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Serial.h@43:e2ed12d17f06, 2012-10-26 (annotated)

Committer:
emilmont
Date:
Fri Oct 26 17:40:46 2012 +0100
Revision:
43:e2ed12d17f06
Parent:
27:7110ebee3484
Child:
44:24d45a770a51
Update documentation

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rolf.meyer@arm.com 11:1c1ebd0324fa 1 /* mbed Microcontroller Library - Serial
emilmont 27:7110ebee3484 2 * Copyright (c) 2007-2011 ARM Limited. All rights reserved.
rolf.meyer@arm.com 11:1c1ebd0324fa 3 */
rolf.meyer@arm.com 11:1c1ebd0324fa 4
rolf.meyer@arm.com 11:1c1ebd0324fa 5 #ifndef MBED_SERIAL_H
rolf.meyer@arm.com 11:1c1ebd0324fa 6 #define MBED_SERIAL_H
rolf.meyer@arm.com 11:1c1ebd0324fa 7
emilmont 27:7110ebee3484 8 #include "device.h"
emilmont 27:7110ebee3484 9
emilmont 27:7110ebee3484 10 #if DEVICE_SERIAL
emilmont 27:7110ebee3484 11
rolf.meyer@arm.com 11:1c1ebd0324fa 12 #include "platform.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 13 #include "PinNames.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 14 #include "PeripheralNames.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 15 #include "Stream.h"
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 16 #include "FunctionPointer.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 17
rolf.meyer@arm.com 11:1c1ebd0324fa 18 namespace mbed {
rolf.meyer@arm.com 11:1c1ebd0324fa 19
emilmont 43:e2ed12d17f06 20 /** A serial port (UART) for communication with other serial devices
rolf.meyer@arm.com 11:1c1ebd0324fa 21 *
emilmont 43:e2ed12d17f06 22 * Can be used for Full Duplex communication, or Simplex by specifying
emilmont 43:e2ed12d17f06 23 * one pin as NC (Not Connected)
emilmont 27:7110ebee3484 24 *
rolf.meyer@arm.com 11:1c1ebd0324fa 25 * Example:
emilmont 43:e2ed12d17f06 26 * @code
emilmont 43:e2ed12d17f06 27 * // Print "Hello World" to the PC
emilmont 43:e2ed12d17f06 28 *
emilmont 43:e2ed12d17f06 29 * #include "mbed.h"
emilmont 43:e2ed12d17f06 30 *
emilmont 43:e2ed12d17f06 31 * Serial pc(USBTX, USBRX);
emilmont 43:e2ed12d17f06 32 *
emilmont 43:e2ed12d17f06 33 * int main() {
emilmont 43:e2ed12d17f06 34 * pc.printf("Hello World\n");
emilmont 43:e2ed12d17f06 35 * }
emilmont 43:e2ed12d17f06 36 * @endcode
rolf.meyer@arm.com 11:1c1ebd0324fa 37 */
rolf.meyer@arm.com 11:1c1ebd0324fa 38 class Serial : public Stream {
rolf.meyer@arm.com 11:1c1ebd0324fa 39
rolf.meyer@arm.com 11:1c1ebd0324fa 40 public:
rolf.meyer@arm.com 11:1c1ebd0324fa 41
emilmont 43:e2ed12d17f06 42 /** Create a Serial port, connected to the specified transmit and receive pins
rolf.meyer@arm.com 11:1c1ebd0324fa 43 *
emilmont 43:e2ed12d17f06 44 * @param tx Transmit pin
emilmont 43:e2ed12d17f06 45 * @param rx Receive pin
rolf.meyer@arm.com 11:1c1ebd0324fa 46 *
emilmont 43:e2ed12d17f06 47 * @note
emilmont 43:e2ed12d17f06 48 * Either tx or rx may be specified as NC if unused
rolf.meyer@arm.com 11:1c1ebd0324fa 49 */
rolf.meyer@arm.com 11:1c1ebd0324fa 50 Serial(PinName tx, PinName rx, const char *name = NULL);
rolf.meyer@arm.com 11:1c1ebd0324fa 51
emilmont 43:e2ed12d17f06 52 /** Set the baud rate of the serial port
rolf.meyer@arm.com 11:1c1ebd0324fa 53 *
emilmont 43:e2ed12d17f06 54 * @param baudrate The baudrate of the serial port (default = 9600).
