mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_RENESAS/TARGET_RZ_A1XX/gpio_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
181:57724642e740 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 181:57724642e740 1 /* mbed Microcontroller Library
AnnaBridge 181:57724642e740 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 181:57724642e740 3 *
AnnaBridge 181:57724642e740 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 181:57724642e740 5 * you may not use this file except in compliance with the License.
AnnaBridge 181:57724642e740 6 * You may obtain a copy of the License at
AnnaBridge 181:57724642e740 7 *
AnnaBridge 181:57724642e740 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 181:57724642e740 9 *
AnnaBridge 181:57724642e740 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 181:57724642e740 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 181:57724642e740 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 181:57724642e740 13 * See the License for the specific language governing permissions and
AnnaBridge 181:57724642e740 14 * limitations under the License.
AnnaBridge 181:57724642e740 15 */
AnnaBridge 181:57724642e740 16 #include "gpio_api.h"
AnnaBridge 181:57724642e740 17 #include "pinmap.h"
AnnaBridge 181:57724642e740 18 #include "gpio_addrdefine.h"
AnnaBridge 181:57724642e740 19 #include "mbed_drv_cfg.h"
AnnaBridge 181:57724642e740 20
AnnaBridge 181:57724642e740 21
AnnaBridge 181:57724642e740 22 uint32_t gpio_set(PinName pin) {
AnnaBridge 181:57724642e740 23 pin_function(pin, 0);
AnnaBridge 181:57724642e740 24 return (1 << PINNO(pin));
AnnaBridge 181:57724642e740 25 }
AnnaBridge 181:57724642e740 26
AnnaBridge 181:57724642e740 27 void gpio_init(gpio_t *obj, PinName pin) {
AnnaBridge 181:57724642e740 28 int group ;
AnnaBridge 181:57724642e740 29 obj->pin = pin;
AnnaBridge 181:57724642e740 30 if(pin == NC) return;
AnnaBridge 181:57724642e740 31
AnnaBridge 181:57724642e740 32 obj->mask = gpio_set(pin);
AnnaBridge 181:57724642e740 33
AnnaBridge 181:57724642e740 34 group = PINGROUP(pin);
AnnaBridge 181:57724642e740 35 if (group > GPIO_GROUP_MAX) return;
AnnaBridge 181:57724642e740 36
AnnaBridge 181:57724642e740 37 obj->reg_set = (volatile uint32_t *) PSR(group);
AnnaBridge 181:57724642e740 38 obj->reg_in = (volatile uint32_t *) PPR(group);
AnnaBridge 181:57724642e740 39 obj->reg_dir = (volatile uint32_t *)PMSR(group);
AnnaBridge 181:57724642e740 40 obj->reg_buf = (volatile uint32_t *)PIBC(group);
AnnaBridge 181:57724642e740 41 }
AnnaBridge 181:57724642e740 42
AnnaBridge 181:57724642e740 43 void gpio_mode(gpio_t *obj, PinMode mode) {
AnnaBridge 181:57724642e740 44 /* Pull up and Pull down settings aren't supported because RZ/A1H doesn't have pull up/down for pins(signals). */
AnnaBridge 181:57724642e740 45 }
AnnaBridge 181:57724642e740 46
AnnaBridge 181:57724642e740 47 void gpio_dir(gpio_t *obj, PinDirection direction) {
AnnaBridge 181:57724642e740 48 switch (direction) {
AnnaBridge 181:57724642e740 49 case PIN_INPUT :
AnnaBridge 181:57724642e740 50 *obj->reg_dir = (obj->mask << 16) | obj->mask;
AnnaBridge 181:57724642e740 51 *obj->reg_buf |= obj->mask;
AnnaBridge 181:57724642e740 52 break;
AnnaBridge 181:57724642e740 53 case PIN_OUTPUT:
AnnaBridge 181:57724642e740 54 *obj->reg_dir = (obj->mask << 16) | 0;
AnnaBridge 181:57724642e740 55 *obj->reg_buf &= ~obj->mask;
AnnaBridge 181:57724642e740 56 break;
AnnaBridge 181:57724642e740 57 }
AnnaBridge 181:57724642e740 58 }