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SPI data transfer routines
Function Documentation
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U2C_RESULT U2C_SpiRead (
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HANDLE hDevice,
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BYTE * pInBuffer,
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unsigned short Length )
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Shift in byte stream.
The U2C_SpiRead function shifts in (reads) a stream of bytes from the SPI slave device -
Parameters:
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| hDevice
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Handle to the I2CBridge device |
| pInBuffer
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Pointer to the buffer that receives the data shifted in from the SPI slave device |
| Length
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Number of bytes to be shifted in |
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Returns:
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- U2C_SUCCESS - The data was successfully read.
- U2C_HARDWARE_NOT_FOUND - I2CBridge device referenced by hDevice handle was not found
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U2C_RESULT U2C_SpiReadWrite (
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HANDLE hDevice,
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BYTE * pOutBuffer,
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BYTE * pInBuffer,
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unsigned short Length )
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Shift in/out byte stream.
The U2C_SpiReadWrite function shifts out (writes) and in (reads) a stream of bytes to/from the SPI slave device -
Parameters:
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| hDevice
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Handle to the I2CBridge device |
| pOutBuffer
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Pointer to the buffer containing the data to be shifted out to the slave SPI device |
| pInBuffer
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Pointer to the buffer that receives the data shifted in from the slave SPI device |
| Length
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Number of bytes to be transferred via SPI bus |
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Returns:
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- U2C_SUCCESS - The data was successfully transmitted via SPI bus.
- U2C_HARDWARE_NOT_FOUND - I2CBridge device referenced by hDevice handle was not found
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U2C_RESULT U2C_SpiWrite (
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HANDLE hDevice,
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BYTE * pOutBuffer,
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unsigned short Length )
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Shift out byte stream.
The U2C_SpiWrite function shifts out (writes) a stream of bytes to the SPI slave device. -
Parameters:
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| hDevice
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Handle to the I2CBridge device |
| pOutBuffer
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Pointer to the buffer containing the data to be shifted out to the slave SPI device |
| Length
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Number of bytes to be shifted out to the slave SPI device |
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Returns:
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- U2C_SUCCESS - The data was successfully written.
- U2C_HARDWARE_NOT_FOUND - I2CBridge device referenced by hDevice handle was not found
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