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Code Issues Releases Wiki Activity

spi: finishing touches

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This commit is contained in:
kunalpowar 2014-05-22 02:19:01 +05:30
parent 0f23150374
commit 67d316851a
7 changed files with 49 additions and 45 deletions
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1
host/bbb/bbb.go
View file

@ -16,7 +16,6 @@ import (
"strings"
"github.com/golang/glog"
"github.com/kidoman/embd"
"github.com/kidoman/embd/host/generic"
)

31
host/generic/spibus.go
View file

@ -129,11 +129,9 @@ func (b *spiBus) setMode() error {
}
func (b *spiBus) setSpeed() error {
var speed uint32
speed := defaultSPISpeed
if b.speed > 0 {
speed = uint32(b.speed)
} else {
speed = defaultSPISpeed
}
glog.V(3).Infof("spi: setting spi speedMax to %v", speed)
@ -150,12 +148,9 @@ func (b *spiBus) setSpeed() error {
}
func (b *spiBus) setBPW() error {
var bpw uint8
bpw := defaultSPIBPW
if b.bpw > 0 {
bpw = uint8(b.bpw)
} else {
bpw = defaultSPIBPW
}
glog.V(3).Infof("spi: setting spi bpw to %v", bpw)
@ -171,13 +166,11 @@ func (b *spiBus) setBPW() error {
}
func (b *spiBus) setDelay() {
var delay uint16
delay := defaultDelayms
if b.delayms > 0 {
delay = uint16(b.delayms)
} else {
delay = defaultDelayms
}
glog.V(3).Infof("spi: delayms set to %v", delay)
b.spiTransferData.delayus = delay
}
@ -210,11 +203,11 @@ func (b *spiBus) ReceiveData(len int) ([]uint8, error) {
return nil, err
}
data := make([]uint8, len)
if err := b.TransferAndRecieveData(data); err != nil {
var data [len]uint8
if err := b.TransferAndRecieveData(data[:]); err != nil {
return nil, err
}
return data, nil
return data[:], nil
}
func (b *spiBus) TransferAndReceiveByte(data byte) (byte, error) {
@ -222,9 +215,8 @@ func (b *spiBus) TransferAndReceiveByte(data byte) (byte, error) {
return 0, err
}
d := make([]uint8, 1)
d[0] = uint8(data)
if err := b.TransferAndRecieveData(d); err != nil {
d := [1]uint8{uint8(data)}
if err := b.TransferAndRecieveData(d[:]); err != nil {
return 0, err
}
return d[0], nil
@ -235,9 +227,8 @@ func (b *spiBus) ReceiveByte() (byte, error) {
return 0, err
}
d := make([]uint8, 1)
err := b.TransferAndRecieveData(d)
if err != nil {
var d [1]uint8
if err := b.TransferAndRecieveData(d[:]); err != nil {
return 0, err
}
return byte(d[0]), nil