1 files changed, 206 insertions, 0 deletions
diff --git a/src/core/uart.cpp b/src/core/uart.cpp
new file mode 100755
index 0000000..ea61c3c
--- /dev/null
+++ b/src/core/uart.cpp
@@ -0,0 +1,206 @@
+/*
+ * uart.cpp
+ *
+ *  Created on: 2011/07/30
+ *      Author: lynxeyed
+ */
+
+#include <string.h>
+#include "LPC11xx.h"
+#include "uart.h"
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+  // Flag mask for UART_LSR register.
+const unsigned long     LSR_TEMT	= 0x40;
+const unsigned long     LSR_THRE	= 0x20;
+const unsigned long     LSR_RDR		= 0x01;
+const unsigned long     ACR_START	= 0x01;
+const unsigned long		IER_RLS		= 0x04;
+const unsigned long		IER_RBR		= 0x01;
+
+USerial Serial;
+
+USerial::USerial()//USerial(SERIAL_PORT port)			//define constructor
+{
+	this->port = marySerial1;			//default = marySerial1
+	format = OCT;
+	speed = 9600;				//baudrate
+	//begin(speed);
+}
+
+USerial::~USerial()
+{
+
+}
+
+void USerial::begin(int speed)
+{
+	this->speed = speed;
+	// Divisor ratio
+	unsigned long Fdiv;
+
+	// Configure P1[7] as TXD output.
+	LPC_IOCON->PIO1_7 &= ~0x07;         // FUNC=000 (GPIO)
+	LPC_IOCON->PIO1_7 |= 0x01;          // FUNC=001 (TXD)
+
+	// Configure P1[6] as RXD input.
+	LPC_IOCON->PIO1_6 &= ~0x07;         // FUNC=000 (GPIO)
+	LPC_IOCON->PIO1_6 |= 0x01;          // FUNC=001 (RXD)
+
+	// Enable UART clock
+	LPC_SYSCON->SYSAHBCLKCTRL |= (1<<12);   // UART=1
+
+	// Enable UART peripheral clock
+	LPC_SYSCON->UARTCLKDIV = 0x01;      // DIV=1
+
+	// fix baud-rate
+	Fdiv = (SystemCoreClock * LPC_SYSCON->SYSAHBCLKDIV) / (LPC_SYSCON->UARTCLKDIV * 16 * speed);
+
+	// Set the baud rate divisor value
+	LPC_UART->LCR |= 0x80;
+	LPC_UART->DLM = Fdiv / 256;
+	LPC_UART->DLL = Fdiv % 256;
+	LPC_UART->LCR &= ~0x80;
+
+	// Configure UART module as
+	//   8 bit, 1 stop bit, no parity
+	//   Enable and reset TX and RX FIFO.
+	LPC_UART->LCR = 0x03;
+	LPC_UART->FCR = 0x07;
+
+}
+
+void USerial::end()
+{
+	return;
+}
+
+void USerial::write(const char c)	//uart_putc
+{
+	// Wait for TX buffer empty
+	while (!(LPC_UART->LSR & LSR_THRE));
+	// Put a character
+	LPC_UART->THR = c;
+	return;
+}
+
+void USerial::print(const char *s)	//uart_puts
+{
+    int n;
+    for (n = 0; *s; s++, n++) {
+        write(*s);
+    }
+    //return n;
+    return;
+}
+
+void USerial::print(int val, RADIX_FORMAT format)
+{
+	if(format == BYTE)
+	{
+		write((char)(val & 0xff));
+		return;
+	}
+	char s[32];
+	int i,j;
+	i=j=0; // header of strings
+	if (val<0)
+	{ //minus value
+		s[i]='-';
+		val=~val+1;
+		i++;
+		j++;
+	}
+	switch(format)
+	{
+	case BIN:
+		while (val>0)
+		{ // do until zero
+			s[i++]=radix_bin[val%format];
+			val/=format;
+		}
+		break;
+
+	case OCT:
+		while (val>0)
+		{ // do until zero
+			s[i++]=radix_oct[val%format];
+			val/=format;
+		}
+		break;
+
+	case DEC:	//RADIX = Decimal
+		while (val>0)
+		{ // do until zero
+			s[i++]=radix_dec[val%format];
+			val/=format;
+		}
+		break;
+
+	case HEX:	//RADIX = Hexadecimal
+		while (val>0)
+		{ // do until zero
+			s[i++]=radix_hex[val%format];
+			val/=format;
+		}
+		break;
+	default:
+		break;
+	}
+	s[i--]='\0'; // EOF
+	while (j<i)
+	{ // reverse strings array
+	char t;
+	t=s[j]; s[j]=s[i]; s[i]=t;
+	j++; i--;
+	}
+	print(s);
+
+	return ;
+}
+
+void USerial::write(const char *s, int length)
+{
+	int n;
+	for(n=0;n<length;s++,n++)
+	{
+		write(*s);
+	}
+	return;
+}
+
+void USerial::println(const char *s)
+{
+	print(s);
+	write ('\r');
+	write ('\n');
+	return;
+}
+
+
+void USerial::println(int val, RADIX_FORMAT format)
+{
+	print(val,format);
+	write ('\r');
+	write ('\n');
+	return;
+}
+
+int USerial::available(void)
+{
+	return (LPC_UART->LSR & LSR_RDR);
+}
+
+int USerial::read(void)
+{
+	// Wait for RX buffer valid
+	//while (!(LPC_UART->LSR & LSR_RDR));
+	return LPC_UART->RBR;
+}
+
+#ifdef __cplusplus
+} //extern "C"
+#endif