IEEE 802.15.4 subsystem
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| 1 | /* |
| 2 | * cntr/cntr.h - CNTR global variables |
| 3 | * |
| 4 | * Written 2010 by Werner Almesberger |
| 5 | * Copyright 2010 Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | #ifndef CNTR_H |
| 14 | #define CNTR_H |
| 15 | |
| 16 | /* |
| 17 | * Free-running 32 bit counter. The lower two bytes are from hardware Timer 0. |
| 18 | * The upper two bytes are maintained by software. At the maximum input clock |
| 19 | * frequency of 6 MHz, it wraps around every 11.9 minutes, leaving the host |
| 20 | * plenty of time to read it. |
| 21 | */ |
| 22 | |
| 23 | extern uint8_t cntr[4]; |
| 24 | |
| 25 | extern enum hw_type { |
| 26 | HW_TYPE_V1 = 0, |
| 27 | HW_TYPE_V2 = 1, |
| 28 | HW_TYPE_V3 = 2, |
| 29 | } hw_type; |
| 30 | |
| 31 | #endif /* !CNTR_H */ |
| 32 |
