I'm using a ESP32 microcontroller to run a FreeRTOS simple program of printing what is in a global variable to the serial monitor. I'm also using the Arduino IDE.
Here's the simulator that I'm using and my specific project: https://wokwi.com/projects/403426133978368001
For some reason I'm getting an error of a program that is this basic.
Here is my code:
#if CONFIG_FREERTOS_UNICORE //this will return false (reading from config in freertos.h file), so we’ll set it to run on the second core app_cpu=1
static const BaseType_t app_cpu = 0;
#else
static const BaseType_t app_cpu = 1;
#endif
//global variable
char buffer[] = "Mary had a little lamb";
//task1
void Task1_Function( void *params)
{
uint8_t i = 0;
uint8_t msg_len = strlen(buffer);
//read (print) whatever is in the buffer
Serial.print("Task1: ");
for(int i; i < msg_len; i++)
{
Serial.print(buffer[i]);
}
Serial.println();
vTaskDelay(1000 / portTICK_PERIOD_MS);
}
//task2
//void Task1_Function( void *params)
//{
//}
void setup()
{
//Initialize Serial monitor
Serial.begin(9600);
BaseType_t status;
TaskHandle_t task1_handler, task2_handler;
//Task 1 Creation
status = xTaskCreatePinnedToCore(Task1_Function,
"Task-1-Function",
1024, //This is stack size in words, in bytes for a 32bit miccrocontroller each word is 4 bytes. so 500*4 = 20000 bytes
NULL, //no parameters passed
1, //priority
&task1_handler,
app_cpu
);
//check if task creation, memory allocation was sucessfull
if (status != pdTRUE)
{
Serial.println("Error Task1 creation failed"); //using Arduino IDE
}
//Or you can use the assert
//configASSERT(status == pdTRUE);
}
void loop()
{
// put your main code here, to run repeatedly:
}
I'm getting the following error:
rst:0x1 (POWERON_RESET),boot:0x13 (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:1156
load:0x40078000,len:11456
ho 0 tail 12 room 4
load:0x40080400,len:2972
entry 0x400805dc
Task1: Mary had a little lamb
Guru Meditation Error: Core 1 panic'ed (IllegalInstruction). Exception was unhandled.
Memory dump at 0x400d1428: 4ce5e8a3 00f01db8 b2808430
Core 1 register dump:
PC : 0x400d142d PS : 0x00060b30 A0 : 0x00000000 A1 : 0x3ffb8d10
A2 : 0x3ffc1058 A3 : 0x00000016 A4 : 0x3ffbdb60 A5 : 0x00000016
A6 : 0x00000000 A7 : 0x00000000 A8 : 0x800d142d A9 :
Any help is greatly appreciated
The problem is that your task is simply returning. That's not allowed. Most tasks are expected to live forever. If you have a task with a limited lifetime, then you have to call vTaskDelete(NULL) to allow the operating system to clean up its internal tables.