FreeCalypso > hg > freecalypso-tools

annotate target-utils/lunadrv/regcmd.c @ 926:6a0aa8d36d06

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rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents 36e6a1ff9608
children
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36e6a1ff9608 lunadrv: rd and wr commands added
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1 /*
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2 * Handy commands for reading and writing LCD controller registers.
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3 */
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4
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5 #include <sys/types.h>
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6 #include "types.h"
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7 #include "luna.h"
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8
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9 void
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10 cmd_rd(argbulk)
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11 char *argbulk;
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12 {
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13 char *argv[2];
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14 u_long regno;
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15
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16 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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17 return;
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18 if (parse_hexarg(argv[0], 4, &regno) < 0) {
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19 printf("ERROR: regno argument must be a valid 16-bit hex word\n");
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20 return;
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21 }
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22 LCD_IR = regno;
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23 printf("%04X\n", LCD_DR);
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24 }
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25
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26 void
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27 cmd_wr(argbulk)
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28 char *argbulk;
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29 {
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30 char *argv[3];
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31 u_long regno, value;
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32
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33 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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34 return;
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35 if (parse_hexarg(argv[0], 4, &regno) < 0) {
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36 printf("ERROR: regno argument must be a valid 16-bit hex word\n");
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37 return;
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38 }
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39 if (parse_hexarg(argv[1], 4, &value) < 0) {
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40 printf("ERROR: value argument must be a valid 16-bit hex word\n");
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41 return;
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42 }
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43 LCD_IR = regno;
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44 LCD_DR = value;
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45 }