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stm32: support pin input interrupts

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This commit is contained in:
Kenneth Bell
2021-05-31 17:45:49 -07:00
committed by Ron Evans
parent c017ed2242
commit 5f9e339cf3
16 changed files with 527 additions and 0 deletions
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src/machine/machine_stm32l0.go
+42
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@@ -6,6 +6,7 @@ package machine
import (
"device/stm32"
"runtime/interrupt"
)
func CPUFrequency() uint32 {
@@ -147,6 +148,47 @@ func (p Pin) enableClock() {
}
}
func (p Pin) registerInterrupt() interrupt.Interrupt {
pin := uint8(p) % 16
switch pin {
case 0:
return interrupt.New(stm32.IRQ_EXTI0_1, func(interrupt.Interrupt) { handlePinInterrupt(0) })
case 1:
return interrupt.New(stm32.IRQ_EXTI0_1, func(interrupt.Interrupt) { handlePinInterrupt(1) })
case 2:
return interrupt.New(stm32.IRQ_EXTI2_3, func(interrupt.Interrupt) { handlePinInterrupt(2) })
case 3:
return interrupt.New(stm32.IRQ_EXTI2_3, func(interrupt.Interrupt) { handlePinInterrupt(3) })
case 4:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(4) })
case 5:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(5) })
case 6:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(6) })
case 7:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(7) })
case 8:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(8) })
case 9:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(9) })
case 10:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(10) })
case 11:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(11) })
case 12:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(12) })
case 13:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(13) })
case 14:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(14) })
case 15:
return interrupt.New(stm32.IRQ_EXTI4_15, func(interrupt.Interrupt) { handlePinInterrupt(15) })
}
return interrupt.Interrupt{}
}
//---------- UART related types and code
// Configure the UART.