Fawwaz Nadzmy / mbed-STM

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/TARGET_NORDIC/TARGET_NRF5/port_api.c@153:9398a535854b, 2016-12-22 (annotated)

Committer:
fwndz
Date:
Thu Dec 22 05:12:40 2016 +0000
Revision:
153:9398a535854b
Parent:
149:156823d33999 
device target maximize

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /*
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2013 Nordic Semiconductor ASA
<> 144:ef7eb2e8f9f7 3 * All rights reserved.
<> 144:ef7eb2e8f9f7 4 *
<> 144:ef7eb2e8f9f7 5 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 6 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * 1. Redistributions of source code must retain the above copyright notice, this list
<> 144:ef7eb2e8f9f7 9 * of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * 2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA
<> 144:ef7eb2e8f9f7 12 * integrated circuit in a product or a software update for such product, must reproduce
<> 144:ef7eb2e8f9f7 13 * the above copyright notice, this list of conditions and the following disclaimer in
<> 144:ef7eb2e8f9f7 14 * the documentation and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be
<> 144:ef7eb2e8f9f7 17 * used to endorse or promote products derived from this software without specific prior
<> 144:ef7eb2e8f9f7 18 * written permission.
<> 144:ef7eb2e8f9f7 19 *
<> 144:ef7eb2e8f9f7 20 * 4. This software, with or without modification, must only be used with a
<> 144:ef7eb2e8f9f7 21 * Nordic Semiconductor ASA integrated circuit.
<> 144:ef7eb2e8f9f7 22 *
<> 144:ef7eb2e8f9f7 23 * 5. Any software provided in binary or object form under this license must not be reverse
<> 144:ef7eb2e8f9f7 24 * engineered, decompiled, modified and/or disassembled.
<> 144:ef7eb2e8f9f7 25 *
<> 144:ef7eb2e8f9f7 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
<> 144:ef7eb2e8f9f7 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
<> 144:ef7eb2e8f9f7 28 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 29 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
<> 144:ef7eb2e8f9f7 30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
<> 144:ef7eb2e8f9f7 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
<> 144:ef7eb2e8f9f7 32 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
<> 144:ef7eb2e8f9f7 33 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<> 144:ef7eb2e8f9f7 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
<> 144:ef7eb2e8f9f7 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 36 *
<> 144:ef7eb2e8f9f7 37 */
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 #include "port_api.h"
<> 144:ef7eb2e8f9f7 40 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 41 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 PinName port_pin(PortName port, int pin_n)
<> 144:ef7eb2e8f9f7 44 {
<> 144:ef7eb2e8f9f7 45 (void) port;
<> 144:ef7eb2e8f9f7 46 return (PinName)(pin_n);
<> 144:ef7eb2e8f9f7 47 }
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
<> 144:ef7eb2e8f9f7 50 {
<> 144:ef7eb2e8f9f7 51 obj->port = port;
<> 144:ef7eb2e8f9f7 52 obj->mask = mask;
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 obj->reg_out = &NRF_GPIO->OUT;
<> 144:ef7eb2e8f9f7 55 obj->reg_in = &NRF_GPIO->IN;
<> 144:ef7eb2e8f9f7 56 obj->reg_cnf = NRF_GPIO->PIN_CNF;
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 port_dir(obj, dir);
<> 144:ef7eb2e8f9f7 59 }
<> 144:ef7eb2e8f9f7 60
<> 144:ef7eb2e8f9f7 61 void port_mode(port_t *obj, PinMode mode)
<> 144:ef7eb2e8f9f7 62 {
<> 144:ef7eb2e8f9f7 63 uint32_t i;
<> 144:ef7eb2e8f9f7 64 // The mode is set per pin: reuse pinmap logic
<> 144:ef7eb2e8f9f7 65 for (i = 0; i<31; i++) {
<> 144:ef7eb2e8f9f7 66 if (obj->mask & (1 << i)) {
<> 144:ef7eb2e8f9f7 67 pin_mode(port_pin(obj->port, i), mode);
<> 144:ef7eb2e8f9f7 68 }
<> 144:ef7eb2e8f9f7 69 }
<> 144:ef7eb2e8f9f7 70 }
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 void port_dir(port_t *obj, PinDirection dir)
<> 144:ef7eb2e8f9f7 73 {
<> 144:ef7eb2e8f9f7 74 int i;
<> 144:ef7eb2e8f9f7 75 switch (dir) {
<> 144:ef7eb2e8f9f7 76 case PIN_INPUT:
<> 144:ef7eb2e8f9f7 77 for (i = 0; i<31; i++) {
<> 144:ef7eb2e8f9f7 78 if (obj->mask & (1 << i)) {
<> 144:ef7eb2e8f9f7 79 obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
<> 144:ef7eb2e8f9f7 80 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
<> 144:ef7eb2e8f9f7 81 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
<> 144:ef7eb2e8f9f7 82 | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
<> 144:ef7eb2e8f9f7 83 }
<> 144:ef7eb2e8f9f7 84 }
<> 144:ef7eb2e8f9f7 85 break;
<> 144:ef7eb2e8f9f7 86 case PIN_OUTPUT:
<> 144:ef7eb2e8f9f7 87 for (i = 0; i<31; i++) {
<> 144:ef7eb2e8f9f7 88 if (obj->mask & (1 << i)) {
<> 144:ef7eb2e8f9f7 89 obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
<> 144:ef7eb2e8f9f7 90 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
<> 144:ef7eb2e8f9f7 91 | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
<> 144:ef7eb2e8f9f7 92 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
<> 144:ef7eb2e8f9f7 93 | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
<> 144:ef7eb2e8f9f7 94 }
<> 144:ef7eb2e8f9f7 95 }
<> 144:ef7eb2e8f9f7 96 break;
<> 144:ef7eb2e8f9f7 97 }
<> 144:ef7eb2e8f9f7 98 }
<> 144:ef7eb2e8f9f7 99
<> 144:ef7eb2e8f9f7 100 void port_write(port_t *obj, int value)
<> 144:ef7eb2e8f9f7 101 {
<> 144:ef7eb2e8f9f7 102 *obj->reg_out = value;
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 int port_read(port_t *obj)
<> 144:ef7eb2e8f9f7 106 {
<> 144:ef7eb2e8f9f7 107 return (*obj->reg_in);
<> 144:ef7eb2e8f9f7 108 }