1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #include "basic_types.h"
17 #include "diag.h"
18 #include "pinmap.h"
19
pinmap_pinout(PinName pin,const PinMap * map)20 void pinmap_pinout(PinName pin, const PinMap *map)
21 {
22 if (pin == NC)
23 return;
24
25 while (map->pin != NC) {
26 if (map->pin == pin) {
27 pin_mode(pin, PullNone);
28 pin_function(pin, map->function);
29 return;
30 }
31 map++;
32 }
33 }
34
pinmap_merge(uint32_t a,uint32_t b)35 uint32_t pinmap_merge(uint32_t a, uint32_t b)
36 {
37 /* both are the same (inc both NC) */
38 if (a == b)
39 return a;
40
41 /* one (or both) is not connected */
42 if (a == (uint32_t)NC)
43 return b;
44 if (b == (uint32_t)NC)
45 return a;
46
47 /* mis-match error case */
48 DBG_8195A("%s: pinmap mis-match\n", __FUNCTION__);
49
50 return (uint32_t)NC;
51 }
52
pinmap_find_peripheral(PinName pin,const PinMap * map)53 uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map)
54 {
55 while (map->pin != NC) {
56 if (map->pin == pin) {
57 return map->peripheral;
58 }
59 map++;
60 }
61 return (uint32_t)NC;
62 }
63
pinmap_peripheral(PinName pin,const PinMap * map)64 uint32_t pinmap_peripheral(PinName pin, const PinMap* map)
65 {
66 uint32_t peripheral = (uint32_t)NC;
67
68 if (pin == (PinName)NC)
69 return (uint32_t)NC;
70
71 peripheral = pinmap_find_peripheral(pin, map);
72
73 if ((uint32_t)NC == peripheral) {// no mapping available
74 DBG_8195A("%s: pinmap not found for peripheral\n", __FUNCTION__);
75 }
76
77 return peripheral;
78 }
79