Issues with updated 'develop' branch

[loboris]

Make sure you read and understand this document.
Use one of the two templates below and delete the rest.

• BUG REPORT

---

Expected behavior

Expected to build and run without issues.

Actual behavior

Does not build.
Does not run with two processors.

Test code

#include <stdio.h>
#include <string.h>
#include <FreeRTOS.h>
#include <task.h>
#include <semphr.h>

static TaskHandle_t test_handle0 = 0;
static TaskHandle_t test_handle1 = 0;
static SemaphoreHandle_t test_task_mutex = NULL;

//---------------------------------------
static void test_task0(void *pvParameter)
{
    uint64_t n = 0, ticks;
    while (1) {
        vTaskDelay(1000 / portTICK_PERIOD_MS);
        n++;
        ticks = xTaskGetTickCount();
        if (xSemaphoreTake( test_task_mutex, 100) == pdTRUE ) {
            printf("Task at 0: %lu, %lu\n", n, ticks);
            xSemaphoreGive(test_task_mutex);
        }
    }
    vTaskDelete(NULL);
}

//----------------------------------------
static void test_task1(void *pvParameter)
{
    uint64_t n = 0, ticks;
    while (1) {
        vTaskDelay(1000 / portTICK_PERIOD_MS);
        n++;
        ticks = xTaskGetTickCount();
        if (xSemaphoreTake( test_task_mutex, 100) == pdTRUE ) {
            printf("Task at 1: %lu, %lu\n", n, ticks);
            xSemaphoreGive(test_task_mutex);
        }
    }
    vTaskDelete(NULL);
}

//------------
int main(void)
{
    printf("TEST\n");

    test_task_mutex = xSemaphoreCreateMutex();
    configASSERT(test_task_mutex);

    xTaskCreateAtProcessor(
            0,                          // processor
            test_task0,                 // function entry
            "TASK0",                    // task name
            configMINIMAL_STACK_SIZE,   // stack_deepth
            NULL,                       // function argument
            1,                          // task priority
            &test_handle0);             // task handle
    configASSERT(test_handle0);

    vTaskDelay(500 / portTICK_PERIOD_MS);
    xTaskCreateAtProcessor(
            1,                           // processor
            test_task1,                  // function entry
            "TASK1",                     // task name
            configMINIMAL_STACK_SIZE,    // stack_deepth
            NULL,                        // function argument
            1,                           // task priority
            &test_handle1);              // task handle
    configASSERT(test_handle1);

    while (1) {
        vTaskDelay(200);
    }
}

Document version

develop, 8f14b9d

Hardware

Sipeed MAIX-Bit, Dan-Dock

System

Ubuntu 18.04

---

During build, an error is reported:

-- Configuring done
-- Generating done
-- Build files have been written to: /home/LoBo2_Razno/MAIX/TEST/freertos-test/build
Scanning dependencies of target lwipcore
[  1%] Building C object third_party/lwip/CMakeFiles/lwipcore.dir/src/core/init.c.obj
cc1: error: requested ABI requires -march to subsume the 'D' extension
third_party/lwip/CMakeFiles/lwipcore.dir/build.make:62: recipe for target 'third_party/lwip/CMakeFiles/lwipcore.dir/src/core/init.c.obj' failed
make[2]: *** [third_party/lwip/CMakeFiles/lwipcore.dir/src/core/init.c.obj] Error 1
CMakeFiles/Makefile2:520: recipe for target 'third_party/lwip/CMakeFiles/lwipcore.dir/all' failed
make[1]: *** [third_party/lwip/CMakeFiles/lwipcore.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

This can be solved by changing the line in cmake/compile-flags.cmake to -march=rv64imafdc

---

When successfully compiled, only the task on processor 0 is running:

TEST
Task at 0: 1, 101
Task at 0: 2, 201
Task at 0: 3, 301
Task at 0: 4, 401
Task at 0: 5, 501
Task at 0: 6, 601
Task at 0: 7, 701
Task at 0: 8, 801
Task at 0: 9, 901
Task at 0: 10, 1001
Task at 0: 11, 1101

If compiled with master branch, tasks on both processors are running:

TEST
Task at 0: 1, 100
Task at 1: 1, 150
Task at 0: 2, 200
Task at 1: 2, 250
Task at 0: 3, 300
Task at 1: 3, 350
Task at 0: 4, 400
Task at 1: 4, 450
Task at 0: 5, 500
Task at 1: 5, 550
Task at 0: 6, 600
Task at 1: 6, 650
Task at 0: 7, 700
Task at 1: 7, 750
Task at 0: 8, 800
Task at 1: 8, 850
Task at 0: 9, 900
Task at 1: 9, 950
Task at 0: 10, 1000
Task at 1: 10, 1050
Task at 0: 11, 1100
Task at 1: 11, 1150

[loboris]

If this line in 'os_entry.c' is uncommented, the application freezes on start, unless a small delay is added at the beginning of the main() (vTaskDelay(10 / portTICK_PERIOD_MS);).
Still, only the task on processor 0 is running.

[sunnycase]

Should be fixed in e4bd4cc. Additionally you need to use the latest toolchain with the SDK in develop branch.

[loboris]

Thanks, it works now.

What about the error in lwipcore requiring D extension?
cc1: error: requested ABI requires -march to subsume the 'D' extension

Scanning dependencies of target lwipcore
[  1%] Building C object third_party/lwip/CMakeFiles/lwipcore.dir/src/core/init.c.obj
cc1: error: requested ABI requires -march to subsume the 'D' extension
third_party/lwip/CMakeFiles/lwipcore.dir/build.make:62: recipe for target 'third_party/lwip/CMakeFiles/lwipcore.dir/src/core/init.c.obj' failed

Is it ok to change -march=rv64imafc to -march=rv64imafdc in cmake/compile-flags.cmake ?
It works but I'm not shure if there is any consequence.

I'm using the latest toolchain https://github.com/kendryte/kendryte-gnu-toolchain/releases/tag/v8.2.0-20190221

[sunnycase]

You need to use https://github.com/kendryte/kendryte-gnu-toolchain/releases/tag/v8.2.0-20190213

[loboris]

Thank you, all works with that toolchain version.