Primus pin functions

The Primus micromouse will use the dsPIC30F4011 processor from microchip. It has plenty of power and resources for just about any micromouse and is relatively easy to get and use. Here is a list of the proposed functions for each processor pin on the controller board

dsPIC30F4011 Pin Functions for Primus
Pin Functions Primus (NOKIA LCD)
1 /MCLR reset
2 EMUD3/AN0/VREF+/CN2/RB0 left forwardsensor
3 EMUC3/AN1/VREF-/CN3/RB1 left diagonal sensor
4 AN2/SS1/CN4/RB2 left side sensor
5 AN3/INDX/CN5/RB3 right side sensor
6 AN4/QEA/IC7/CN6/RB4 UP button
7 AN5/QEB/IC8/CN7/RB5 DN button
8 AN6/OCFA/RB6 right diagonal sensor
9 AN7/RB7 right forward sensor
10 AN8/RB8 battery voltage monitor
11 VDD VDD
12 VSS VSS
13 OSC1/CLKI 8MHz resonator
14 OSC2/CLKO/RC15 8MHz resonator
15 EMUD1/SOSCI/T2CK/U1ATX/CN1/RC13 left stepper count input
16 EMUC1/SOSCO/T1CK/U1ARX/CN0/RC14 right stepper count input
17 FLTA/INT0/RE8 GO button
18 EMUD2/OC2/IC2/INT2/RD1 diagonal emitters
19 OC4/RD3 LED_A
20 VSS VSS
21 VDD VDD
22 OC3/RD2 side emitters
23 EMUC2/OC1/IC1/INT1/RD0 forward emitters
24 SCK1/RF6 LCD clock
25 PGD/EMUD/U1TX/SDO1/SCL/RF3 programmer and LCD Data
26 PGC/EMUC/U1RX/SDI1/SDA/RF2 programmer clock
27 U2TX/CN18/RF5 Serial TX
28 U2RX/CN17/RF4 Serial RX
29 C1TX/RF1 LCD command/data
30 C1RX/RF0 LCD select
31 VSS VSS
32 VDD VDD
33 PWM3H/RE5 Motor Enable
34 PWM3L/RE4 LED_B and speaker
35 PWM2H/RE3 right motor direction
36 PWM2L/RE2 right motor step
37 PWM1H/RE1 left motor direction
38 PWM1L/RE0 left motor step
39 AVSS AVSS
40 AVDD AVDD

Primus will use the Nokia LCD display from a 3410 cellphone. Note that this is not the common screen from a 3310. the 3310 screen can only do 84×48 pixels. To display the maze we need a bigger screen and the 3410 display can do 96×64 pixels. They are easy to find on the web.
You will see there are six sensor inputs but three emitter outputs. The emitters are fired in pairs to save processor pins. There is provision for three user buttons, a serial interface, the LCD and a battery monitor as well as a speaker and a couple of LED indicators.If you wanted to build Primus without the LCD then two of the buttons are probably redundant also as they are used for the menus on the mouse. The LCD is well worth the trouble and, while you may have thought of using a common 16×2 alphanumeric display, the nokia screens are cheaper, smaller, lighter and much more flexible.

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