FreeCalypso > hg > freecalypso-tools
comparison target-utils/pln-ppb-test/read_id.c @ 988:5a6019ed7e72
pln-ppb-test: implement read-id
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 03 Dec 2023 00:04:18 +0000 |
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987:6b87de9e385b | 988:5a6019ed7e72 |
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1 /* | |
2 * read-id (Autoselect) command | |
3 */ | |
4 | |
5 #include <sys/types.h> | |
6 #include "types.h" | |
7 | |
8 void | |
9 cmd_read_id(argbulk) | |
10 char *argbulk; | |
11 { | |
12 char *argv[2]; | |
13 u_long addr; | |
14 | |
15 if (parse_args(argbulk, 1, 1, argv, 0) < 0) | |
16 return; | |
17 if (parse_hexarg(argv[0], 8, &addr) < 0) { | |
18 printf("ERROR: argument must be a valid 32-bit hex address\n"); | |
19 return; | |
20 } | |
21 if (addr & 0xFFFF) { | |
22 printf("ERROR: address is not on 64 KiB boundary\n"); | |
23 return; | |
24 } | |
25 *(volatile u16 *)(addr + 0xAAA) = 0xAA; | |
26 *(volatile u16 *)(addr + 0x554) = 0x55; | |
27 *(volatile u16 *)(addr + 0xAAA) = 0x90; | |
28 } |