FreeCalypso > hg > freecalypso-tools

annotate target-utils/libcommon/cmd_w32.c @ 831:2f401860e9ad

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documentation update for buzzer melodies
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 31 May 2021 04:24:22 +0000
parents e7502631a0f9
children
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1 /*
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2 * w32 hexaddr xxxxxxxx -- write a 32-bit register or memory location
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3 */
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5 #include <sys/types.h>
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6 #include "types.h"
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7
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8 void
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9 cmd_w32(argbulk)
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10 char *argbulk;
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11 {
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12 char *argv[3];
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13 u_long addr, data;
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15 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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16 return;
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17 if (parse_hexarg(argv[0], 8, &addr) < 0) {
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18 printf("ERROR: arg1 must be a valid 32-bit hex address\n");
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19 return;
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20 }
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21 if (addr & 3) {
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22 printf("ERROR: unaligned address\n");
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23 return;
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24 }
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25 if (parse_hexarg(argv[1], 8, &data) < 0) {
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26 printf("ERROR: arg2 must be a valid 32-bit hex value\n");
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27 return;
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28 }
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29 *(volatile u32 *)addr = data;
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30 }