mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/port_api.c
- Committer:
- mbed_official
- Date:
- 2014-08-01
- Revision:
- 270:e2babe29baf8
- Parent:
- targets/hal/TARGET_NORDIC/TARGET_NRF51822/port_api.c@ 104:a6a92e2e5a92
- Child:
- 300:55638feb26a4
File content as of revision 270:e2babe29baf8:
/* mbed Microcontroller Library * Copyright (c) 2013 Nordic Semiconductor * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "port_api.h" #include "pinmap.h" #include "gpio_api.h" PinName port_pin(PortName port, int pin_n) { return (PinName)(pin_n); } void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { obj->port = port; obj->mask = mask; obj->reg_out = &NRF_GPIO->OUT; obj->reg_in = &NRF_GPIO->IN; obj->reg_cnf = NRF_GPIO->PIN_CNF; port_dir(obj, dir); } void port_mode(port_t *obj, PinMode mode) { uint32_t i; // The mode is set per pin: reuse pinmap logic for (i=0; i<31; i++) { if (obj->mask & (1<<i)) { pin_mode(port_pin(obj->port, i), mode); } } } void port_dir(port_t *obj, PinDirection dir) { int i; switch (dir) { case PIN_INPUT : for (i=0; i<31; i++) { if (obj->mask & (1<<i)) { obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos); } } break; case PIN_OUTPUT: for (i=0; i<31; i++) { if (obj->mask & (1<<i)) { obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); } } break; } } void port_write(port_t *obj, int value) { *obj->reg_out = value; } int port_read(port_t *obj) { return (*obj->reg_in); }