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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_NXP/TARGET_LPC23XX/port_api.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2013 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Licensed under the Apache License, Version 2.0 (the "License");
group-onsemi 0:098463de4c5d 5 * you may not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 6 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 9 *
group-onsemi 0:098463de4c5d 10 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 11 * distributed under the License is distributed on an "AS IS" BASIS,
group-onsemi 0:098463de4c5d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 13 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 14 * limitations under the License.
group-onsemi 0:098463de4c5d 15 */
group-onsemi 0:098463de4c5d 16 #include "port_api.h"
group-onsemi 0:098463de4c5d 17 #include "pinmap.h"
group-onsemi 0:098463de4c5d 18 #include "gpio_api.h"
group-onsemi 0:098463de4c5d 19
group-onsemi 0:098463de4c5d 20 PinName port_pin(PortName port, int pin_n) {
group-onsemi 0:098463de4c5d 21 return (PinName)(LPC_GPIO0_BASE + ((port << PORT_SHIFT) | pin_n));
group-onsemi 0:098463de4c5d 22 }
group-onsemi 0:098463de4c5d 23
group-onsemi 0:098463de4c5d 24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
group-onsemi 0:098463de4c5d 25 obj->port = port;
group-onsemi 0:098463de4c5d 26 obj->mask = mask;
group-onsemi 0:098463de4c5d 27
group-onsemi 0:098463de4c5d 28 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)(LPC_GPIO0_BASE + ((int)port * 0x20));
group-onsemi 0:098463de4c5d 29
group-onsemi 0:098463de4c5d 30 // Do not use masking, because it prevents the use of the unmasked pins
group-onsemi 0:098463de4c5d 31 // port_reg->FIOMASK = ~mask;
group-onsemi 0:098463de4c5d 32
group-onsemi 0:098463de4c5d 33 obj->reg_out = &port_reg->FIOPIN;
group-onsemi 0:098463de4c5d 34 obj->reg_in = &port_reg->FIOPIN;
group-onsemi 0:098463de4c5d 35 obj->reg_dir = &port_reg->FIODIR;
group-onsemi 0:098463de4c5d 36
group-onsemi 0:098463de4c5d 37 uint32_t i;
group-onsemi 0:098463de4c5d 38 // The function is set per pin: reuse gpio logic
group-onsemi 0:098463de4c5d 39 for (i=0; i<32; i++) {
group-onsemi 0:098463de4c5d 40 if (obj->mask & (1<<i)) {
group-onsemi 0:098463de4c5d 41 gpio_set(port_pin(obj->port, i));
group-onsemi 0:098463de4c5d 42 }
group-onsemi 0:098463de4c5d 43 }
group-onsemi 0:098463de4c5d 44
group-onsemi 0:098463de4c5d 45 port_dir(obj, dir);
group-onsemi 0:098463de4c5d 46 }
group-onsemi 0:098463de4c5d 47
group-onsemi 0:098463de4c5d 48 void port_mode(port_t *obj, PinMode mode) {
group-onsemi 0:098463de4c5d 49 uint32_t i;
group-onsemi 0:098463de4c5d 50 // The mode is set per pin: reuse pinmap logic
group-onsemi 0:098463de4c5d 51 for (i=0; i<32; i++) {
group-onsemi 0:098463de4c5d 52 if (obj->mask & (1<<i)) {
group-onsemi 0:098463de4c5d 53 pin_mode(port_pin(obj->port, i), mode);
group-onsemi 0:098463de4c5d 54 }
group-onsemi 0:098463de4c5d 55 }
group-onsemi 0:098463de4c5d 56 }
group-onsemi 0:098463de4c5d 57
group-onsemi 0:098463de4c5d 58 void port_dir(port_t *obj, PinDirection dir) {
group-onsemi 0:098463de4c5d 59 switch (dir) {
group-onsemi 0:098463de4c5d 60 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
group-onsemi 0:098463de4c5d 61 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
group-onsemi 0:098463de4c5d 62 }
group-onsemi 0:098463de4c5d 63 }
group-onsemi 0:098463de4c5d 64
group-onsemi 0:098463de4c5d 65 void port_write(port_t *obj, int value) {
group-onsemi 0:098463de4c5d 66 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
group-onsemi 0:098463de4c5d 67 }
group-onsemi 0:098463de4c5d 68
group-onsemi 0:098463de4c5d 69 int port_read(port_t *obj) {
group-onsemi 0:098463de4c5d 70 return (*obj->reg_in & obj->mask);
group-onsemi 0:098463de4c5d 71 }