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#243

pull/247/head
mstroh76 6 months ago
parent
commit
01ea71461b
1 changed files with 5 additions and 3 deletions
  1. +5
    -3
      wiringPi/wiringPiSPI.c

+ 5
- 3
wiringPi/wiringPiSPI.c View File

@@ -72,7 +72,6 @@ static int spiFds [7][3] =
};



int SPICheckLimits(const int number, const int channel) {
if (channel<0 || channel>=WPI_MaxSPIChannels) {
fprintf (stderr, "wiringPiSPI: Invalid SPI channel (%d, valid range 0-%d)", channel, WPI_MaxSPIChannels-1);
@@ -119,13 +118,16 @@ int wiringPiSPIGetFd(int channel) {

int wiringPiSPIxDataRW (const int number, const int channel, unsigned char *data, const int len)
{
struct spi_ioc_transfer spi ;

RETURN_ON_LIMIT_FAIL
if (-1==spiFds[number][channel]) {
fprintf (stderr, "wiringPiSPI: Invalid SPI number/channel (need wiringPiSPIxSetupMode before read/write)");
return EBADF;
}

struct spi_ioc_transfer spi ;
// Mentioned in spidev.h but not used in the original kernel documentation
// test program )-:

memset (&spi, 0, sizeof (spi)) ;

spi.tx_buf = (unsigned long)data ;


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