utils.h

00001 /*
00002   Plastic Logic EPD project on MSP430
00003 
00004   Copyright (C) 2013 Plastic Logic Limited
00005 
00006   This program is free software: you can redistribute it and/or modify
00007   it under the terms of the GNU General Public License as published by
00008   the Free Software Foundation, either version 3 of the License, or
00009   (at your option) any later version.
00010 
00011   This program is distributed in the hope that it will be useful,
00012   but WITHOUT ANY WARRANTY; without even the implied warranty of
00013   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014   GNU General Public License for more details.
00015 
00016   You should have received a copy of the GNU General Public License
00017   along with this program.  If not, see <http://www.gnu.org/licenses/>.
00018 */
00019 
00020 #ifndef INCLUDE_UTIL_H
00021 #define INCLUDE_UTIL_H 1
00022 
00023 //#include "FatFs/ff.h"
00024 #include <stdint.h>
00025 #include <stdlib.h>
00026 #include <stdio.h>
00027 
00028 #ifdef LOG_TAG
00029 #define LOG(msg, ...) \
00030     do { printf("%-16s "msg"\n", LOG_TAG, ##__VA_ARGS__); } while (0)
00031 #else
00032 #define LOG(msg, ...)
00033 #endif
00034 
00035 #ifndef ARRAY_SIZE
00036 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
00037 #endif
00038 
00039 #ifndef min
00040 #define min(x,y)    ( (x) < (y) ? (x) : (y) )
00041 #endif
00042 #ifndef max
00043 #define max(x,y)    ( (x) > (y) ? (x) : (y) )
00044 #endif
00045 
00046 #define DIV_ROUND_CLOSEST(x, divisor)(              \
00047     {                           \
00048         (((x) + ((divisor) / 2)) / (divisor));      \
00049     }                           \
00050 )
00051 
00052 #define CPU_CLOCK_SPEED_IN_HZ   20000000L
00053 #if CPU_CLOCK_SPEED_IN_HZ < 1000000L
00054 #error CPU_CLOCK_SPEED_IN_HZ assumed to be more than 1MHz in delay timer calculations
00055 #endif
00056 
00057 /* -- Sleep & delay -- */
00058 
00059 extern void udelay(uint16_t us);
00060 extern void mdelay(uint16_t ms);
00061 extern void msleep(uint16_t ms);
00062 
00063 
00064 /* -- Debug utilities */
00065 
00066 /** Print the contents of a buffer with offsets on stdout */
00067 extern void dump_hex(const void *data, uint16_t len);
00068 
00069 #endif /* INCLUDE_UTIL_H */