FreeCalypso > hg > freecalypso-tools
comparison target-utils/flash-boot-test/watchdog.c @ 490:3d7b546c710c
target-utils/flash-boot-test: more watchdog experimentation commands
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 21 May 2019 23:48:26 +0000 |
parents | cd900b885eb2 |
children |
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489:9fce32cc6220 | 490:3d7b546c710c |
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1 #include <sys/types.h> | |
1 #include "types.h" | 2 #include "types.h" |
2 | 3 |
3 void | 4 void |
4 cmd_watchdog_disable() | 5 cmd_wd() |
5 { | 6 { |
6 /* stop/disable the watchdog timer */ | 7 /* stop/disable the watchdog timer */ |
7 *(volatile u16 *)0xFFFFF804 = 0xF5; | 8 *(volatile u16 *)0xFFFFF804 = 0xF5; |
8 *(volatile u16 *)0xFFFFF804 = 0xA0; | 9 *(volatile u16 *)0xFFFFF804 = 0xA0; |
9 } | 10 } |
11 | |
12 void | |
13 cmd_we() | |
14 { | |
15 /* watchdog enable */ | |
16 *(volatile u16 *)0xFFFFF804 = 0x8000; | |
17 } | |
18 | |
19 void | |
20 cmd_wr() | |
21 { | |
22 /* read and display watchdog downcount register */ | |
23 printf("%04X\n", *(volatile u16 *)0xFFFFF802); | |
24 } | |
25 | |
26 void | |
27 cmd_ww(argbulk) | |
28 char *argbulk; | |
29 { | |
30 /* single or double write to WATCHDOG_TIM_MODE */ | |
31 char *argv[3]; | |
32 u_long w1, w2; | |
33 | |
34 if (parse_args(argbulk, 1, 2, argv, 0) < 0) | |
35 return; | |
36 if (parse_hexarg(argv[0], 4, &w1) < 0) { | |
37 printf("ERROR: arg1 must be a valid 16-bit hex value\n"); | |
38 return; | |
39 } | |
40 if (argv[1] && parse_hexarg(argv[1], 4, &w2) < 0) { | |
41 printf("ERROR: arg2 must be a valid 16-bit hex value\n"); | |
42 return; | |
43 } | |
44 /* do it */ | |
45 *(volatile u16 *)0xFFFFF804 = w1; | |
46 if (argv[1]) | |
47 *(volatile u16 *)0xFFFFF804 = w2; | |
48 } |