Uno I2C problem with MCP3425 SOT23-6 eval board (ADC)

hi,

i have been trying make arduino uno work mcp3425 sot23-6 evaluation board, no success. me out? connected a4 pin sda , a5 pin scl pull-up resistor, , when probe, sda , scl pins, same. somehow sda looks same clock signal without signs of data traffic. checked if there short, couldn't find it. in serial monitor window, don't see anything. here code:


//include wire i2c library
#include <wire.h>
int sensor_address = b1101000;

void setup()
{
 //start serial communication @ 9600 baud
 serial.begin(9600);

 //create wire object
 wire.begin();
 delay(10);
}

void readsensor(byte *a, byte *b, byte *c)
{

 wire.begintransmission(sensor_address);
 wire.write(b10011000);
 wire.endtransmission();


 wire.requestfrom(sensor_address, 3);
 while(wire.available() == 0);
 *a = wire.read();  
 *b = wire.read();
 *c = wire.read();
}

void loop()
{
 byte aa, bb, cc;
 
 readsensor(&aa, &bb, &cc);


 serial.print(aa);
 serial.print("t");
 serial.print(bb);
 serial.print("t");
 serial.println(cc);

 delay(500);
}

here data sheet mcp3425:  http://ww1.microchip.com/downloads/en/devicedoc/22072a.pdf

your appreciated. thanks!

Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Uno I2C problem with MCP3425 SOT23-6 eval board (ADC)

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