#!/bin/bash
set -o nounset                              # Treat unset variables as an error
STM32CP_CLI=STM32_Programmer_CLI
ADDRESS=0x8000000
ERASE=
MODE=
PORT=
OPTS=

###############################################################################
## Help function
usage()
{
  echo "############################################################"
  echo "##"
  echo "## `basename $0` <protocol> <file_path> [OPTIONS]"
  echo "##"
  echo "## protocol: "
  echo "##   0: SWD"
  echo "##   1: Serial"
  echo "##   2: DFU"
  echo "##   Note: prefix it by 1 to erase all sectors."
  echo "##         Ex: 10 erase all sectors using SWD interface."
  echo "## file_path: file path name to be downloaded: (bin, hex)"
  echo "## Options:"
  echo "##   For SWD and DFU: no mandatory options"
  echo "##   For Serial: <com_port>"
  echo "##     com_port: serial identifier (mandatory). Ex: /dev/ttyS0"
  echo "##"
  echo "## Note: all trailing arguments will be passed to the $STM32CP_CLI"
  echo "##   They have to be valid commands for STM32 MCU"
  echo "##   Ex: -g: Run the code at the specified address"
  echo "##       -rst: Reset system"
  echo "##       -s: start automatically (optional)"
  echo "############################################################"
  exit $1
}


check_tool() {
  command -v $STM32CP_CLI >/dev/null 2>&1
  if [ $? != 0 ]; then
    export PATH="/Applications/STMicroelectronics/STM32Cube/STM32CubeProgrammer/STM32CubeProgrammer.app/Contents/MacOs/bin":$PATH
  fi
  command -v $STM32CP_CLI >/dev/null 2>&1
  if [ $? != 0 ]; then
    echo "$STM32CP_CLI not found."
    echo "Please install it or add '<STM32CubeProgrammer path>/bin' to your PATH environment:"
    echo "https://www.st.com/en/development-tools/stm32cubeprog.html"
    echo "Aborting!"
    exit 1
  fi
}

check_tool

if [ $# -lt 2 ]; then
    echo "Not enough arguments!"
    usage 2
fi

# Parse options
PROTOCOL=$1
FILEPATH=$2
# Protocol $1
# 1x: Erase all sectors
if [ $1 -ge 10 ]; then
  ERASE='-e all'
  PROTOCOL=$(($1 - 10))
fi
# Protocol $1
# 0: SWD
# 1: Serial
# 2: DFU
case $PROTOCOL in

  0)
    PORT='SWD'
    MODE='mode=UR'
    shift 2;;
  1)
    if [ $# -lt 3 ]; then
      usage 3
    else
      PORT=$3
      shift 3
    fi;;
  2)
    PORT='USB1'
    shift 2;;
  *)
    echo "Protocol unknown!"
    usage 4;;
esac

if [ $# -gt 0 ]; then
  OPTS="$@"
fi

${STM32CP_CLI} -c port=${PORT} ${MODE} ${ERASE} -q -d ${FILEPATH} ${ADDRESS} ${OPTS}

exit 0