rolf.meyer@arm.com 11:1c1ebd0324fa 55 */
rolf.meyer@arm.com 11:1c1ebd0324fa 56 void baud(int baudrate);
rolf.meyer@arm.com 11:1c1ebd0324fa 57
rolf.meyer@arm.com 11:1c1ebd0324fa 58 enum Parity {
rolf.meyer@arm.com 11:1c1ebd0324fa 59 None = 0
rolf.meyer@arm.com 11:1c1ebd0324fa 60 , Odd
rolf.meyer@arm.com 11:1c1ebd0324fa 61 , Even
rolf.meyer@arm.com 11:1c1ebd0324fa 62 , Forced1
rolf.meyer@arm.com 11:1c1ebd0324fa 63 , Forced0
rolf.meyer@arm.com 11:1c1ebd0324fa 64 };
rolf.meyer@arm.com 11:1c1ebd0324fa 65
simon 21:3944f1e2fa4f 66 enum IrqType {
simon 21:3944f1e2fa4f 67 RxIrq = 0
simon 21:3944f1e2fa4f 68 , TxIrq
simon 21:3944f1e2fa4f 69 };
simon 21:3944f1e2fa4f 70
emilmont 43:e2ed12d17f06 71 /** Set the transmission format used by the Serial port
rolf.meyer@arm.com 11:1c1ebd0324fa 72 *
emilmont 43:e2ed12d17f06 73 * @param bits The number of bits in a word (5-8; default = 8)
emilmont 43:e2ed12d17f06 74 * @param parity The parity used (Serial::None, Serial::Odd, Serial::Even, Serial::Forced1, Serial::Forced0; default = Serial::None)
emilmont 43:e2ed12d17f06 75 * @param stop The number of stop bits (1 or 2; default = 1)
rolf.meyer@arm.com 11:1c1ebd0324fa 76 */
rolf.meyer@arm.com 11:1c1ebd0324fa 77 void format(int bits = 8, Parity parity = Serial::None, int stop_bits = 1);
rolf.meyer@arm.com 11:1c1ebd0324fa 78
rolf.meyer@arm.com 11:1c1ebd0324fa 79 #if 0 // Inhereted from Stream, for documentation only
rolf.meyer@arm.com 11:1c1ebd0324fa 80
emilmont 43:e2ed12d17f06 81 /** Write a character
rolf.meyer@arm.com 11:1c1ebd0324fa 82 *
emilmont 43:e2ed12d17f06 83 * @param c The character to write to the serial port
rolf.meyer@arm.com 11:1c1ebd0324fa 84 */
rolf.meyer@arm.com 11:1c1ebd0324fa 85 int putc(int c);
rolf.meyer@arm.com 11:1c1ebd0324fa 86
emilmont 43:e2ed12d17f06 87 /** Reads a character from the serial port. This will block until
emilmont 43:e2ed12d17f06 88 * a character is available. To see if a character is available,
emilmont 43:e2ed12d17f06 89 * see readable()
rolf.meyer@arm.com 11:1c1ebd0324fa 90 *
emilmont 43:e2ed12d17f06 91 * @returns
emilmont 43:e2ed12d17f06 92 * The character read from the serial port
rolf.meyer@arm.com 11:1c1ebd0324fa 93 */
rolf.meyer@arm.com 11:1c1ebd0324fa 94 int getc();
rolf.meyer@arm.com 11:1c1ebd0324fa 95
emilmont 43:e2ed12d17f06 96 /** Write a formated string
rolf.meyer@arm.com 11:1c1ebd0324fa 97 *
emilmont 43:e2ed12d17f06 98 * @param format A printf-style format string, followed by the
emilmont 43:e2ed12d17f06 99 * variables to use in formating the string.
rolf.meyer@arm.com 11:1c1ebd0324fa 100 */
rolf.meyer@arm.com 11:1c1ebd0324fa 101 int printf(const char* format, ...);
rolf.meyer@arm.com 11:1c1ebd0324fa 102
emilmont 43:e2ed12d17f06 103 /** Read a formated string
rolf.meyer@arm.com 11:1c1ebd0324fa 104 *
emilmont 43:e2ed12d17f06 105 * @param format A scanf-style format string,
emilmont 43:e2ed12d17f06 106 * followed by the pointers to variables to store the results.
