Better Serial C++ class library with interrupt
Dependents: Dumb_box_rev2 mbed_GPSproject
iSerial class library can easy be used just by swapping Serial declarations.
API
iSerial | |
Examples
#include "mbed.h" #include "iSerial.h" char s[] = "12345678901234567890123456789012345678901234567890"; int main() { iSerial pc(USBTX,USBRX); char* c = s; while(1) { pc.puts(s); while(pc.readable()){ int ret = pc.getc(); if(ret) *c++ = ret; if(c >= s+sizeof(s)-1) c = s; } wait(1); } }
Example 2
Comparing speed of ordinary Serial functions
#include "mbed.h" #include "iSerial.h" char s[] = "12345678901234567890123456789012345678901234567890"; // 50 bytes int main() { Timer t; Serial pc(USBTX,USBRX); pc.baud(921600); t.reset(); t.start(); for(int i=0; i<30; i++) { pc.printf(s); wait(0.001); } t.stop(); int t1 = t.read_us(); pc.puts("\n\n\n"); iSerial ipc(USBTX,USBRX,NULL,1000,100); // try NOT to set the buffer over flowed // iSerial ipc(USBTX,USBRX); // set as default = 100, 100 ipc.baud(921600); t.reset(); t.start(); for(int i=0; i<30; i++) { ipc.printf(s); wait(0.001); } t.stop(); int t2 = t.read_us(); ipc.printf("\n\n\nThe time %d, %d [us] was taken.\n", t1, t2); ipc.puts("End."); ipc.flush(); }
iSerial.cpp@2:3fc74f4d685a, 2012-08-31 (annotated)
- Committer:
- ykuroda
- Date:
- Fri Aug 31 17:32:00 2012 +0000
- Revision:
- 2:3fc74f4d685a
- Parent:
- SerialIntr.cpp@0:1d193cb1a933
- Child:
- 3:d5353b68105f
Name change
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ykuroda | 0:1d193cb1a933 | 1 | // |
ykuroda | 2:3fc74f4d685a | 2 | // iSerial.cpp ... Serial Driver with Interrupt Rec/Send |
ykuroda | 0:1d193cb1a933 | 3 | // |
ykuroda | 0:1d193cb1a933 | 4 | // 2009.11.13 ... Originally written by Y.Kuroda for Renesas H83664 |
ykuroda | 0:1d193cb1a933 | 5 | // 2012.08.31 ... Code convert for mbed in C++ |
ykuroda | 0:1d193cb1a933 | 6 | // |
ykuroda | 0:1d193cb1a933 | 7 | #include "mbed.h" |
ykuroda | 0:1d193cb1a933 | 8 | #include "RingBuffer.h" |
ykuroda | 2:3fc74f4d685a | 9 | #include "iSerial.h" |
ykuroda | 0:1d193cb1a933 | 10 | |
ykuroda | 0:1d193cb1a933 | 11 | |
ykuroda | 0:1d193cb1a933 | 12 | /* |
ykuroda | 0:1d193cb1a933 | 13 | * Interrupt Function |
ykuroda | 0:1d193cb1a933 | 14 | */ |
ykuroda | 0:1d193cb1a933 | 15 | void |
ykuroda | 2:3fc74f4d685a | 16 | ISerial::rx_handler(void) |
ykuroda | 0:1d193cb1a933 | 17 | { |
ykuroda | 0:1d193cb1a933 | 18 | if(Serial::readable()){ |
ykuroda | 0:1d193cb1a933 | 19 | rxbuf.save(Serial::getc()); |
ykuroda | 0:1d193cb1a933 | 20 | } |
ykuroda | 2:3fc74f4d685a | 21 | |
ykuroda | 0:1d193cb1a933 | 22 | NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); |
ykuroda | 0:1d193cb1a933 | 23 | } |
ykuroda | 0:1d193cb1a933 | 24 | |
