簡介

在上兩篇文章中， 我們實(shí)現(xiàn)了GPIO輸出， 和PWM輸出(組件介紹在前文中已經(jīng)介紹過），在本章節(jié)我們將繼續(xù)進(jìn)行使用語音指令控制串口輸出。

配置Example默認(rèn)串口數(shù)據(jù)輸出

1、首先修改

/home/vc02/Downloads/uni_hb_m_solution/unione_lite_app_hb_m/user/inc/user_config.h

中的USER_RUN_DEMO_SELECT為USER_DEMO_UART

這樣默認(rèn)運(yùn)行的程序就是

/home/vc02/Downloads/uni_hb_m_solution/unione_lite_app_hb_m/user/src/examples/hb_uart.c

代碼如下所示

#include"user_uart.h"
#include"user_event.h"
#include"user_player.h"
#include"user_config.h"
#defineTAG"hb_uart_voice"
staticuni_pthread_tg_uart_thread_id =0;
staticboolg_uart_thread_running =false;
// 串口發(fā)送線程函數(shù)
staticvoid_uart_send_task(void*args) {
charbuf[6] = {1,2,3,4,5,6};
intret;
 g_uart_thread_running =true;
while(g_uart_thread_running) {
 LOGT(TAG,"UART send done, ret=%d", ret);
 uni_msleep(2000);// 每隔2秒發(fā)送一次
 }
}
// 創(chuàng)建發(fā)送線程
staticResult _create_uart_thread(void) {
if(g_uart_thread_running) {
 returnE_OK;
 }
 thread_param param;
uni_memset(¶m,0,sizeof(param));
 param.stack_size = STACK_SMALL_SIZE;
 param.priority = OS_PRIORITY_LOW;
uni_strncpy(param.task_name,"uart_voice",sizeof(param.task_name) -1);
if(0!=uni_pthread_create(&g_uart_thread_id, ¶m, _uart_send_task,NULL)) {
 returnE_FAILED;
 }
uni_pthread_detach(g_uart_thread_id); // 自動資源回收
returnE_OK;
}
// 停止發(fā)送線程
staticvoid_stop_uart_thread(void) {
if(!g_uart_thread_running)return;
 g_uart_thread_running =false;
if(g_uart_thread_id !=0) {
 uni_pthread_destroy(g_uart_thread_id);
  g_uart_thread_id =0;
 }
}
// 語音喚醒命令回調(diào)
staticvoid_on_wakeup_cmd_cb(USER_EVENT_TYPE event,user_event_context_t*context) {
if(context ==NULL)return;
event_goto_awakend_t*awake = &context->goto_awakend;
if(strcmp(awake->cmd,"wakeup_uni") ==0) {
  _create_uart_thread(); // 啟動串口線程
 user_player_reply_list_random(awake->reply_files); // 播放語音回復(fù)
 }
}
// 自定義設(shè)置命令回調(diào)
staticvoid_custom_setting_cb(USER_EVENT_TYPE event,user_event_context_t*context) {
if(context ==NULL)return;
event_custom_setting_t*setting = &context->custom_setting;
if(strcmp(setting->cmd,"TurnOn") ==0) {
  _stop_uart_thread(); // 停止串口線程
 user_player_reply_list_random(setting->reply_files); // 播放語音回復(fù)
 }
}
// 注冊語音事件回調(diào)
staticvoid_register_event_callback(void) {
user_event_subscribe_event(USER_GOTO_AWAKENED, _on_wakeup_cmd_cb);
user_event_subscribe_event(USER_CUSTOM_SETTING, _custom_setting_cb);
}
// 主入口
inthb_user_uart_voice_control(void){
if(0!=user_uart_init(NULL)) {
 LOGE(TAG,"UART init failed");
 return-1;
 }
 _register_event_callback();
return0;
}

其默認(rèn)行為為創(chuàng)建線程定時發(fā)送數(shù)據(jù)， 然后使用LOG打印。但是它沒辦法調(diào)試。 因此我們做一點(diǎn)簡單的修改， 當(dāng)接受的數(shù)據(jù)的時候再發(fā)送出去。

// 串口發(fā)送線程函數(shù)
staticvoid_uart_send_task(void*args) {
charbuf[6] = {1,2,3,4,5,6};
intret;
 g_uart_thread_running =true;
while(g_uart_thread_running) {
  LOGT(TAG,"Voice triggered UART send [1, 2, 3, 4, 5, 6]");
  ret = user_uart_send(buf,sizeof(buf));
  LOGT(TAG,"UART send done, ret=%d", ret);
  uni_msleep(2000);// 每隔2秒發(fā)送一次
 }
}

2、編譯和燒錄

實(shí)驗(yàn)現(xiàn)象：串口以9600的波特率持續(xù)接收到數(shù)據(jù) 01，02，03，04，05，06 和程序中的數(shù)據(jù)對應(yīng)，正確無誤。

