http://forums.leaflabs.com/topic.php?id=1827 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:06:52 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1827#post-10965 Tue, 29 May 2012 12:00:46 +0000 x893 10965@http://forums.leaflabs.com/ <p>You need check your FreeRTOSConfig.h (in FreeRTOS\unitility folder)<br /> Default heap size = 8K byte, configMINIMAL_STACK_SIZE = 120 * 4 = ~ 500 bytes (so 500*16 &gt; 8K)<br /> You can set configUSE_MALLOC_FAILED_HOOK = 1 and vApplicationMallocFailedHook() to control memory allocation error.<br /> But better read FreeRTOS documentation. </p> http://forums.leaflabs.com/topic.php?id=1827#post-10964 Tue, 29 May 2012 10:49:48 +0000 Abo 10964@http://forums.leaflabs.com/ <p>Hello all,</p> <p>I got a problem with running FreeRTOS with RET6 Maple. I have a FreeRTOS program that requires more than 20K RAM. So I simply compile my code with RET6 flash option and upload. My program just wouldn't run even though I know I'm below the 64K limit of RET6. I then make a test case on FreeRTOS task to see the memory limitation:</p> <p>#include &lt;MapleFreeRTOS.h&gt;<br /> void setup()<br /> {<br /> xTaskCreate(vTask,<br /> (signed portCHAR *)"Task1",<br /> configMINIMAL_STACK_SIZE*15,<br /> NULL,<br /> tskIDLE_PRIORITY + 1,<br /> NULL);</p> <p> vTaskStartScheduler();<br /> }</p> <p>void loop()<br /> {<br /> }</p> <p>void vTask(void *pvParameters)<br /> {<br /> int i = 0;<br /> while(true)<br /> {<br /> i = i+1;<br /> if (i&gt;10)<br /> i = 0;<br /> SerialUSB.println(i);<br /> vTaskDelay(1000/portTICK_RATE_MS);<br /> }<br /> }</p> <p>I try to control the memory demand by configMINIMAL_STACK_SIZE*X, where X is the memory size of the Task used. When X = 15, the total RAM demand is less than 20K, and the program run smoothly. When I change X to 16, the program stopped running in both normal Maple and RET6.</p> <p>Q1) Is there FreeRTOS porting difference between normal Maple and RET6 Maple that can cause RAM limitations? Any parameters I need to change for RET6?</p> <p>Q2) Does the RET6 option in MapleIDE matters?</p> <p>I'm very pleased and excited about having a Maple port for FreeRTOS. Work nicely with all the cool features of RTOS~ so I really hope I can find out what went wrong with the 64K RAM... </p>