Diff: iSerial/iSerial.cpp

Revision:

0:d69efd0ee139

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iSerial/iSerial.cpp	Thu Sep 18 15:21:47 2014 +0000
@@ -0,0 +1,205 @@
+//
+//  iSerial.cpp ... Serial Driver with Interrupt Rec/Send
+//
+//  2009.11.13 ... Originally written by Y.Kuroda for Renesas H83664
+//  2012.08.31 ... Code convert for mbed in C++
+//
+#include <stdarg.h>
+#include "mbed.h"
+#include "RingBuffer.h"
+#include "iSerial.h"
+
+//DigitalOut led3(LED3);
+//DigitalOut led4(LED4);
+
+
+void
+iSerial::enable_uart_irq(void)
+{
+    switch(tx){
+    case USBTX:
+        #if defined(TARGET_LPC1768)
+            NVIC_EnableIRQ(UART2_IRQn);
+        #elif defined(TARGET_LPC11U24)
+            NVIC_EnableIRQ(UART_IRQn);
+        #endif
+//        led1 = !led1;
+        break;
+        
+    case p9:
+        #if defined(TARGET_LPC1768)
+            NVIC_EnableIRQ(UART1_IRQn);
+        #elif defined(TARGET_LPC11U24)
+            NVIC_EnableIRQ(UART_IRQn);
+        #endif
+        break;
+
+    #if defined(TARGET_LPC1768)
+    case p13:
+        NVIC_EnableIRQ(UART3_IRQn);
+        break;
+    case p28:
+        NVIC_EnableIRQ(UART0_IRQn);
+        break;
+    #endif
+    }
+}
+
+void
+iSerial::disable_uart_irq(void)
+{
+    switch(tx){
+    case USBTX:
+        #if defined(TARGET_LPC1768)
+            NVIC_DisableIRQ(UART2_IRQn);
+        #elif defined(TARGET_LPC11U24)
+            NVIC_DisableIRQ(UART_IRQn);
+        #endif
+//        led1 = !led1;
+        break;
+        
+    case p9:
+        #if defined(TARGET_LPC1768)
+            NVIC_DisableIRQ(UART1_IRQn);
+        #elif defined(TARGET_LPC11U24)
+            NVIC_DisableIRQ(UART_IRQn);
+        #endif
+        break;
+
+    #if defined(TARGET_LPC1768)
+    case p13:
+        NVIC_DisableIRQ(UART3_IRQn);
+        break;
+    case p28:
+        NVIC_DisableIRQ(UART0_IRQn);
+        break;
+    #endif
+    }
+}
+
+/*
+ *    Interrupt Function
+ */
+void
+iSerial::rx_handler(void)
+{
+//  led3 = 1;
+    while(Serial::readable())
+        rxbuf.save(Serial::getc());
+//  led3 = 0;
+}
+
+void
+iSerial::tx_handler(void)
+{
+//  led4 = 1;
+    while(Serial::writeable() && txbuf.check())
+        Serial::putc( txbuf.read() );
+//  led4 = 0;
+}
+
+iSerial::iSerial(PinName _tx, PinName _rx, const char *_name, int _txbufsize, int _rxbufsize)
+:   Serial(_tx, _rx, _name),
+    tx(_tx),
+    rx(_rx),
+    txbufsize(_txbufsize),
+    rxbufsize(_rxbufsize),
+    txbuf(RingBuffer(txbufsize)),
+    rxbuf(RingBuffer(rxbufsize)),
+    str(new char [txbufsize])    
+{
+    __disable_irq();
+
+    attach(this, &iSerial::tx_handler, Serial::TxIrq);
+    attach(this, &iSerial::rx_handler, Serial::RxIrq);
+
+//  format(8,Serial::None,1);   // default
+//  baud(baudrate);
+
+    __enable_irq();
+    enable_uart_irq();    
+}
+
+iSerial::~iSerial()
+{
+    delete [] str;
+}
+
+int
+iSerial::readable(void)
+{
+    return rxbuf.check();
+}
+
+int
+iSerial::getc(void)
+{
+    unsigned short int c;
+
+    while(!rxbuf.check());   // wait receiving a character
+    disable_uart_irq();
+    c = rxbuf.read();
+    enable_uart_irq();
+
+    return c;
+}
+
+void
+iSerial::putc(short ch)
+{
+    if(txbuf.check()==0 && Serial::writeable()){
+        Serial::putc(ch);
+        
+    } else {
+        while(txbuf.full()){
+            disable_uart_irq();
+            tx_handler();
+            enable_uart_irq();
+        }
+        
+        disable_uart_irq();
+        txbuf.save(ch);
+        enable_uart_irq();
+    }
+}
+
+short int
+iSerial::putstr(const char* s)
+{
+    int i=0;
+    for(; ; i++){
+        if(*s==0) break;
+        putc(*s++);
+    }
+    return i;
+}
+
+short int
+iSerial::puts(const char* s)
+{
+    short int n = putstr(s);
+    putc(CR);
+    putc(LF);
+    return n;
+}
+
+char*
+iSerial::printf(const char* format, ...)
+{
+    va_list arg;
+    va_start(arg,format);
+    vsprintf(str, format, arg);
+    va_end(arg);
+    putstr(str);
+    return str;
+}
+
+
+void
+iSerial::flush(void)
+{
+    while(txbuf.check())
+        enable_uart_irq();
+}
+
+