Jing Qiu / mbed

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Fork of mbed by gokmen ascioglu

Serial.h@0:a8fa94490a0a, 2012-09-22 (annotated)

Committer:
gokmenascioglu
Date:
Sat Sep 22 10:32:07 2012 +0000
Revision:
0:a8fa94490a0a
alican library

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gokmenascioglu 0:a8fa94490a0a 1 /* mbed Microcontroller Library - Serial
gokmenascioglu 0:a8fa94490a0a 2 * Copyright (c) 2007-2011 ARM Limited. All rights reserved.
gokmenascioglu 0:a8fa94490a0a 3 */
gokmenascioglu 0:a8fa94490a0a 4
gokmenascioglu 0:a8fa94490a0a 5 #ifndef MBED_SERIAL_H
gokmenascioglu 0:a8fa94490a0a 6 #define MBED_SERIAL_H
gokmenascioglu 0:a8fa94490a0a 7
gokmenascioglu 0:a8fa94490a0a 8 #include "device.h"
gokmenascioglu 0:a8fa94490a0a 9
gokmenascioglu 0:a8fa94490a0a 10 #if DEVICE_SERIAL
gokmenascioglu 0:a8fa94490a0a 11
gokmenascioglu 0:a8fa94490a0a 12 #include "platform.h"
gokmenascioglu 0:a8fa94490a0a 13 #include "PinNames.h"
gokmenascioglu 0:a8fa94490a0a 14 #include "PeripheralNames.h"
gokmenascioglu 0:a8fa94490a0a 15 #include "Stream.h"
gokmenascioglu 0:a8fa94490a0a 16 #include "FunctionPointer.h"
gokmenascioglu 0:a8fa94490a0a 17
gokmenascioglu 0:a8fa94490a0a 18 namespace mbed {
gokmenascioglu 0:a8fa94490a0a 19
gokmenascioglu 0:a8fa94490a0a 20 /* Class: Serial
gokmenascioglu 0:a8fa94490a0a 21 * A serial port (UART) for communication with other serial devices
gokmenascioglu 0:a8fa94490a0a 22 *
gokmenascioglu 0:a8fa94490a0a 23 * Can be used for Full Duplex communication, or Simplex by specifying
gokmenascioglu 0:a8fa94490a0a 24 * one pin as NC (Not Connected)
gokmenascioglu 0:a8fa94490a0a 25 *
gokmenascioglu 0:a8fa94490a0a 26 * Example:
gokmenascioglu 0:a8fa94490a0a 27 * > // Print "Hello World" to the PC
gokmenascioglu 0:a8fa94490a0a 28 * >
gokmenascioglu 0:a8fa94490a0a 29 * > #include "mbed.h"
gokmenascioglu 0:a8fa94490a0a 30 * >
gokmenascioglu 0:a8fa94490a0a 31 * > Serial pc(USBTX, USBRX);
gokmenascioglu 0:a8fa94490a0a 32 * >
gokmenascioglu 0:a8fa94490a0a 33 * > int main() {
gokmenascioglu 0:a8fa94490a0a 34 * > pc.printf("Hello World\n");
gokmenascioglu 0:a8fa94490a0a 35 * > }
gokmenascioglu 0:a8fa94490a0a 36 */
gokmenascioglu 0:a8fa94490a0a 37 class Serial : public Stream {
gokmenascioglu 0:a8fa94490a0a 38
gokmenascioglu 0:a8fa94490a0a 39 public:
gokmenascioglu 0:a8fa94490a0a 40
gokmenascioglu 0:a8fa94490a0a 41 /* Constructor: Serial
gokmenascioglu 0:a8fa94490a0a 42 * Create a Serial port, connected to the specified transmit and receive pins
gokmenascioglu 0:a8fa94490a0a 43 *
gokmenascioglu 0:a8fa94490a0a 44 * Variables:
gokmenascioglu 0:a8fa94490a0a 45 * tx - Transmit pin
gokmenascioglu 0:a8fa94490a0a 46 * rx - Receive pin
gokmenascioglu 0:a8fa94490a0a 47 *
gokmenascioglu 0:a8fa94490a0a 48 * Note: Either tx or rx may be specified as NC if unused
gokmenascioglu 0:a8fa94490a0a 49 */
gokmenascioglu 0:a8fa94490a0a 50 Serial(PinName tx, PinName rx, const char *name = NULL);
gokmenascioglu 0:a8fa94490a0a 51
gokmenascioglu 0:a8fa94490a0a 52 /* Function: baud
gokmenascioglu 0:a8fa94490a0a 53 * Set the baud rate of the serial port
gokmenascioglu 0:a8fa94490a0a 54 *
gokmenascioglu 0:a8fa94490a0a 55 * Variables:
gokmenascioglu 0:a8fa94490a0a 56 * baudrate - The baudrate of the serial port (default = 9600).
