[u-boot.git] / cmd / conitrace.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * The 'conitrace' command prints the codes received from the console input as
 * hexadecimal numbers.
 *
 * Copyright (c) 2018, Heinrich Schuchardt <[email protected]>
 */
#include <common.h>
#include <command.h>

static int do_conitrace(cmd_tbl_t *cmdtp, int flag, int argc,
			char * const argv[])
{
	bool first = true;

	printf("Waiting for your input\n");
	printf("To terminate type 'x'\n");

	/* Empty input buffer */
	while (tstc())
		getc();

	for (;;) {
		int c = getc();

		if (first && (c == 'x' || c == 'X'))
			break;

		printf("%02x ", c);
		first = false;

		/* 1 ms delay - serves to detect separate keystrokes */
		udelay(1000);
		if (!tstc()) {
			printf("\n");
			first = true;
		}
	}

	return CMD_RET_SUCCESS;
}

#ifdef CONFIG_SYS_LONGHELP
static char conitrace_help_text[] = "";
#endif

U_BOOT_CMD_COMPLETE(
	conitrace, 2, 0, do_conitrace,
	"trace console input",
	conitrace_help_text, NULL
);
Commit	Line	Data
29cfc096 HS	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* The 'conitrace' command prints the codes received from the console input as
	4	* hexadecimal numbers.
	5	*
	6	* Copyright (c) 2018, Heinrich Schuchardt <[email protected]>
	7	*/
	8	#include <common.h>
	9	#include <command.h>
	10
	11	static int do_conitrace(cmd_tbl_t *cmdtp, int flag, int argc,
	12	char * const argv[])
	13	{
	14	bool first = true;
	15
	16	printf("Waiting for your input\n");
	17	printf("To terminate type 'x'\n");
	18
	19	/* Empty input buffer */
	20	while (tstc())
	21	getc();
	22
	23	for (;;) {
	24	int c = getc();
	25
	26	if (first && (c == 'x' \|\| c == 'X'))
	27	break;
	28
	29	printf("%02x ", c);
	30	first = false;
	31
	32	/* 1 ms delay - serves to detect separate keystrokes */
	33	udelay(1000);
	34	if (!tstc()) {
	35	printf("\n");
	36	first = true;
	37	}
	38	}
	39
	40	return CMD_RET_SUCCESS;
	41	}
	42
	43	#ifdef CONFIG_SYS_LONGHELP
	44	static char conitrace_help_text[] = "";
	45	#endif
	46
	47	U_BOOT_CMD_COMPLETE(
	48	conitrace, 2, 0, do_conitrace,
	49	"trace console input",
	50	conitrace_help_text, NULL
	51	);