Change Slave sends '0' during convert prozess on all DS18B20

[owSlave2.git] / common / I2C / MAX44009.c

diff --git a/common/I2C/MAX44009.c b/common/I2C/MAX44009.c
index eabcda6..426098e 100644 (file)
--- a/common/I2C/MAX44009.c
+++ b/common/I2C/MAX44009.c
@@ -38,22 +38,38 @@
 #include "USI_TWI_Master.h"
 #include "MAX44009.h"
 
-double MAX44009getlux()  {
-       volatile uint8_t b1,b2;
+uint8_t checkMAX44009(uint8_t nr) {
+       volatile uint8_t b1;
+       nr=(nr<<1)&0x02f;
        
+       I2c_StartCondition();
+       I2c_WriteByte(0b10010100|nr);
+       I2c_WriteByte(0x03);
+       I2c_StartCondition();
+       I2c_WriteByte (0b10010101|nr);
+       b1 =I2c_ReadByte(NO_ACK);
+       I2c_StopCondition();
+       return b1!=0xFF;
+       
+}
+
+
+double MAX44009getlux(uint8_t nr)  {
+       volatile uint8_t b1,b2;
+       nr=(nr<<1)&0x02f;
        
        I2c_StartCondition();
-       I2c_WriteByte(0b10010100);
+       I2c_WriteByte(0b10010100|nr);
        I2c_WriteByte(0x03);
        I2c_StartCondition();
-       I2c_WriteByte (0b10010101);
+       I2c_WriteByte (0b10010101|nr);
        b1 =I2c_ReadByte(NO_ACK);
        I2c_StopCondition();
        I2c_StartCondition();
-       I2c_WriteByte(0b10010100);
+       I2c_WriteByte(0b10010100|nr);
        I2c_WriteByte(0x04);
        I2c_StartCondition();
-       I2c_WriteByte (0b10010101);
+       I2c_WriteByte (0b10010101|nr);
        b2 =I2c_ReadByte(NO_ACK);
        I2c_StopCondition();
        uint8_t exponent = (b1 & 0xF0) >> 4;// upper four bits of high byte register