esp-idf/components/ulp/test/ulp_riscv/test_ulp_riscv_main.c

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/*
* SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <string.h>
#include "esp_sleep.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/sens_reg.h"
#include "soc/rtc_periph.h"
#include "ulp_riscv.h"
#include "ulp_test_app.h"
#include "unity.h"
#include <sys/time.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
typedef enum{
RISCV_READ_WRITE_TEST = 1,
RISCV_DEEP_SLEEP_WAKEUP_TEST,
RISCV_LIGHT_SLEEP_WAKEUP_TEST,
RISCV_STOP_TEST,
RISCV_NO_COMMAND,
} riscv_test_commands_t;
typedef enum {
RISCV_COMMAND_OK = 1,
RISCV_COMMAND_NOK,
RISCV_COMMAND_INVALID,
} riscv_test_command_reply_t;
#define XOR_MASK 0xDEADBEEF
#define ULP_WAKEUP_PERIOD 1000000 // 1 second
extern const uint8_t ulp_main_bin_start[] asm("_binary_ulp_test_app_bin_start");
extern const uint8_t ulp_main_bin_end[] asm("_binary_ulp_test_app_bin_end");
static bool firmware_loaded = false;
static void load_and_start_ulp_firmware(void)
{
if (!firmware_loaded) {
TEST_ASSERT(ulp_riscv_load_binary(ulp_main_bin_start,
(ulp_main_bin_end - ulp_main_bin_start)) == ESP_OK);
TEST_ASSERT(ulp_set_wakeup_period(0, ULP_WAKEUP_PERIOD) == ESP_OK);
TEST_ASSERT(ulp_riscv_run() == ESP_OK);
firmware_loaded = true;
}
}
TEST_CASE("ULP-RISC-V and main CPU are able to exchange data", "[ulp]")
{
const uint32_t test_data = 0x12345678;
struct timeval start, end;
/* Load ULP RISC-V firmware and start the ULP RISC-V Coprocessor */
load_and_start_ulp_firmware();
/* Setup wakeup triggers */
TEST_ASSERT(esp_sleep_enable_ulp_wakeup() == ESP_OK);
/* Setup test data */
ulp_riscv_test_data_in = test_data ^ XOR_MASK;
ulp_main_cpu_command = RISCV_READ_WRITE_TEST;
/* Enter Light Sleep */
TEST_ASSERT(esp_light_sleep_start() == ESP_OK);
/* Wait for wakeup from ULP RISC-V Coprocessor */
TEST_ASSERT(esp_sleep_get_wakeup_cause() == ESP_SLEEP_WAKEUP_ULP);
/* Wait till we receive the correct command response */
gettimeofday(&start, NULL);
while (ulp_command_resp != RISCV_READ_WRITE_TEST)
;
gettimeofday(&end, NULL);
printf("Response time %jd ms\n", ((intmax_t)end.tv_sec - (intmax_t)start.tv_sec) * 1000 + (end.tv_usec - start.tv_usec) / 1000);
/* Verify test data */
TEST_ASSERT(ulp_command_resp == RISCV_READ_WRITE_TEST);
TEST_ASSERT(ulp_main_cpu_reply == RISCV_COMMAND_OK);
printf("data out: 0x%X, expected: 0x%X \n", ulp_riscv_test_data_out, test_data);
TEST_ASSERT(test_data == ulp_riscv_test_data_out);
/* Clear test data */
ulp_main_cpu_command = RISCV_NO_COMMAND;
}
TEST_CASE("ULP-RISC-V is able to wakeup main CPU from light sleep", "[ulp]")
{
struct timeval start, end;
/* Load ULP RISC-V firmware and start the ULP RISC-V Coprocessor */
load_and_start_ulp_firmware();
/* Setup wakeup triggers */
TEST_ASSERT(esp_sleep_enable_ulp_wakeup() == ESP_OK);
/* Setup test data */
ulp_main_cpu_command = RISCV_LIGHT_SLEEP_WAKEUP_TEST;
