The firmware execution starts with the initialization of the microcontroller
and its peripherals. The Phase Sequence Detector application uses microcontroller
peripherals such as SPI, TIMER, UART, ADC, Digital I/O, VREF, and ZCD. The system is
initialized in the following configurations:
Table 6-1. Microcontroller Peripherals
Configurations| Peripherals | SPI 0 | USART 1 | ADC | TCA0 | TCA1 | VREF | ZCD 0 and ZCD 1 |
|---|
| Configurations | SPI Clock (6 MHz) | Baud Rate (230400) | Resolution (12 bits) | TIMER Clock (3 MHz) | TIMER Clock (3 MHz) | Enable reference voltage (ADC) | ZCD enable |
| SPI Master mode | Parity bit (0) | ADC Clock (System Clock / 12) | TIMER Mode (Normal) | TIMER Mode (Normal) | Reference Voltage (VDD) | ZCD Interrupt (Rising Edge) |
| Data Mode 2 | Stop bit (1) | ADC Mode (Differential) | TIMER Period (0xFFFF) | TIMER Period (0x5EC) | — | — |
