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@@ -72,7 +72,6 @@ static int spiFds [7][3] = |
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}; |
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int SPICheckLimits(const int number, const int channel) { |
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if (channel<0 || channel>=WPI_MaxSPIChannels) { |
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fprintf (stderr, "wiringPiSPI: Invalid SPI channel (%d, valid range 0-%d)", channel, WPI_MaxSPIChannels-1); |
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@@ -119,13 +118,16 @@ int wiringPiSPIGetFd(int channel) { |
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int wiringPiSPIxDataRW (const int number, const int channel, unsigned char *data, const int len) |
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{ |
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struct spi_ioc_transfer spi ; |
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RETURN_ON_LIMIT_FAIL |
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if (-1==spiFds[number][channel]) { |
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fprintf (stderr, "wiringPiSPI: Invalid SPI number/channel (need wiringPiSPIxSetupMode before read/write)"); |
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return EBADF; |
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} |
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struct spi_ioc_transfer spi ; |
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// Mentioned in spidev.h but not used in the original kernel documentation |
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// test program )-: |
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memset (&spi, 0, sizeof (spi)) ; |
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spi.tx_buf = (unsigned long)data ; |
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