mbed library sources
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC13XX/port_api.c@13:0645d8841f51, 2013-08-05 (annotated)
- Committer:
- bogdanm
- Date:
- Mon Aug 05 14:12:34 2013 +0300
- Revision:
- 13:0645d8841f51
- Parent:
- vendor/NXP/LPC11U24/hal/port_api.c@10:3bc89ef62ce7
Update mbed sources to revision 64
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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emilmont | 10:3bc89ef62ce7 | 1 | /* mbed Microcontroller Library |
emilmont | 10:3bc89ef62ce7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
emilmont | 10:3bc89ef62ce7 | 3 | * |
emilmont | 10:3bc89ef62ce7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
emilmont | 10:3bc89ef62ce7 | 5 | * you may not use this file except in compliance with the License. |
emilmont | 10:3bc89ef62ce7 | 6 | * You may obtain a copy of the License at |
emilmont | 10:3bc89ef62ce7 | 7 | * |
emilmont | 10:3bc89ef62ce7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
emilmont | 10:3bc89ef62ce7 | 9 | * |
emilmont | 10:3bc89ef62ce7 | 10 | * Unless required by applicable law or agreed to in writing, software |
emilmont | 10:3bc89ef62ce7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
emilmont | 10:3bc89ef62ce7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
emilmont | 10:3bc89ef62ce7 | 13 | * See the License for the specific language governing permissions and |
emilmont | 10:3bc89ef62ce7 | 14 | * limitations under the License. |
emilmont | 10:3bc89ef62ce7 | 15 | */ |
emilmont | 10:3bc89ef62ce7 | 16 | #include "port_api.h" |
emilmont | 10:3bc89ef62ce7 | 17 | #include "pinmap.h" |
emilmont | 10:3bc89ef62ce7 | 18 | #include "gpio_api.h" |
emilmont | 10:3bc89ef62ce7 | 19 | |
emilmont | 10:3bc89ef62ce7 | 20 | PinName port_pin(PortName port, int pin_n) { |
emilmont | 10:3bc89ef62ce7 | 21 | return (PinName)((port << PORT_SHIFT) | pin_n); |
emilmont | 10:3bc89ef62ce7 | 22 | } |
emilmont | 10:3bc89ef62ce7 | 23 | |
emilmont | 10:3bc89ef62ce7 | 24 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { |
emilmont | 10:3bc89ef62ce7 | 25 | obj->port = port; |
emilmont | 10:3bc89ef62ce7 | 26 | obj->mask = mask; |
emilmont | 10:3bc89ef62ce7 | 27 | |
emilmont | 10:3bc89ef62ce7 | 28 | LPC_GPIO->MASK[port] = ~mask; |
emilmont | 10:3bc89ef62ce7 | 29 | |
emilmont | 10:3bc89ef62ce7 | 30 | obj->reg_mpin = &LPC_GPIO->MPIN[port]; |
emilmont | 10:3bc89ef62ce7 | 31 | obj->reg_dir = &LPC_GPIO->DIR[port]; |
emilmont | 10:3bc89ef62ce7 | 32 | |
emilmont | 10:3bc89ef62ce7 | 33 | uint32_t i; |
emilmont | 10:3bc89ef62ce7 | 34 | // The function is set per pin: reuse gpio logic |
emilmont | 10:3bc89ef62ce7 | 35 | for (i=0; i<32; i++) { |
emilmont | 10:3bc89ef62ce7 | 36 | if (obj->mask & (1<<i)) { |
emilmont | 10:3bc89ef62ce7 | 37 | gpio_set(port_pin(obj->port, i)); |
emilmont | 10:3bc89ef62ce7 | 38 | } |
emilmont | 10:3bc89ef62ce7 | 39 | } |
emilmont | 10:3bc89ef62ce7 | 40 | |
emilmont | 10:3bc89ef62ce7 | 41 | port_dir(obj, dir); |
emilmont | 10:3bc89ef62ce7 | 42 | } |
emilmont | 10:3bc89ef62ce7 | 43 | |
emilmont | 10:3bc89ef62ce7 | 44 | void port_mode(port_t *obj, PinMode mode) { |
emilmont | 10:3bc89ef62ce7 | 45 | uint32_t i; |
emilmont | 10:3bc89ef62ce7 | 46 | // The mode is set per pin: reuse pinmap logic |
emilmont | 10:3bc89ef62ce7 | 47 | for (i=0; i<32; i++) { |
emilmont | 10:3bc89ef62ce7 | 48 | if (obj->mask & (1<<i)) { |
emilmont | 10:3bc89ef62ce7 | 49 | pin_mode(port_pin(obj->port, i), mode); |
emilmont | 10:3bc89ef62ce7 | 50 | } |
emilmont | 10:3bc89ef62ce7 | 51 | } |
emilmont | 10:3bc89ef62ce7 | 52 | } |
emilmont | 10:3bc89ef62ce7 | 53 | |
emilmont | 10:3bc89ef62ce7 | 54 | void port_dir(port_t *obj, PinDirection dir) { |
emilmont | 10:3bc89ef62ce7 | 55 | switch (dir) { |
emilmont | 10:3bc89ef62ce7 | 56 | case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break; |
emilmont | 10:3bc89ef62ce7 | 57 | case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; |
emilmont | 10:3bc89ef62ce7 | 58 | } |
emilmont | 10:3bc89ef62ce7 | 59 | } |
emilmont | 10:3bc89ef62ce7 | 60 | |
emilmont | 10:3bc89ef62ce7 | 61 | void port_write(port_t *obj, int value) { |
emilmont | 10:3bc89ef62ce7 | 62 | *obj->reg_mpin = value; |
emilmont | 10:3bc89ef62ce7 | 63 | } |
emilmont | 10:3bc89ef62ce7 | 64 | |
emilmont | 10:3bc89ef62ce7 | 65 | int port_read(port_t *obj) { |
emilmont | 10:3bc89ef62ce7 | 66 | return (*obj->reg_mpin); |
emilmont | 10:3bc89ef62ce7 | 67 | } |