trunk/PIC/main.c

/* H7 -projekt opgave */

#include <pic18.h>
#include "delay.h"
#include "i2c.h"
#include "lcd.h"


#define TC74 0x9A /* I2C TC74 IC */

void i2c_init(void)
{
#ifdef I2C_MODULE
    SSPMode(MASTER_MODE);
    SSPEN = 1;
    CKP = 1;
#else
    SCL_DIR = I2C_OUTPUT;
    SDA_DIR = I2C_OUTPUT;
    SDA = 0;
    SCL = 0;
#endif
}

char ReadTemp(void)
{
        char temp;
        i2c_WriteTo(TC74);
        i2c_PutByte(0x00); //tell TC74 we want to read
        i2c_ReadFrom(TC74);
        temp = i2c_GetByte(I2C_LAST);
        i2c_Stop(); //assert a stop condition on SDA & SCL
        return temp;
}

void main(void) 
{
        lcd_init(0); //init in 4-bit mode
        i2c_init();
        
        while (1)
        {
        }
}
1	/* H7 -projekt opgave */
2
3	#include <pic18.h>
4	#include "delay.h"
5	#include "i2c.h"
6	#include "lcd.h"
7
8
9	#define TC74 0x9A /* I2C TC74 IC */
10
11	void i2c_init(void)
12	{
13	#ifdef I2C_MODULE
14	SSPMode(MASTER_MODE);
15	SSPEN = 1;
16	CKP = 1;
17	#else
18	SCL_DIR = I2C_OUTPUT;
19	SDA_DIR = I2C_OUTPUT;
20	SDA = 0;
21	SCL = 0;
22	#endif
23	}
24
25	char ReadTemp(void)
26	{
27	char temp;
28	i2c_WriteTo(TC74);
29	i2c_PutByte(0x00); //tell TC74 we want to read
30	i2c_ReadFrom(TC74);
31	temp = i2c_GetByte(I2C_LAST);
32	i2c_Stop(); //assert a stop condition on SDA & SCL
33	return temp;
34	}
35
36	void main(void)
37	{
38	lcd_init(0); //init in 4-bit mode
39	i2c_init();
40
41	while (1)
42	{
43	}
44	}