gokmenascioglu 0:a8fa94490a0a 57 */
gokmenascioglu 0:a8fa94490a0a 58 void baud(int baudrate);
gokmenascioglu 0:a8fa94490a0a 59
gokmenascioglu 0:a8fa94490a0a 60 enum Parity {
gokmenascioglu 0:a8fa94490a0a 61 None = 0
gokmenascioglu 0:a8fa94490a0a 62 , Odd
gokmenascioglu 0:a8fa94490a0a 63 , Even
gokmenascioglu 0:a8fa94490a0a 64 , Forced1
gokmenascioglu 0:a8fa94490a0a 65 , Forced0
gokmenascioglu 0:a8fa94490a0a 66 };
gokmenascioglu 0:a8fa94490a0a 67
gokmenascioglu 0:a8fa94490a0a 68 enum IrqType {
gokmenascioglu 0:a8fa94490a0a 69 RxIrq = 0
gokmenascioglu 0:a8fa94490a0a 70 , TxIrq
gokmenascioglu 0:a8fa94490a0a 71 };
gokmenascioglu 0:a8fa94490a0a 72
gokmenascioglu 0:a8fa94490a0a 73 /* Function: format
gokmenascioglu 0:a8fa94490a0a 74 * Set the transmission format used by the Serial port
gokmenascioglu 0:a8fa94490a0a 75 *
gokmenascioglu 0:a8fa94490a0a 76 * Variables:
gokmenascioglu 0:a8fa94490a0a 77 * bits - The number of bits in a word (5-8; default = 8)
gokmenascioglu 0:a8fa94490a0a 78 * parity - The parity used (Serial::None, Serial::Odd, Serial::Even, Serial::Forced1, Serial::Forced0; default = Serial::None)
gokmenascioglu 0:a8fa94490a0a 79 * stop - The number of stop bits (1 or 2; default = 1)
gokmenascioglu 0:a8fa94490a0a 80 */
gokmenascioglu 0:a8fa94490a0a 81 void format(int bits = 8, Parity parity = Serial::None, int stop_bits = 1);
gokmenascioglu 0:a8fa94490a0a 82
gokmenascioglu 0:a8fa94490a0a 83 #if 0 // Inhereted from Stream, for documentation only
gokmenascioglu 0:a8fa94490a0a 84
gokmenascioglu 0:a8fa94490a0a 85 /* Function: putc
gokmenascioglu 0:a8fa94490a0a 86 * Write a character
gokmenascioglu 0:a8fa94490a0a 87 *
gokmenascioglu 0:a8fa94490a0a 88 * Variables:
gokmenascioglu 0:a8fa94490a0a 89 * c - The character to write to the serial port
gokmenascioglu 0:a8fa94490a0a 90 */
gokmenascioglu 0:a8fa94490a0a 91 int putc(int c);
gokmenascioglu 0:a8fa94490a0a 92
gokmenascioglu 0:a8fa94490a0a 93 /* Function: getc
gokmenascioglu 0:a8fa94490a0a 94 * Read a character
gokmenascioglu 0:a8fa94490a0a 95 *
gokmenascioglu 0:a8fa94490a0a 96 * Reads a character from the serial port. This will block until
gokmenascioglu 0:a8fa94490a0a 97 * a character is available. To see if a character is available,
gokmenascioglu 0:a8fa94490a0a 98 * see <readable>
gokmenascioglu 0:a8fa94490a0a 99 *
gokmenascioglu 0:a8fa94490a0a 100 * Variables:
gokmenascioglu 0:a8fa94490a0a 101 * returns - The character read from the serial port
gokmenascioglu 0:a8fa94490a0a 102 */
gokmenascioglu 0:a8fa94490a0a 103 int getc();
gokmenascioglu 0:a8fa94490a0a 104
gokmenascioglu 0:a8fa94490a0a 105 /* Function: printf
gokmenascioglu 0:a8fa94490a0a 106 * Write a formated string
gokmenascioglu 0:a8fa94490a0a 107 *
gokmenascioglu 0:a8fa94490a0a 108 * Variables:
gokmenascioglu 0:a8fa94490a0a 109 * format - A printf-style format string, followed by the
gokmenascioglu 0:a8fa94490a0a 110 * variables to use in formating the string.
gokmenascioglu 0:a8fa94490a0a 111 */
gokmenascioglu 0:a8fa94490a0a 112 int printf(const char* format, ...);
gokmenascioglu 0:a8fa94490a0a 113
gokmenascioglu 0:a8fa94490a0a 114 /* Function: scanf
gokmenascioglu 0:a8fa94490a0a 115 * Read a formated string
gokmenascioglu 0:a8fa94490a0a 116 *
gokmenascioglu 0:a8fa94490a0a 117 * Variables:
gokmenascioglu 0:a8fa94490a0a 118 * format - A scanf-style format string,
gokmenascioglu 0:a8fa94490a0a 119 * followed by the pointers to variables to store the results.
