2018-05-13 11:39:08 +08:00
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## 将AWTK移植到STM32f103ze裸系统
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AWTK的可移植性很高，在移植时只需要实现平台初始化、lcd和mainloop三个方面的东西。本文以STM32f103ze为例介绍移植AWTK到新平台的过程。
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### 一、平台初始化
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2018-05-24 11:18:46 +08:00
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除了基本的libc函数外，AWTK对平台没有特别要求，在stm32f103ze上没有函数gettimeofday，所以要实现一个获取当前时间的函数get\_time\_ms。另外需要给GUI分配一块内存空间，并调用tk\_mem\_init。
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2018-05-13 11:39:08 +08:00
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```
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uint32_t get_time_ms() {
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return RTC_GetCounter();
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}
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void sleep_ms(uint32_t ms) { delay_ms(ms); }
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static uint32_t s_heam_mem[2048];
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ret_t platform_prepare(void) {
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timer_init(get_time_ms);
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2018-05-24 11:18:46 +08:00
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tk_mem_init(s_heam_mem, sizeof(s_heam_mem));
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2018-05-13 11:39:08 +08:00
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return RET_OK;
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}
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```
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> 参考：awtk-port/platform.c
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### 二、实现lcd
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lcd\_t接口提供基本的显示功能，AWTK提供基于寄存器和基于framebuffer两种缺省实现，在此基础上实现自己的lcd\_t接口非常方便。
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stm32f103ze使用基于寄存器的lcd的缺省实现，只需要提供set\_window\_func和write\_data\_func两个函数/宏即可。这里直接使用了TFT\_SetWindow和TFT\_WriteData两个函数。
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```
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#include "gui.h"
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#include "lcd_driver.h"
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#include "lcd/lcd_reg.h"
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#define set_window_func TFT_SetWindow
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#define write_data_func TFT_WriteData
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#include "base/color.h"
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#include "base/mem.h"
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#include "lcd/rgb565.h"
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#include "lcd/lcd_reg.inc"
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```
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> 参考 awtk-port/lcd\_stm32\_raw.c
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### 三、实现main\_loop
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main\_loop主要负责事件分发和绘制这个不断循环的过程。main\_loop\_raw.inc里实现了裸系统main\_loop的基本功能，在移植时加上输入事件的的分发即可：
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```
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static ret_t post_touch_events(main_loop_t* l, bool_t pressed, xy_t x, xy_t y);
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ret_t platform_disaptch_input(main_loop_t* l) {
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/*TODO：按键处理*/
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return RET_OK;
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}
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static lcd_t* platform_create_lcd(wh_t w, wh_t h) { return lcd_reg_create(w, h); }
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void TIM3_IRQHandler(void) {
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if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) {
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TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
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if (TOUCH_Scan() == 0) {
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post_touch_events(main_loop(), TRUE, TouchData.lcdx, TouchData.lcdy);
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} else {
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post_touch_events(main_loop(), FALSE, TouchData.lcdx, TouchData.lcdy);
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}
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}
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}
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#include "main_loop/main_loop_raw.inc"
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```
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> 参考 main\_loop/main\_loop\_stm32\_raw.c
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注：目前以[普中科技STM32F103ZET6开发实验板](https://item.taobao.com/item.htm?spm=a230r.1.14.1.50a130e8TMKYMC&id=558855281660&ns=1&abbucket=5#detail) 为载体移植，其它开发板应该差不多。
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2018-05-17 13:44:04 +08:00
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完整项目和源码请参考：[awtk-stm32f103ze-raw](https://github.com/zlgopen/awtk-stm32f103ze-raw)
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2018-05-13 11:39:08 +08:00
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