Lcd companion boards support (VKLCD50RTA & VKLCD70RT)
Embed:
(wiki syntax)
Show/hide line numbers
PortOut.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #ifndef MBED_PORTOUT_H 00017 #define MBED_PORTOUT_H 00018 00019 #include "platform.h" 00020 00021 #if DEVICE_PORTOUT 00022 00023 #include "port_api.h" 00024 #include "critical.h" 00025 00026 namespace mbed { 00027 /** A multiple pin digital out 00028 * 00029 * @Note Synchronization level: Interrupt safe 00030 * 00031 * Example: 00032 * @code 00033 * // Toggle all four LEDs 00034 * 00035 * #include "mbed.h" 00036 * 00037 * // LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23 00038 * #define LED_MASK 0x00B40000 00039 * 00040 * PortOut ledport(Port1, LED_MASK); 00041 * 00042 * int main() { 00043 * while(1) { 00044 * ledport = LED_MASK; 00045 * wait(1); 00046 * ledport = 0; 00047 * wait(1); 00048 * } 00049 * } 00050 * @endcode 00051 */ 00052 class PortOut { 00053 public: 00054 00055 /** Create an PortOut, connected to the specified port 00056 * 00057 * @param port Port to connect to (Port0-Port5) 00058 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore) 00059 */ 00060 PortOut(PortName port, int mask = 0xFFFFFFFF) { 00061 core_util_critical_section_enter(); 00062 port_init(&_port, port, mask, PIN_OUTPUT); 00063 core_util_critical_section_exit(); 00064 } 00065 00066 /** Write the value to the output port 00067 * 00068 * @param value An integer specifying a bit to write for every corresponding PortOut pin 00069 */ 00070 void write(int value) { 00071 port_write(&_port, value); 00072 } 00073 00074 /** Read the value currently output on the port 00075 * 00076 * @returns 00077 * An integer with each bit corresponding to associated PortOut pin setting 00078 */ 00079 int read() { 00080 return port_read(&_port); 00081 } 00082 00083 /** A shorthand for write() 00084 */ 00085 PortOut& operator= (int value) { 00086 write(value); 00087 return *this; 00088 } 00089 00090 PortOut& operator= (PortOut& rhs) { 00091 write(rhs.read()); 00092 return *this; 00093 } 00094 00095 /** A shorthand for read() 00096 */ 00097 operator int() { 00098 return read(); 00099 } 00100 00101 private: 00102 port_t _port; 00103 }; 00104 00105 } // namespace mbed 00106 00107 #endif 00108 00109 #endif 00110
Generated on Tue Jul 12 2022 14:32:44 by 1.7.2