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SCB_SHPR3 = 0x20000000; // Systick = priority 32

teensy4-core
Frank 5 years ago
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4317a52591
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      teensy4/startup.c

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teensy4/startup.c View File

@@ -119,6 +119,7 @@ static void configure_systick(void)
SYST_RVR = (SYSTICK_EXT_FREQ / 1000) - 1;
SYST_CVR = 0;
SYST_CSR = SYST_CSR_TICKINT | SYST_CSR_ENABLE;
SCB_SHPR3 = 0x20000000; // Systick = priority 32
ARM_DEMCR |= ARM_DEMCR_TRCENA;
ARM_DWT_CTRL |= ARM_DWT_CTRL_CYCCNTENA; // turn on cycle counter
}

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