cvs.zerfleddert.de Git - hmcfgusb/blame_incremental

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Commit	Line	Data
	1	/* utility functions
	2	*
	3	* Copyright (c) 2014-16 Michael Gernoth <michael@gernoth.net>
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a copy
	6	* of this software and associated documentation files (the "Software"), to
	7	* deal in the Software without restriction, including without limitation the
	8	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	9	* sell copies of the Software, and to permit persons to whom the Software is
	10	* furnished to do so, subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice shall be included in
	13	* all copies or substantial portions of the Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	18	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	21	* IN THE SOFTWARE.
	22	*/
	23
	24	#include <inttypes.h>
	25
	26	uint8_t ascii_to_nibble(uint8_t a)
	27	{
	28	uint8_t c = 0x00;
	29
	30	if ((a >= '0') && (a <= '9')) {
	31	c = a - '0';
	32	} else if ((a >= 'A') && (a <= 'F')) {
	33	c = (a - 'A') + 10;
	34	} else if ((a >= 'a') && (a <= 'f')) {
	35	c = (a - 'a') + 10;
	36	}
	37
	38	return c;
	39	}
	40
	41	int validate_nibble(uint8_t a)
	42	{
	43	if (((a >= '0') && (a <= '9')) \|\|
	44	((a >= 'A') && (a <= 'F')) \|\|
	45	((a >= 'a') && (a <= 'f')))
	46	return 1;
	47
	48	return 0;
	49	}
	50
	51	char nibble_to_ascii(uint8_t n)
	52	{
	53	const uint8_t nibble[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
	54	'A', 'B', 'C', 'D', 'E', 'F'};
	55
	56	return nibble[n];
	57	}