Encoder causes esp32 to crash when using platformIO

[BrentRoberson]

Used the example code and it works fine with the Arduino IDE but as soon as I take the exact code the PlatformIO my esp32 crashes and gives an error on repeat.

Steps To Reproduce Problem

use the library in platformIO with the example given.

Hardware & Software

Using Esp32 Development kit, latest version of encoder library Here is my Platformio.ini: [env] build_src_filter = +<*> -<.git/> -<.svn/> - - - -

[env:dispenser] platform = espressif32 board = esp32doit-devkit-v1 framework = arduino lib_deps = miguelbalboa/MFRC522@^1.4.10 marcoschwartz/LiquidCrystal_I2C@^1.1.4 soligen2010/ClickEncoder@0.0.0-alpha+sha.9337a0c46c paulstoffregen/Encoder@^1.4.2 upload_port = COM8 monitor_port = COM8 monitor_speed = 115200 build_src_filter = ${env.src_filter} -

Errors or Incorrect Output

rst:0xc (SW_CPU_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:1184 load:0x40078000,len:13104 load:0x40080400,len:3036 entry 0x400805e4 E (166) gpio: esp_ipc_call_blocking failed (0x103) [ 6][E][esp32-hal-gpio.c:175] __attachInterruptFunctionalArg(): GPIO ISR Service Failed To Start E (169) gpio: gpio_install_isr_service(449): GPIO isr service already installed Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.

Core 0 register dump: PC : 0x400f7467 PS : 0x00060533 A0 : 0x800d6beb A1 : 0x3ffe3b30
A2 : 0x00000000 A3 : 0x3ffc2e60 A4 : 0x3ffc2e60 A5 : 0x00060523 A6 : 0x00060520 A7 : 0x00000001 A8 : 0x800d67a8 A9 : 0x3ffe3af0
A10 : 0x3ffbdc14 A11 : 0x00000010 A12 : 0x00000004 A13 : 0x3ffe3b30 A14 : 0x007bdc00 A15 : 0x003fffff SAR : 0x0000001c EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000 LBEG : 0x40086979 LEND : 0x40086989 LCOUNT : 0xfffffff7 Backtrace: 0x400f7464:0x3ffe3b30 0x400d6be8:0x3ffe3b50 0x400d4490:0x3ffe3b80 0x400d44dd:0x3ffe3bb0 0x400d1ed1:0x3ffe3bd0 0x400d25da:0x3ffe3bf0 0x400ddf1f:0x3ffe3c10 0x40082d71:0x3ffe3c40 0x400792ba:0x3ffe3c90 |<-CORRUPTED

[TadyTheFish]

same problem stack trace :

0x401059b0: esp_intr_get_cpu at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/esp_hw_support/intr_alloc.c line 703
0x400dc56c: gpio_isr_handler_add at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/driver/gpio.c line 473
0x400da7a8: __attachInterruptFunctionalArg at /home/linuxcnc/.platformio/packages/framework-arduinoespressif32/cores/esp32/esp32-hal-gpio.c line 192
0x400da7f5: __attachInterrupt at /home/linuxcnc/.platformio/packages/framework-arduinoespressif32/cores/esp32/esp32-hal-gpio.c line 208
0x400d8041: Encoder::attach_interrupt(unsigned char, Encoder_internal_state_t*) at .pio/libdeps/esp32/Encoder/Encoder.h line 474
0x400d817d: Encoder::Encoder(unsigned char, unsigned char) at .pio/libdeps/esp32/Encoder/Encoder.h line 97

[tko]

Comment on reddit suggests this is due to attaching to the interrupts in the constructor and it might work if it were done in setup() instead. Unfortunately that doesn't seem to be possible with the current code.

[ZephyrCloudNine]

Attaching the interrupt in void setup() is the way to go instead of at the constructor. Here's how i went about it given that the Encoder library requires you to pass the interrupt pins in the constructor itself. Heres an example code which worked for me (ESP32S dev module)

/* Encoder Library - Basic Example

• http://www.pjrc.com/teensy/td_libs_Encoder.html
• This example code is in the public domain. */

include

// Change these two numbers to the pins connected to your encoder. // Best Performance: both pins have interrupt capability // Good Performance: only the first pin has interrupt capability // Low Performance: neither pin has interrupt capability Encoder *myEnc; // avoid using pins with LEDs attached

void setup() {

myEnc = new Encoder(18,19); Serial.begin(115200); Serial.println("Basic Encoder Test:"); }

long oldPosition = -999;

void loop() { long newPosition = myEnc->read(); if (newPosition != oldPosition) { oldPosition = newPosition; Serial.println(newPosition); } }