mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

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

targets/TARGET_ARM_FM/TARGET_FVP_MPS2/port_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
186:707f6e361f3e 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Anna Bridge 186:707f6e361f3e 1 /* mbed Microcontroller Library
Anna Bridge 186:707f6e361f3e 2 * Copyright (c) 2006-2018 ARM Limited
Anna Bridge 186:707f6e361f3e 3 *
Anna Bridge 186:707f6e361f3e 4 * Licensed under the Apache License, Version 2.0 (the "License");
Anna Bridge 186:707f6e361f3e 5 * you may not use this file except in compliance with the License.
Anna Bridge 186:707f6e361f3e 6 * You may obtain a copy of the License at
Anna Bridge 186:707f6e361f3e 7 *
Anna Bridge 186:707f6e361f3e 8 * http://www.apache.org/licenses/LICENSE-2.0
Anna Bridge 186:707f6e361f3e 9 *
Anna Bridge 186:707f6e361f3e 10 * Unless required by applicable law or agreed to in writing, software
Anna Bridge 186:707f6e361f3e 11 * distributed under the License is distributed on an "AS IS" BASIS,
Anna Bridge 186:707f6e361f3e 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Anna Bridge 186:707f6e361f3e 13 * See the License for the specific language governing permissions and
Anna Bridge 186:707f6e361f3e 14 * limitations under the License.
Anna Bridge 186:707f6e361f3e 15 */
Anna Bridge 186:707f6e361f3e 16 #include "port_api.h"
Anna Bridge 186:707f6e361f3e 17 #include "pinmap.h"
Anna Bridge 186:707f6e361f3e 18 #include "gpio_api.h"
Anna Bridge 186:707f6e361f3e 19
Anna Bridge 186:707f6e361f3e 20 PinName port_pin(PortName port, int pin_n)
Anna Bridge 186:707f6e361f3e 21 {
Anna Bridge 186:707f6e361f3e 22 return (PinName)((port << PORT_SHIFT) | pin_n);
Anna Bridge 186:707f6e361f3e 23 }
Anna Bridge 186:707f6e361f3e 24
Anna Bridge 186:707f6e361f3e 25 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
Anna Bridge 186:707f6e361f3e 26 {
Anna Bridge 186:707f6e361f3e 27 obj->port = port;
Anna Bridge 186:707f6e361f3e 28 obj->mask = mask;
Anna Bridge 186:707f6e361f3e 29
Anna Bridge 186:707f6e361f3e 30 CMSDK_GPIO_TypeDef *port_reg = (CMSDK_GPIO_TypeDef *)(CMSDK_GPIO0_BASE + ((int)port * 0x10));
Anna Bridge 186:707f6e361f3e 31
Anna Bridge 186:707f6e361f3e 32 obj->reg_in = &port_reg->DATAOUT;
Anna Bridge 186:707f6e361f3e 33 obj->reg_dir = &port_reg->OUTENABLESET;
Anna Bridge 186:707f6e361f3e 34 obj->reg_dirclr = &port_reg->OUTENABLECLR;
Anna Bridge 186:707f6e361f3e 35
Anna Bridge 186:707f6e361f3e 36 uint32_t i;
Anna Bridge 186:707f6e361f3e 37 // The function is set per pin: reuse gpio logic
Anna Bridge 186:707f6e361f3e 38 for (i = 0; i < 16; i++) {
Anna Bridge 186:707f6e361f3e 39 if (obj->mask & (1 << i)) {
Anna Bridge 186:707f6e361f3e 40 gpio_set(port_pin(obj->port, i));
Anna Bridge 186:707f6e361f3e 41 }
Anna Bridge 186:707f6e361f3e 42 }
Anna Bridge 186:707f6e361f3e 43
Anna Bridge 186:707f6e361f3e 44 port_dir(obj, dir);
Anna Bridge 186:707f6e361f3e 45 }
Anna Bridge 186:707f6e361f3e 46
Anna Bridge 186:707f6e361f3e 47 void port_mode(port_t *obj, PinMode mode)
Anna Bridge 186:707f6e361f3e 48 {
Anna Bridge 186:707f6e361f3e 49 uint32_t i;
Anna Bridge 186:707f6e361f3e 50 // The mode is set per pin: reuse pinmap logic
Anna Bridge 186:707f6e361f3e 51 for (i = 0; i < 32; i++) {
Anna Bridge 186:707f6e361f3e 52 if (obj->mask & (1 << i)) {
Anna Bridge 186:707f6e361f3e 53 pin_mode(port_pin(obj->port, i), mode);
Anna Bridge 186:707f6e361f3e 54 }
Anna Bridge 186:707f6e361f3e 55 }
Anna Bridge 186:707f6e361f3e 56 }
Anna Bridge 186:707f6e361f3e 57
Anna Bridge 186:707f6e361f3e 58 void port_dir(port_t *obj, PinDirection dir)
Anna Bridge 186:707f6e361f3e 59 {
Anna Bridge 186:707f6e361f3e 60 switch (dir) {
Anna Bridge 186:707f6e361f3e 61 case PIN_INPUT :
Anna Bridge 186:707f6e361f3e 62 *obj->reg_dir &= ~obj->mask;
Anna Bridge 186:707f6e361f3e 63 break;
Anna Bridge 186:707f6e361f3e 64 case PIN_OUTPUT:
Anna Bridge 186:707f6e361f3e 65 *obj->reg_dir |= obj->mask;
Anna Bridge 186:707f6e361f3e 66 break;
Anna Bridge 186:707f6e361f3e 67 }
Anna Bridge 186:707f6e361f3e 68 }
Anna Bridge 186:707f6e361f3e 69
Anna Bridge 186:707f6e361f3e 70 void port_write(port_t *obj, int value)
Anna Bridge 186:707f6e361f3e 71 {
Anna Bridge 186:707f6e361f3e 72 *obj->reg_in = value;
Anna Bridge 186:707f6e361f3e 73 }
Anna Bridge 186:707f6e361f3e 74
Anna Bridge 186:707f6e361f3e 75 int port_read(port_t *obj)
Anna Bridge 186:707f6e361f3e 76 {
Anna Bridge 186:707f6e361f3e 77 return (*obj->reg_in);
Anna Bridge 186:707f6e361f3e 78 }