Question

我正在尝试使用C在ATMEGA328上配置ADC，然后进入以下一行：

FILE usart0_str = FDEV_SETUP_STREAM(USART0SendByte, NULL, _FDEV_SETUP_WRITE);

以下错误：

sorry, unimplemented: non-trivial designated initializers not supported FILE usart0_str = FDEV_SETUP_STREAM(USART0SendByte, NULL, _FDEV_SETUP_WRITE); ^

我真的不理解该错误，我尝试在Google上搜索该错误，但未发现与此类似的错误，并且我确信这种情况会发生，因为我不理解此错误。

这是整个代码：

#ifndef F_CPU
#define F_CPU 16000000UL
#endif

#include <stdio.h>
#include <avr/io.h>
#include <util/delay.h>
#define USART_BAUDRATE 9600
#define UBRR_VALUE ( ( ( F_CPU / ( USART_BAUDRATE * 16UL ) ) ) - 1 )
#define VREF 5
#define POT 10000

void initADC( void );
uint16_t readADC( uint8_t ADCchannel );
void USART0Init(void);
int USART0SendByte( char u8Data, FILE *stream );
void setUpLED ( void );

FILE usart0_str = FDEV_SETUP_STREAM( USART0SendByte, NULL, _FDEV_SETUP_WRITE );

int main( void )
{
    double vbg, potval;

    initADC();
    USART0Init();

    stdout = &usart0_str;
    setUpLED ();

    while ( 1 )
    {
        potval = (double)POT / 1024 * readADC(0);
        printf("Potentiometer value = %u Ohm\n", (uint16_t)potval);

        vbg = (double)VREF / 1024 * readADC(14);
        printf("Vbg = %4.2fV\n", vbg);

        _delay_ms(1000);
    }
}

void setUpLED ( void )
{
    DDRB  |= ( 1 << PB0 );
    PORTB |= ( 1 << PB0 );
}

void initADC( void )
{
    ADMUX  |= ( 1 << REFS0 );
    ADCSRA |= ( 1 << ADPS2 ) | ( 1 << ADPS1 ) | ( 1 << ADPS0 ); ///16000000/128=125kHz
    ADCSRA |= ( 1 << ADEN );
}

uint16_t readADC( uint8_t ADCchannel )
{
    ADMUX = ( ADMUX & 0xF0 ) | ( ADCchannel & 0x0F );
    ADCSRA |= ( 1 << ADSC );
    while ( ADCSRA & ( 1 << ADSC ) );
    return ADC;
}

int USART0SendByte( char u8Data, FILE *stream )
{
    if ( u8Data == '\n' )
    {
        USART0SendByte( '\r', stream );
    }

    while ( !( UCSR0A & ( 1 << UDRE0 ) ) ) { };
    UDR0 = u8Data;
    return 0;
}

void USART0Init(void)
{
    UBRR0H = (uint8_t)(UBRR_VALUE >> 8);
    UBRR0L = (uint8_t)UBRR_VALUE;

    UCSR0C |= (1 << UCSZ01) | (1 << UCSZ00);
    UCSR0B |= (1 << RXEN0) | (1 << TXEN0);
}`

如果我使用codeblocks进行编译，则一切正常，但我使用arduino板作为程序员，也使用arduino IDE。

为什么会出现此错误？

抱歉，未实现：不支持非平凡的指定初始值设定项

0 个答案: