This program will emulate a Digital Voltmeter using the MSP432 as the microcontroller unit (MCU). Additionally, the system uses the Analog to Digital Converter (ADC) peripheral with a 14-bit resolution to ensure precise readings. The Digital Voltmeter reads an analog input and converts into a voltage reading, which is displayed onto an Liquid Crystal Display (LCD). The software will be sampling every 100ms (10 Hz) and update the LCD with a 98% accuracy.
- Texas Instrument
| MSP432 Pins | LCD Pin | Description |
|---|---|---|
GND, 10k Potentiometer Output (V±) |
1 | GND |
VCC, 10k Potentiometer Output (V±) |
2 | VCC |
| 10k Potentiometer Output (Vo) | 3 | Contrast |
P4.5 |
4 | RS (Register Select): 0 – Command, 1 - Data |
GND |
5 | R/W (Read/Write): 0 – Write, 1 - Read |
4.4 |
6 | Clock Enable |
NC |
7 | Data 0 |
NC |
8 | Data 1 |
NC |
9 | Data 2 |
NC |
10 | Data 3 |
P4.0 |
11 | Data 4 |
P4.1 |
12 | Data 5 |
P4.2 |
13 | Data 6 |
P4.3 |
14 | Data 7 |
100Ω to VCC |
15 | Backlight Anode (+) |
GND |
16 | Backlight Cathode (-) |
- LCD Pinout Configuration
| Function | Description |
|---|---|
| lcdInit(); | Initialize LCD Display |
| lcdClear(); | Clear the LCD Display of characters |
| lcdSetText(string, c, r); | Print a string/character starting at c, column and r, row |
| lcdSetInt(integer, c, r); | Print a integer starting at c, column and r, row. |
| delay_ms(x); | Delay for x milliseconds. |
- Jorge Minjares ⚡
- Bachelor of Science in Electrical Engineering