trennfix/sw: Was not as beautiful as expected. Now it's better!
[eisenbahn.git] / trennfix / sw / mm / include / mm / mm_switch.h
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1#ifndef MM_SWITCH_H
2#define MM_SWITCH_H
3
4#include <stdint.h>
d0047978 5#include <config/hardware.h>
70095677 6
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7enum mm_recstate {
8 MM_IDLE = 0,
9 MM_FIRST_FAST_SAMPLE,
10 MM_FIRST_SLOW_SAMPLE, /* If clock arrives, we stay on the fast path! */
11 MM_FAST_SAMPLE,
12 MM_FAST_WAIT_FOR_CLOCK,
9c77e706 13 MM_SLOW_SAMPLE_DELAY,
7c08d02a 14 MM_SLOW_SAMPLE,
9c77e706 15 MM_SLOW_WAIT_FOR_CLOCK_DELAY,
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16 MM_SLOW_WAIT_FOR_CLOCK,
17};
18
19#ifdef MM_USE_REGISTER_VARS
20
21uint8_t register shift_command asm("r2");
22uint8_t register shift_function asm("r3");
23uint8_t register shift_address asm("r4");
24uint8_t register recstate asm("r5");
25uint8_t register bitno asm("r6");
26
27static void inline __attribute((unused)) mm_init(void)
28{
29 bitno = 0;
30 recstate = MM_IDLE;
31}
32
33#else
34
35#define mm_init(...)
36
37#endif
38
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39/*
40 * mm_switch_command - Callback function!
41 *
42 * This function must be defined whenever the mm_switch module is used.
43 * It will be called from interrupt context whenever a new valid command
44 * has arrived.
45 *
46 * decoder is in the range from 1 to 25. Other values will not occur.
47 *
48 * key is in the range from 0 to 8:
49 *
50 * 1 - key1 green pressed
51 * 2 - key1 red pressed
52 * 3 - key2 green pressed
53 * 4 - key2 red pressed
54 * ...
55 * 0 - all keys up
56 *
57 */
58void mm_switch_command(uint8_t decoder, uint8_t key);
59
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60/*
61 * empty comment :-)
62 */
63void mm_switch_drive_cb(uint8_t address, uint8_t speed, uint8_t functions, uint8_t flags);
64
65void mm_switch_drive(uint8_t decoder, uint8_t function, uint8_t command);
66
d0047978 67void mm_switch_pinchange_callback(void);
70095677 68
70095677 69#endif