大家好,我是极智视界,本文介绍了全志 XR806 say hello world 实现。
咱们之前已经完成了 XR806 鸿蒙系统的固件编译和固件烧录,得到的终端输出类似这样:
这里进入下一阶段,先让 XR806 板子来一下 blink、blink,以示准备就绪。
在串口调试命令终端输入如下指令:
hm iot pwm init p=2 hm iot pwm start p=2 d=50 f=5
看板子的灯 blink~blink~blink~
接下来开始实现 hello world。
需要重新走一遍固件编译与固件烧录,打开 <xr806_openharmony_path>/device/xradio/xr806/BUILD.gn,配置为启用 deps += "ohosdemo:ohosdemo",如下:
# device/xradio/xr806/BUILD.gn import("//build/lite/config/subsystem/lite_subsystem.gni") import("//build/lite/config/component/lite_component.gni") import("//base/security/huks/build/config.gni") build_ext_component("libSDK") { exec_path = rebase_path(".", root_build_dir) outdir = rebase_path("$root_out_dir") command = "./build.sh ${outdir}" deps = [ "//build/lite/:ohos", "//kernel/liteos_m:kernel", "os:liteos_glue", ] if (IsBootloader == "false") { deps += [ "adapter/hals:adapter", "adapter/console:app_console", "ohosdemo:ohosdemo" # 启用 ohosdemo ] } if (disable_huks_binary == true) { deps += [ "//base/security/huks/frameworks/huks_lite:huks_sdk", ] } } group("xr806") { }
循着指示到 <xr806_openharmony_path>/device/xradio/xr806/ohosdemo/BUILD.gn,启用 deps = "hello_demo:app_hello",如下:
# device/xradio/xr806/ohosdemo/BUILD.gn group("ohosdemo") { deps = [ "hello_demo:app_hello", #"iot_peripheral:app_peripheral", #"wlan_demo:app_WlanTest", ] }
到这里配置就可以了,为了更加深入一些,咱们继续看,<xr806_openharmony_path>/device/xradio/xr806/ohosdemo 目录结构如下:
- |-- hello_demo | |-- src | |-- main.c | |-- BUILD.gn |-- iot_peripheral | |-- ... |-- wlan_demo | |-- ... |-- BUILD.gn
来看一下 hello_demo 文件夹下的 BUILD.gn:
# device/xradio/xr806/ohosdemo/hello_demo/BUILD.gn import("//device/xradio/xr806/liteos_m/config.gni") static_library("app_hello") { # 这里就很容易看懂 "hello_demo:app_hello" configs = [] sources = [ "src/main.c", ] cflags = board_cflags include_dirs = board_include_dirs include_dirs += [ "//kernel/liteos_m/kernel/arch/include", ] }
最后的实现在 src/main.c,代码很简单:
#include <stdio.h> #include "ohos_init.h" #include "kernel/os/os.h" static OS_Thread_t g_main_thread; static void MainThread(void *arg){ /// 每秒打印 hello world while (1) { printf("hello world!\n"); LOS_Msleep(1000);} } void HelloTestMain(void){ printf("Wifi Test Start\n"); if (OS_ThreadCreate(&g_main_thread, "MainThread", MainThread, NULL, OS_THREAD_PRIO_APP, 4 * 1024) != OS_OK) { printf("[ERR] Create MainThread Failed\n");} } SYS_RUN(HelloTestMain);
以上就是 XR806 say hello world 的整个逻辑,下面要做的就是重新走一遍固件编译和烧录,然后终端展示:
[注]
解决终端输出偏移问题,类似:
对于 Xshell 和 MobaXterm 分别提供解决方法。
- Xshell:
work 了:
- MobaXterm:
(1) Setting->Configuration->Terminal->Terminal features 取消 "Paste using right-click":
(2) 右击终端选择 "Change Terminal Settings",然后勾选 "Implicit CR in every LF":
这样就 work 了:
以上分享了全志 XR806 板子 say hello 的过程,希望我的分享能对你的学习有一点帮助。