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Dependencies: RingBuffer
Fork of iSerial by
iSerial.cpp@12:3ffc21af1595, 2016-06-07 (annotated)
- Committer:
- palmdotax
- Date:
- Tue Jun 07 03:24:08 2016 +0000
- Revision:
- 12:3ffc21af1595
- Parent:
- 9:e121a1503afa
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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 | 8:20759f992d48 | 12 | //DigitalOut led3(LED3); |
ykuroda | 8:20759f992d48 | 13 | //DigitalOut led4(LED4); |
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; |
soulx | 9:e121a1503afa | 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 |
soulx | 9:e121a1503afa | 45 | */ |
ykuroda | 5:d83fc550ccbc | 46 | } |
ykuroda | 5:d83fc550ccbc | 47 | } |
ykuroda | 4:b38ef9675d39 | 48 | |
ykuroda | 7:5a25789c3b55 | 49 | void |
ykuroda | 7:5a25789c3b55 | 50 | iSerial::disable_uart_irq(void) |
ykuroda | 7:5a25789c3b55 | 51 | { |
ykuroda | 7:5a25789c3b55 | 52 | switch(tx){ |
ykuroda | 7:5a25789c3b55 | 53 | case USBTX: |
ykuroda | 7:5a25789c3b55 | 54 | #if defined(TARGET_LPC1768) |
ykuroda | 7:5a25789c3b55 | 55 | NVIC_DisableIRQ(UART2_IRQn); |
ykuroda | 7:5a25789c3b55 | 56 | #elif defined(TARGET_LPC11U24) |
ykuroda | 7:5a25789c3b55 | 57 | NVIC_DisableIRQ(UART_IRQn); |
ykuroda | 7:5a25789c3b55 | 58 | #endif |
ykuroda | 7:5a25789c3b55 | 59 | // led1 = !led1; |
ykuroda | 7:5a25789c3b55 | 60 | break; |
soulx | 9:e121a1503afa | 61 | /* |
ykuroda | 7:5a25789c3b55 | 62 | case p9: |
ykuroda | 7:5a25789c3b55 | 63 | #if defined(TARGET_LPC1768) |
ykuroda | 7:5a25789c3b55 | 64 | NVIC_DisableIRQ(UART1_IRQn); |
ykuroda | 7:5a25789c3b55 | 65 | #elif defined(TARGET_LPC11U24) |
ykuroda | 7:5a25789c3b55 | 66 | NVIC_DisableIRQ(UART_IRQn); |
ykuroda | 7:5a25789c3b55 | 67 | #endif |
ykuroda | 7:5a25789c3b55 | 68 | break; |
ykuroda | 7:5a25789c3b55 | 69 | |
ykuroda | 7:5a25789c3b55 | 70 | #if defined(TARGET_LPC1768) |
ykuroda | 7:5a25789c3b55 | 71 | case p13: |
ykuroda | 7:5a25789c3b55 | 72 | NVIC_DisableIRQ(UART3_IRQn); |
ykuroda | 7:5a25789c3b55 | 73 | break; |
ykuroda | 7:5a25789c3b55 | 74 | case p28: |
ykuroda | 7:5a25789c3b55 | 75 | NVIC_DisableIRQ(UART0_IRQn); |
ykuroda | 7:5a25789c3b55 | 76 | break; |
soulx | 9:e121a1503afa | 77 | #endif*/ |
ykuroda | 7:5a25789c3b55 | 78 | } |
ykuroda | 7:5a25789c3b55 | 79 | } |
ykuroda | 4:b38ef9675d39 | 80 | |
ykuroda | 3:d5353b68105f | 81 | /* |
ykuroda | 3:d5353b68105f | 82 | * Interrupt Function |
ykuroda | 3:d5353b68105f | 83 | */ |
ykuroda | 3:d5353b68105f | 84 | void |
ykuroda | 3:d5353b68105f | 85 | iSerial::rx_handler(void) |
ykuroda | 3:d5353b68105f | 86 | { |
ykuroda | 8:20759f992d48 | 87 | // led3 = 1; |
ykuroda | 8:20759f992d48 | 88 | while(Serial::readable()) |
ykuroda | 3:d5353b68105f | 89 | rxbuf.save(Serial::getc()); |
ykuroda | 8:20759f992d48 | 90 | // led3 = 0; |
