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_SSG/TARGET_CM3DS_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
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 184:08ed48f1de7f 2 * Copyright (c) 2006-2018 ARM Limited
AnnaBridge 167:e84263d55307 3 *
AnnaBridge 167:e84263d55307 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 167:e84263d55307 5 * you may not use this file except in compliance with the License.
AnnaBridge 167:e84263d55307 6 * You may obtain a copy of the License at
AnnaBridge 167:e84263d55307 7 *
AnnaBridge 167:e84263d55307 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 167:e84263d55307 9 *
AnnaBridge 167:e84263d55307 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 167:e84263d55307 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 167:e84263d55307 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 167:e84263d55307 13 * See the License for the specific language governing permissions and
AnnaBridge 167:e84263d55307 14 * limitations under the License.
AnnaBridge 167:e84263d55307 15 */
AnnaBridge 184:08ed48f1de7f 16 #include <stddef.h>
AnnaBridge 167:e84263d55307 17 #include "port_api.h"
AnnaBridge 184:08ed48f1de7f 18 #include "objects.h"
AnnaBridge 184:08ed48f1de7f 19 #include "mbed_error.h"
AnnaBridge 168:9672193075cf 20
AnnaBridge 167:e84263d55307 21 PinName port_pin(PortName port, int pin_n)
AnnaBridge 167:e84263d55307 22 {
AnnaBridge 184:08ed48f1de7f 23 if (pin_n < 0 || pin_n >= PINS_PER_GPIO ||
AnnaBridge 184:08ed48f1de7f 24 ((port == Port3) && (pin_n >= GPIO3_PIN_NUMBER))) {
AnnaBridge 184:08ed48f1de7f 25 return NC;
AnnaBridge 168:9672193075cf 26 }
AnnaBridge 168:9672193075cf 27
Anna Bridge 186:707f6e361f3e 28 return (PinName)(PINS_PER_GPIO * port + pin_n);
AnnaBridge 167:e84263d55307 29 }
AnnaBridge 167:e84263d55307 30
AnnaBridge 167:e84263d55307 31 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
AnnaBridge 167:e84263d55307 32 {
AnnaBridge 184:08ed48f1de7f 33 struct arm_gpio_dev_t *gpio_dev;
AnnaBridge 184:08ed48f1de7f 34 uint32_t flags = ARM_GPIO_PIN_ENABLE;
AnnaBridge 167:e84263d55307 35
AnnaBridge 168:9672193075cf 36 switch (port) {
AnnaBridge 184:08ed48f1de7f 37 #ifdef ARM_GPIO0
AnnaBridge 184:08ed48f1de7f 38 case Port0:
AnnaBridge 184:08ed48f1de7f 39 gpio_dev = &ARM_GPIO0_DEV;
AnnaBridge 184:08ed48f1de7f 40 break;
AnnaBridge 184:08ed48f1de7f 41 #endif /* ARM_GPIO0 */
AnnaBridge 184:08ed48f1de7f 42 #ifdef ARM_GPIO1
AnnaBridge 184:08ed48f1de7f 43 case Port1:
AnnaBridge 184:08ed48f1de7f 44 gpio_dev = &ARM_GPIO1_DEV;
AnnaBridge 184:08ed48f1de7f 45 break;
AnnaBridge 184:08ed48f1de7f 46 #endif /* ARM_GPIO1 */
AnnaBridge 184:08ed48f1de7f 47 #ifdef ARM_GPIO2
AnnaBridge 184:08ed48f1de7f 48 case Port2:
