topic Re: IIC on a MC68HC908JL16 Assembly Language in 8-bit Microcontrollers https://community.nxp.com/t5/8-bit-Microcontrollers/IIC-on-a-MC68HC908JL16-Assembly-Language/m-p/217273#M18929 <HTML><HEAD></HEAD><BODY><P>Hello Ingo,</P><P>&nbsp;</P><P>Don't know about the JL16 exactly but I have some assembly code for IIC in the MC9S08SH8 at this site:</P><P>&nbsp;</P><P><A href="http://www.rasmicro.com/DS1307.htm" rel="nofollow" target="_blank">http://www.rasmicro.com/DS1307.htm</A></P><P>&nbsp;</P><P>&nbsp;</P><P>Roger</P></BODY></HTML> Tue, 10 Aug 2010 03:02:01 GMT RogerSchaefer 2010-08-10T03:02:01Z IIC on a MC68HC908JL16 Assembly Language https://community.nxp.com/t5/8-bit-Microcontrollers/IIC-on-a-MC68HC908JL16-Assembly-Language/m-p/217272#M18928 <HTML><HEAD></HEAD><BODY><P>Hello to all!</P><P>&nbsp;</P><P>I working on a communication between an MC68HC908JL16 an a IIC device. I have a working write routine but I can not read from my IIC device.</P><P>&nbsp;</P><P>write:</P><P>&nbsp;mov I2C_adr,MMADR</P><P>&nbsp;mov I2C_data,MMDTR</P><P>&nbsp;bclr 3,MIMCR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;Transmit</P><P>&nbsp;bset 4,MIMCR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;Start</P><P>&nbsp;brclr 1,MMSR,*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;MMDTR empty-flag</P><P>&nbsp;bclr 4,MIMCR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;Stop</P><P>&nbsp;rts</P><P>&nbsp;</P><P>Read:</P><P>&nbsp;mov i2C_adr,MMADR</P><P>&nbsp;bset 0,MMADR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;;read bit set <SPAN class="j1">&nbsp;</SPAN></P><P>&nbsp;<SPAN class="j1">bclr</SPAN> <SPAN class="j1">3</SPAN>,<SPAN class="j1">MMCR</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;<SPAN class="j1">Ack</SPAN></P><P>&nbsp;<SPAN class="j1">bset</SPAN> <SPAN class="j1">3</SPAN>,<SPAN class="j1">MIMCR</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;<SPAN class="j1">Receive</SPAN></P><P>&nbsp;<SPAN class="j1">bset</SPAN> <SPAN class="j1">4</SPAN>,<SPAN class="j1">MIMCR</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;<SPAN class="j1">Start</SPAN></P><P>&nbsp;<SPAN class="j1">brclr</SPAN> <SPAN class="j1">0</SPAN>,<SPAN class="j1">MMSR</SPAN>,*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;<SPAN class="j1">MMDRR</SPAN> <SPAN class="j1">full</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="j1">The</SPAN> <SPAN class="j1">program</SPAN> <SPAN class="j1">stops</SPAN> <SPAN class="j1">always</SPAN> <SPAN class="j1">here</SPAN> <SPAN class="j1">and</SPAN> <SPAN class="j1">does</SPAN> <SPAN class="j1">not</SPAN> <SPAN class="j1">work</SPAN> <SPAN class="j1">further</SPAN></P><P>&nbsp;<SPAN class="j1">bclr</SPAN> <SPAN class="j1">4</SPAN>,<SPAN class="j1">MIMCR</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;<SPAN class="j1">Stop</SPAN></P><P>&nbsp;<SPAN class="j1">mov</SPAN> <SPAN class="j1">MMDRR</SPAN>,<SPAN class="j1">I2C</SPAN>_<SPAN class="j1">Data</SPAN></P><P>&nbsp;<SPAN class="j1">rts</SPAN></P><P>&nbsp;</P><P><SPAN class="j1">There</SPAN> <SPAN class="j1">must</SPAN> <SPAN class="j1">be</SPAN> <SPAN class="j1">an</SPAN> <SPAN class="j1">little</SPAN> <SPAN class="j1">error</SPAN> <SPAN class="j1">in</SPAN> <SPAN class="j1">my</SPAN> <SPAN class="j1">read</SPAN> <SPAN class="j1">routine</SPAN>. <SPAN class="j1">Can</SPAN> <SPAN class="j1">anyone</SPAN> <SPAN class="j1">help</SPAN> <SPAN class="j1">me</SPAN> <SPAN class="j1">please</SPAN>?</P><P>&nbsp;</P><P><SPAN class="j1">Regards</SPAN>,</P><P>&nbsp;</P><P><SPAN class="j1">Ingo</SPAN></P></BODY></HTML> Sun, 08 Aug 2010 12:45:46 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/IIC-on-a-MC68HC908JL16-Assembly-Language/m-p/217272#M18928 i_kauf 2010-08-08T12:45:46Z Re: IIC on a MC68HC908JL16 Assembly Language https://community.nxp.com/t5/8-bit-Microcontrollers/IIC-on-a-MC68HC908JL16-Assembly-Language/m-p/217273#M18929 <HTML><HEAD></HEAD><BODY><P>Hello Ingo,</P><P>&nbsp;</P><P>Don't know about the JL16 exactly but I have some assembly code for IIC in the MC9S08SH8 at this site:</P><P>&nbsp;</P><P><A href="http://www.rasmicro.com/DS1307.htm" rel="nofollow" target="_blank">http://www.rasmicro.com/DS1307.htm</A></P><P>&nbsp;</P><P>&nbsp;</P><P>Roger</P></BODY></HTML> Tue, 10 Aug 2010 03:02:01 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/IIC-on-a-MC68HC908JL16-Assembly-Language/m-p/217273#M18929 RogerSchaefer 2010-08-10T03:02:01Z