mbed library sources. Supersedes mbed-src.
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targets/TARGET_NORDIC/TARGET_MCU_NRF51822/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?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2013 Nordic Semiconductor |
<> | 144:ef7eb2e8f9f7 | 3 | * |
<> | 144:ef7eb2e8f9f7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 144:ef7eb2e8f9f7 | 5 | * you may not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 6 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 144:ef7eb2e8f9f7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 13 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 14 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 15 | */ |
<> | 144:ef7eb2e8f9f7 | 16 | #include "port_api.h" |
<> | 144:ef7eb2e8f9f7 | 17 | #include "pinmap.h" |
<> | 144:ef7eb2e8f9f7 | 18 | #include "gpio_api.h" |
<> | 144:ef7eb2e8f9f7 | 19 | |
<> | 144:ef7eb2e8f9f7 | 20 | PinName port_pin(PortName port, int pin_n) |
<> | 144:ef7eb2e8f9f7 | 21 | { |
<> | 144:ef7eb2e8f9f7 | 22 | return (PinName)(pin_n); |
<> | 144:ef7eb2e8f9f7 | 23 | } |
<> | 144:ef7eb2e8f9f7 | 24 | |
<> | 144:ef7eb2e8f9f7 | 25 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) |
<> | 144:ef7eb2e8f9f7 | 26 | { |
<> | 144:ef7eb2e8f9f7 | 27 | obj->port = port; |
<> | 144:ef7eb2e8f9f7 | 28 | obj->mask = mask; |
<> | 144:ef7eb2e8f9f7 | 29 | |
<> | 144:ef7eb2e8f9f7 | 30 | obj->reg_out = &NRF_GPIO->OUT; |
<> | 144:ef7eb2e8f9f7 | 31 | obj->reg_in = &NRF_GPIO->IN; |
<> | 144:ef7eb2e8f9f7 | 32 | obj->reg_cnf = NRF_GPIO->PIN_CNF; |
<> | 144:ef7eb2e8f9f7 | 33 | |
<> | 144:ef7eb2e8f9f7 | 34 | port_dir(obj, dir); |
<> | 144:ef7eb2e8f9f7 | 35 | } |
<> | 144:ef7eb2e8f9f7 | 36 | |
<> | 144:ef7eb2e8f9f7 | 37 | void port_mode(port_t *obj, PinMode mode) |
<> | 144:ef7eb2e8f9f7 | 38 | { |
<> | 144:ef7eb2e8f9f7 | 39 | uint32_t i; |
<> | 144:ef7eb2e8f9f7 | 40 | // The mode is set per pin: reuse pinmap logic |
<> | 144:ef7eb2e8f9f7 | 41 | for (i = 0; i<31; i++) { |
<> | 144:ef7eb2e8f9f7 | 42 | if (obj->mask & (1 << i)) { |
<> | 144:ef7eb2e8f9f7 | 43 | pin_mode(port_pin(obj->port, i), mode); |
<> | 144:ef7eb2e8f9f7 | 44 | } |
<> | 144:ef7eb2e8f9f7 | 45 | } |
<> | 144:ef7eb2e8f9f7 | 46 | } |
<> | 144:ef7eb2e8f9f7 | 47 | |
<> | 144:ef7eb2e8f9f7 | 48 | void port_dir(port_t *obj, PinDirection dir) |
<> | 144:ef7eb2e8f9f7 | 49 | { |
<> | 144:ef7eb2e8f9f7 | 50 | int i; |
<> | 144:ef7eb2e8f9f7 | 51 | switch (dir) { |
<> | 144:ef7eb2e8f9f7 | 52 | case PIN_INPUT: |
<> | 144:ef7eb2e8f9f7 | 53 | for (i = 0; i<31; i++) { |
<> | 144:ef7eb2e8f9f7 | 54 | if (obj->mask & (1 << i)) { |
<> | 144:ef7eb2e8f9f7 | 55 | obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
<> | 144:ef7eb2e8f9f7 | 56 | | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
<> | 144:ef7eb2e8f9f7 | 57 | | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
<> | 144:ef7eb2e8f9f7 | 58 | | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos); |
<> | 144:ef7eb2e8f9f7 | 59 | } |
<> | 144:ef7eb2e8f9f7 | 60 | } |
<> | 144:ef7eb2e8f9f7 | 61 | break; |
<> | 144:ef7eb2e8f9f7 | 62 | case PIN_OUTPUT: |
<> | 144:ef7eb2e8f9f7 | 63 | for (i = 0; i<31; i++) { |
<> | 144:ef7eb2e8f9f7 | 64 | if (obj->mask & (1 << i)) { |
<> | 144:ef7eb2e8f9f7 | 65 | obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
<> | 144:ef7eb2e8f9f7 | 66 | | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
<> | 144:ef7eb2e8f9f7 | 67 | | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
<> | 144:ef7eb2e8f9f7 | 68 | | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
<> | 144:ef7eb2e8f9f7 | 69 | | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
<> | 144:ef7eb2e8f9f7 | 70 | } |
<> | 144:ef7eb2e8f9f7 | 71 | } |
<> | 144:ef7eb2e8f9f7 | 72 | break; |
<> | 144:ef7eb2e8f9f7 | 73 | } |
<> | 144:ef7eb2e8f9f7 | 74 | } |
<> | 144:ef7eb2e8f9f7 | 75 | |
<> | 144:ef7eb2e8f9f7 | 76 | void port_write(port_t *obj, int value) |
<> | 144:ef7eb2e8f9f7 | 77 | { |
<> | 144:ef7eb2e8f9f7 | 78 | *obj->reg_out = value; |
<> | 144:ef7eb2e8f9f7 | 79 | } |
<> | 144:ef7eb2e8f9f7 | 80 | |
<> | 144:ef7eb2e8f9f7 | 81 | int port_read(port_t *obj) |
<> | 144:ef7eb2e8f9f7 | 82 | { |
<> | 144:ef7eb2e8f9f7 | 83 | return (*obj->reg_in); |
<> | 144:ef7eb2e8f9f7 | 84 | } |