ykuroda | 0:1d193cb1a933 | 25 | void |
ykuroda | 2:3fc74f4d685a | 26 | ISerial::tx_handler(void) |
ykuroda | 0:1d193cb1a933 | 27 | { |
ykuroda | 2:3fc74f4d685a | 28 | if(Serial::writeable()){ |
ykuroda | 0:1d193cb1a933 | 29 | if(txbuf.check()){ |
ykuroda | 0:1d193cb1a933 | 30 | Serial::putc( txbuf.read() ); |
ykuroda | 0:1d193cb1a933 | 31 | } |
ykuroda | 0:1d193cb1a933 | 32 | } |
ykuroda | 0:1d193cb1a933 | 33 | NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); |
ykuroda | 0:1d193cb1a933 | 34 | } |
ykuroda | 0:1d193cb1a933 | 35 | |
ykuroda | 0:1d193cb1a933 | 36 | /* |
ykuroda | 0:1d193cb1a933 | 37 | * void sci_init(void) |
ykuroda | 0:1d193cb1a933 | 38 | * |
ykuroda | 0:1d193cb1a933 | 39 | * ポート初期化関数....すべてのI/Oの設定を行っている. |
ykuroda | 0:1d193cb1a933 | 40 | * |
ykuroda | 0:1d193cb1a933 | 41 | * 引数:なし |
ykuroda | 0:1d193cb1a933 | 42 | * 戻り値:なし |
ykuroda | 0:1d193cb1a933 | 43 | * |
ykuroda | 0:1d193cb1a933 | 44 | */ |
ykuroda | 2:3fc74f4d685a | 45 | ISerial::ISerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize) |
ykuroda | 0:1d193cb1a933 | 46 | : Serial(_tx, _rx, _name), |
ykuroda | 0:1d193cb1a933 | 47 | txbuf(RingBuffer(_txbufsize)), |
ykuroda | 0:1d193cb1a933 | 48 | rxbuf(RingBuffer(_rxbufsize)) |
ykuroda | 0:1d193cb1a933 | 49 | { |
ykuroda | 0:1d193cb1a933 | 50 | __disable_irq(); |
ykuroda | 0:1d193cb1a933 | 51 | |
ykuroda | 2:3fc74f4d685a | 52 | attach(this, &ISerial::tx_handler, Serial::TxIrq); |
ykuroda | 2:3fc74f4d685a | 53 | attach(this, &ISerial::rx_handler, Serial::RxIrq); |
ykuroda | 0:1d193cb1a933 | 54 | |
ykuroda | 0:1d193cb1a933 | 55 | // format(8,Serial::None,1); // default |
ykuroda | 0:1d193cb1a933 | 56 | // baud(baudrate); |
ykuroda | 0:1d193cb1a933 | 57 | |
ykuroda | 0:1d193cb1a933 | 58 | __enable_irq(); |
ykuroda | 0:1d193cb1a933 | 59 | NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); |
ykuroda | 0:1d193cb1a933 | 60 | } |
ykuroda | 0:1d193cb1a933 | 61 | |
ykuroda | 0:1d193cb1a933 | 62 | /* |
ykuroda | 0:1d193cb1a933 | 63 | * シリアル入力に文字があるかどうかチェック |
ykuroda | 0:1d193cb1a933 | 64 | * 返値: バッファにある文字数 |
ykuroda | 0:1d193cb1a933 | 65 | */ |
ykuroda | 0:1d193cb1a933 | 66 | int |
ykuroda | 2:3fc74f4d685a | 67 | ISerial::readable(void) |
ykuroda | 0:1d193cb1a933 | 68 | { |
ykuroda | 0:1d193cb1a933 | 69 | return rxbuf.check(); |
ykuroda | 0:1d193cb1a933 | 70 | } |
ykuroda | 0:1d193cb1a933 | 71 | |
ykuroda | 0:1d193cb1a933 | 72 | /* |
ykuroda | 0:1d193cb1a933 | 73 | * シリアルから一文字入力 |
ykuroda | 0:1d193cb1a933 | 74 | * --- 文字入力を待つ |
ykuroda | 0:1d193cb1a933 | 75 | */ |
ykuroda | 0:1d193cb1a933 | 76 | int |
ykuroda | 2:3fc74f4d685a | 77 | ISerial::getc(void) |
ykuroda | 0:1d193cb1a933 | 78 | { |
ykuroda | 0:1d193cb1a933 | 79 | unsigned short int c; |
