在ATmega328PB上，SPI0和SPI1的并行操作是可能的。这可以通过设置适当的SPI寄存器来实现。以下是一个示例代码，演示如何同时使用SPI0和SPI1进行传输：

#include

#define SS0 PB2 #define SS1 PB3

void spi0_init(void) { DDRB |= (1 << SS0) | (1 << MOSI0) | (1 << SCK0); // Set SS0, MOSI0 and SCK0 as output SPCR0 |= (1 << SPE) | (1 << MSTR) | (1 << SPR0); // Enable SPI0 in Master mode with Fosc/16 }

void spi1_init(void) { DDRB |= (1 << SS1) | (1 << MOSI1) | (1 << SCK1); // Set SS1, MOSI1 and SCK1 as output SPCR1 |= (1 << SPE) | (1 << MSTR) | (1 << SPR0); // Enable SPI1 in Master mode with Fosc/16 }

void spi0_transmit(uint8_t data) { SPDR0 = data; // Start transmitting data via SPI0 while (!(SPSR0 & (1 << SPIF))); // Wait for transmission to complete }

void spi1_transmit(uint8_t data) { SPDR1 = data; // Start transmitting data via SPI1 while (!(SPSR1 & (1 << SPIF))); // Wait for transmission to complete }

int main(void) { uint8_t data0 = 0x55; uint8_t data1 = 0xAA;

spi0_init(); spi1_init();

while (1) { PORTB &= ~(1 << SS0); // Select SS0 spi0_transmit(data0); // Transmit data via SPI0 PORTB |= (1 << SS0); // Deselect SS0

PORTB &= ~(1 << SS1); // Select SS1
spi1_transmit(data1); // Transmit data via SPI1
PORTB |= (1 << SS1);