topic LPC1226 SSP FIFO problem in LPCXpresso IDE https://community.nxp.com/t5/LPCXpresso-IDE/LPC1226-SSP-FIFO-problem/m-p/534112#M3935 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by samc on Fri Feb 10 06:41:45 MST 2012</STRONG><BR /><SPAN>Hello, </SPAN><BR /><BR /><SPAN>just wanted to post this, might save some time:</SPAN><BR /><BR /><SPAN>I found the SSP interface on LPC1226 acts strange:</SPAN><BR /><SPAN>I set SSP_CLK to 36MHZ and also CPU clock was 36MHZ, everything working fine.</SPAN><BR /><SPAN>Then switched cpu clock to 12MHz by SYSAHBCLKDIV and thats where the problem started: the SSP FIFO didnt act as a FIFO anymore, more like an eight byte shift register. Resetting the pheriperal didnt help also.</SPAN><BR /><BR /><SPAN>Solution:</SPAN><BR /><SPAN>Finally, I set the SSP_CLK to 12MHz and everything went fine.</SPAN><BR /><BR /><SPAN>Samc</SPAN></BODY></HTML> Thu, 16 Jun 2016 02:59:28 GMT lpcware 2016-06-16T02:59:28Z LPC1226 SSP FIFO problem https://community.nxp.com/t5/LPCXpresso-IDE/LPC1226-SSP-FIFO-problem/m-p/534112#M3935 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by samc on Fri Feb 10 06:41:45 MST 2012</STRONG><BR /><SPAN>Hello, </SPAN><BR /><BR /><SPAN>just wanted to post this, might save some time:</SPAN><BR /><BR /><SPAN>I found the SSP interface on LPC1226 acts strange:</SPAN><BR /><SPAN>I set SSP_CLK to 36MHZ and also CPU clock was 36MHZ, everything working fine.</SPAN><BR /><SPAN>Then switched cpu clock to 12MHz by SYSAHBCLKDIV and thats where the problem started: the SSP FIFO didnt act as a FIFO anymore, more like an eight byte shift register. Resetting the pheriperal didnt help also.</SPAN><BR /><BR /><SPAN>Solution:</SPAN><BR /><SPAN>Finally, I set the SSP_CLK to 12MHz and everything went fine.</SPAN><BR /><BR /><SPAN>Samc</SPAN></BODY></HTML> Thu, 16 Jun 2016 02:59:28 GMT https://community.nxp.com/t5/LPCXpresso-IDE/LPC1226-SSP-FIFO-problem/m-p/534112#M3935 lpcware 2016-06-16T02:59:28Z