What is the resolution of the display? What is the size of the characters you want to achieve? Start by drawing a picture of how you want it to look like (considering requirements and your hardware - the dot matrices assembly). Post a circuit diagram of your hardware and the drawing of what you want to get as a result.
You would write or find a library vs having to custom code each over and over..
Doesn't seem to be one out there though but as there are thousands of Indian programmers one might exist already that may be used/modified.