esp-idf/components/newlib/test/test_shared_stack_printf.c

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#include <stdio.h>
#include "unity.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "sdkconfig.h"
#include "test_utils.h"
#include "esp_expression_with_stack.h"
//makes sure this is not the task stack...
void another_external_stack_function(void)
{
//We can even use Freertos resources inside of this context.
vTaskDelay(100);
printf("Executing this another printf inside a function with external stack");
}
TEST_CASE("test printf using shared buffer stack", "[newlib]")
{
portSTACK_TYPE *shared_stack = malloc(8192 * sizeof(portSTACK_TYPE));
TEST_ASSERT(shared_stack != NULL);
SemaphoreHandle_t printf_lock = xSemaphoreCreateMutex();
TEST_ASSERT_NOT_NULL(printf_lock);
ESP_EXECUTE_EXPRESSION_WITH_STACK(printf_lock, shared_stack,8192,printf("Executing this printf from external stack! \n"));
ESP_EXECUTE_EXPRESSION_WITH_STACK(printf_lock, shared_stack,8192,another_external_stack_function());
vSemaphoreDelete(printf_lock);
free(shared_stack);
}