AWTK 在騰訊 TOS 上的移植筆記

AWTK 在騰訊 TOS 上的移植筆記

本文以 STM32f103ze 為例，介紹了 AWTK 在 RTOS 上移植的經驗。與其說移植，倒不如說是內建。因為 RTOS 通常沒有提供标準的 LCD 驅動接口，顯示部分并不需要特别的改動。所做的事情不過是把 AWTK 放到 RTOS 的一個線程中執行而已。

1. 加入 TOS 相關檔案。

AWTK 已經移植到 STM32f103ze 裸系統上，為了簡單起見，直接在 awtk-stm32f103ze-raw 基礎上加入 TOS 支援。

• 在 Keil 中增加下列檔案：

TencentOS/kernel/core/tos_event.c
TencentOS/kernel/core/tos_fifo.c
TencentOS/kernel/core/tos_global.c
TencentOS/kernel/core/tos_mmblk.c
TencentOS/kernel/core/tos_mmheap.c
TencentOS/kernel/core/tos_msg.c
TencentOS/kernel/core/tos_mutex.c
TencentOS/kernel/core/tos_pend.c
TencentOS/kernel/core/tos_queue.c
TencentOS/kernel/core/tos_robin.c
TencentOS/kernel/core/tos_sched.c
TencentOS/kernel/core/tos_sem.c
TencentOS/kernel/core/tos_sys.c
TencentOS/kernel/core/tos_task.c
TencentOS/kernel/core/tos_tick.c
TencentOS/kernel/core/tos_time.c
TencentOS/kernel/core/tos_timer.c
TencentOS/kernel/pm/tos_pm.c
TencentOS/kernel/pm/tos_tickless.c
TencentOS/arch/arm/arm-v7m/common/tos_cpu.c
TencentOS/arch/arm/arm-v7m/common/tos_fault.c
TencentOS/arch/arm/arm-v7m/cortex-m3/armcc/port_c.c
TencentOS/arch/arm/arm-v7m/cortex-m3/armcc/port_s.S
           

• 增加 include 的路徑

TencentOS/arch/arm/arm-v7m/common/include
TencentOS/arch/arm/arm-v7m/cortex-m3/armcc
TencentOS/kernel/core/include
TencentOS/kernel/hal/include
TencentOS/kernel/pm/include
TencentOS/TOS-CONFIG
           

• 修改配置檔案

根據自己的需要修改配置 TencentOS/TOS-CONFIG/tos_config.h：

一般來說不需要修改，使用官方提供的即可。我用的是 TencentOS-Demo 項目中的。

2. 加入針對 TOS 實作的線程和同步的函數。

src/platforms/tos/mutex.c
src/platforms/tos/semaphore.c
src/platforms/tos/thread.c
src/platforms/common/sys_tick.c
           

3. 實作 rtos.c

主要就是 SysTick 中斷的實作，從 TencentOS-Demo 中拷貝過來就行了。

ret_t rtos_init(void) {
  tos_knl_init();
  tos_robin_config(TOS_ROBIN_STATE_ENABLED, (k_timeslice_t)500u);

  return RET_OK;
}

ret_t rtos_start(void) {
  tos_knl_start();

  return RET_OK;
}

void rtos_tick(void) {
  if (tos_knl_is_running()) {
    tos_knl_irq_enter();
    tos_tick_handler();
    tos_knl_irq_leave();
  }
}

void rtos_delay(uint32_t ms) {
  tos_task_delay(ms);
}
           

4. 線上程中啟動 AWTK

void* awtk_thread(void* args) {
  gui_app_start(320, 480);

  return NULL;
}

static ret_t awtk_start_ui_thread(void) {
  tk_thread_t* ui_thread = tk_thread_create(awtk_thread, NULL);
  return_value_if_fail(ui_thread != NULL, RET_BAD_PARAMS);

  tk_thread_set_priority(ui_thread, 3);
  tk_thread_set_name(ui_thread, "awtk");
  tk_thread_set_stack_size(ui_thread, 2048);

  return tk_thread_start(ui_thread);
}

int main() {
  hardware_prepare();
  platform_prepare();

  rtos_init();
  awtk_start_ui_thread();
  rtos_start();
	
	return 0;
}
           

• 1. 線上程中啟動 AWTK。
• 1. 要提前調用 platform_prepare，platform_prepare 負責初始化記憶體，放在 tk_init 中就有些晚，需要單獨提出來調用。

static bool_t s_inited = FALSE;
static uint32_t s_heam_mem[4096];

ret_t platform_prepare(void) {
	if(!s_inited) {
		s_inited = TRUE;
    tk_mem_init(s_heam_mem, sizeof(s_heam_mem));
	}
  return RET_OK;
}