mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
149:156823d33999 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 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
<> 144:ef7eb2e8f9f7 17 #include "port_api.h"
<> 144:ef7eb2e8f9f7 18 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 19 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 // LPC114 IOCON offset table [port][pin]
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 static uint8_t iocon_offset[4][12] = {
<> 144:ef7eb2e8f9f7 24 {0x0c,0x10,0x1c,0x2c,0x30,0x34,0x4c,0x50,0x60,0x64,0x68,0x74}, // PORT 0
<> 144:ef7eb2e8f9f7 25 {0x78,0x7c,0x80,0x90,0x94,0xa0,0xa4,0xa8,0x14,0x38,0x6c,0x98}, // PORT 1
<> 144:ef7eb2e8f9f7 26 {0x08,0x28,0x5c,0x8c,0x40,0x44,0x00,0x20,0x24,0x54,0x58,0x70}, // PORT 2
<> 144:ef7eb2e8f9f7 27 {0x84,0x88,0x9c,0xac,0x3c,0x48} // PORT 3
<> 144:ef7eb2e8f9f7 28 };
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 PinName port_pin(PortName port, int pin) {
<> 144:ef7eb2e8f9f7 31 return (PinName)((port << PORT_SHIFT) | (pin << PIN_SHIFT) | (uint32_t)iocon_offset[port][pin]);
<> 144:ef7eb2e8f9f7 32 }
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
<> 144:ef7eb2e8f9f7 35 obj->port = port;
<> 144:ef7eb2e8f9f7 36 obj->mask = mask;
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (port * 0x10000)));
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 obj->reg_data = &port_reg->DATA;
<> 144:ef7eb2e8f9f7 41 obj->reg_dir = &port_reg->DIR;
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 uint32_t i;
<> 144:ef7eb2e8f9f7 44 // The function is set per pin: reuse gpio logic
<> 144:ef7eb2e8f9f7 45 for (i=0; i<12; i++) {
<> 144:ef7eb2e8f9f7 46 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 47 gpio_set(port_pin(obj->port, i));
<> 144:ef7eb2e8f9f7 48 }
<> 144:ef7eb2e8f9f7 49 }
<> 144:ef7eb2e8f9f7 50
<> 144:ef7eb2e8f9f7 51 port_dir(obj, dir);
<> 144:ef7eb2e8f9f7 52 }
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 void port_mode(port_t *obj, PinMode mode) {
<> 144:ef7eb2e8f9f7 55 uint32_t i;
<> 144:ef7eb2e8f9f7 56 // The mode is set per pin: reuse pinmap logic
<> 144:ef7eb2e8f9f7 57 for (i=0; i<12; i++) {
<> 144:ef7eb2e8f9f7 58 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 59 pin_mode(port_pin(obj->port, i), mode);
<> 144:ef7eb2e8f9f7 60 }
<> 144:ef7eb2e8f9f7 61 }
<> 144:ef7eb2e8f9f7 62 }
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 void port_dir(port_t *obj, PinDirection dir) {
<> 144:ef7eb2e8f9f7 65 switch (dir) {
<> 144:ef7eb2e8f9f7 66 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
<> 144:ef7eb2e8f9f7 67 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
<> 144:ef7eb2e8f9f7 68 }
<> 144:ef7eb2e8f9f7 69 }
<> 144:ef7eb2e8f9f7 70
<> 144:ef7eb2e8f9f7 71 void port_write(port_t *obj, int value) {
<> 144:ef7eb2e8f9f7 72 *obj->reg_data = (value & obj->mask);
<> 144:ef7eb2e8f9f7 73 }
<> 144:ef7eb2e8f9f7 74
<> 144:ef7eb2e8f9f7 75 int port_read(port_t *obj) {
<> 144:ef7eb2e8f9f7 76 return (*obj->reg_data & obj->mask);
<> 144:ef7eb2e8f9f7 77 }
<> 144:ef7eb2e8f9f7 78