http://forums.leaflabs.com/topic.php?id=1440 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:17:47 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1440#post-8555 Fri, 09 Mar 2012 15:44:14 +0000 Abo 8555@http://forums.leaflabs.com/ <p>Sorry for the series of posts... I was rushing through things... Problem SOLVED (for now)</p> <p>1. The regular pulse is on MOSI and the NSS (not MOSI)</p> <p>In version 0.0.9, the NSS still controlled by the programmer after Spi.begin. In 0.0.12 (probably 0.0.11 or before too), NSS somehow doesn't response to the digitalWrite(10, HIGH); line.</p> <p>2. I put the "pinMode(10, OUTPUT);" line AFTER Spi.begin, then everything started to work again. So somehow we need to explicitly 're-mode' the NSS pin in 0.0.12</p> <p>Problem solved.</p> <p>There is a related post on NSS in <a href="http://forums.leaflabs.com/topic.php?id=1020" rel="nofollow">http://forums.leaflabs.com/topic.php?id=1020</a> </p> http://forums.leaflabs.com/topic.php?id=1440#post-8552 Fri, 09 Mar 2012 15:12:52 +0000 Abo 8552@http://forums.leaflabs.com/ <p>Hello all - I reduce the above program into a smaller one</p> <p>//*********************<br /> void setup()<br /> {<br /> delay(3000);<br /> pinMode(10, OUTPUT);<br /> pinMode(9, OUTPUT);<br /> Spi.begin(SPI_1_125MHZ, MSBFIRST, 1);<br /> }</p> <p>void loop()<br /> {<br /> digitalWrite(10, LOW);<br /> delayMicroseconds(50);<br /> Spi.send(0x0C4);<br /> digitalWrite(10, HIGH);<br /> delay(1000);<br /> }</p> <p>I'm trying to see the difference between 0.0.9 vs 0.0.12 on the MISO and MOSI line. For 0.0.9, I see a regular pulse on both MISO and MOSI every second. For 0.0.12, I see only the first pulse, and seems like the SPI is dead there on. Any ideas? </p> http://forums.leaflabs.com/topic.php?id=1440#post-8547 Fri, 09 Mar 2012 13:01:43 +0000 Abo 8547@http://forums.leaflabs.com/ <p>I’m currently testing with mirgrating my project from 0.0.9 IDE to 0.0.12 IDE. I found out my SPI communication got broken in the 0.0.12 IDE. I wonder what is the difference in the setup process ?</p> <p>I narrow down my code to the following:</p> <p>//*************************************<br /> HardwareSPI Spi(1);<br /> int SPI_OUT = 0x0A;<br /> int Configuration_Array[38]={0x0A, 0x0A, 0x0F, 0x0C, 0x03, 0x0E, 0x00, 0x01, 0x00, 0x0E, 0x0E, 0x0A, 0x0C, 0x0A, 0x0D, 0x00, 0x02, 0x0D, 0x0C, 0x00, 0x01, 0x0C, 0x00, 0x04, 0x06, 0x00, 0x05, 0x00, 0x06, 0x0A, 0x05, 0x05, 0x0A, 0x09, 0x00, 0x03, 0x00, 0x0A};</p> <p>void setup()<br /> {<br /> delay(3000);<br /> pinMode(10, OUTPUT);<br /> pinMode(9, OUTPUT);</p> <p> Spi.begin(SPI_1_125MHZ, MSBFIRST, 1); // resetting the slave device<br /> digitalWrite(9, LOW);<br /> delayMicroseconds(200);<br /> digitalWrite(9, HIGH);</p> <p> for (uint8 i=0;i&lt;38;i++)<br /> {<br /> digitalWrite(10, LOW); // CS slave<br /> delayMicroseconds(50);<br /> SPI_OUT = Spi.send(Configuration_Array[i]);<br /> digitalWrite(10, HIGH);</p> <p> SerialUSB.println(SPI_OUT, HEX);<br /> }<br /> }<br /> //*************************************</p> <p>The above code works fine in 0.0.9, but doesn’t work at all in 0.0.12 (using the same hardware)</p> <p>Many thanks! </p>