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annotate gsm-fw/lldbg/cmd_r16.c @ 993:d92e4aadeeb3

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target-utils/c139explore: a cleaner way of setting the fixed UART base address
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 22:12:35 +0000
parents f5affe83ba2d
children
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865
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1 /*
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2 * r16 hexaddr -- read a 16-bit register or memory location
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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
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8 void
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9 lldbg_cmd_r16(argbulk)
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10 char *argbulk;
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11 {
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12 char *argv[2];
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13 u_long addr;
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14
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15 if (lldbg_parse_args(argbulk, 1, 1, argv, 0) < 0)
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16 return;
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17 if (lldbg_parse_hexarg(argv[0], 8, &addr) < 0) {
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18 lldbg_printf("ERROR: argument 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 & 1) {
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22 lldbg_printf("ERROR: unaligned address\n");
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23 return;
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24 }
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25 lldbg_printf("%04X\n", *(volatile u16 *)addr);
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26 }