samples: boards: esp32: spiram test (adbf2192) · Commits · Wenxi XU / zephyr

samples/boards/esp32/spiram_test/README.rst

+9 −12

Original line number	Diff line number	Diff line
		@@ -6,13 +6,10 @@ Espressif ESP32 SPIRAM test
		Overview
		********

		This sample allocates memory from internal DRAM and SPIRAM by calling
		:c:func:`k_malloc`, frees allocated memory by calling :c:func:`k_free` and
		checks if memory can be allocated again. Capability of allocated memory is
		decided by ESP_HEAP_MIN_EXTRAM_THRESHOLD. If size is less than
		ESP_HEAP_MIN_EXTRAM_THRESHOLD, memory is allocated from internal DRAM. If
		size is greater than ESP_HEAP_MIN_EXTRAM_THRESHOLD, memory is allocated from
		SPIRAM.
		This sample shows how to allocate memory from SPIRAM by using
		:c:func:`shared_multi_heap_aligned_alloc` with `SMH_REG_ATTR_EXTERNAL` attribute. Checks if the
		memory was correctly allocated then frees it by calling :c:func:`shared_multi_heap_free`.
		It also allocates memory from internal memory and checks if the address range is correct.

		Supported SoCs
		**************
		@@ -21,6 +18,7 @@ The following SoCs are supported by this sample code so far:

		* ESP32
		* ESP32-S2
		* ESP32-S3

		Building and Running
		********************
		@@ -29,7 +27,7 @@ Make sure you have your board connected over USB port.

		.. code-block:: console

		west build -b esp32_devkitc_wrover samples/boards/esp32/spiram_test
		west build -b esp32s3_devkitm/esp32s3/procpu samples/boards/esp32/spiram_test
		west flash

		If using another supported Espressif board, replace the argument in the above
		@@ -49,7 +47,6 @@ port at ``/dev/ttyUSB0``:

		.. code-block:: console

		mem test ok! 209
		* Booting Zephyr OS build v3.7.0-446-g93c9da66944c *
		SPIRAM mem test pass
		mem test ok! 194
		Internal mem test pass

samples/boards/esp32/spiram_test/prj.conf

+0 −1

Original line number	Diff line number	Diff line
		CONFIG_ESP_SPIRAM=y
		CONFIG_ESP_HEAP_MIN_EXTRAM_THRESHOLD=2048
		CONFIG_HEAP_MEM_POOL_SIZE=98304
		CONFIG_ESP_HEAP_SEARCH_ALL_REGIONS=n

samples/boards/esp32/spiram_test/src/main.c

+12 −63

Original line number	Diff line number	Diff line
		@@ -7,81 +7,30 @@
		#include <zephyr/kernel.h>
		#include <zephyr/sys/printk.h>
		#include <soc/soc_memory_layout.h>

		static int check_allocated_memory(int *m1, size_t size)
		{
		int ret = 0;

		if (size < CONFIG_ESP_HEAP_MIN_EXTRAM_THRESHOLD) {
		if (!esp_ptr_internal(m1)) {
		printk("Memory allocation is not within"
		" specified bounds\n");
		ret = -1;
		}
		} else {
		if (!esp_ptr_external_ram(m1)) {
		printk("Memory allocation is not within"
		" specified bounds\n");
		ret = -1;
		}
		}
		return ret;
		}

		static int test_heap_caps(size_t size)
		{
		int m1, m2;
		int cnt = 0, err = 0;

		m2 = NULL;
		/* Allocated as much as we can, and create linked list */
		while ((m1 = k_malloc(size))) {
		if (check_allocated_memory(m1, size) == -1) {
		err = -1;
		goto ret;
		}
		(int *) m1 = m2;
		m2 = m1;
		cnt++;
		}

		/* Free all allocated memory */
		while (m2) {
		m1 = (int *) m2;
		k_free(m2);
		m2 = m1;
		}
		/* Confirm that allocation can succeed now */
		m1 = k_malloc(size);
		if (check_allocated_memory(m1, size) == -1) {
		err = -1;
		goto ret;
		}
		if (!m1) {
		err = -1;
		} else {
		k_free(m1);
		printk("mem test ok! %d\n", cnt);
		}
		ret:
		return err;
		}
		#include <zephyr/multi_heap/shared_multi_heap.h>

		int main(void)
		{
		int err = test_heap_caps(10001);
		int m_ext, m_int;

		m_ext = shared_multi_heap_aligned_alloc(SMH_REG_ATTR_EXTERNAL, 32, 4096);

		if (err == -1) {
		if (!esp_ptr_external_ram(m_ext)) {
		printk("SPIRAM mem test failed\n");
		} else {
		printk("SPIRAM mem test pass\n");
		}

		err = test_heap_caps(1001);
		if (err == -1) {
		shared_multi_heap_free(m_ext);

		m_int = k_malloc(4096);
		if (!esp_ptr_internal(m_int)) {
		printk("Internal mem test failed\n");
		} else {
		printk("Internal mem test pass\n");
		}

		k_free(m_int);

		return 0;
		}

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