ykuroda | 3:d5353b68105f | 91 | } |
ykuroda | 3:d5353b68105f | 92 | |
ykuroda | 3:d5353b68105f | 93 | void |
ykuroda | 3:d5353b68105f | 94 | iSerial::tx_handler(void) |
ykuroda | 3:d5353b68105f | 95 | { |
ykuroda | 8:20759f992d48 | 96 | // led4 = 1; |
ykuroda | 7:5a25789c3b55 | 97 | while(Serial::writeable() && txbuf.check()) |
ykuroda | 7:5a25789c3b55 | 98 | Serial::putc( txbuf.read() ); |
ykuroda | 8:20759f992d48 | 99 | // led4 = 0; |
ykuroda | 3:d5353b68105f | 100 | } |
ykuroda | 3:d5353b68105f | 101 | |
ykuroda | 3:d5353b68105f | 102 | iSerial::iSerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize) |
ykuroda | 3:d5353b68105f | 103 | : Serial(_tx, _rx, _name), |
ykuroda | 5:d83fc550ccbc | 104 | tx(_tx), |
ykuroda | 5:d83fc550ccbc | 105 | rx(_rx), |
ykuroda | 4:b38ef9675d39 | 106 | txbufsize(_txbufsize), |
ykuroda | 4:b38ef9675d39 | 107 | rxbufsize(_rxbufsize), |
ykuroda | 4:b38ef9675d39 | 108 | txbuf(RingBuffer(txbufsize)), |
ykuroda | 4:b38ef9675d39 | 109 | rxbuf(RingBuffer(rxbufsize)), |
ykuroda | 5:d83fc550ccbc | 110 | str(new char [txbufsize]) |
ykuroda | 3:d5353b68105f | 111 | { |
ykuroda | 3:d5353b68105f | 112 | __disable_irq(); |
ykuroda | 3:d5353b68105f | 113 | |
ykuroda | 3:d5353b68105f | 114 | attach(this, &iSerial::tx_handler, Serial::TxIrq); |
ykuroda | 3:d5353b68105f | 115 | attach(this, &iSerial::rx_handler, Serial::RxIrq); |
ykuroda | 3:d5353b68105f | 116 | |
ykuroda | 3:d5353b68105f | 117 | // format(8,Serial::None,1); // default |
ykuroda | 3:d5353b68105f | 118 | // baud(baudrate); |
ykuroda | 3:d5353b68105f | 119 | |
ykuroda | 3:d5353b68105f | 120 | __enable_irq(); |
ykuroda | 5:d83fc550ccbc | 121 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 122 | } |
ykuroda | 3:d5353b68105f | 123 | |
ykuroda | 4:b38ef9675d39 | 124 | iSerial::~iSerial() |
ykuroda | 4:b38ef9675d39 | 125 | { |
ykuroda | 4:b38ef9675d39 | 126 | delete [] str; |
ykuroda | 4:b38ef9675d39 | 127 | } |
ykuroda | 4:b38ef9675d39 | 128 | |
ykuroda | 3:d5353b68105f | 129 | int |
ykuroda | 3:d5353b68105f | 130 | iSerial::readable(void) |
ykuroda | 3:d5353b68105f | 131 | { |
ykuroda | 3:d5353b68105f | 132 | return rxbuf.check(); |
ykuroda | 3:d5353b68105f | 133 | } |
ykuroda | 3:d5353b68105f | 134 | |
ykuroda | 3:d5353b68105f | 135 | int |
ykuroda | 3:d5353b68105f | 136 | iSerial::getc(void) |
ykuroda | 3:d5353b68105f | 137 | { |
ykuroda | 3:d5353b68105f | 138 | unsigned short int c; |
ykuroda | 3:d5353b68105f | 139 | |
ykuroda | 8:20759f992d48 | 140 | while(!rxbuf.check()); // wait receiving a character |
ykuroda | 8:20759f992d48 | 141 | disable_uart_irq(); |
ykuroda | 3:d5353b68105f | 142 | c = rxbuf.read(); |
ykuroda | 8:20759f992d48 | 143 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 144 | |
ykuroda | 3:d5353b68105f | 145 | return c; |
