接上前面兩篇文章:

基于事件型表驅(qū)動(dòng)法菜單框架之小熊派簡(jiǎn)易氣體探測(cè)器實(shí)戰(zhàn)項(xiàng)目開(kāi)發(fā)(上)

基于事件型表驅(qū)動(dòng)法菜單框架之小熊派簡(jiǎn)易氣體探測(cè)器實(shí)戰(zhàn)項(xiàng)目開(kāi)發(fā)(中)

今天這篇文章不作為氣體探測(cè)器實(shí)戰(zhàn)項(xiàng)目的最后一節(jié)，因?yàn)楹芏喙δ苓€在編寫(xiě)中，前兩天在世偉兄的開(kāi)源群里提到了傳感器檢測(cè)框架，群友反應(yīng)說(shuō)：楊工有空你要多搞點(diǎn)這種框架出來(lái)分享分享，感覺(jué)很有用啊！

今天分享的這個(gè)傳感器驅(qū)動(dòng)檢測(cè)框架也是我在副業(yè)里給客戶(hù)做的那些項(xiàng)目里用得最多的騷技能(但主業(yè)上的產(chǎn)品我?guī)缀蹙蜎](méi)用過(guò)，還是我說(shuō)的那句話：沒(méi)有明確需求的產(chǎn)品，別提什么復(fù)用性和高逼格)，所以今天就拿出來(lái)說(shuō)一說(shuō)。

看下之前這個(gè)項(xiàng)目里寫(xiě)的這個(gè)氣體傳感器MQ-2的檢測(cè)流程：

void?Test_CallBack(void)
{

????static?uint8_t?Count_AMI?=?0;
????static?uint8_t?Refresh_flag?=?0?;
????int?smoke_value?=?0?;
????static?uint8_t?display_result_flag?=?0?;

????if(Flow_Cursor.flow_cursor?==?TEST_PAGE?&&?detect_logic.Start_Detect?==?1)
????{
????????switch(detect_logic.Detect_Step)
????????{
????????????case?BASE_LINE:
????????????????Count_AMI++?;

????????????????if(Count_AMI?>?2)
????????????????????Count_AMI?=?0?;

????????????????icon_reflash(Count_AMI);
????????????????smoke_value?=?mq2_sensor_interface.get_smoke_value(&mq2_sensor_interface)?;

????????????????if(smoke_value?????????????????{
????????????????????display_smoke_value(smoke_value,?GREEN,?1);
????????????????????++detect_logic.Count_Base?;
????????????????}
????????????????else
????????????????{
????????????????????display_smoke_value(smoke_value,?RED,?1);
????????????????}

????????????????if(detect_logic.Count_Base?>?10)
????????????????{
????????????????????detect_logic.Count_Base?=?0?;
????????????????????display_result_flag?=?0?;
????????????????????/*隱藏基準(zhǔn)*/
????????????????????display_base(0);
????????????????????/*顯示檢測(cè)*/
????????????????????display_detect(1);
????????????????????/*顯示進(jìn)度條框*/
????????????????????Display_Process_Bar_Frame(1);
????????????????????/*切換到檢測(cè)中*/
????????????????????detect_logic.Detect_Step?=?DETECTING?;
????????????????????break?;
????????????????}

????????????????break?;

????????????case?DETECTING:
????????????????Count_AMI++?;

????????????????if(Count_AMI?>?2)
????????????????????Count_AMI?=?0?;

????????????????icon_reflash(Count_AMI);
????????????????++detect_logic.Test_Process?;

????????????????/*測(cè)試安全*/
????????????????if(detect_logic.Test_Process?==?100?&&?mq2_sensor_interface.Smoke_Value?????????????????{
????????????????????detect_logic.Detect_Step?=?DETECT_SAFETY?;
????????????????????Display_Process_Bar(0,?0);
????????????????????display_smoke_value(smoke_value,?BLACK,?0);
????????????????????/*隱藏檢測(cè)*/
????????????????????display_detect(0);
????????????????????/*顯示安全*/
????????????????????display_safety(1);
????????????????????break?;
????????????????}
????????????????else
????????????????{
????????????????????smoke_value?=?mq2_sensor_interface.get_smoke_value(&mq2_sensor_interface)?;

????????????????????if(mq2_sensor_interface.Smoke_Value?????????????????????{
????????????????????????display_smoke_value(smoke_value,?GREEN,?1);
????????????????????}
????????????????????else
????????????????????{
????????????????????????display_smoke_value(smoke_value,?RED,?1);
????????????????????????detect_logic.Count_Alarm++?;

