Added Project Files

Added files

1 files changed, 195 insertions, 0 deletions

diff --git a/Keithley179.c b/Keithley179.c
new file mode 100644
index 0000000..734336c
--- /dev/null
+++ b/Keithley179.c
@@ -0,0 +1,195 @@
+
+#ifndef F_CPU
+#define F_CPU 4000000UL
+#endif
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#define UART_BAUDRATE 9600
+
+#define UBRR_VAL (F_CPU / UART_BAUDRATE * 16) - 1
+
+#define b1 PC0
+#define b2 PC1
+#define b3 PC2
+#define b4 PC3
+
+#define d1 PD7
+#define d2 PD4
+#define d3 PD5
+#define d4 PD6
+#define d5 PC3
+
+#define busy PB7 //Busy not Used
+
+//Status
+uint8_t UART_RX;
+uint8_t UART_RX_END;
+uint8_t UART_isInit;
+
+//Buffers
+char out[5]; //Buffer for ADC Input
+char in[16]; //UART Input Buffer
+uint8_t in_cntr; //Counter for UART Input Buffer
+
+ISR(USART_RXC_vect)
+{
+	cli();
+	in[in_cntr] = UDR;
+	if(in[in_cntr] == '\n')
+	UART_RX_END = 1; //Set RX End Flag
+	
+	//Check if Buffer is full
+	if(in_cntr < 15)
+	in_cntr ++;
+	else
+	{
+		in_cntr = 0;
+		UART_RX_END = 1; //Set RX End Flag
+	}
+	sei();
+}//USART_RXC_vect
+
+void UART_Init();
+/*
+*Initializes the  UART Interface
+*/
+
+void UART_Handle();
+/*
+* should be called on Interrupt of UART
+* Handles UART Communication
+*/
+
+void UART_Send(char *_cSend);
+/*
+*Sends String over UART
+*/
+
+int main(void)
+{
+	//clear Buffers
+	for(int i = 0; i < 5;i++)
+	{
+		out[i] = 0;
+	}
+	
+	for(int i = 0; i < 16;i++)
+	{
+		in[i] = 0;
+	}
+	
+	
+	char temp = 0;
+	in_cntr = 0;
+	
+	UART_RX = 0;
+	UART_RX_END = 0;
+	UART_isInit = 0;
+	
+	//Set DDRD as Input
+	DDRD = 0;
+	DDRC = 0;
+	
+	DDRD |= (1<<PD1); //TX Pin
+	
+	sei();
+	
+	//INIT UART Interface
+	UART_Init();
+	UART_Send("Hello World!");
+	
+	//main loop
+	while(1)
+	{
+		while(!(PORTD & (1<<d1)));
+		temp = PINB << 4;
+		out[4] = temp >> 4;
+		temp = 0;
+		
+		while(!(PORTD & (1<<d2)));
+		temp = PINB << 4;
+		out[3] = temp >> 4;
+		temp = 0;
+		
+		while(!(PORTD & (1<<d3)));
+		temp = PINB << 4;
+		out[2] = temp >> 4;
+		temp = 0;
+		
+		while(!(PORTD & (1<<d4)));
+		temp = PINB << 4;
+		out[1] = temp >> 4;
+		temp = 0;
+		
+		while(!(PORTC & (1<<d5)));
+		temp = PINB << 4;
+		out[0] = temp >> 4;
+		temp = 0;
+		
+		
+		//Convert to ASCII
+		for(int i = 0; i < 5;i++)
+		{
+			out[i] = out[i] + 48;
+		}
+		
+		UART_Send(out);
+		//Handle UART
+		//UART_Handle();
+		
+		//Reset Buffer
+		for(int i = 0; i < 5;i++)
+		{
+			out[i] = 0;
+		}
+		
+	}
+	
+	return 0;
+}//main
+
+
+
+void UART_Init()
+{
+	if(UART_isInit == 0)
+	{
+		//Calculate Value for Register
+		uint16_t baudrate = (4000000 / (9600 * 16)) - 1;
+		
+		//Set Baudrate
+		UBRRL = baudrate;
+		UBRRH = (baudrate >> 8);
+		
+		UCSRB |= (1<<RXEN) | (1<<TXEN); //Enable Reciever and Transmitter
+		UCSRB |= (1<<RXCIE); //Enable Recieve Complete Interrupt
+		
+		UART_isInit = 1;
+	}
+	
+}//UART_Init
+
+
+
+void UART_Handle()
+{
+	if(UART_isInit == 1)
+	{
+		
+	}
+}//UART_Handle
+
+void UART_Send(char *_cSend)
+{
+	if(UART_isInit == 1)
+	{
+		while(*_cSend)
+		{
+			while (!(UCSRA & (1<<UDRE)));
+			UDR = _cSend;
+			_cSend++;
+		}
+	}
+}//UART_send
\ No newline at end of file