Better Serial C class library with interrupt
Dependencies: RingBuffer
Fork of iSerial by
iSerial.cpp@6:8d4b95b90c3b, 2012-09-03 (annotated)
- Committer:
- ykuroda
- Date:
- Mon Sep 03 12:01:55 2012 +0000
- Revision:
- 6:8d4b95b90c3b
- Parent:
- 5:d83fc550ccbc
- Child:
- 7:5a25789c3b55
flush added
Who changed what in which revision?
User | Revision | Line number | New 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 | 5:d83fc550ccbc | 13 | //DigitalOut led1(LED1); |
ykuroda | 4:b38ef9675d39 | 14 | |
ykuroda | 4:b38ef9675d39 | 15 | |
ykuroda | 5:d83fc550ccbc | 16 | void |
ykuroda | 5:d83fc550ccbc | 17 | iSerial::enable_uart_irq(void) |
ykuroda | 5:d83fc550ccbc | 18 | { |
ykuroda | 5:d83fc550ccbc | 19 | switch(tx){ |
ykuroda | 5:d83fc550ccbc | 20 | case USBTX: |
ykuroda | 5:d83fc550ccbc | 21 | #if defined(TARGET_LPC1768) |
ykuroda | 5:d83fc550ccbc | 22 | NVIC_EnableIRQ(UART2_IRQn); |
ykuroda | 5:d83fc550ccbc | 23 | #elif defined(TARGET_LPC11U24) |
ykuroda | 5:d83fc550ccbc | 24 | NVIC_EnableIRQ(UART_IRQn); |
ykuroda | 5:d83fc550ccbc | 25 | #endif |
ykuroda | 5:d83fc550ccbc | 26 | // led1 = !led1; |
ykuroda | 5:d83fc550ccbc | 27 | break; |
ykuroda | 5:d83fc550ccbc | 28 | |
ykuroda | 5:d83fc550ccbc | 29 | case p9: |
ykuroda | 5:d83fc550ccbc | 30 | #if defined(TARGET_LPC1768) |
ykuroda | 5:d83fc550ccbc | 31 | NVIC_EnableIRQ(UART1_IRQn); |
ykuroda | 5:d83fc550ccbc | 32 | #elif defined(TARGET_LPC11U24) |
ykuroda | 5:d83fc550ccbc | 33 | NVIC_EnableIRQ(UART_IRQn); |
ykuroda | 5:d83fc550ccbc | 34 | #endif |
ykuroda | 5:d83fc550ccbc | 35 | break; |
ykuroda | 4:b38ef9675d39 | 36 | |
ykuroda | 5:d83fc550ccbc | 37 | #if defined(TARGET_LPC1768) |
ykuroda | 5:d83fc550ccbc | 38 | case p13: |
ykuroda | 5:d83fc550ccbc | 39 | NVIC_EnableIRQ(UART3_IRQn); |
ykuroda | 5:d83fc550ccbc | 40 | break; |
ykuroda | 5:d83fc550ccbc | 41 | case p28: |
ykuroda | 5:d83fc550ccbc | 42 | NVIC_EnableIRQ(UART0_IRQn); |
ykuroda | 5:d83fc550ccbc | 43 | break; |
ykuroda | 5:d83fc550ccbc | 44 | #endif |
ykuroda | 5:d83fc550ccbc | 45 | } |
ykuroda | 5:d83fc550ccbc | 46 | } |
ykuroda | 4:b38ef9675d39 | 47 | |
ykuroda | 4:b38ef9675d39 | 48 | |
ykuroda | 3:d5353b68105f | 49 | /* |
ykuroda | 3:d5353b68105f | 50 | * Interrupt Function |
ykuroda | 3:d5353b68105f | 51 | */ |
ykuroda | 3:d5353b68105f | 52 | void |
ykuroda | 3:d5353b68105f | 53 | iSerial::rx_handler(void) |
ykuroda | 3:d5353b68105f | 54 | { |
ykuroda | 3:d5353b68105f | 55 | if(Serial::readable()){ |
ykuroda | 3:d5353b68105f | 56 | rxbuf.save(Serial::getc()); |
ykuroda | 3:d5353b68105f | 57 | } |
