kopia lustrzana https://github.com/micropython/micropython
46 wiersze
1.7 KiB
C
46 wiersze
1.7 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2019, Michael Neuling, IBM Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#define mftb() ({unsigned long rval; \
|
|
__asm__ volatile ("mftb %0" : "=r" (rval)); rval;})
|
|
|
|
#define TBFREQ 512000000
|
|
|
|
static inline mp_uint_t mp_hal_ticks_ms(void) {
|
|
unsigned long tb = mftb();
|
|
|
|
return tb * 1000 / TBFREQ;
|
|
}
|
|
|
|
static inline mp_uint_t mp_hal_ticks_us(void) {
|
|
unsigned long tb = mftb();
|
|
|
|
return tb * 1000000 / TBFREQ;
|
|
}
|
|
|
|
static inline void mp_hal_set_interrupt_char(char c) {
|
|
}
|