blob: 7763f209a8bb1a880a6707debf4129956959eca1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.io/license.html
*/
/**
* @file src/ginput/ginput_dial.c
* @brief GINPUT dial code.
*
* @defgroup Dial Dial
* @ingroup GINPUT
* @{
*/
#include "../../gfx.h"
#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
#include "ginput_driver_dial.h"
static GTIMER_DECL(DialTimer);
static struct DialStatus_t {
uint16_t sensitivity;
uint16_t lastvalue;
uint16_t max;
} DialStatus[GINPUT_DIAL_NUM_PORTS];
// The reading callback function
static void DialCallback(uint16_t instance, uint16_t rawvalue) {
struct DialStatus_t *pds;
GSourceListener *psl;
GEventDial *pe;
/* Get the information we need */
pds = DialStatus+instance;
/* Range scale - if needed */
if (pds->max != GINPUT_DIAL_MAX_VALUE)
rawvalue = (uint16_t)((uint32_t)rawvalue * pds->max / GINPUT_DIAL_MAX_VALUE);
/* Forget about changes below our sensitivity threshold */
if (rawvalue >= pds->lastvalue) {
if (rawvalue - pds->lastvalue < pds->sensitivity) return;
} else {
if (pds->lastvalue - rawvalue < pds->sensitivity) return;
}
/* Save the value */
pds->lastvalue = rawvalue;
// Send the event to the listeners that are interested.
psl = 0;
while ((psl = geventGetSourceListener((GSourceHandle)(DialStatus+instance), psl))) {
if (!(pe = (GEventDial *)geventGetEventBuffer(psl)))
continue;
pe->type = GEVENT_DIAL;
pe->instance = instance;
pe->value = pds->lastvalue;
pe->maxvalue = pds->max;
geventSendEvent(psl);
}
}
GSourceHandle ginputGetDial(uint16_t instance) {
struct DialStatus_t *pds;
if (instance >= GINPUT_DIAL_NUM_PORTS)
return 0;
// Do we need to initialise the dial subsystem?
if (!gtimerIsActive(&DialTimer)) {
for(pds = DialStatus; pds < DialStatus+GINPUT_DIAL_NUM_PORTS; pds++) {
pds->max = GINPUT_DIAL_MAX_VALUE;
#if GINPUT_DIAL_MAX_VALUE < 100
pds->sensitivity = 1;
#else
pds->sensitivity = GINPUT_DIAL_MAX_VALUE/100;
#endif
pds->lastvalue = 0;
}
ginput_lld_dial_init();
gtimerStart(&DialTimer, (GTimerFunction)ginput_lld_dial_poll, DialCallback, gTrue, GINPUT_DIAL_POLL_PERIOD);
}
// OK - return this input
return (GSourceHandle)(DialStatus+instance);
}
void ginputResetDialRange(uint16_t instance) {
if (instance >= GINPUT_DIAL_NUM_PORTS)
return;
ginputSetDialRange(instance, GINPUT_DIAL_MAX_VALUE);
}
uint16_t ginputGetDialRange(uint16_t instance) {
if (instance >= GINPUT_DIAL_NUM_PORTS)
return 0;
return DialStatus[instance].max;
}
void ginputSetDialRange(uint16_t instance, uint16_t max) {
struct DialStatus_t *pds;
if (instance >= GINPUT_DIAL_NUM_PORTS)
return;
pds = DialStatus+instance;
// Rescale the last value and the sensitivity
if (max != pds->max) {
pds->lastvalue = (uint16_t)((uint32_t)pds->lastvalue * max / pds->max);
pds->sensitivity = (uint16_t)((uint32_t)pds->sensitivity * max / pds->max);
pds->max = max;
}
}
/**
* @brief Set the level change required before a dial even is generated (threshold)
* @note This is done after range scaling
*
* @param[in] instance The ID of the dial input instance
* @param[in] diff The amount of level changes
*/
void ginputSetDialSensitivity(uint16_t instance, uint16_t diff) {
if (instance >= GINPUT_DIAL_NUM_PORTS)
return;
DialStatus[instance].sensitivity = diff;
}
/**
* @brief Get the current dial status
*
* @param[in] instance The ID of the dial input instance
* @param[in] pdial The dial event struct
*
* @return Returns gFalse on an error (eg invalid instance)
*/
gBool ginputGetDialStatus(uint16_t instance, GEventDial *pdial) {
if (instance >= GINPUT_DIAL_NUM_PORTS)
return gFalse;
pdial->type = GEVENT_DIAL;
pdial->instance = instance;
pdial->value = DialStatus[instance].lastvalue;
pdial->maxvalue = DialStatus[instance].max;
return gTrue;
}
#endif /* GFX_USE_GINPUT && GINPUT_NEED_DIAL */
/** @} */
|
