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teensy4/delay.c
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| //volatile uint32_t F_BUS = 132000000; | //volatile uint32_t F_BUS = 132000000; | ||||
| volatile uint32_t systick_millis_count = 0; | volatile uint32_t systick_millis_count = 0; | ||||
| volatile uint32_t systick_cycle_count = 0; | volatile uint32_t systick_cycle_count = 0; | ||||
| volatile uint32_t systick_safe_read; // micros() synchronization | |||||
| uint32_t systick_safe_read; // micros() synchronization | |||||
| // page 411 says "24 MHz XTALOSC can be the external clock source of SYSTICK" | // page 411 says "24 MHz XTALOSC can be the external clock source of SYSTICK" | ||||
| // Testing shows the frequency is actually 100 kHz - but how? Did NXP really | // Testing shows the frequency is actually 100 kHz - but how? Did NXP really |
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