touchgfx 移植出现图片显示问题

发布于 2019-07-11 11:20:52 浏览：3951 订阅该版

IAR 工程。移植touchgfx ,1.注意时钟,2touchgfx必须先使能crc,修改oswrappers.cpp，内容在下面
出现 图片显示不全，如果使用cube生成的使用ffreertos没问题

#include <touchgfx/hal/OSWrappers.hpp>
#include "rtthread.h"
#include <touchgfx/hal/GPIO.hpp>
#include <touchgfx/hal/HAL.hpp>

using namespace touchgfx;

static struct rt_semaphore  frame_buffer_sem;
static rt_mailbox_t vsync_q;

// Just a dummy value to insert in the VSYNC queue.
static rt_ubase_t dummy = 0x5a;

void OSWrappers::initialize()
{
  rt_err_t err;
  err =  rt_sem_init(&frame_buffer_sem,"touchgfx", 1, RT_IPC_FLAG_FIFO);
  RT_ASSERT(err == RT_EOK);
  takeFrameBufferSemaphore();
  vsync_q =  rt_mb_create("touchgfx", 1,RT_IPC_FLAG_FIFO);
  RT_ASSERT(vsync_q);
}

void OSWrappers::takeFrameBufferSemaphore()
{
    rt_sem_take(&frame_buffer_sem, RT_WAITING_FOREVER);
}
void OSWrappers::giveFrameBufferSemaphore()
{
    rt_sem_release(&frame_buffer_sem);
}

void OSWrappers::tryTakeFrameBufferSemaphore()
{
    rt_sem_take(&frame_buffer_sem, RT_WAITING_NO);
}

void OSWrappers::giveFrameBufferSemaphoreFromISR()
{
    // Since this is called from an interrupt, FreeRTOS requires special handling to trigger a
    // re-scheduling. May be applicable for other OSes as well.
    giveFrameBufferSemaphore();
}

void OSWrappers::signalVSync()
{
    if (vsync_q)
    {
        // Since this is called from an interrupt, FreeRTOS requires special handling to trigger a
        // re-scheduling. May be applicable for other OSes as well.
        rt_mb_send(vsync_q,dummy);
    }
}

void OSWrappers::waitForVSync()
{
    // First make sure the queue is empty, by trying to remove an element with 0 timeout.
    rt_mb_recv(vsync_q,&dummy,RT_WAITING_NO);

// Then, wait for next VSYNC to occur.
    rt_mb_recv(vsync_q, &dummy,RT_WAITING_FOREVER);
}

void OSWrappers::taskDelay(uint16_t ms)
{
    rt_thread_mdelay(ms);
}

static int IdleTaskHook(void* p)
{
    if ((int)p) //idle task sched out
    {
        touchgfx::HAL::getInstance()->setMCUActive(true);
    }
    else //idle task sched in
    {
        touchgfx::HAL::getInstance()->setMCUActive(false);
    }
    return 1;
}

// FreeRTOS specific handlers
extern "C"
{
    void vApplicationIdleHook(void)
    {
        // Set task tag in order to have the "IdleTaskHook" function called when the idle task is
        // switched in/out. Used solely for measuring MCU load, and can be removed if MCU load
        // readout is not needed.
        //vTaskSetApplicationTaskTag(NULL, IdleTaskHook);
    }
}