New make target to program fuses bits

Also includes:
* Corresponding documentation update

Author: coderarjob

README.md

@@ -84,17 +84,30 @@ and developed.
 
 ### Firmware
 
-```
+Build the firmware using the following command. Firmware binary is the `./out/firmware.hex` file.
+
+```bash
 BUILD_DIR=out make
 ```
 
-Firmware is the `./out/firmware.hex` file. To program micro with avrdude, we can do `make program`.
+To program using avrdude we run the following command.
+
+```bash
+make program
+```
+
+When programming a new microcontroller, we also need to program the required fuse bits. This can be
+using the following command
+
+```bash
+make program_fuses
+```
 
 ### Unittests
 
 We can build every unittests and run them using the `run` target.
 
-```
+```bash
 BUILD=ut BUILD_DIR=out/ut make run
 ```
 

build/fw/avrdude.mk

@@ -1,7 +1,10 @@
 program: $(firmware_BIN)
 	avrdude -c usbasp -p m8a -U flash:w:"$^":i
 
+program_fuses:
+	avrdude -c usbasp -p m8a -U lfuse:w:0xff:m -U hfuse:w:0xc9:m
+
 reset:
 	avrdude -c usbasp -p m8a -U signature:r:-:h
 
-.PHONY: program reset
+.PHONY: program reset program_fuses