Qt shows error

[Rameshwar]

Run the following code then this error shows :The program has unexpectedly finished.
void MainWindow::on_Tx_clicked()
{
bcm2835_spi_begin();
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0,0);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS1,0);
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_128);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE3);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0);

    uint8_t data;
        data = bcm2835_spi_transfer((uint8_t)0x55);
        ui->textBrowser->setText(QString::number(data));

}

[aha_1980]

@Rameshwar said in Qt shows error:

The program has unexpectedly finished.

Use a debugger and find out where it crashes. Most likely you are de-referencing an uninitialized or no longer valid pointer.

Regards

[Rameshwar]

@aha_1980
Ok, Thank you

[Rameshwar]

When run the above code then it displays "process killed by signal". how to solve it, please help me.

[Andrew_moton]

Check return value from bcm2835_spi_begin() function;
Maybe 0...