ykuroda | 3:d5353b68105f | 146 | } |
ykuroda | 3:d5353b68105f | 147 | |
ykuroda | 3:d5353b68105f | 148 | void |
ykuroda | 3:d5353b68105f | 149 | iSerial::putc(short ch) |
ykuroda | 3:d5353b68105f | 150 | { |
ykuroda | 3:d5353b68105f | 151 | if(txbuf.check()==0 && Serial::writeable()){ |
ykuroda | 3:d5353b68105f | 152 | Serial::putc(ch); |
ykuroda | 3:d5353b68105f | 153 | |
ykuroda | 3:d5353b68105f | 154 | } else { |
ykuroda | 7:5a25789c3b55 | 155 | while(txbuf.full()){ |
ykuroda | 7:5a25789c3b55 | 156 | disable_uart_irq(); |
ykuroda | 7:5a25789c3b55 | 157 | tx_handler(); |
ykuroda | 7:5a25789c3b55 | 158 | enable_uart_irq(); |
ykuroda | 7:5a25789c3b55 | 159 | } |
ykuroda | 7:5a25789c3b55 | 160 | |
ykuroda | 7:5a25789c3b55 | 161 | disable_uart_irq(); |
ykuroda | 3:d5353b68105f | 162 | txbuf.save(ch); |
ykuroda | 5:d83fc550ccbc | 163 | enable_uart_irq(); |
ykuroda | 3:d5353b68105f | 164 | } |
ykuroda | 3:d5353b68105f | 165 | } |
ykuroda | 3:d5353b68105f | 166 | |
ykuroda | 3:d5353b68105f | 167 | short int |
ykuroda | 3:d5353b68105f | 168 | iSerial::putstr(const char* s) |
ykuroda | 3:d5353b68105f | 169 | { |
ykuroda | 3:d5353b68105f | 170 | int i=0; |
ykuroda | 3:d5353b68105f | 171 | for(; ; i++){ |
ykuroda | 3:d5353b68105f | 172 | if(*s==0) break; |
ykuroda | 3:d5353b68105f | 173 | putc(*s++); |
ykuroda | 3:d5353b68105f | 174 | } |
ykuroda | 3:d5353b68105f | 175 | return i; |
ykuroda | 3:d5353b68105f | 176 | } |
ykuroda | 3:d5353b68105f | 177 | |
ykuroda | 3:d5353b68105f | 178 | short int |
ykuroda | 3:d5353b68105f | 179 | iSerial::puts(const char* s) |
ykuroda | 3:d5353b68105f | 180 | { |
ykuroda | 3:d5353b68105f | 181 | short int n = putstr(s); |
ykuroda | 3:d5353b68105f | 182 | putc(CR); |
ykuroda | 3:d5353b68105f | 183 | putc(LF); |
ykuroda | 3:d5353b68105f | 184 | return n; |
ykuroda | 3:d5353b68105f | 185 | } |
ykuroda | 3:d5353b68105f | 186 | |
ykuroda | 4:b38ef9675d39 | 187 | char* |
ykuroda | 4:b38ef9675d39 | 188 | iSerial::printf(const char* format, ...) |
ykuroda | 4:b38ef9675d39 | 189 | { |
ykuroda | 4:b38ef9675d39 | 190 | va_list arg; |
ykuroda | 4:b38ef9675d39 | 191 | va_start(arg,format); |
ykuroda | 4:b38ef9675d39 | 192 | vsprintf(str, format, arg); |
ykuroda | 4:b38ef9675d39 | 193 | va_end(arg); |
ykuroda | 4:b38ef9675d39 | 194 | putstr(str); |
ykuroda | 4:b38ef9675d39 | 195 | return str; |
ykuroda | 4:b38ef9675d39 | 196 | } |
ykuroda | 4:b38ef9675d39 | 197 | |
ykuroda | 4:b38ef9675d39 | 198 | |
ykuroda | 6:8d4b95b90c3b | 199 | void |
ykuroda | 6:8d4b95b90c3b | 200 | iSerial::flush(void) |
ykuroda | 6:8d4b95b90c3b | 201 | { |
ykuroda | 7:5a25789c3b55 | 202 | while(txbuf.check()) |
ykuroda | 7:5a25789c3b55 | 203 | enable_uart_irq(); |
ykuroda | 6:8d4b95b90c3b | 204 | } |
ykuroda | 6:8d4b95b90c3b | 205 | |
ykuroda | 6:8d4b95b90c3b | 206 |