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48618e9b8b
At 9600 baud or less a 1 ms wait is too short to detect the end of an escape sequence. Increase the wait duration to 10 ms which will work down to 1200 baud. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
53 lines
993 B
C
53 lines
993 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* The 'conitrace' command prints the codes received from the console input as
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* hexadecimal numbers.
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*
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* Copyright (c) 2018, Heinrich Schuchardt <xypron.glpk@gmx.de>
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*/
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#include <common.h>
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#include <command.h>
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#include <linux/delay.h>
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static int do_conitrace(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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bool first = true;
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printf("Waiting for your input\n");
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printf("To terminate type 'x'\n");
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/* Empty input buffer */
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while (tstc())
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getchar();
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for (;;) {
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int c = getchar();
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if (first && (c == 'x' || c == 'X'))
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break;
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printf("%02x ", c);
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first = false;
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/* 10 ms delay - serves to detect separate keystrokes */
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udelay(10000);
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if (!tstc()) {
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printf("\n");
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first = true;
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}
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}
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return CMD_RET_SUCCESS;
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}
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#ifdef CONFIG_SYS_LONGHELP
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static char conitrace_help_text[] = "";
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#endif
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U_BOOT_CMD_COMPLETE(
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conitrace, 2, 0, do_conitrace,
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"trace console input",
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conitrace_help_text, NULL
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);
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