????????????????????????if(detect_logic.Count_Alarm?>?5)
????????????????????????{
????????????????????????????detect_logic.Detect_Step?=?DETECT_DANGER?;
????????????????????????????detect_logic.Count_Alarm?=?0?;
????????????????????????????display_smoke_value(smoke_value,?BLACK,?0);
????????????????????????????Display_Process_Bar(0,?0);
????????????????????????????/*隱藏檢測(cè)*/
????????????????????????????display_detect(0);
????????????????????????????/*顯示危險(xiǎn)*/
????????????????????????????display_danger(1);
????????????????????????????break?;
????????????????????????}
????????????????????}

????????????????????Display_Process_Bar(detect_logic.Test_Process,?1);
????????????????}

????????????????break?;

????????????case?DETECT_SAFETY:
????????????????detect_logic.Start_Detect?=?0?;

????????????????if(display_result_flag?==?0)
????????????????{
????????????????????display_result_flag?=?1?;
????????????????????smoke_value?=?mq2_sensor_interface.get_smoke_value(&mq2_sensor_interface)?;
????????????????????display_smoke_value(smoke_value,?GREEN,?1);
????????????????}

????????????????break?;

????????????case?DETECT_DANGER:
????????????????/*危險(xiǎn)閃爍*/
????????????????Refresh_flag?=?!Refresh_flag?;
????????????????display_danger(Refresh_flag);
????????????????mq2_sensor_interface.led_control(&mq2_sensor_interface,?Refresh_flag);
????????????????mq2_sensor_interface.buzzer_control(&mq2_sensor_interface,?Refresh_flag);

????????????????if(display_result_flag?==?0)
????????????????{
????????????????????display_result_flag?=?1?;
????????????????????smoke_value?=?mq2_sensor_interface.get_smoke_value(&mq2_sensor_interface)?;
????????????????????display_smoke_value(smoke_value,?RED,?1);
????????????????}

????????????????break?;

????????????default:
????????????????break?;
????????}
????}
}

寫(xiě)完后看了一下，邏輯上沒(méi)有什么毛病，運(yùn)行以后最終測(cè)試的結(jié)果也是我想要的結(jié)果就直接提交到Github和碼云倉(cāng)庫(kù)上去了。所謂士別三日，非吳下阿蒙，過(guò)幾天再看這代碼，表示我已經(jīng)看不下去了，居然一個(gè)函數(shù)能寫(xiě)這么長(zhǎng)！看著不累不亂嗎？于是吐槽了下自己：fuck me!，臥槽！這寫(xiě)的什么垃圾代碼？不像我的個(gè)人風(fēng)格，不應(yīng)該更高逼格一點(diǎn)嗎？于是就有了表驅(qū)動(dòng)+狀態(tài)機(jī)法傳感器驅(qū)動(dòng)檢測(cè)框架的誕生。

1、核心傳感器檢測(cè)框架

上面那個(gè)寫(xiě)得很長(zhǎng)的傳感器檢測(cè)流程，其實(shí)說(shuō)白了就是兩部分：

• 1、當(dāng)前到底是對(duì)應(yīng)哪個(gè)傳感器檢測(cè)流程(狀態(tài)機(jī))？
• 2、當(dāng)前對(duì)應(yīng)傳感器檢測(cè)流程的處理

于是我們就可以把這個(gè)過(guò)程抽象化成一個(gè)數(shù)據(jù)結(jié)構(gòu)sensor_frame，將這兩個(gè)部分相應(yīng)的共同點(diǎn)提煉出來(lái)，這里就包括傳感器檢測(cè)流程sensor_detect_step，這里主要有基準(zhǔn)、檢測(cè)中、安全、危險(xiǎn)；傳感器檢測(cè)流程處理函數(shù)handler_func是一個(gè)帶形參的函數(shù)指針，這個(gè)參數(shù)在這里表示傳感器數(shù)值，當(dāng)然這個(gè)值可以是浮點(diǎn)型，也可以是其它類(lèi)型，具體根據(jù)傳感器的數(shù)據(jù)類(lèi)型去定義，這里我把它定義成int型。

接下來(lái)我們還需要一個(gè)傳感器的檢測(cè)業(yè)務(wù)結(jié)構(gòu)，用于實(shí)現(xiàn)檢測(cè)流程切換(狀態(tài)機(jī))以及一些其它的邏輯操作，這里提供了一個(gè)Sensor_Cursor的數(shù)據(jù)結(jié)構(gòu)。

