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machine/esp32c3: clear GPIO STATUS before dispatching pin callbacks

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Move STATUS_W1TC clear to before the callback loop so that new GPIO
events arriving during handler execution generate a fresh edge on the
CPU interrupt line and are not lost. Matches the same fix applied to
ESP32-S3.

Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram
2026-04-18 15:47:23 +02:00
committed by Ron Evans
parent a4dd38de81
commit 889911d0a6
1 changed files with 2 additions and 2 deletions
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src/machine/machine_esp32c3.go
+2 -2
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@@ -261,13 +261,13 @@ func setupPinInterrupt() error {
esp.INTERRUPT_CORE0.GPIO_INTERRUPT_PRO_MAP.Set(cpuInterruptFromPin) esp.INTERRUPT_CORE0.GPIO_INTERRUPT_PRO_MAP.Set(cpuInterruptFromPin)
return interrupt.New(cpuInterruptFromPin, func(interrupt.Interrupt) { return interrupt.New(cpuInterruptFromPin, func(interrupt.Interrupt) {
status := esp.GPIO.STATUS.Get() status := esp.GPIO.STATUS.Get()
// Clear before processing so new edges during callbacks are not lost.
esp.GPIO.STATUS_W1TC.SetBits(status)
for i, mask := 0, uint32(1); i < maxPin; i, mask = i+1, mask<<1 { for i, mask := 0, uint32(1); i < maxPin; i, mask = i+1, mask<<1 {
if (status&mask) != 0 && pinCallbacks[i] != nil { if (status&mask) != 0 && pinCallbacks[i] != nil {
pinCallbacks[i](Pin(i)) pinCallbacks[i](Pin(i))
} }
} }
// clear interrupt bit
esp.GPIO.STATUS_W1TC.SetBits(status)
}).Enable() }).Enable()
} }