added picotool for dumping firmware

docs/firmware/firmware-dumping.md

@@ -14,6 +14,8 @@
 
 ### Send a new firmware into the microcontroller using serial port
 
+- avrdude
+
 ```powershell
 # send raw data firmware
 $ avrdude -p m328p -c usbasp -P /dev/ttyUSB0 -b 9600 -U flash:w:flash_raw.bin
@@ -25,6 +27,13 @@ $ avrdude -c usbasp -p m328p -F -U flash:r:dump.hex:i
 $ avrdude -c usbasp -p m328p -C /etc/avrdude.conf -U flash:w:hardcodedPassword.ino.arduino_standard.hex
 ```
 
+- picotool
+
+```bash
+# extention indicates the type (bin, uf2)
+picotool load firmware.bin
+```
+
 ### Dump firmware using debug port
 
 * avrdude
@@ -51,6 +60,13 @@ exit
 sudo openocd  -f /home/maki/tools/hardware/openocd/tcl/interface/stlink-v2-1.cfg -f /home/maki/tools/hardware/openocd/tcl/target/nrf51.cfg -f dump_fw.cfg
 ```
 
+- picotool
+
+```bash
+# extention indicates the type (bin, uf2)
+picotool save firmware.bin
+```
+
 ### Convert ihex to elf
 
 > The Intel HEX is a transitional file format for microcontrollers, (E)PROMs, and other devices. The documentation states that HEXs can be converted to binary files and programmed into a configuration device.