projects / z180-stamp.git / blame
| Commit | Line | Data |
|---|---|---|
| 35edb766 L |
1 | /* |
| 2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: GPL-2.0+ | |
| 5 | */ | |
| d684c216 | 6 | |
| 72f58822 | 7 | #include "common.h" |
| c748023e | 8 | #include <avr/wdt.h> |
| d684c216 | 9 | |
| c748023e | 10 | #include "config.h" |
| d684c216 | 11 | #include "serial.h" |
| 72f58822 | 12 | #include "background.h" |
| d684c216 L |
13 | #include "con-utils.h" |
| 14 | ||
| d684c216 L |
15 | uint_fast8_t tstc(void) |
| 16 | { | |
| 72f58822 | 17 | bg_shed(); |
| d684c216 L |
18 | return serial_tstc(); |
| 19 | } | |
| 20 | ||
| 424b184a | 21 | int my_getchar(uint_fast8_t waitforchar) |
| d684c216 L |
22 | { |
| 23 | int c; | |
| c79c80b4 | 24 | |
| 72f58822 L |
25 | do { |
| 26 | bg_shed(); | |
| 27 | c = serial_getc(); | |
| 424b184a | 28 | } while ((c < 0) && waitforchar); |
| 72f58822 | 29 | |
| c748023e L |
30 | #ifdef CONFIG_SYS_FBOOTSIG |
| 31 | if (c < 0) | |
| 32 | return c; | |
| 33 | ||
| 34 | static const FLASH unsigned char bootsig[] = {CONFIG_SYS_FBOOTSIG}; | |
| 35 | static uint8_t pb; | |
| 36 | unsigned char uc = c; | |
| 37 | ||
| 38 | ||
| 39 | if (bootsig[pb] == 0) { | |
| 40 | if (uc == 0xff) { | |
| 41 | wdt_enable(WDTO_15MS); | |
| 42 | for(;;) | |
| 43 | ; | |
| 44 | } else | |
| 45 | pb = 0; | |
| 46 | ||
| 47 | } else { | |
| 48 | if (bootsig[pb] == uc) | |
| 49 | pb++; | |
| 50 | else | |
| 51 | pb = 0; | |
| 52 | } | |
| 53 | #endif | |
| 54 | ||
| d684c216 L |
55 | return c; |
| 56 | } | |
| 57 | ||
| 58 | ||
| 59 | /* test if ctrl-c was pressed */ | |
| 60 | ||
| 72f58822 L |
61 | static uint_fast8_t ctrlc_disabled; /* see disable_ctrl() */ |
| 62 | static uint_fast8_t ctrlc_was_pressed; | |
| d684c216 L |
63 | |
| 64 | uint_fast8_t ctrlc(void) | |
| 65 | { | |
| a8b4c964 | 66 | bg_shed(); |
| d684c216 L |
67 | if (!ctrlc_disabled) { |
| 68 | switch (serial_getc()) { | |
| 69 | case 0x03: /* ^C - Control C */ | |
| 70 | ctrlc_was_pressed = 1; | |
| 71 | return 1; | |
| 72 | default: | |
| 73 | break; | |
| 74 | } | |
| 75 | } | |
| 76 | return 0; | |
| 77 | } | |
| 78 | ||
| 79 | /* Reads user's confirmation. | |
| 80 | Returns 1 if user's input is "y", "Y", "yes" or "YES" | |
| 81 | */ | |
| 82 | uint_fast8_t confirm_yesno(void) | |
| 83 | { | |
| 84 | unsigned int i; | |
| 85 | char str_input[5]; | |
| 86 | ||
| 87 | /* Flush input */ | |
| 88 | while (serial_getc()) | |
| 89 | ; | |
| 90 | i = 0; | |
| 91 | while (i < sizeof(str_input)) { | |
| 424b184a | 92 | str_input[i] = my_getchar(1); |
| d684c216 L |
93 | putchar(str_input[i]); |
| 94 | if (str_input[i] == '\r') | |
| 95 | break; | |
| 96 | i++; | |
| 97 | } | |
| 98 | putchar('\n'); | |
| 99 | if (strncmp(str_input, "y\r", 2) == 0 || | |
| 100 | strncmp(str_input, "Y\r", 2) == 0 || | |
| 101 | strncmp(str_input, "yes\r", 4) == 0 || | |
| 102 | strncmp(str_input, "YES\r", 4) == 0) | |
| 103 | return 1; | |
| 104 | return 0; | |
| 105 | } | |
| 106 | ||
| 107 | /* pass 1 to disable ctrlc() checking, 0 to enable. | |
| 108 | * returns previous state | |
| 109 | */ | |
| 110 | uint_fast8_t disable_ctrlc(uint_fast8_t disable) | |
| 111 | { | |
| 112 | uint_fast8_t prev = ctrlc_disabled; /* save previous state */ | |
| 113 | ||
| 114 | ctrlc_disabled = disable; | |
| 115 | return prev; | |
| 116 | } | |
| 117 | ||
| 118 | uint_fast8_t had_ctrlc (void) | |
| 119 | { | |
| 120 | return ctrlc_was_pressed; | |
| 121 | } | |
| 122 | ||
| 123 | void clear_ctrlc(void) | |
| 124 | { | |
| 125 | ctrlc_was_pressed = 0; | |
| 126 | } |