http://forums.leaflabs.com/topic.php?id=9199 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:20:01 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=9199#post-20299 Mon, 15 Oct 2012 17:51:10 +0000 Mars Saxman 20299@http://forums.leaflabs.com/ <p>I posted some time ago about reusing a Maple board's JTAG pins as GPIOs. This is proving to be very frustrating. I can't get the Maple IDE to let me use any of the utilities defined in libmaple.</p> <p>I want to do this:<br /> afio_remap(AFIO_MAPR_SWJ_CFG_NO_JTAG_NO_SW);</p> <p>afio_remap() is defined in libmaple/stm32f1/include/series/gpio.h. Trying to include that directory leads to the following stupid guessing game:</p> <p>fatal error: libmaple/stm32f1/include/series/gpio.h: No such file or directorycompilation terminated.<br /> fatal error: stm32f1/include/series/gpio.h: No such file or directorycompilation terminated.<br /> fatal error: include/series/gpio.h: No such file or directorycompilation terminated.<br /> fatal error: series/gpio.h: No such file or directorycompilation terminated.</p> <p>Not really clear how to find the gpio.h which defines afio_remap. Unfortunately for me, there is a second gpio.h which *is* on the include path, and when I #include "gpio.h" I get several dozen repetitions of this error:</p> <p>/Applications/MapleIDE.app/Contents/Resources/Java/hardware/leaflabs/cores/maple/gpio.h:82: error: 'uint32' does not name a type</p> <p>For some reason gpio.h does not include all the headers it needs, so I have to #include &lt;util.h&gt; and &lt;libmaple_types.h&gt; in order to make it compile; but that still doesn't solve my problem, because neither AFIO_MAPR_SWJ_CFG_NO_JTAG_NO_SW nor afio_remap() are defined in this version of gpio.h.</p> <p>Time for some brutal kludgery. I copy all the definitions I need out of the correct version of gpio.h and paste them into my maple sketch, hoping that the linker will sort it out. No such luck:</p> <p>undefined reference to `afio_remap(afio_remap_peripheral)'collect2: ld returned 1 exit status</p> <p>This is really frustrating. How is this *supposed* to work? Is there documentation *anywhere* of the include path? </p> <p>I'd just ditch the whole Maple IDE thing and try to build my project on the command line, but I have never had any luck getting dfu-util to work, and on this project I can't just use the serial bootloader.</p> <p>-----</p> <p>Right. I was running an old version of the Maple IDE (0.0.9). Upgrading to 0.0.12 solved the problem, afio_remap did its job, and I have control over the JTAG pins within the Maple IDE system. All good. On to the next thing. </p>