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dpgeorgedpgeorge
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stmhal: Add "quiet timing" enter/exit functions.
They disable all interrupts except for SysTick and are useful for doing certain low-level timing operations.
1 parent eeaab18 commit 8ed7155

2 files changed

Lines changed: 8 additions & 1 deletion

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‎stmhal/irq.h‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -24,6 +24,9 @@
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_STMHAL_IRQ_H
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#define MICROPY_INCLUDED_STMHAL_IRQ_H
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// these states correspond to values from query_irq, enable_irq and disable_irq
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#define IRQ_STATE_DISABLED (0x00000001)
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#define IRQ_STATE_ENABLED (0x00000000)
@@ -147,4 +150,4 @@ MP_DECLARE_CONST_FUN_OBJ_0(pyb_irq_stats_obj);
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#define IRQ_PRI_RTC_WKUP 15
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#define IRQ_SUBPRI_RTC_WKUP 0
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#endif // MICROPY_INCLUDED_STMHAL_IRQ_H

‎stmhal/mphalport.h‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -27,6 +27,10 @@ void mp_hal_set_interrupt_char(int c); // -1 to disable
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// timing functions
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#include "stmhal/irq.h"
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#define mp_hal_quiet_timing_enter() raise_irq_pri(1)
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#define mp_hal_quiet_timing_exit(irq_state) restore_irq_pri(irq_state)
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#define mp_hal_delay_us_fast(us) mp_hal_delay_us(us)
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extern bool mp_hal_ticks_cpu_enabled;

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