tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/port_api.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 "port_api.h"
  17 #include "pinmap.h"
  18 #include "gpio_api.h"
  19
  20 PinName port_pin(PortName port, int pin_n) {
  21     return (PinName)(0);
  22 }
  23
  24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
  25     obj->port = port;
  26     obj->mask = mask;
  27
  28     // Do not use masking, because it prevents the use of the unmasked pins
  29     // port_reg->FIOMASK = ~mask;
  30
  31     uint32_t i;
  32     // The function is set per pin: reuse gpio logic
  33     for (i=0; i<32; i++) {
  34         if (obj->mask & (1<<i)) {
  35             gpio_set(port_pin(obj->port, i));
  36         }
  37     }
  38
  39     port_dir(obj, dir);
  40 }
  41
  42 void port_mode(port_t *obj, PinMode mode) {
  43     uint32_t i;
  44     // The mode is set per pin: reuse pinmap logic
  45     for (i=0; i<32; i++) {
  46         if (obj->mask & (1<<i)) {
  47             pin_mode(port_pin(obj->port, i), mode);
  48         }
  49     }
  50 }
  51
  52 void port_dir(port_t *obj, PinDirection dir) {
  53     switch (dir) {
  54         case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
  55         case PIN_OUTPUT: *obj->reg_dir |=  obj->mask; break;
  56     }
  57 }
  58
  59 void port_write(port_t *obj, int value) {
  60     *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
  61 }
  62
  63 int port_read(port_t *obj) {
  64     return (*obj->reg_in & obj->mask);
  65 }