tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/pinmap.c

   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 "pinmap.h"
  17 #include "mbed_error.h"
  18 #include "gpio_addrdefine.h"
  19
  20 PinName gpio_multi_guard = (PinName)NC; /* If set pin name here, setting of the "pin" is just one time */
  21
  22 void pin_function(PinName pin, int function) {
  23     if (pin == (PinName)NC) return;
  24
  25     int n = pin >> 4;
  26     int bitmask = 1<<(pin  & 0xf);
  27
  28     if (gpio_multi_guard != pin) {
  29         if (function == 0) {
  30             // means GPIO mode
  31             *PMC(n) &= ~bitmask;
  32         } else {
  33             // alt-function mode
  34             --function;
  35
  36             if (function & (1 << 2)) { *PFCAE(n) |= bitmask;}else  { *PFCAE(n) &= ~bitmask;}
  37             if (function & (1 << 1)) { *PFCE(n) |= bitmask;}else  { *PFCE(n) &= ~bitmask;}
  38             if (function & (1 << 0)) { *PFC(n) |= bitmask;}else  { *PFC(n) &= ~bitmask;}
  39             *PIPC(n) |= bitmask;
  40
  41             if (P1_0 <= pin && pin <= P1_7 && function == 0) {
  42                 *PBDC(n) |= bitmask;
  43             }
  44             *PMC(n) |= bitmask;
  45         }
  46     } else {
  47         gpio_multi_guard = (PinName)NC;
  48     }
  49 }
  50
  51 void pin_mode(PinName pin, PinMode mode) {
  52 //    if (pin == (PinName)NC) { return; }
  53 }