mirror of
				https://github.com/espressif/esp-idf.git
				synced 2025-10-30 20:51:41 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			23 lines
		
	
	
		
			471 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			471 B
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
 | |
|  * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
 | |
|  *
 | |
|  * SPDX-License-Identifier: Apache-2.0
 | |
|  */
 | |
| 
 | |
| #include "esp_private/systimer.h"
 | |
| 
 | |
| /**
 | |
|  * @brief systimer's clock source is fixed to XTAL (40MHz), and has a fixed fractional divider (2.5).
 | |
|  *        So the resolution of the systimer is 40MHz/2.5 = 16MHz.
 | |
|  */
 | |
| 
 | |
| uint64_t systimer_ticks_to_us(uint64_t ticks)
 | |
| {
 | |
|     return ticks / 16;
 | |
| }
 | |
| 
 | |
| uint64_t systimer_us_to_ticks(uint64_t us)
 | |
| {
 | |
|     return us * 16;
 | |
| }
 | 