發(fā)送測試：之后嘗試向其發(fā)送數(shù)據(jù)， 查看VC-02是否能正常轉(zhuǎn)發(fā)回來（關(guān)閉HEX顯示， 發(fā)送的數(shù)據(jù)和接受的一致）。

使用語音命令控制串口發(fā)送數(shù)據(jù)

1、創(chuàng)建文件

hb_user_uart_testing.c在/home/vc02/Downloads/uni_hb_m_solution/unione_lite_app_hb_m/user/src/examples下

#include"user_uart.h"
#include"user_event.h"
#include"user_player.h"
#include"user_config.h"
#defineTAG"hb_uart_voice"
staticuni_pthread_tg_uart_thread_id =0;
staticboolg_uart_thread_running =false;
// 串口發(fā)送線程函數(shù)
staticvoid_uart_send_task(void*args) {
charbuf[6] = {1,2,3,4,5,6};
intret;
 g_uart_thread_running =true;
while(g_uart_thread_running) {
 LOGT(TAG,"Voice triggered UART send [1, 2, 3, 4, 5, 6]");
  ret =user_uart_send(buf,sizeof(buf));
 LOGT(TAG,"UART send done, ret=%d", ret);
 uni_msleep(2000);// 每隔2秒發(fā)送一次
 }
}
// 創(chuàng)建發(fā)送線程
staticResult _create_uart_thread(void) {
if(g_uart_thread_running) {
 returnE_OK;
 }
 thread_param param;
uni_memset(¶m,0,sizeof(param));
 param.stack_size = STACK_SMALL_SIZE;
 param.priority = OS_PRIORITY_LOW;
uni_strncpy(param.task_name,"uart_voice",sizeof(param.task_name) -1);
if(0!=uni_pthread_create(&g_uart_thread_id, ¶m, _uart_send_task,NULL)) {
 returnE_FAILED;
 }
uni_pthread_detach(g_uart_thread_id); // 自動資源回收
returnE_OK;
}
// 停止發(fā)送線程
staticvoid_stop_uart_thread(void) {
if(!g_uart_thread_running)return;
 g_uart_thread_running =false;
if(g_uart_thread_id !=0) {
 uni_pthread_destroy(g_uart_thread_id);
  g_uart_thread_id =0;
 }
}
// 語音喚醒命令回調(diào)
staticvoid_on_wakeup_cmd_cb(USER_EVENT_TYPE event,user_event_context_t*context) {
if(context ==NULL)return;
event_goto_awakend_t*awake = &context->goto_awakend;
if(strcmp(awake->cmd,"wakeup_uni") ==0) {
  _create_uart_thread(); // 啟動串口線程
 user_player_reply_list_random(awake->reply_files); // 播放語音回復(fù)
 }
}
// 自定義設(shè)置命令回調(diào)
staticvoid_custom_setting_cb(USER_EVENT_TYPE event,user_event_context_t*context) {
if(context ==NULL)return;
event_custom_setting_t*setting = &context->custom_setting;
if(strcmp(setting->cmd,"TurnOn") ==0) {
  _stop_uart_thread(); // 停止串口線程
 user_player_reply_list_random(setting->reply_files); // 播放語音回復(fù)
 }
}
// 注冊語音事件回調(diào)
staticvoid_register_event_callback(void) {
user_event_subscribe_event(USER_GOTO_AWAKENED, _on_wakeup_cmd_cb);
user_event_subscribe_event(USER_CUSTOM_SETTING, _custom_setting_cb);
}
// 主入口
inthb_user_uart_voice_control(void){
if(0!=user_uart_init(NULL)) {
 LOGE(TAG,"UART init failed");
 return-1;
 }
 _register_event_callback();
return0;
}

輸入上述代碼， 其主要的業(yè)務(wù)邏輯就是通過喚醒命令來觸發(fā)串口的定時輸出，然后通過TrunOn的命令來關(guān)閉串口輸出的線程。

2、添加編譯支持在

/home/vc02/Downloads/uni_hb_m_solution/unione_lite_app_hb_m/build/user/src/examples下的subdir.mk添加對當(dāng)前編譯文件的引用。

3、修改

/home/vc02/Downloads/uni_hb_m_solution/unione_lite_app_hb_m/user/inc/user_config.h文件， 增加對應(yīng)的demo宏支持。

4、修改

/home/vc02/Downloads/uni_hb_m_solution/unione_lite_app_hb_m/user/src/user_main.c，增加對上述自定義宏的支持。

5-、編譯并且燒錄固件。

實(shí)驗(yàn)現(xiàn)象

燒錄完成之后， 串口默認(rèn)不輸出任何數(shù)據(jù)。

當(dāng)識別到語音命令“你好小美” 之后將開始打印01 02 03 04 05。

當(dāng)識別到語音命令“打開燈光” 的時候?qū)h除串口發(fā)送進(jìn)程， 串口停止輸出。

如上圖所示， 此時的串口處于打開狀態(tài)，但是沒有輸出數(shù)據(jù)。