[429] | 1 | /* mbed Microcontroller Library
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| 2 | * Copyright (c) 2006-2013 ARM Limited
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | #include "PeripheralPins.h"
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| 17 | #include "mbed_error.h"
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| 18 | #include "gpio_addrdefine.h"
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| 19 |
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| 20 | PinName gpio_multi_guard = (PinName)NC; /* If set pin name here, setting of the "pin" is just one time */
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| 21 |
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| 22 | void pin_function(PinName pin, int function) {
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| 23 | if (pin == (PinName)NC) return;
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| 24 |
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| 25 | int n = pin >> 4;
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| 26 | int bitmask = 1<<(pin & 0xf);
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| 27 | const PinFunc * Pipc_0_func = PIPC_0_tbl;
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| 28 | int pipc_data = 1;
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| 29 |
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| 30 | if (gpio_multi_guard != pin) {
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| 31 | if (function == 0) {
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| 32 | // means GPIO mode
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| 33 | *PMC(n) &= ~bitmask;
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| 34 | } else {
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| 35 | // alt-function mode
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| 36 | --function;
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| 37 |
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| 38 | if (function & (1 << 2)) { *PFCAE(n) |= bitmask;}else { *PFCAE(n) &= ~bitmask;}
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| 39 | if (function & (1 << 1)) { *PFCE(n) |= bitmask;}else { *PFCE(n) &= ~bitmask;}
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| 40 | if (function & (1 << 0)) { *PFC(n) |= bitmask;}else { *PFC(n) &= ~bitmask;}
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| 41 |
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| 42 | while (Pipc_0_func->pin != NC) {
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| 43 | if ((Pipc_0_func->pin == pin) && ((Pipc_0_func->function - 1) == function)) {
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| 44 | pipc_data = 0;
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| 45 | if (Pipc_0_func->pm == 0) {
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| 46 | *PMSR(n) = (bitmask << 16) | 0;
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| 47 | } else if (Pipc_0_func->pm == 1) {
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| 48 | *PMSR(n) = (bitmask << 16) | bitmask;
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| 49 | } else {
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| 50 | // Do Nothing
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| 51 | }
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| 52 | break;
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| 53 | }
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| 54 | Pipc_0_func++;
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| 55 | }
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| 56 | if (pipc_data == 1) {
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| 57 | *PIPC(n) |= bitmask;
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| 58 | } else {
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| 59 | *PIPC(n) &= ~bitmask;
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| 60 | }
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| 61 |
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| 62 | if (P1_0 <= pin && pin <= P1_7 && function == 0) {
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| 63 | *PBDC(n) |= bitmask;
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| 64 | }
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| 65 | *PMC(n) |= bitmask;
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| 66 | }
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| 67 | } else {
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| 68 | gpio_multi_guard = (PinName)NC;
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| 69 | }
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| 70 | }
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| 71 |
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| 72 | void pin_mode(PinName pin, PinMode mode) {
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| 73 | // if (pin == (PinName)NC) { return; }
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| 74 | }
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