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README.md

ChronometerTimer1SOSC

Description

Display a chronometer in LCD by using Timer1 Interrupt and SOSC as clock source, change notification interrupt on S3 to start/reset the chronometer. Precision 1/32s.

Usage

  • Set up the Developmnent Board:
    • Unplug the 9V power supply and the programmer from the development board.
    • Plug PIM to the development board.
    • Set switch S2 to PIM position.
    • Install the jumper JP2 to enable the LEDs.
    • Plug the 9V power supply and the programmer to the development board.
  • Set up the project:
    • Open MPLAB X IDE.
    • Select "File -> Open Project..." from the MPLAB X IDE menu.
    • Select the project and click on "Open Project"
    • Right click on project name, select "Set configuration" and select the installed PIM.
  • Run the project:
    • Right click on project name, select "Run"

Pinout

Indicator LEDs
LED dsPIC33FJ256GP710A PIC24FJ128GA010 Overlaps with U I
D3 RA0 RA0 x
D4 RA1 RA1 x
D5 RA2 RA2 x
D6 RA3 RA3 x
D7 RA4 RA4 x
D8 RA5 RA5 x
D9 RA6 RA6 x x
D10 RA7 RA7 S5 x x

U: Used, I: Implemented

Push button switches + Change notification
Push button switch dsPIC33FJ256GP710A PIC24FJ128GA010 Overlaps with U I
S3: Active-low switch CN15/RD6 CN15/RD6 x x
S4: Active-low switch CN19/RD13 CN19/RD13 x
S5: Active-low switch CN23/RA7 -/RA7 D10 x/-
S6: Active-low switch CN16/RD7 CN16/RD7 x

U: Used, I: Implemented

16x2 LCD Display
LCD dsPIC33FJ256GP710A PIC24FJ128GA010 Overlaps with U I
E RD4 PMWR x x
R/W RD5 PMRD x x
RS RB15 PMAO x x
DB0 RE0 PMD0 x x
DB1 RE1 PMD1 x x
DB2 RE2 PMD2 x x
DB3 RE3 PMD3 x x
DB4 RE4 PMD4 x x
DB5 RE5 PMD5 x x
DB6 RE6 PMD6 x x
DB7 RE7 PMD7 x x

U: Used, I: Implemented

ADC
Analog Input dsPIC33FJ256GP710A PIC24FJ128GA010 Overlaps with U I
Potentiometer AN5/RB5 AN5/RB5
Temperature sensor AN4/RB4 AN4/RB4

U: Used, I: Implemented

Oscillators
Oscillator dsPIC33FJ256GP710A PIC24FJ128GA010 Overlaps with U I
Primary: 8 MHz crystal (Y3) OSC1/RC12 OSC1/RC12 x x
Primary: 8 MHz crystal (Y3) OSC2/RC15 OSC2/RC15 x x
Secondary: 32.768 kHz (Y2) SOSCI/RC13 SOSCI/RC13 x x
Secondary: 32.768 kHz (Y2) SOSCO/RC14 SOSCO/RC14 x x

U: Used, I: Implemented

MPLAB ICD programmer/debugger module
ICD Pin dsPIC33FJ256GP710A PIC24FJ128GA010 Overlaps with U I
Vpp/!MCLR !MCLR !MCLR x x
PGD PGED1/RB7 PGED1/RB7 x x
PGC PGEC1/RB6 PGEC1/RB6 x x

U: Used, I: Implemented