Updated stlink_upload script for Linux to enhanced code from @ahull

Author: rogerclarkmelbourne

tools/linux/serial_upload

@@ -1,2 +1,45 @@
 #!/bin/bash
-$(dirname $0)/stm32flash/stm32flash -g 0x8000000 -b 230400 -w "$4" /dev/"$1" 
+
+# Check for leaf device.
+function leaf_status()
+{
+
+this_leaf_status=$(lsusb |grep "1eaf" | awk '{ print $NF}')
+# Find the mode of the leaf bootloader
+case $this_leaf_status in
+   "1eaf:0003")
+      echo "dfu"
+   ;;
+   "1eaf:0004")
+      echo "ttyACMx"
+   ;;
+   *)
+      #echo "$this_leaf_status"
+      echo "unknown"
+   ;;
+esac
+}
+
+# You will need the usb-reset code, see https://github.com/rogerclarkmelbourne/Arduino_STM32/wiki/Using-a-generic-stm32-board-on-linux-with-Maple-bootloader
+#
+USBRESET=$(which usb-reset) || USBRESET="./usb-reset"
+
+# Check to see if a maple compatible board is attached
+LEAF_STATUS=$(leaf_status)
+echo "USB Status [$LEAF_STATUS]"
+
+$(dirname $0)/stlink/st-flash write "$4" 0x8000000
+
+sleep 4
+# Reset the usb device to bring up the tty rather than DFU
+"$USBRESET" "/dev/bus/usb/$(lsusb |grep "1eaf" |awk '{print $2,$4}'|sed 's/\://g'|sed 's/ /\//g')" >/dev/null 2>&1
+# Check to see if a maple compatible board is attached
+LEAF_STATUS=$(leaf_status)
+echo "USB Status [$LEAF_STATUS]"
+# Check to see if the tty came up
+TTY_DEV=$(find /dev -cmin -2 |grep ttyAC)
+echo -e "Waiting for tty device $TTY_DEV \n"
+sleep 20
+echo -e "$TTY_DEV should now be available.\n"
+exit 0
+