topic LPC 3250 I2C transmission issue in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/LPC-3250-I2C-transmission-issue/m-p/543717#M12748 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by vikhyathk on Mon Oct 19 22:10:51 MST 2015</STRONG><BR /><SPAN>I am facing a problem with i2C transmission using LPC3250. I m using processor to interface FPGA with device id 0xA0. So the first data I put into '0x400a8000' (I2C2_TX) register is '0x1A0' and I see in the oscilloscope that start condition is generated and acknowledgement is present. </SPAN><BR /><BR /><SPAN>But Whenever I send a data byte later&nbsp; with LSB bit '1', the same data is being resent with LSB bit made '0'.</SPAN><BR /><SPAN>Example: If I put "11011001' into the register '0x400a8000' (I2C2_TX) Data found in scope is ["11011001" 'Ack bit' "11011000"'Ack bit']..</SPAN><BR /><SPAN>'Ack bit' is '0'.</SPAN><BR /><BR /><SPAN>Can anybody help me to solve the issue. </SPAN></BODY></HTML> Wed, 15 Jun 2016 18:28:05 GMT lpcware 2016-06-15T18:28:05Z LPC 3250 I2C transmission issue https://community.nxp.com/t5/LPC-Microcontrollers/LPC-3250-I2C-transmission-issue/m-p/543717#M12748 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by vikhyathk on Mon Oct 19 22:10:51 MST 2015</STRONG><BR /><SPAN>I am facing a problem with i2C transmission using LPC3250. I m using processor to interface FPGA with device id 0xA0. So the first data I put into '0x400a8000' (I2C2_TX) register is '0x1A0' and I see in the oscilloscope that start condition is generated and acknowledgement is present. </SPAN><BR /><BR /><SPAN>But Whenever I send a data byte later&nbsp; with LSB bit '1', the same data is being resent with LSB bit made '0'.</SPAN><BR /><SPAN>Example: If I put "11011001' into the register '0x400a8000' (I2C2_TX) Data found in scope is ["11011001" 'Ack bit' "11011000"'Ack bit']..</SPAN><BR /><SPAN>'Ack bit' is '0'.</SPAN><BR /><BR /><SPAN>Can anybody help me to solve the issue. </SPAN></BODY></HTML> Wed, 15 Jun 2016 18:28:05 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC-3250-I2C-transmission-issue/m-p/543717#M12748 lpcware 2016-06-15T18:28:05Z