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Fix divf computation

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This commit is contained in:
Drahoslav 2017-11-15 11:26:49 +01:00
parent 9b13a0969b
commit 0122f1902d
1 changed files with 3 additions and 2 deletions
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5
rpio.go
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@ -191,7 +191,8 @@ func (pin Pin) PullOff() {
} }
// PinMode sets the mode (direction) of a given pin (Input, Output or Clock) // PinMode sets the mode (direction) of a given pin (Input, Output or Clock)
// Clock is possible only for some pins (bcm 4, 5, 6) //
// Clock is possible only for some pins (bcm 4, 5, 6, 20, 21)
func PinMode(pin Pin, mode Mode) { func PinMode(pin Pin, mode Mode) {
// Pin fsel register, 0 or 1 depending on bank // Pin fsel register, 0 or 1 depending on bank
@ -310,7 +311,7 @@ func SetFreq(pin Pin, freq int) {
const maxUint12 = 4095 const maxUint12 = 4095
divi := uint32(source / freq) divi := uint32(source / freq)
divf := uint32(((source % freq) << 12) / source) divf := uint32(((source % freq) << 12) / freq)
divi &= maxUint12 divi &= maxUint12
divf &= maxUint12 divf &= maxUint12