/*檢測(cè)流程*/
enum
{
????BASE_LINE_STEP?=?0,
????DETECTING_STEP,
????DETECT_SAFETY_STEP,
????DETECT_DANGER_STEP
};

typedef?void?(*sensor_handler)(int);
typedef?struct
{
????/*傳感器檢測(cè)流程*/
????uint8_t?sensor_detect_step?;
????/*傳感器檢測(cè)流程處理*/
????sensor_handler?handler_func?;
}?sensor_frame;

/*傳感器狀態(tài)機(jī)+流程處理集*/
typedef?struct
{
????uint8_t?Detect_Step?;?/*檢測(cè)流程*/
????uint8_t?Count_AMI??;?/*動(dòng)畫(huà)計(jì)數(shù)器*/
????uint8_t?Start_Detect;?/*開(kāi)始測(cè)試標(biāo)志*/
????uint8_t?Count_Base??;?/*統(tǒng)計(jì)基準(zhǔn)次數(shù)*/
????uint8_t?Count_Alarm?;?/*統(tǒng)計(jì)報(bào)警次數(shù)*/
????uint8_t?Test_Process;?/*測(cè)試進(jìn)度*/
}?Sensor_Cursor?;
extern?Sensor_Cursor?Sensor_Flow_Cursor?;

2、傳感器驅(qū)動(dòng)檢測(cè)框架應(yīng)用

有了這個(gè)最基本的框架結(jié)構(gòu)，接下來(lái)照葫蘆畫(huà)瓢，把前面兩篇文章介紹的菜單表驅(qū)動(dòng)框架的代碼復(fù)制粘貼然后稍微騷操作一下，于是我們就看到了以下的形態(tài)：

/*基準(zhǔn)流程*/
void?sensor_base_line_step(int?adc);
/*檢測(cè)中流程*/
void?sensor_detecting_step(int?adc);
/*檢測(cè)安全*/
void?sensor_detect_safety(int?adc);
/*檢測(cè)危險(xiǎn)*/
void?sensor_detect_danger(int?adc);

/*傳感器驅(qū)動(dòng)表定義*/
static?sensor_frame?sensor_opStruct[]?=
{
????{BASE_LINE_STEP,????sensor_base_line_step},??/*基準(zhǔn)*/
????{DETECTING_STEP,????sensor_detecting_step},??/*檢測(cè)中*/
????{DETECT_SAFETY_STEP,?sensor_detect_safety},???/*安全*/
????{DETECT_DANGER_STEP,?sensor_detect_danger},???/*危險(xiǎn)*/
};

/*傳感器流程處理*/
int?Sensor_Handler(int8_t?op,?int?adc_value)
{
????assert(op?>=?sizeof(sensor_opStruct)?/?sizeof(sensor_opStruct[0]));
????assert(op?????sensor_opStruct[op].handler_func(adc_value);
????return?0?;
}

這樣看起來(lái)舒服多了有木有？？在程序后期調(diào)試中，如果想增加傳感器檢測(cè)流程，或者說(shuō)發(fā)現(xiàn)傳感器檢測(cè)哪個(gè)流程有BUG，那這不就直接就可以找到了嗎？整個(gè)框架組成清晰明了，我們只需要分別去實(shí)現(xiàn)如上的基準(zhǔn)、檢測(cè)中、安全、危險(xiǎn)四個(gè)流程對(duì)應(yīng)的處理函數(shù)就可以了。

在進(jìn)入檢測(cè)頁(yè)面時(shí)還需要實(shí)現(xiàn)并調(diào)用傳感器檢測(cè)初始化函數(shù)，這個(gè)初始化函數(shù)主要是對(duì)一些原始數(shù)據(jù)(比如檢測(cè)流程中用到的一些計(jì)數(shù)變量)進(jìn)行清0操作，然后將檢測(cè)流程設(shè)置為最開(kāi)始的基準(zhǔn)流程。

/*傳感器檢測(cè)初始化*/
void?Sensor_Detect_Init(void)
{
????Sensor_Flow_Cursor.Count_AMI?=?0?;
????Sensor_Flow_Cursor.Count_Base?=?0?;
????Sensor_Flow_Cursor.Count_Alarm?=?0?;
????Sensor_Flow_Cursor.Test_Process?=?0?;
????Sensor_Flow_Cursor.Start_Detect?=?1?;
????Sensor_Flow_Cursor.Detect_Step?=?BASE_LINE_STEP?;
}