/* Enter Light Sleep */
TEST_ASSERT(esp_light_sleep_start() == ESP_OK);
/* Wait for wakeup from ULP RISC-V Coprocessor */
TEST_ASSERT(esp_sleep_get_wakeup_cause() == ESP_SLEEP_WAKEUP_ULP);
/* Wait till we receive the correct command response */
gettimeofday(&start, NULL);
while (ulp_command_resp != RISCV_LIGHT_SLEEP_WAKEUP_TEST)
;
gettimeofday(&end, NULL);
printf("Response time %jd ms\n", ((intmax_t)end.tv_sec - (intmax_t)start.tv_sec) * 1000 + (end.tv_usec - start.tv_usec) / 1000);
/* Verify test data */
TEST_ASSERT(ulp_command_resp == RISCV_LIGHT_SLEEP_WAKEUP_TEST);
TEST_ASSERT(ulp_main_cpu_reply == RISCV_COMMAND_OK);
/* Clear test data */
ulp_main_cpu_command = RISCV_NO_COMMAND;
}
static bool ulp_riscv_is_running(void)
{
uint32_t start_cnt = ulp_riscv_counter;
/* Wait a few ULP wakeup cycles to ensure ULP has run */
vTaskDelay((5 * ULP_WAKEUP_PERIOD / 1000) / portTICK_PERIOD_MS);
uint32_t end_cnt = ulp_riscv_counter;
printf("start run count: %d, end run count %d\n", start_cnt, end_cnt);
/* If the ulp is running the counter should have been incremented */
return (start_cnt != end_cnt);
}
TEST_CASE("ULP-RISC-V can be stopped and resumed from main CPU", "[ulp]")
{
/* Load ULP RISC-V firmware and start the ULP RISC-V Coprocessor */
load_and_start_ulp_firmware();
TEST_ASSERT(ulp_riscv_is_running());
printf("Stopping the ULP\n");
ulp_riscv_timer_stop();
ulp_riscv_halt();
TEST_ASSERT(!ulp_riscv_is_running());
printf("Resuming the ULP\n");
ulp_riscv_timer_resume();
TEST_ASSERT(ulp_riscv_is_running());
}
TEST_CASE("ULP-RISC-V can stop itself and be resumed from the main CPU", "[ulp]")
{
volatile riscv_test_commands_t *command_resp = &ulp_command_resp;
/* Load ULP RISC-V firmware and start the ULP RISC-V Coprocessor */
load_and_start_ulp_firmware();
TEST_ASSERT(ulp_riscv_is_running());
printf("Stopping the ULP\n");
/* Setup test data */
ulp_main_cpu_command = RISCV_STOP_TEST;
while (*command_resp != RISCV_STOP_TEST) {
}
/* Wait a bit to ensure ULP finished shutting down */
vTaskDelay(100 / portTICK_PERIOD_MS);
TEST_ASSERT(!ulp_riscv_is_running());
printf("Resuming the ULP\n");
ulp_main_cpu_command = RISCV_NO_COMMAND;
ulp_riscv_timer_resume();
TEST_ASSERT(ulp_riscv_is_running());
}
/*
* Keep this test case as the last test case in this suite as a CPU reset occurs.
* Add new test cases above in order to ensure they run when all test cases are run together.
*/
TEST_CASE("ULP-RISC-V is able to wakeup main CPU from deep sleep", "[ulp][reset=SW_CPU_RESET][ignore]")
{
/* Load ULP RISC-V firmware and start the ULP RISC-V Coprocessor */
load_and_start_ulp_firmware();
/* Setup wakeup triggers */
TEST_ASSERT(esp_sleep_enable_ulp_wakeup() == ESP_OK);
/* Setup test data */
ulp_main_cpu_command = RISCV_DEEP_SLEEP_WAKEUP_TEST;
/* Enter Deep Sleep */
esp_deep_sleep_start();
UNITY_TEST_FAIL(__LINE__, "Should not get here!");
}