http://forums.leaflabs.com/topic.php?id=74452 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:00:45 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=74452#post-105778 Thu, 03 Sep 2015 13:07:02 +0000 gbulmer 105778@http://forums.leaflabs.com/ <p>@cherigo - Welcome to the forum.</p> <p>Would you please confirm that this <a href="http://www.lsicsi.com/pdfs/Data_Sheets/LS7366R.pdf">LS7366R</a> is the device?</p> <p>What exactly do you mean by "not working"?</p> <p>At first glance, the code looks okay. Have you access to an oscilloscope to see that the signal matches the Arduino's?</p> <p>I would try to make it behave as closely as reasonable to the arduino code, so I might change the SPI speed in<br /> <code>spi.begin(SPI_18MHZ, MSBFIRST, 0);</code><br /> to<br /> <code>spi.begin(SPI_4_5MHZ, MSBFIRST, 0);</code></p> <p>Have you got access to an easy to use device to test the SPI? For example a 74HC595 SIPO shift-register. They are reasonably low-cost (about $2 for 5)</p> <p>There is an example of how to drive that 74HC595 using software <a href="http://static.leaflabs.com/pub/leaflabs/maple-docs/latest/lang/api/shiftout.html">here</a>.<br /> It should be easy to monitor it working by putting a few LEDs on its output pins.</p> <p>(Full disclosure: I am not a member of LeafLabs staff.) </p> http://forums.leaflabs.com/topic.php?id=74452#post-105777 Wed, 02 Sep 2015 21:24:56 +0000 cherigo 105777@http://forums.leaflabs.com/ <p>hi guys i am new in this forum my question is the next :<br /> i have a flymaple that i am trying connect to a quadrature counter LS7366R the code for do this is available in arduino. the communication is spi; between the maple and the counter but i not sure how work the SPI library in maple</p> <p>ARDUINO CODE<br /> #include &lt;SPI.h&gt;<br /> //#include &lt;Arduino.h&gt;</p> <p>#define CLR B00000000<br /> #define RD B01000000<br /> #define WR B10000000<br /> #define LOAD B11000000</p> <p>#define MDR0 B00001000<br /> #define MDR1 B00010000<br /> #define DTR B00011000<br /> #define CNTR B00100000<br /> #define OTR B00101000<br /> #define STR B00110000</p> <p>// filter factor 1<br /> // async index<br /> // no index<br /> // free-running<br /> // 4x quadrature<br /> #define MDR0_CONF B00000011</p> <p>// no flag<br /> // enabled<br /> // 32 bits<br /> #define MDR1_CONF B00000000</p> <p>void setup() {<br /> Serial.begin(9600);<br /> SPI.begin();<br /> pinMode(SS, OUTPUT);</p> <p> digitalWrite(SS, LOW);<br /> SPI.transfer(WR | MDR0);<br /> SPI.transfer(MDR0_CONF);<br /> digitalWrite(SS, HIGH);</p> <p> digitalWrite(SS, LOW);<br /> SPI.transfer(WR | MDR1);<br /> SPI.transfer(MDR1_CONF);<br /> digitalWrite(SS, HIGH);</p> <p> digitalWrite(SS, LOW);<br /> SPI.transfer(CLR | CNTR);<br /> digitalWrite(SS, HIGH);<br /> }</p> <p>long count = 0;</p> <p>void loop() {<br /> digitalWrite(SS, LOW);<br /> byte b = SPI.transfer((byte) RD | CNTR);<br /> count = SPI.transfer(0x00);<br /> count &lt;&lt;= 8;<br /> count |= SPI.transfer(0x00);<br /> count &lt;&lt;= 8;<br /> count |= SPI.transfer(0x00);<br /> count &lt;&lt;= 8;<br /> count |= SPI.transfer(0x00);<br /> count = count*0.351;<br /> digitalWrite(SS, HIGH);<br /> Serial.print(count);<br /> Serial.println();</p> <p>}</p> <p>//////////////////////////////////////////////////////////////////////<br /> i suppose that is the way to do in flymaple board but not working</p> <p>#include &lt;spi.h&gt;</p> <p>#define CLR 0x00<br /> #define RD 0x40<br /> #define WR 0x80<br /> #define LOAD 0xC0</p> <p>#define MDR0 0x08<br /> #define MDR1 0x10<br /> #define DTR 0x18<br /> #define CNTR 0x20<br /> #define OTR 0x28<br /> #define STR 0x30</p> <p>// filter factor 1<br /> // async index<br /> // no index<br /> // free-running<br /> // 4x quadrature<br /> #define MDR0_CONF 0x03</p> <p>// no flag<br /> // enabled<br /> // 32 bits<br /> #define MDR1_CONF 0x00</p> <p>HardwareSPI spi(2);</p> <p>void setup() {<br /> spi.begin(SPI_18MHZ, MSBFIRST, 0);<br /> SerialUSB.begin();<br /> pinMode(D31, OUTPUT);</p> <p> digitalWrite(D31, LOW);<br /> spi.transfer(WR | MDR0);<br /> spi.transfer(MDR0_CONF);<br /> digitalWrite(D31, HIGH);</p> <p> digitalWrite(D31, LOW);<br /> spi.transfer(WR | MDR1);<br /> spi.transfer(MDR1_CONF);<br /> digitalWrite(D31, HIGH);</p> <p> digitalWrite(D31, LOW);<br /> spi.transfer(CLR | CNTR);<br /> digitalWrite(D31, HIGH);</p> <p>}</p> <p>long count = 0;</p> <p>void loop() {<br /> digitalWrite(D31, LOW);<br /> byte b = spi.transfer( RD | CNTR);<br /> count = spi.transfer(0x00);<br /> count &lt;&lt;= 8;<br /> count |= spi.transfer(0x00);<br /> count &lt;&lt;= 8;<br /> count |= spi.transfer(0x00);<br /> count &lt;&lt;= 8;<br /> count |= spi.transfer(0x00);<br /> count = count*0.351;<br /> digitalWrite(D31, HIGH);</p> <p> SerialUSB.print(count);<br /> SerialUSB.println();<br /> }</p> <p>please please help </p>