gokmenascioglu 0:a8fa94490a0a 120 */
gokmenascioglu 0:a8fa94490a0a 121 int scanf(const char* format, ...);
gokmenascioglu 0:a8fa94490a0a 122
gokmenascioglu 0:a8fa94490a0a 123 #endif
gokmenascioglu 0:a8fa94490a0a 124
gokmenascioglu 0:a8fa94490a0a 125 /* Function: readable
gokmenascioglu 0:a8fa94490a0a 126 * Determine if there is a character available to read
gokmenascioglu 0:a8fa94490a0a 127 *
gokmenascioglu 0:a8fa94490a0a 128 * Variables:
gokmenascioglu 0:a8fa94490a0a 129 * returns - 1 if there is a character available to read, else 0
gokmenascioglu 0:a8fa94490a0a 130 */
gokmenascioglu 0:a8fa94490a0a 131 int readable();
gokmenascioglu 0:a8fa94490a0a 132
gokmenascioglu 0:a8fa94490a0a 133 /* Function: writeable
gokmenascioglu 0:a8fa94490a0a 134 * Determine if there is space available to write a character
gokmenascioglu 0:a8fa94490a0a 135 *
gokmenascioglu 0:a8fa94490a0a 136 * Variables:
gokmenascioglu 0:a8fa94490a0a 137 * returns - 1 if there is space to write a character, else 0
gokmenascioglu 0:a8fa94490a0a 138 */
gokmenascioglu 0:a8fa94490a0a 139 int writeable();
gokmenascioglu 0:a8fa94490a0a 140
gokmenascioglu 0:a8fa94490a0a 141 /* Function: attach
gokmenascioglu 0:a8fa94490a0a 142 * Attach a function to call whenever a serial interrupt is generated
gokmenascioglu 0:a8fa94490a0a 143 *
gokmenascioglu 0:a8fa94490a0a 144 * Variables:
gokmenascioglu 0:a8fa94490a0a 145 * fptr - A pointer to a void function, or 0 to set as none
gokmenascioglu 0:a8fa94490a0a 146 * type - Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
gokmenascioglu 0:a8fa94490a0a 147 */
gokmenascioglu 0:a8fa94490a0a 148 void attach(void (*fptr)(void), IrqType type = RxIrq);
gokmenascioglu 0:a8fa94490a0a 149
gokmenascioglu 0:a8fa94490a0a 150 /* Function: attach
gokmenascioglu 0:a8fa94490a0a 151 * Attach a member function to call whenever a serial interrupt is generated
gokmenascioglu 0:a8fa94490a0a 152 *
gokmenascioglu 0:a8fa94490a0a 153 * Variables:
gokmenascioglu 0:a8fa94490a0a 154 * tptr - pointer to the object to call the member function on
gokmenascioglu 0:a8fa94490a0a 155 * mptr - pointer to the member function to be called
gokmenascioglu 0:a8fa94490a0a 156 * type - Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
gokmenascioglu 0:a8fa94490a0a 157 */
gokmenascioglu 0:a8fa94490a0a 158 template<typename T>
gokmenascioglu 0:a8fa94490a0a 159 void attach(T* tptr, void (T::*mptr)(void), IrqType type = RxIrq) {
gokmenascioglu 0:a8fa94490a0a 160 if((mptr != NULL) && (tptr != NULL)) {
gokmenascioglu 0:a8fa94490a0a 161 _irq[type].attach(tptr, mptr);
gokmenascioglu 0:a8fa94490a0a 162 setup_interrupt(type);
gokmenascioglu 0:a8fa94490a0a 163 }
gokmenascioglu 0:a8fa94490a0a 164 }
gokmenascioglu 0:a8fa94490a0a 165
gokmenascioglu 0:a8fa94490a0a 166 #ifdef MBED_RPC
gokmenascioglu 0:a8fa94490a0a 167 virtual const struct rpc_method *get_rpc_methods();
gokmenascioglu 0:a8fa94490a0a 168 static struct rpc_class *get_rpc_class();
gokmenascioglu 0:a8fa94490a0a 169 #endif
gokmenascioglu 0:a8fa94490a0a 170
gokmenascioglu 0:a8fa94490a0a 171 protected:
gokmenascioglu 0:a8fa94490a0a 172
gokmenascioglu 0:a8fa94490a0a 173 void setup_interrupt(IrqType type);
gokmenascioglu 0:a8fa94490a0a 174 void remove_interrupt(IrqType type);
gokmenascioglu 0:a8fa94490a0a 175
gokmenascioglu 0:a8fa94490a0a 176 virtual int _getc();
gokmenascioglu 0:a8fa94490a0a 177 virtual int _putc(int c);
gokmenascioglu 0:a8fa94490a0a 178
gokmenascioglu 0:a8fa94490a0a 179 UARTName _uart;
gokmenascioglu 0:a8fa94490a0a 180 FunctionPointer _irq[2];
gokmenascioglu 0:a8fa94490a0a 181 int _uidx;
gokmenascioglu 0:a8fa94490a0a 182
gokmenascioglu 0:a8fa94490a0a 183 };
gokmenascioglu 0:a8fa94490a0a 184
gokmenascioglu 0:a8fa94490a0a 185 } // namespace mbed
gokmenascioglu 0:a8fa94490a0a 186
gokmenascioglu 0:a8fa94490a0a 187 #endif
gokmenascioglu 0:a8fa94490a0a 188
gokmenascioglu 0:a8fa94490a0a 189 #endif