main logic - infinite loop
# ------------------------------------
while true
do

    show_menus
    read_options
done