This document outlines the pin interface between hardware and software for the Mazda MX-5 LED Gear Display. It defines the purpose, value ranges, and behavior of each pin.
| Pin Number | Function | Value Range | Description |
|---|---|---|---|
| A0 | Left Sensor | 0 to 1023 (int) | Reads analog values for the left hall sensor, used for gear detection. |
| A1 | Top Sensor | 0 to 1023 (int) | Reads analog values for the top hall sensor, used for gear detection. |
| A2 | Right Sensor | 0 to 1023 (int) | Reads analog values for the right hall sensor, used for gear detection. |
| A3 | Bottom Sensor | 0 to 1023 (int) | Reads analog values for the bottom hall sensor, used for gear detection. |
| D2 | LED Control 1 | 0 or 1 (digital) | Controls the LED display for first gear. 0: Off, 1: On. |
| D3 | LED Control 2 | 0 or 1 (digital) | Controls the LED display for second gear. 0: Off, 1: On. |
| D4 | Calibration Pin | 0 or 1 (digital) | Triggers calibration mode. 1: Calibration active, 0: Calibration inactive. |
- Analog Sensor Pins (A0-A3): These pins read integer values ranging from 0 to 1023, which represent the signals from the hall sensors for gear detection.
- Digital Control Pins (D2-D4): These pins control binary states (0 or 1) for simple on/off behavior, such as activating LEDs or triggering calibration mode.