Add DSB before return from interrupts from attachInterrupt

PaulStoffregen · Jan 16, 2024 · 682e444 · 682e444
1 parent 5bccb1b
commit 682e444
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/teensy4/interrupt.c b/teensy4/interrupt.c
@@ -50,6 +50,7 @@ void irq_gpio6789(void)
 	irq_anyport(&GPIO7_DR, isr_table_gpio2);
 	irq_anyport(&GPIO8_DR, isr_table_gpio3);
 	irq_anyport(&GPIO9_DR, isr_table_gpio4);
+	asm volatile ("dsb":::"memory");
 }
 
 #endif