RPIZeroDuplexPOCSAG/rfm69
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SPI Device with cgo

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This commit is contained in:
Friedl Ulrich 2015-02-05 21:59:36 +01:00
parent 67daba17ef
commit ea4fca9a65
1 changed files with 1 additions and 1 deletions
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2
rfm69spi.go
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@ -107,7 +107,7 @@ func NewSPIDevice() (*SPIDevice, error) {
func (d *SPIDevice) Xfer(tx []byte) ([]byte, error) {
length := len(tx)
rx := make([]byte, length)
ret := C.spi_xfer(d.fd, unsafe.Pointer(&tx[0]), unsafe.Pointer(&rx[0]), C.int(length))
ret := C.spi_xfer(d.fd, (*C.char)(unsafe.Pointer(&tx[0])), (*C.char)(unsafe.Pointer(&rx[0])), C.int(length))
if ret < 0 {
return nil, errors.New("could not xfer")
}