ykuroda | 0:1d193cb1a933 | 80 | |
ykuroda | 0:1d193cb1a933 | 81 | while(!rxbuf.check()); |
ykuroda | 0:1d193cb1a933 | 82 | c = rxbuf.read(); |
ykuroda | 0:1d193cb1a933 | 83 | |
ykuroda | 0:1d193cb1a933 | 84 | return c; |
ykuroda | 0:1d193cb1a933 | 85 | } |
ykuroda | 0:1d193cb1a933 | 86 | |
ykuroda | 0:1d193cb1a933 | 87 | |
ykuroda | 0:1d193cb1a933 | 88 | /* |
ykuroda | 0:1d193cb1a933 | 89 | * シリアルへ一文字出力 |
ykuroda | 0:1d193cb1a933 | 90 | */ |
ykuroda | 0:1d193cb1a933 | 91 | void |
ykuroda | 2:3fc74f4d685a | 92 | ISerial::putc(short ch) |
ykuroda | 0:1d193cb1a933 | 93 | { |
ykuroda | 0:1d193cb1a933 | 94 | if(txbuf.check()==0 && Serial::writeable()){ |
ykuroda | 0:1d193cb1a933 | 95 | Serial::putc(ch); |
ykuroda | 0:1d193cb1a933 | 96 | |
ykuroda | 0:1d193cb1a933 | 97 | } else { |
ykuroda | 0:1d193cb1a933 | 98 | while(txbuf.full()); |
ykuroda | 0:1d193cb1a933 | 99 | txbuf.save(ch); |
ykuroda | 0:1d193cb1a933 | 100 | NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn); |
ykuroda | 0:1d193cb1a933 | 101 | } |
ykuroda | 0:1d193cb1a933 | 102 | } |
ykuroda | 0:1d193cb1a933 | 103 | |
ykuroda | 0:1d193cb1a933 | 104 | /* |
ykuroda | 0:1d193cb1a933 | 105 | * シリアルへ文字列を出力 |
ykuroda | 0:1d193cb1a933 | 106 | * 注:一回の最大文字数はLINESIZE |
ykuroda | 0:1d193cb1a933 | 107 | * 注:文字列の終わりにはヌル文字が必要. |
ykuroda | 0:1d193cb1a933 | 108 | * |
ykuroda | 0:1d193cb1a933 | 109 | * 引数:文字列へのポインタ |
ykuroda | 0:1d193cb1a933 | 110 | * 返値:出力した文字数 |
ykuroda | 0:1d193cb1a933 | 111 | */ |
ykuroda | 0:1d193cb1a933 | 112 | short int |
ykuroda | 2:3fc74f4d685a | 113 | ISerial::putstr(const char* s) |
ykuroda | 0:1d193cb1a933 | 114 | { |
ykuroda | 0:1d193cb1a933 | 115 | int i=0; |
ykuroda | 0:1d193cb1a933 | 116 | for(; ; i++){ |
ykuroda | 0:1d193cb1a933 | 117 | if(*s==0) break; |
ykuroda | 0:1d193cb1a933 | 118 | putc(*s++); |
ykuroda | 0:1d193cb1a933 | 119 | } |
ykuroda | 0:1d193cb1a933 | 120 | return i; |
ykuroda | 0:1d193cb1a933 | 121 | } |
ykuroda | 0:1d193cb1a933 | 122 | |
ykuroda | 0:1d193cb1a933 | 123 | /* short int sci_puts(char* s) |
ykuroda | 0:1d193cb1a933 | 124 | * シリアルへ文字列を一行出力 |
ykuroda | 0:1d193cb1a933 | 125 | * 注:最後に改行コードを送る他はsci_putstrと同じ |
ykuroda | 0:1d193cb1a933 | 126 | * |
ykuroda | 0:1d193cb1a933 | 127 | * 引数:文字列へのポインタ |
ykuroda | 0:1d193cb1a933 | 128 | * 返値:出力した文字数 |
ykuroda | 0:1d193cb1a933 | 129 | */ |
ykuroda | 0:1d193cb1a933 | 130 | short int |
ykuroda | 2:3fc74f4d685a | 131 | ISerial::puts(const char* s) |
ykuroda | 0:1d193cb1a933 | 132 | { |
ykuroda | 0:1d193cb1a933 | 133 | short int n = putstr(s); |
ykuroda | 0:1d193cb1a933 | 134 | putc(CR); |
ykuroda | 0:1d193cb1a933 | 135 | putc(LF); |
ykuroda | 0:1d193cb1a933 | 136 | return n; |
ykuroda | 0:1d193cb1a933 | 137 | } |
ykuroda | 0:1d193cb1a933 | 138 |