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spi: added spi feature for all bbb and rpi

This commit is contained in:
Kunal Powar 2014-04-28 01:18:14 +05:30
parent fdd1d6b5c3
commit 12db8443b0
7 changed files with 399 additions and 0 deletions

38
spidriver.go Normal file
View file

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package embd
import "sync"
type spiBusFactory func(byte, byte, byte, int, int, int) SPIBus
type spiDriver struct {
spiDevMinor byte
busMap map[byte]SPIBus
busMapLock sync.Mutex
spf spiBusFactory
}
func NewSPIDriver(spiDevMinor byte, sbf spiBusFactory) SPIDriver {
return &spiDriver{
spiDevMinor: spiDevMinor,
spf: sbf,
}
}
func (s *spiDriver) Bus(mode, channel byte, speed, bpw, delay int) SPIBus {
s.busMapLock.Lock()
defer s.busMapLock.Unlock()
b := s.spf(s.spiDevMinor, mode, channel, speed, bpw, delay)
s.busMap[channel] = b
return b
}
func (s *spiDriver) Close() error {
for _, b := range s.busMap {
b.Close()
}
return nil
}