main.c

Mega16 + MCP3208 12bit A/D >> C-source code >> AVRSTUDIO project >> WinAVR

// AVR mega16 + MCP3208 (12bit-A/D,SPI port) + UART
// by   >> [e-mail]
// date >> 23 September 2007
// Dept. of Physics, Fact. of Science, Ubonrajathane University

#include <avr/io.h>
#include <avr/pgmspace.h>
#include <avr/signal.h>
#include <avr/interrupt.h>
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>

#include "delay.h"
#include "myDef.h"
#include "uart.h"
#include "mcp3208.h"

//**************************** Global Constant + Variable ************************//

const char usartPGM0[] PROGMEM = " >> AVR Project :: AVR + 8Ch-12Bit A/D\n\r";
const char usartPGM1[] PROGMEM = " >> MCU : ATMega16 , A/D Device : MCP3208\n\r";
const char usartPGM2[] PROGMEM = " >> by [e-mail]\n\r";
const char usartPGM3[] PROGMEM = " Command 0,1,2,3: \"0\" --> start A/D \n\r";
const char usartPGM4[] PROGMEM = " AtoD 12Bit process \n\r";
const char usartPGM5[] PROGMEM = " Revieve \"1\" test \n\r";
const char usartPGM6[] PROGMEM = " Revieve \"2\" test \n\r";
const char usartPGM7[] PROGMEM = " Revieve \"3\" test \n\r";

PGM_P usartPointer[8] PROGMEM = {usartPGM0,usartPGM1,usartPGM2,usartPGM3,usartPGM4,usartPGM5
                                ,usartPGM6,usartPGM7};

//************************ Sub Function Prototype ********************************//

void MCP3208_ShowData(unsigned char ADcontrol,unsigned char ADchanel);

//*************************** main Program ***************************************//

int main (void)
{

	MCP3208_spiInit();  // init SPI mode3 , fclk/64

	USART_Init(USART_BAUD_SELECT(USART_BAUD_RATE,F_CPU));   // set uart baudrate = 19200 
    sei();	
     
    usart_puts_p(usartPointer[0]);
	usart_puts_p(usartPointer[1]);
	usart_puts_p(usartPointer[2]);
	usart_puts_p(usartPointer[3]);

	while(1)
	{
        while(DataInReceiveBuffer()) /* True if "Not" empty */		
		{
            if (DataInReceiveBuffer())
				
			c = usart_getc();
					
			if(c =='0')   // Recieve "0"  for start A/D
            {	
				usart_puts_p(usartPointer[4]);
				do{

					for(unsigned char i=0;i<=7;i++)
					{
                		MCP3208_ShowData(SingleEnd,i);
					    delay_us(100);
					}
					usart_puts("\n");
				    delay_ms(499);

				}while(!DataInReceiveBuffer());
        
             }
     
			if (c =='1')  // Recieve "1"  test
			{
				usart_puts_p(usartPointer[5]);
			}

            if(c =='2')   // Recieve "2"  test
            {	
                usart_puts_p(usartPointer[6]);
            }

            if (c =='3')  // Recieve "3"  test
            {
               usart_puts_p(usartPointer[7]);
            }

      	}/* End of check Command data buffer*/	
		
	}/* End of While() loop  */

	return 0;
 }/* Eend of main() loop  */

// ********************  Sub Function  ***************************  //

void MCP3208_ShowData(unsigned char ADcontrol,unsigned char ADchanel)
{
unsigned int temp16Bit;	

   	temp16Bit = MCP3208_spiRead(ADcontrol,ADchanel);

	usart_puts("CH-");
	usart_SendInt(ADchanel);	
	usart_puts(" = ");
	usart_SendInt(temp16Bit);
	usart_puts(" , ");

	gReciveHighByte=0;
	gReciveLowByte=0;
	temp16Bit=0;
}

// ********************  END  ***************************  //