rolf.meyer@arm.com 11:1c1ebd0324fa 107 */
rolf.meyer@arm.com 11:1c1ebd0324fa 108 int scanf(const char* format, ...);
rolf.meyer@arm.com 11:1c1ebd0324fa 109
rolf.meyer@arm.com 11:1c1ebd0324fa 110 #endif
rolf.meyer@arm.com 11:1c1ebd0324fa 111
emilmont 43:e2ed12d17f06 112 /** Determine if there is a character available to read
rolf.meyer@arm.com 11:1c1ebd0324fa 113 *
emilmont 43:e2ed12d17f06 114 * @returns
emilmont 43:e2ed12d17f06 115 * 1 if there is a character available to read,
emilmont 43:e2ed12d17f06 116 * 0 otherwise
rolf.meyer@arm.com 11:1c1ebd0324fa 117 */
rolf.meyer@arm.com 11:1c1ebd0324fa 118 int readable();
rolf.meyer@arm.com 11:1c1ebd0324fa 119
emilmont 43:e2ed12d17f06 120 /** Determine if there is space available to write a character
rolf.meyer@arm.com 11:1c1ebd0324fa 121 *
emilmont 43:e2ed12d17f06 122 * @returns
emilmont 43:e2ed12d17f06 123 * 1 if there is space to write a character,
emilmont 43:e2ed12d17f06 124 * 0 otherwise
rolf.meyer@arm.com 11:1c1ebd0324fa 125 */
rolf.meyer@arm.com 11:1c1ebd0324fa 126 int writeable();
rolf.meyer@arm.com 11:1c1ebd0324fa 127
emilmont 43:e2ed12d17f06 128 /** Attach a function to call whenever a serial interrupt is generated
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 129 *
emilmont 43:e2ed12d17f06 130 * @param fptr A pointer to a void function, or 0 to set as none
emilmont 43:e2ed12d17f06 131 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 132 */
simon 21:3944f1e2fa4f 133 void attach(void (*fptr)(void), IrqType type = RxIrq);
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 134
emilmont 43:e2ed12d17f06 135 /** Attach a member function to call whenever a serial interrupt is generated
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 136 *
emilmont 43:e2ed12d17f06 137 * @param tptr pointer to the object to call the member function on
emilmont 43:e2ed12d17f06 138 * @param mptr pointer to the member function to be called
emilmont 43:e2ed12d17f06 139 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 140 */
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 141 template<typename T>
simon 21:3944f1e2fa4f 142 void attach(T* tptr, void (T::*mptr)(void), IrqType type = RxIrq) {
simon 21:3944f1e2fa4f 143 if((mptr != NULL) && (tptr != NULL)) {
simon 21:3944f1e2fa4f 144 _irq[type].attach(tptr, mptr);
simon 21:3944f1e2fa4f 145 setup_interrupt(type);
simon 21:3944f1e2fa4f 146 }
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 147 }
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 148
rolf.meyer@arm.com 11:1c1ebd0324fa 149 #ifdef MBED_RPC
rolf.meyer@arm.com 11:1c1ebd0324fa 150 virtual const struct rpc_method *get_rpc_methods();
rolf.meyer@arm.com 11:1c1ebd0324fa 151 static struct rpc_class *get_rpc_class();
rolf.meyer@arm.com 11:1c1ebd0324fa 152 #endif
rolf.meyer@arm.com 11:1c1ebd0324fa 153
rolf.meyer@arm.com 11:1c1ebd0324fa 154 protected:
rolf.meyer@arm.com 11:1c1ebd0324fa 155
simon 21:3944f1e2fa4f 156 void setup_interrupt(IrqType type);
simon 21:3944f1e2fa4f 157 void remove_interrupt(IrqType type);
simon.ford@mbed.co.uk 15:d1a9de3f4fe0 158
rolf.meyer@arm.com 11:1c1ebd0324fa 159 virtual int _getc();
rolf.meyer@arm.com 11:1c1ebd0324fa 160 virtual int _putc(int c);
rolf.meyer@arm.com 11:1c1ebd0324fa 161
rolf.meyer@arm.com 11:1c1ebd0324fa 162 UARTName _uart;
simon 21:3944f1e2fa4f 163 FunctionPointer _irq[2];
simon 21:3944f1e2fa4f 164 int _uidx;
rolf.meyer@arm.com 11:1c1ebd0324fa 165
rolf.meyer@arm.com 11:1c1ebd0324fa 166 };
rolf.meyer@arm.com 11:1c1ebd0324fa 167
rolf.meyer@arm.com 11:1c1ebd0324fa 168 } // namespace mbed
rolf.meyer@arm.com 11:1c1ebd0324fa 169
rolf.meyer@arm.com 11:1c1ebd0324fa 170 #endif
rolf.meyer@arm.com 11:1c1ebd0324fa 171
emilmont 27:7110ebee3484 172 #endif