AnnaBridge 184:08ed48f1de7f 49 gpio_dev = &ARM_GPIO2_DEV;
AnnaBridge 184:08ed48f1de7f 50 break;
AnnaBridge 184:08ed48f1de7f 51 #endif /* ARM_GPIO2 */
AnnaBridge 184:08ed48f1de7f 52 #ifdef ARM_GPIO3
AnnaBridge 184:08ed48f1de7f 53 case Port3:
AnnaBridge 184:08ed48f1de7f 54 gpio_dev = &ARM_GPIO3_DEV;
AnnaBridge 184:08ed48f1de7f 55 break;
AnnaBridge 184:08ed48f1de7f 56 #endif /* ARM_GPIO3 */
AnnaBridge 184:08ed48f1de7f 57 default:
AnnaBridge 184:08ed48f1de7f 58 error("Port%d is not enabled", port);
AnnaBridge 184:08ed48f1de7f 59 return;
AnnaBridge 168:9672193075cf 60 }
AnnaBridge 167:e84263d55307 61
AnnaBridge 184:08ed48f1de7f 62 arm_gpio_init(gpio_dev);
AnnaBridge 184:08ed48f1de7f 63 obj->gpio_dev = gpio_dev;
AnnaBridge 184:08ed48f1de7f 64
AnnaBridge 184:08ed48f1de7f 65 arm_gpio_set_port_mask(gpio_dev, mask);
AnnaBridge 167:e84263d55307 66
AnnaBridge 184:08ed48f1de7f 67 switch (dir) {
AnnaBridge 184:08ed48f1de7f 68 case PIN_INPUT:
AnnaBridge 184:08ed48f1de7f 69 flags |= ARM_GPIO_INPUT;
AnnaBridge 184:08ed48f1de7f 70 break;
AnnaBridge 184:08ed48f1de7f 71 case PIN_OUTPUT:
AnnaBridge 184:08ed48f1de7f 72 flags |= ARM_GPIO_OUTPUT;
AnnaBridge 184:08ed48f1de7f 73 break;
AnnaBridge 184:08ed48f1de7f 74 /* default: not added to force to cover all enumeration cases */
AnnaBridge 167:e84263d55307 75 }
AnnaBridge 167:e84263d55307 76
AnnaBridge 184:08ed48f1de7f 77 (void)arm_gpio_config(gpio_dev, ARM_GPIO_ACCESS_PORT, ARG_NOT_USED, flags);
AnnaBridge 167:e84263d55307 78 }
AnnaBridge 167:e84263d55307 79
AnnaBridge 167:e84263d55307 80 void port_mode(port_t *obj, PinMode mode)
AnnaBridge 167:e84263d55307 81 {
AnnaBridge 184:08ed48f1de7f 82 /* PinMode is not supported */
AnnaBridge 167:e84263d55307 83 }
AnnaBridge 167:e84263d55307 84
AnnaBridge 167:e84263d55307 85 void port_dir(port_t *obj, PinDirection dir)
AnnaBridge 167:e84263d55307 86 {
AnnaBridge 184:08ed48f1de7f 87 uint32_t flags = (dir == PIN_OUTPUT) ? ARM_GPIO_OUTPUT : ARM_GPIO_INPUT;
AnnaBridge 184:08ed48f1de7f 88 (void)arm_gpio_config(obj->gpio_dev, ARM_GPIO_ACCESS_PORT, ARG_NOT_USED,
AnnaBridge 184:08ed48f1de7f 89 flags);
AnnaBridge 167:e84263d55307 90 }
AnnaBridge 167:e84263d55307 91
AnnaBridge 167:e84263d55307 92 void port_write(port_t *obj, int value)
AnnaBridge 167:e84263d55307 93 {
AnnaBridge 184:08ed48f1de7f 94 (void)arm_gpio_write(obj->gpio_dev, ARM_GPIO_ACCESS_PORT, ARG_NOT_USED,
AnnaBridge 184:08ed48f1de7f 95 (uint32_t)value);
AnnaBridge 167:e84263d55307 96 }
AnnaBridge 167:e84263d55307 97
AnnaBridge 167:e84263d55307 98 int port_read(port_t *obj)
AnnaBridge 167:e84263d55307 99 {
AnnaBridge 184:08ed48f1de7f 100 return (int)arm_gpio_read(obj->gpio_dev, ARM_GPIO_ACCESS_PORT,
AnnaBridge 184:08ed48f1de7f 101 ARG_NOT_USED);
AnnaBridge 167:e84263d55307 102 }