ykuroda | 5:d83fc550ccbc | 58 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 59 | } |
ykuroda | 3:d5353b68105f | 60 | |
ykuroda | 3:d5353b68105f | 61 | void |
ykuroda | 3:d5353b68105f | 62 | iSerial::tx_handler(void) |
ykuroda | 3:d5353b68105f | 63 | { |
ykuroda | 3:d5353b68105f | 64 | if(Serial::writeable()){ |
ykuroda | 3:d5353b68105f | 65 | if(txbuf.check()){ |
ykuroda | 3:d5353b68105f | 66 | Serial::putc( txbuf.read() ); |
ykuroda | 3:d5353b68105f | 67 | } |
ykuroda | 3:d5353b68105f | 68 | } |
ykuroda | 5:d83fc550ccbc | 69 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 70 | } |
ykuroda | 3:d5353b68105f | 71 | |
ykuroda | 3:d5353b68105f | 72 | iSerial::iSerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize) |
ykuroda | 3:d5353b68105f | 73 | : Serial(_tx, _rx, _name), |
ykuroda | 5:d83fc550ccbc | 74 | tx(_tx), |
ykuroda | 5:d83fc550ccbc | 75 | rx(_rx), |
ykuroda | 4:b38ef9675d39 | 76 | txbufsize(_txbufsize), |
ykuroda | 4:b38ef9675d39 | 77 | rxbufsize(_rxbufsize), |
ykuroda | 4:b38ef9675d39 | 78 | txbuf(RingBuffer(txbufsize)), |
ykuroda | 4:b38ef9675d39 | 79 | rxbuf(RingBuffer(rxbufsize)), |
ykuroda | 5:d83fc550ccbc | 80 | str(new char [txbufsize]) |
ykuroda | 3:d5353b68105f | 81 | { |
ykuroda | 3:d5353b68105f | 82 | __disable_irq(); |
ykuroda | 3:d5353b68105f | 83 | |
ykuroda | 3:d5353b68105f | 84 | attach(this, &iSerial::tx_handler, Serial::TxIrq); |
ykuroda | 3:d5353b68105f | 85 | attach(this, &iSerial::rx_handler, Serial::RxIrq); |
ykuroda | 3:d5353b68105f | 86 | |
ykuroda | 3:d5353b68105f | 87 | // format(8,Serial::None,1); // default |
ykuroda | 3:d5353b68105f | 88 | // baud(baudrate); |
ykuroda | 3:d5353b68105f | 89 | |
ykuroda | 3:d5353b68105f | 90 | __enable_irq(); |
ykuroda | 5:d83fc550ccbc | 91 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 92 | } |
ykuroda | 3:d5353b68105f | 93 | |
ykuroda | 4:b38ef9675d39 | 94 | iSerial::~iSerial() |
ykuroda | 4:b38ef9675d39 | 95 | { |
ykuroda | 4:b38ef9675d39 | 96 | delete [] str; |
ykuroda | 4:b38ef9675d39 | 97 | } |
ykuroda | 4:b38ef9675d39 | 98 | |
ykuroda | 3:d5353b68105f | 99 | int |
ykuroda | 3:d5353b68105f | 100 | iSerial::readable(void) |
ykuroda | 3:d5353b68105f | 101 | { |
ykuroda | 3:d5353b68105f | 102 | return rxbuf.check(); |
ykuroda | 3:d5353b68105f | 103 | } |
ykuroda | 3:d5353b68105f | 104 | |
ykuroda | 3:d5353b68105f | 105 | int |
ykuroda | 3:d5353b68105f | 106 | iSerial::getc(void) |
ykuroda | 3:d5353b68105f | 107 | { |
ykuroda | 3:d5353b68105f | 108 | unsigned short int c; |
ykuroda | 3:d5353b68105f | 109 | |
ykuroda | 3:d5353b68105f | 110 | while(!rxbuf.check()); |
