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Use a jump table instead of if-then-else

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This commit is contained in:
Ethan Reesor
2020-07-12 20:41:15 -05:00
committed by Jaden Weiss
parent 19e0f4709e
commit 6ad6f14a04
1 changed files with 7 additions and 6 deletions
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src/machine/machine_nxpmk66f18.go
+7 -6
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@@ -187,17 +187,18 @@ func (p Pin) reg() (*nxp.GPIO_Type, *volatile.Register32, uint8) {
var gpio *nxp.GPIO_Type
var pcr *nxp.PORT_Type
if p < 32 {
switch p / 32 {
case 0:
gpio, pcr = nxp.GPIOA, nxp.PORTA
} else if p < 64 {
case 1:
gpio, pcr = nxp.GPIOB, nxp.PORTB
} else if p < 96 {
case 2:
gpio, pcr = nxp.GPIOC, nxp.PORTC
} else if p < 128 {
case 3:
gpio, pcr = nxp.GPIOD, nxp.PORTD
} else if p < 160 {
case 5:
gpio, pcr = nxp.GPIOE, nxp.PORTE
} else {
default:
panic("invalid pin number")
}