The 'conitrace' command prints the codes received from the console input as hexadecimal numbers. This developer utility is useful for testing the handling of special keys by keyboard drivers. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>lime2-spi
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// 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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static int do_conitrace(cmd_tbl_t *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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getc(); |
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for (;;) { |
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int c = getc(); |
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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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/* 1 ms delay - serves to detect separate keystrokes */ |
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udelay(1000); |
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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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