Matias Bevilacqua / iSerial

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Dependencies:   RingBuffer

Fork of iSerial by Yoji KURODA

iSerial.cpp@4:b38ef9675d39, 2012-09-03 (annotated)

Committer:
ykuroda
Date:
Mon Sep 03 09:15:34 2012 +0000
Revision:
4:b38ef9675d39
Parent:
3:d5353b68105f
Child:
5:d83fc550ccbc
printf using interrupt is implemented

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ykuroda 3:d5353b68105f 1 //
ykuroda 3:d5353b68105f 2 // iSerial.cpp ... Serial Driver with Interrupt Rec/Send
ykuroda 3:d5353b68105f 3 //
ykuroda 3:d5353b68105f 4 // 2009.11.13 ... Originally written by Y.Kuroda for Renesas H83664
ykuroda 3:d5353b68105f 5 // 2012.08.31 ... Code convert for mbed in C++
ykuroda 3:d5353b68105f 6 //
ykuroda 4:b38ef9675d39 7 #include <stdarg.h>
ykuroda 3:d5353b68105f 8 #include "mbed.h"
ykuroda 3:d5353b68105f 9 #include "RingBuffer.h"
ykuroda 3:d5353b68105f 10 #include "iSerial.h"
ykuroda 3:d5353b68105f 11
ykuroda 3:d5353b68105f 12
ykuroda 4:b38ef9675d39 13
ykuroda 4:b38ef9675d39 14 #if defined(TARGET_LPC1768)
ykuroda 4:b38ef9675d39 15
ykuroda 4:b38ef9675d39 16 // UART1 = p9, p10
ykuroda 4:b38ef9675d39 17
ykuroda 4:b38ef9675d39 18 #define UART_IRQn UART2_IRQn
ykuroda 4:b38ef9675d39 19
ykuroda 4:b38ef9675d39 20 #elif defined(TARGET_LPC11U24)
ykuroda 4:b38ef9675d39 21
ykuroda 4:b38ef9675d39 22 #define UART_IRQn UART_IRQn
ykuroda 4:b38ef9675d39 23
ykuroda 4:b38ef9675d39 24 #endif
ykuroda 4:b38ef9675d39 25
ykuroda 4:b38ef9675d39 26
ykuroda 4:b38ef9675d39 27
ykuroda 3:d5353b68105f 28 /*
ykuroda 3:d5353b68105f 29 * Interrupt Function
ykuroda 3:d5353b68105f 30 */
ykuroda 3:d5353b68105f 31 void
ykuroda 3:d5353b68105f 32 iSerial::rx_handler(void)
ykuroda 3:d5353b68105f 33 {
ykuroda 3:d5353b68105f 34 if(Serial::readable()){
ykuroda 3:d5353b68105f 35 rxbuf.save(Serial::getc());
ykuroda 3:d5353b68105f 36 }
ykuroda 3:d5353b68105f 37
ykuroda 3:d5353b68105f 38 NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn);
ykuroda 3:d5353b68105f 39 }
ykuroda 3:d5353b68105f 40
ykuroda 3:d5353b68105f 41 void
ykuroda 3:d5353b68105f 42 iSerial::tx_handler(void)
ykuroda 3:d5353b68105f 43 {
ykuroda 3:d5353b68105f 44 if(Serial::writeable()){
ykuroda 3:d5353b68105f 45 if(txbuf.check()){
ykuroda 3:d5353b68105f 46 Serial::putc( txbuf.read() );
ykuroda 3:d5353b68105f 47 }
ykuroda 3:d5353b68105f 48 }
ykuroda 3:d5353b68105f 49 NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn);
ykuroda 3:d5353b68105f 50 }
ykuroda 3:d5353b68105f 51
ykuroda 3:d5353b68105f 52 iSerial::iSerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize)
ykuroda 3:d5353b68105f 53 : Serial(_tx, _rx, _name),
ykuroda 4:b38ef9675d39 54 txbufsize(_txbufsize),
ykuroda 4:b38ef9675d39 55 rxbufsize(_rxbufsize),
ykuroda 4:b38ef9675d39 56 txbuf(RingBuffer(txbufsize)),
ykuroda 4:b38ef9675d39 57 rxbuf(RingBuffer(rxbufsize)),
ykuroda 4:b38ef9675d39 58 str(new char [txbufsize])
ykuroda 3:d5353b68105f 59 {
ykuroda 3:d5353b68105f 60 __disable_irq();
ykuroda 3:d5353b68105f 61
ykuroda 3:d5353b68105f 62 attach(this, &iSerial::tx_handler, Serial::TxIrq);
