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Change clock public api

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This commit is contained in:
Drahoslav 2017-11-14 23:16:39 +01:00
parent cdcd97f287
commit 9b13a0969b
1 changed files with 8 additions and 5 deletions
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13
rpio.go
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@ -131,10 +131,9 @@ func (pin Pin) Output() {
PinMode(pin, Output) PinMode(pin, Output)
} }
// Set pin as Clock with given freq // Set pin as Clock
func (pin Pin) Clock(freq int) { func (pin Pin) Clock() {
PinMode(pin, Clock) PinMode(pin, Clock)
SetClock(pin, freq)
} }
// Set pin High // Set pin High
@ -152,6 +151,10 @@ func (pin Pin) Toggle() {
TogglePin(pin) TogglePin(pin)
} }
func (pin Pin) Freq(freq int) {
SetFreq(pin, freq)
}
// Set pin Mode // Set pin Mode
func (pin Pin) Mode(mode Mode) { func (pin Pin) Mode(mode Mode) {
PinMode(pin, mode) PinMode(pin, mode)
@ -302,7 +305,7 @@ func PullMode(pin Pin, pull Pull) {
// Note that some pins share the same clock source, it means that // Note that some pins share the same clock source, it means that
// changing frequency for one pin will change it also for all pins within a group // changing frequency for one pin will change it also for all pins within a group
// The groups are: clk0 (4, 20, 32, 34), clk1 (5, 21, 42, 43) and clk2 (6 and 43) // The groups are: clk0 (4, 20, 32, 34), clk1 (5, 21, 42, 43) and clk2 (6 and 43)
func SetClock(pin Pin, freq int) { func SetFreq(pin Pin, freq int) {
const source = 19200000 // oscilator frequency const source = 19200000 // oscilator frequency
const maxUint12 = 4095 const maxUint12 = 4095
@ -350,7 +353,7 @@ func SetClock(pin Pin, freq int) {
func Open() (err error) { func Open() (err error) {
var file *os.File var file *os.File
// Open fd for rw mem access; try mem gpio first // Open fd for rw mem access; try gpiomem first
file, err = os.OpenFile("/dev/gpiomem", os.O_RDWR|os.O_SYNC, 0) file, err = os.OpenFile("/dev/gpiomem", os.O_RDWR|os.O_SYNC, 0)
if os.IsNotExist(err) { // try mem (need root) if os.IsNotExist(err) { // try mem (need root)
file, err = os.OpenFile("/dev/mem", os.O_RDWR|os.O_SYNC, 0) file, err = os.OpenFile("/dev/mem", os.O_RDWR|os.O_SYNC, 0)