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Better STM32 Tone timer int priority (#18385)

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This commit is contained in:
Jason Smith
2020-06-22 13:30:45 -07:00
committed by GitHub
parent 819e48972d
commit e52afa8b19
2 changed files with 10 additions and 0 deletions
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9
Marlin/src/HAL/STM32/timers.cpp
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@ -36,6 +36,15 @@
#define TEMP_TIMER_IRQ_PRIO 14 // 14 = after hardware ISRs
#endif
// Ensure the default timer priority is somewhere between the STEP and TEMP priorities.
// The STM32 framework defaults to interrupt 14 for all timers. This should be increased so that
// timing-sensitive operations such as speaker output are note impacted by the long-running
// temperature ISR. This must be defined in the platformio.ini file or the board's variant.h,
// so that it will be consumed by framework code.
#if !(TIM_IRQ_PRIO > STEP_TIMER_IRQ_PRIO && TIM_IRQ_PRIO < TEMP_TIMER_IRQ_PRIO)
#error "Default timer interrupt priority is unspecified or set to a value which may degrade performance."
#endif
#if HAS_TMC_SW_SERIAL
#include <SoftwareSerial.h>
#ifndef SWSERIAL_TIMER_IRQ_PRIO