http://forums.leaflabs.com/topic.php?id=2164 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:18:42 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=2164#post-11820 Wed, 18 Jul 2012 22:50:53 +0000 feurig 11820@http://forums.leaflabs.com/ <p>FYI. The libmaple spi port implementation has a nice chip select mechanism for each port: nssPin() ( zb. digitalWrite(wifispi-&gt;nssPin(),LOW); )</p> <p>Unless you are a hardcore "arduino style" coder that stuff should never be hard coded. </p> http://forums.leaflabs.com/topic.php?id=2164#post-11818 Wed, 18 Jul 2012 19:18:31 +0000 asterix 11818@http://forums.leaflabs.com/ <p>Also, try putting in a 3 second or so delay before you begin spi communication with the WiFly as it takes a little while to boot up at power on (I've found at least anyway - particularly if it isn't configured). </p> http://forums.leaflabs.com/topic.php?id=2164#post-11817 Wed, 18 Jul 2012 19:15:11 +0000 asterix 11817@http://forums.leaflabs.com/ <p>Shouldn't:</p> <p>write_register(byte(i) &lt;&lt; 3, 0x02);</p> <p>come after:<br /> WiFly.write(SPI_READ_MODE_FLAG | address);</p> <p>Im working on a WiFly project at the moment (using a gsx breakout board with RN 131C).<br /> I gave up trying to configure the WiFly through UART (rx tx) and put my WiFly on my network by telneting via the adhoc method (described in the documentation).</p> <p>Once that was done I could easily receive telnet commands over the UART. Haven't quite made it to spi yet but fingers crossed.</p> <p>Perhaps try getting it on your network first and seeing if you can catch some telnet data rather than expecting a response from WiFly from a maple write/read scenario? </p> http://forums.leaflabs.com/topic.php?id=2164#post-11786 Tue, 17 Jul 2012 07:40:45 +0000 pmp0x 11786@http://forums.leaflabs.com/ <p>Hello!<br /> I'm new to the microcontroller-world so this might be more of a beginner question.<br /> But I'm trying work with the WiFly-Shield from Sparkfun. For that to work I figure out that I have to setup the onboard SPI-to-Uart chip (<a href="http://www.sparkfun.com/datasheets/Components/SMD/SC16IS740_750_760.pdf">SC16IS750</a> ) [I think it would have been way easier to just use the RN-131-C chip over UART but well… ]</p> <p>So the first attempt to just drop in the WiFly-Library and try to run the SpiUartTerminal-example didn't work out. Even though I modified the SpiUart.cpp that it should have run with Maple… Therefore I tried the most simple attemp…just writing and reading to the registers. (I know that not all registers are writeable…etc.) BUT all I get back on every register is 0xff…<br /> But according to the datasheet (p14) nearly all should be cleared. </p> <p>Can somebody please give me a hint what I'm doing wrong?!<br /> Thanks<br /> /Marcus</p> <p><code><br /> #define DEFAULT_CHIP_SELECT_PIN 10<br /> #define DEFAULT_SPI_PORT 1<br /> #define SPI_READ_MODE_FLAG 0x80</p> <p>#include "libmaple.h"<br /> #include "wirish.h"</p> <p>void write_register(uint8 address, uint8 data);<br /> uint8 read_register(uint8 address);</p> <p>boolean foo = false;</p> <p>HardwareSPI WiFly(DEFAULT_SPI_PORT);<br /> void setup() {</p> <p> WiFly.begin(SPI_9MHZ, MSBFIRST, 0);<br /> pinMode(DEFAULT_CHIP_SELECT_PIN, OUTPUT);</p> <p>}</p> <p>void loop() {<br /> if(SerialUSB.available() &amp;&amp; foo == false) {</p> <p> for(int i=0; i&lt;16; i++){<br /> SerialUSB.println("Writing to adress:");<br /> SerialUSB.println( byte(i) &lt;&lt; 3, BIN);<br /> write_register(byte(i) &lt;&lt; 3, 0x02);<br /> }<br /> delay(20);</p> <p> for(int i=0; i&lt;16; i++){<br /> SerialUSB.println("Reading from adress:");<br /> SerialUSB.println( byte(i) &lt;&lt; 3, BIN);<br /> SerialUSB.println( read_register(byte(i) &lt;&lt; 3) );</p> <p> }</p> <p> foo = true;<br /> }</p> <p>}</p> <p>void select(){<br /> digitalWrite(DEFAULT_CHIP_SELECT_PIN, LOW);<br /> }</p> <p>void deselect(){<br /> digitalWrite(DEFAULT_CHIP_SELECT_PIN, HIGH);<br /> }</p> <p>void write_register(uint8 address, uint8 data){</p> <p> select();<br /> WiFly.write(address);<br /> WiFly.write(data);</p> <p> deselect();</p> <p>}</p> <p>uint8 read_register(uint8 address){<br /> uint8 data;<br /> select();<br /> // see Chapter 11 in Datasheed<br /> WiFly.write(SPI_READ_MODE_FLAG | address);<br /> data = WiFly.read();<br /> deselect();<br /> return data;<br /> }<br /> </code> </p>