FreeCalypso > hg > freecalypso-sw
annotate target-utils/libcommon/cmd_w8.c @ 484:c617a6adcb69
top level README: status update
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sun, 29 Jun 2014 19:05:52 +0000 |
parents | 4c78fc688127 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /* |
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2 * w8 hexaddr xx -- write an 8-bit register or memory location |
4c78fc688127
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3 */ |
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4 |
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5 #include <sys/types.h> |
4c78fc688127
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6 #include "types.h" |
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7 |
4c78fc688127
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8 void |
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9 cmd_w8(argbulk) |
4c78fc688127
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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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14 |
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15 if (parse_args(argbulk, 2, 2, argv, 0) < 0) |
4c78fc688127
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16 return; |
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17 if (parse_hexarg(argv[0], 8, &addr) < 0) { |
4c78fc688127
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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 } |
4c78fc688127
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21 if (parse_hexarg(argv[1], 2, &data) < 0) { |
4c78fc688127
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22 printf("ERROR: arg2 must be a valid 8-bit hex value\n"); |
4c78fc688127
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23 return; |
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24 } |
4c78fc688127
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25 *(volatile u8 *)addr = data; |
4c78fc688127
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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26 } |