<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[PlatformIO and FreeRTOS]]></title><description><![CDATA[<h3>A little help would go a long way!</h3>
<p dir="auto">I am trying to use FreeRTOS with PlatformIO on my M5Stack Core 2</p>
<p dir="auto">I can get it to work on cpu core 1 but not on cpu core 0. Any suggestions?</p>
<p dir="auto">I am suspicious that it has to do with SPI communication with the LCD screen. I am hoping I am doing something wrong. It is easier to fix my faults than those of TFT_eSPI or M5Display.</p>
<p dir="auto">Thanks in advance!</p>
<h3>Code snippet</h3>
<pre><code class="language-c++">xTaskCreatePinnedToCore(loop,"task1",8192,NULL,1,taskHandle,1); //Works

xTaskCreatePinnedToCore(loop,"task2",8192,NULL,1,taskHandle,0); // Sets CPU in panic and reboots

void loop(void *parameters) {
    while(1) {
        M5.Lcd.println("Somthing to think about!");
        Serial.println("Something to ponder?");
        delay(1000);
}
</code></pre>
<h3>Stacktrace</h3>
<p dir="auto">Backtrace: 0x4008a380:0x3ffbe4f0 0x4008a5f9:0x3ffbe510 0x400e73e7:0x3ffbe530 0x40086195:0x3ffbe550 0x400d29a9:0x3ffb5ce0 0x400d3941:0x3ffb5d00 0x400d3e15:0x3ffb5d80 0x400d33a9:0x3ffb5df0 0x400fba1b:0x3ffb5e20 0x400d6232:0x3ffb5e40 0x400d6311:0x3ffb5e60 0x400d5f4e:0x3ffb5e80 0x400d5e74:0x3ffb5fd0 0x4008b5fe:0x3ffb5ff0<br />
#0  0x4008a380:0x3ffbe4f0 in invoke_abort at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:715<br />
#1  0x4008a5f9:0x3ffbe510 in abort at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:715<br />
#2  0x400e73e7:0x3ffbe530 in task_wdt_isr at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp32/task_wdt.c:252<br />
#3  0x40086195:0x3ffbe550 in _xt_lowint1 at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/xtensa_vectors.S:1154<br />
#4  0x400d29a9:0x3ffb5ce0 in TFT_eSPI::setWindow(int, int, int, int) at .pio/libdeps/m5stack-core2/M5Core2/src/utility/In_eSPI.cpp:6120<br />
#5  0x400d3941:0x3ffb5d00 in TFT_eSPI::drawChar(int, int, unsigned short, unsigned int, unsigned int, unsigned char) at .pio/libdeps/m5stack-core2/M5Core2/src/utility/In_eSPI.cpp:6120<br />
#6  0x400d3e15:0x3ffb5d80 in TFT_eSPI::drawChar(unsigned short, int, int, unsigned char) at .pio/libdeps/m5stack-core2/M5Core2/src/utility/In_eSPI.cpp:6120<br />
#7  0x400d33a9:0x3ffb5df0 in TFT_eSPI::write(unsigned char) at .pio/libdeps/m5stack-core2/M5Core2/src/utility/In_eSPI.cpp:6120<br />
#8  0x400fba1b:0x3ffb5e20 in Print::write(unsigned char const*, unsigned int) at /Users/noname/.platformio/packages/framework-arduinoespressif32/cores/esp32/Print.cpp:42<br />
#9  0x400d6232:0x3ffb5e40 in Print::write(char const*) at /Users/noname/.platformio/packages/framework-arduinoespressif32/cores/esp32/Print.cpp:261<br />
#10 0x400d6311:0x3ffb5e60 in Print::print(char const*) at /Users/noname/.platformio/packages/framework-arduinoespressif32/cores/esp32/Print.cpp:261<br />
(inlined by) Print::println(char const*) at /Users/noname/.platformio/packages/framework-arduinoespressif32/cores/esp32/Print.cpp:195<br />
#11 0x400d5f4e:0x3ffb5e80 in M5OS::ScreenClass::println(char const*, ...) at lib/M5OS/src/Screen.cpp:31<br />
#12 0x400d5e74:0x3ffb5fd0 in loop(void*) at main.cpp:10 (discriminator 1)<br />
#13 0x4008b5fe:0x3ffb5ff0 in vPortTaskWrapper at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)</p>
]]></description><link>https://community.m5stack.com/topic/3795/platformio-and-freertos</link><generator>RSS for Node</generator><lastBuildDate>Fri, 15 May 2026 07:08:57 GMT</lastBuildDate><atom:link href="https://community.m5stack.com/topic/3795.rss" rel="self" type="application/rss+xml"/><pubDate>Thu, 02 Dec 2021 22:15:41 GMT</pubDate><ttl>60</ttl></channel></rss>