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Revert "Allow interrupts in stm32f103xx (#1466)" as discussed in #1608

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This reverts commit 3bb994da9f.
This commit is contained in:
deadprogram
2021-02-27 10:59:40 +01:00
committed by Ayke
parent 66f76833ad
commit abc478c294
1 changed files with 5 additions and 17 deletions
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src/runtime/runtime_stm32f103.go
+5 -17
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@@ -120,9 +120,7 @@ func sleepTicks(d timeUnit) {
for d != 0 { for d != 0 {
ticks() // update timestamp ticks() // update timestamp
ticks := uint32(d) // current scaling only supports 100 usec to 6553 msec ticks := uint32(d) // current scaling only supports 100 usec to 6553 msec
if !timerSleep(ticks) { timerSleep(ticks)
return
}
d -= timeUnit(ticks) d -= timeUnit(ticks)
} }
} }
@@ -143,8 +141,7 @@ func ticks() timeUnit {
} }
// ticks are in microseconds // ticks are in microseconds
// returns false if an interrupt occured func timerSleep(ticks uint32) {
func timerSleep(ticks uint32) bool {
timerWakeup.Set(0) timerWakeup.Set(0)
// STM32 timer update event period is calculated as follows: // STM32 timer update event period is calculated as follows:
@@ -191,19 +188,10 @@ func timerSleep(ticks uint32) bool {
// Enable the timer. // Enable the timer.
stm32.TIM3.CR1.SetBits(stm32.TIM_CR1_CEN) stm32.TIM3.CR1.SetBits(stm32.TIM_CR1_CEN)
wait: // wait till timer wakes up
arm.Asm("wfi") for timerWakeup.Get() == 0 {
if timerWakeup.Get() != 0 { arm.Asm("wfi")
return true
} }
if hasScheduler {
return false
} else {
// keep looping until the routine exits or is interrupted
goto wait
}
} }
func handleTIM3(interrupt.Interrupt) { func handleTIM3(interrupt.Interrupt) {