mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-17 05:13:23 +00:00
apply suggestions from team
This commit is contained in:
+14
-12
@@ -1,6 +1,8 @@
|
||||
package apa102
|
||||
|
||||
import "machine"
|
||||
import (
|
||||
"tinygo.org/x/drivers"
|
||||
)
|
||||
|
||||
// bbSPI is a dumb bit-bang implementation of SPI protocol that is hardcoded
|
||||
// to mode 0 and ignores trying to receive data. Just enough for the APA102.
|
||||
@@ -8,17 +10,17 @@ import "machine"
|
||||
// most purposes other than the APA102 package. It might be desirable to make
|
||||
// this more generic and include it in the TinyGo "machine" package instead.
|
||||
type bbSPI struct {
|
||||
SCK machine.Pin
|
||||
SDO machine.Pin
|
||||
Delay uint32
|
||||
SCK drivers.PinOutput
|
||||
SDO drivers.PinOutput
|
||||
Delay uint32
|
||||
config func()
|
||||
}
|
||||
|
||||
// Configure sets up the SCK and SDO pins as outputs and sets them low
|
||||
func (s *bbSPI) Configure() {
|
||||
s.SCK.Configure(machine.PinConfig{Mode: machine.PinOutput})
|
||||
s.SDO.Configure(machine.PinConfig{Mode: machine.PinOutput})
|
||||
s.SCK.Low()
|
||||
s.SDO.Low()
|
||||
s.config()
|
||||
s.SCK(false)
|
||||
s.SDO(false)
|
||||
if s.Delay == 0 {
|
||||
s.Delay = 1
|
||||
}
|
||||
@@ -47,19 +49,19 @@ func (s *bbSPI) Transfer(b byte) (byte, error) {
|
||||
for i := uint8(0); i < 8; i++ {
|
||||
|
||||
// half clock cycle high to start
|
||||
s.SCK.High()
|
||||
s.SCK(true)
|
||||
s.delay()
|
||||
|
||||
// write the value to SDO (MSB first)
|
||||
if b&(1<<(7-i)) == 0 {
|
||||
s.SDO.Low()
|
||||
s.SDO(false)
|
||||
} else {
|
||||
s.SDO.High()
|
||||
s.SDO(true)
|
||||
}
|
||||
s.delay()
|
||||
|
||||
// half clock cycle low
|
||||
s.SCK.Low()
|
||||
s.SCK(false)
|
||||
s.delay()
|
||||
|
||||
// for actual SPI would try to read the SDI value here
|
||||
|
||||
Reference in New Issue
Block a user