ykuroda | 3:d5353b68105f | 111 | c = rxbuf.read(); |
ykuroda | 3:d5353b68105f | 112 | |
ykuroda | 3:d5353b68105f | 113 | return c; |
ykuroda | 3:d5353b68105f | 114 | } |
ykuroda | 3:d5353b68105f | 115 | |
ykuroda | 3:d5353b68105f | 116 | void |
ykuroda | 3:d5353b68105f | 117 | iSerial::putc(short ch) |
ykuroda | 3:d5353b68105f | 118 | { |
ykuroda | 3:d5353b68105f | 119 | if(txbuf.check()==0 && Serial::writeable()){ |
ykuroda | 3:d5353b68105f | 120 | Serial::putc(ch); |
ykuroda | 3:d5353b68105f | 121 | |
ykuroda | 3:d5353b68105f | 122 | } else { |
ykuroda | 3:d5353b68105f | 123 | while(txbuf.full()); |
ykuroda | 3:d5353b68105f | 124 | txbuf.save(ch); |
ykuroda | 5:d83fc550ccbc | 125 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 126 | } |
ykuroda | 3:d5353b68105f | 127 | } |
ykuroda | 3:d5353b68105f | 128 | |
ykuroda | 3:d5353b68105f | 129 | short int |
ykuroda | 3:d5353b68105f | 130 | iSerial::putstr(const char* s) |
ykuroda | 3:d5353b68105f | 131 | { |
ykuroda | 3:d5353b68105f | 132 | int i=0; |
ykuroda | 3:d5353b68105f | 133 | for(; ; i++){ |
ykuroda | 3:d5353b68105f | 134 | if(*s==0) break; |
ykuroda | 3:d5353b68105f | 135 | putc(*s++); |
ykuroda | 3:d5353b68105f | 136 | } |
ykuroda | 3:d5353b68105f | 137 | return i; |
ykuroda | 3:d5353b68105f | 138 | } |
ykuroda | 3:d5353b68105f | 139 | |
ykuroda | 3:d5353b68105f | 140 | short int |
ykuroda | 3:d5353b68105f | 141 | iSerial::puts(const char* s) |
ykuroda | 3:d5353b68105f | 142 | { |
ykuroda | 3:d5353b68105f | 143 | short int n = putstr(s); |
ykuroda | 3:d5353b68105f | 144 | putc(CR); |
ykuroda | 3:d5353b68105f | 145 | putc(LF); |
ykuroda | 3:d5353b68105f | 146 | return n; |
ykuroda | 3:d5353b68105f | 147 | } |
ykuroda | 3:d5353b68105f | 148 | |
ykuroda | 4:b38ef9675d39 | 149 | char* |
ykuroda | 4:b38ef9675d39 | 150 | iSerial::printf(const char* format, ...) |
ykuroda | 4:b38ef9675d39 | 151 | { |
ykuroda | 4:b38ef9675d39 | 152 | va_list arg; |
ykuroda | 4:b38ef9675d39 | 153 | va_start(arg,format); |
ykuroda | 4:b38ef9675d39 | 154 | vsprintf(str, format, arg); |
ykuroda | 4:b38ef9675d39 | 155 | va_end(arg); |
ykuroda | 4:b38ef9675d39 | 156 | putstr(str); |
ykuroda | 4:b38ef9675d39 | 157 | return str; |
ykuroda | 4:b38ef9675d39 | 158 | } |
ykuroda | 4:b38ef9675d39 | 159 | |
ykuroda | 4:b38ef9675d39 | 160 | |
ykuroda | 6:8d4b95b90c3b | 161 | void |
ykuroda | 6:8d4b95b90c3b | 162 | iSerial::flush(void) |
ykuroda | 6:8d4b95b90c3b | 163 | { |
ykuroda | 6:8d4b95b90c3b | 164 | while(txbuf.check()); |
ykuroda | 6:8d4b95b90c3b | 165 | } |
ykuroda | 6:8d4b95b90c3b | 166 | |
ykuroda | 6:8d4b95b90c3b | 167 |