我們可以來(lái)看下其中有關(guān)基準(zhǔn)流程的處理：

/*基準(zhǔn)流程*/
void?sensor_base_line_step(int?adc)
{
????Sensor_Flow_Cursor.Count_AMI++?;

????if(Sensor_Flow_Cursor.Count_AMI?>?2)
????????Sensor_Flow_Cursor.Count_AMI?=?0?;

????/*刷新動(dòng)畫(huà)*/
????icon_reflash(Sensor_Flow_Cursor.Count_AMI);

????/*判斷是否滿(mǎn)足基準(zhǔn)條件*/
????if(adc?????{
????????display_smoke_value(adc,?GREEN,?1);
????????++Sensor_Flow_Cursor.Count_Base?;
????}
????else
????{
????????display_smoke_value(adc,?RED,?1);
????}

????if(Sensor_Flow_Cursor.Count_Base?>?10)
????{
????????Sensor_Flow_Cursor.Count_Base?=?0?;
????????/*隱藏基準(zhǔn)*/
????????display_base(0);
????????/*顯示檢測(cè)*/
????????display_detect(1);
????????/*顯示進(jìn)度條框*/
????????Display_Process_Bar_Frame(1);
????????/*切換到檢測(cè)中*/
????????Sensor_Flow_Cursor.Detect_Step?=?DETECTING_STEP?;
????}
}

滿(mǎn)足通過(guò)基準(zhǔn)的條件，此時(shí)在該函數(shù)里寫(xiě)了這么一句代碼：

Sensor_Flow_Cursor.Detect_Step?=?DETECTING_STEP?;

這一句代碼就是檢測(cè)流程的切換(狀態(tài)機(jī))，后面的幾個(gè)流程也是類(lèi)似的，滿(mǎn)足條件則切換到下一個(gè)檢測(cè)流程。

最后我們只需要在原來(lái)傳感器定時(shí)后調(diào)函數(shù)Test_CallBack里這么寫(xiě)就可以了：

/*測(cè)試回調(diào)*/
void?Test_CallBack(void)
{
??int?smoke_value?=?0?;
??/*如果當(dāng)前在測(cè)試頁(yè)面?&&?開(kāi)始檢測(cè)標(biāo)志為1，則進(jìn)入傳感器數(shù)據(jù)處理*/
??if(Flow_Cursor.flow_cursor?==?TEST_PAGE?&&?Sensor_Flow_Cursor.Start_Detect?==?1)
??{
???smoke_value?=?mq2_sensor_interface.get_smoke_value(&mq2_sensor_interface)?;
???Sensor_Handler(Sensor_Flow_Cursor.Detect_Step,smoke_value);
??}
}

這才是我們想要的高逼格嘛！嘿嘿嘿！

表驅(qū)動(dòng)其實(shí)還有很多更騷的操作，今晚就分享到這里了，期待楊工下期精彩分享！

其余功能：后續(xù)還可以做報(bào)警記錄存儲(chǔ)、數(shù)據(jù)上傳到OneNet或者華為云等平臺(tái)、參數(shù)設(shè)置等等，總之這個(gè)項(xiàng)目可拓展性非常強(qiáng)，這些功能將在本項(xiàng)目開(kāi)發(fā)的下一章節(jié)持續(xù)進(jìn)行拓展并分享，歡迎及時(shí)關(guān)注我的碼云倉(cāng)庫(kù)與微信公眾號(hào)文章更新。

本節(jié)代碼已同步到碼云的代碼倉(cāng)庫(kù)中：

獲取方法如下：

1、新建一個(gè)文件夾

2、使用git clone遠(yuǎn)程獲取小熊派所有案例代碼

我還將之前做的一些項(xiàng)目以及練習(xí)例程在近期內(nèi)全部上傳完畢，與大家一起分享交流：

公眾號(hào)粉絲福利時(shí)刻

這里我給大家申請(qǐng)到了福利，本公眾號(hào)讀者購(gòu)買(mǎi)小熊派開(kāi)發(fā)板可享受9折優(yōu)惠，有需要購(gòu)買(mǎi)小熊派以及騰訊物聯(lián)網(wǎng)開(kāi)發(fā)板的朋友，淘寶搜索即可，跟客服說(shuō)你是公眾號(hào)：嵌入式云IOT技術(shù)圈?的粉絲，立享9折優(yōu)惠！

往期精彩

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覺(jué)得本次分享的文章對(duì)您有幫助，隨手點(diǎn)[在看]并轉(zhuǎn)發(fā)分享，也是對(duì)我的支持。