ykuroda 3:d5353b68105f 63 attach(this, &iSerial::rx_handler, Serial::RxIrq);
ykuroda 3:d5353b68105f 64
ykuroda 3:d5353b68105f 65 // format(8,Serial::None,1); // default
ykuroda 3:d5353b68105f 66 // baud(baudrate);
ykuroda 3:d5353b68105f 67
ykuroda 3:d5353b68105f 68 __enable_irq();
ykuroda 3:d5353b68105f 69 NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn);
ykuroda 3:d5353b68105f 70 }
ykuroda 3:d5353b68105f 71
ykuroda 4:b38ef9675d39 72 iSerial::~iSerial()
ykuroda 4:b38ef9675d39 73 {
ykuroda 4:b38ef9675d39 74 delete [] str;
ykuroda 4:b38ef9675d39 75 }
ykuroda 4:b38ef9675d39 76
ykuroda 3:d5353b68105f 77 int
ykuroda 3:d5353b68105f 78 iSerial::readable(void)
ykuroda 3:d5353b68105f 79 {
ykuroda 3:d5353b68105f 80 return rxbuf.check();
ykuroda 3:d5353b68105f 81 }
ykuroda 3:d5353b68105f 82
ykuroda 3:d5353b68105f 83 int
ykuroda 3:d5353b68105f 84 iSerial::getc(void)
ykuroda 3:d5353b68105f 85 {
ykuroda 3:d5353b68105f 86 unsigned short int c;
ykuroda 3:d5353b68105f 87
ykuroda 3:d5353b68105f 88 while(!rxbuf.check());
ykuroda 3:d5353b68105f 89 c = rxbuf.read();
ykuroda 3:d5353b68105f 90
ykuroda 3:d5353b68105f 91 return c;
ykuroda 3:d5353b68105f 92 }
ykuroda 3:d5353b68105f 93
ykuroda 3:d5353b68105f 94 void
ykuroda 3:d5353b68105f 95 iSerial::putc(short ch)
ykuroda 3:d5353b68105f 96 {
ykuroda 3:d5353b68105f 97 if(txbuf.check()==0 && Serial::writeable()){
ykuroda 3:d5353b68105f 98 Serial::putc(ch);
ykuroda 3:d5353b68105f 99
ykuroda 3:d5353b68105f 100 } else {
ykuroda 3:d5353b68105f 101 while(txbuf.full());
ykuroda 3:d5353b68105f 102 txbuf.save(ch);
ykuroda 3:d5353b68105f 103 NVIC_EnableIRQ(UART_IRQn); // UART1_IRQn);
ykuroda 3:d5353b68105f 104 }
ykuroda 3:d5353b68105f 105 }
ykuroda 3:d5353b68105f 106
ykuroda 3:d5353b68105f 107 short int
ykuroda 3:d5353b68105f 108 iSerial::putstr(const char* s)
ykuroda 3:d5353b68105f 109 {
ykuroda 3:d5353b68105f 110 int i=0;
ykuroda 3:d5353b68105f 111 for(; ; i++){
ykuroda 3:d5353b68105f 112 if(*s==0) break;
ykuroda 3:d5353b68105f 113 putc(*s++);
ykuroda 3:d5353b68105f 114 }
ykuroda 3:d5353b68105f 115 return i;
ykuroda 3:d5353b68105f 116 }
ykuroda 3:d5353b68105f 117
ykuroda 3:d5353b68105f 118 short int
ykuroda 3:d5353b68105f 119 iSerial::puts(const char* s)
ykuroda 3:d5353b68105f 120 {
ykuroda 3:d5353b68105f 121 short int n = putstr(s);
ykuroda 3:d5353b68105f 122 putc(CR);
ykuroda 3:d5353b68105f 123 putc(LF);
ykuroda 3:d5353b68105f 124 return n;
ykuroda 3:d5353b68105f 125 }
ykuroda 3:d5353b68105f 126
ykuroda 4:b38ef9675d39 127 char*
ykuroda 4:b38ef9675d39 128 iSerial::printf(const char* format, ...)
ykuroda 4:b38ef9675d39 129 {
ykuroda 4:b38ef9675d39 130 va_list arg;
ykuroda 4:b38ef9675d39 131 va_start(arg,format);
ykuroda 4:b38ef9675d39 132 vsprintf(str, format, arg);
ykuroda 4:b38ef9675d39 133 va_end(arg);
ykuroda 4:b38ef9675d39 134 putstr(str);
ykuroda 4:b38ef9675d39 135 return str;
ykuroda 4:b38ef9675d39 136 }
ykuroda 4:b38ef9675d39 137
ykuroda 4:b38ef9675d39 138
ykuroda 4:b38ef9675d39 139
ykuroda 4:b38ef9675d39 140