Content originally posted in LPCWare by imroun1992 on Fri Sep 27 11:51:04 MST 2013
Hello,
I am trying to read the temperature from LM75 Thermometer, I use KEIL MCB4357 Development Board.The program is :
#include <LPC43xx.h>
#include "LED.h"
#include "KBD.h"
#include "GLCD.h"
#include "TH_LM75.h"
#include "I2C.h"
#define KEY_P4_0 1
#define KEY_P4_3 2
#define KEY_P4_4 4
#define KEY_WAKEUP 8
#define Font1 1
#define Font0 0
#define TH_I2C_ADDR 0x48
#define REG_TEMP 0x00
#define REG_CONF 0x01
#define REG_THYS 0x02
#define REG_TOS 0x03
int main (void) {
LED_Init();
KBD_Init ();
GLCD_Init();
TH_Init();
I2C_Init();
LED_Val(0x55);
GLCD_Clear (White);
GLCD_SetBackColor (Blue);
GLCD_SetTextColor (White);
GLCD_DisplayString (0, 0, 1, " IUT CACHAN GEII2 ");
GLCD_DisplayString (1, 0, 1, " Projet Quadricoptère ");
GLCD_SetBackColor (White);
GLCD_SetTextColor (Blue);
while (1) {
if (KBD_GetKeys() & KEY_P4_0)
{
LED_On(1);
GLCD_SetTextColor(Black);
}
else
{
LED_Off(1);
GLCD_SetTextColor(LightGrey);
}
GLCD_DisplayString (4, 9, 1, "P4_0");
if (KBD_GetKeys() & KEY_P4_3)
{
LED_On(2);
GLCD_SetTextColor(Black);
}
else
{
LED_Off(2);
GLCD_SetTextColor(LightGrey);
}
GLCD_DisplayString (4, 14, 1, "P4_3");
if (KBD_GetKeys() & KEY_P4_4)
{
LED_On(3);
GLCD_SetTextColor(Black);
}
else
{
LED_Off(3);
GLCD_SetTextColor(LightGrey);
}
GLCD_DisplayString (5, 9, 1, "P4_4");
if (KBD_GetKeys() & KEY_WAKEUP)
LED_On(4);
else
LED_Off(4);
TH_GetTemp(&Temp);
}
}
And finally i try to call this function but i don't know can i call, and anyone to help me to activate I2C for reading temperature :
uint16_t TH_GetTemp (TH_DATA *ThDat) {
uint8_t val[2];
if (I2C_RdData (TH_I2C_ADDR, REG_TEMP, val, 2) == 0) {
ThDat->Temp = (val[0] << 8) | (val[1] & 0x80) ;
return (0);
}
return (1);
}
