進(jìn)入睡眠模式,手冊(cè)上說(shuō)會(huì)暫停數(shù)碼管和鍵盤掃描,但是我這個(gè)數(shù)碼管還亮著。。。 睡眠模式命令是:0x4402吧?
在休眠之前,先關(guān)閉顯示,然后再發(fā)睡眠命。
呃,調(diào)了好久發(fā)現(xiàn)問(wèn)題了。。 我是用鍵盤某個(gè)按鍵設(shè)定為睡眠功能。按下鍵之后,通過(guò)中斷方式讀取按鍵編碼,若與睡眠鍵編碼相等則發(fā)送睡眠命令。在線調(diào)試的時(shí)候能正常睡眠,但是給板子上電跑的時(shí)候不行,然后我再給454發(fā)送睡眠命令之前延時(shí)大于450ms,就能正常睡眠了。 是不是在兩次對(duì)454的讀和寫之間必須要有一個(gè)比較大的時(shí)間~~
這個(gè)倒是沒(méi)有特別的要求!如果可以,你程序貼出來(lái)給我看一下!
void interrupt VectorNumber_Vtimch2 Timer2(void) { EnableInterrupts; DISABLE_KEY_INTERRUPT; CLEAR_KEY_INTER_FLAG; Key_Code =CH454GetKey(); DISABLE_KEY_INTERRUPT;//因在CH454Stop函數(shù)結(jié)束時(shí)開啟了中斷,所以此時(shí)中斷函數(shù)尚未結(jié)束,需關(guān)閉 //以下根據(jù)實(shí)際需要修改功能【【【【【【【【【【【【【【【【【【【 #ifdef DEBUG switch(Key_Code){ case 0x58:Key_Code =0x01; break; case 0x59:Key_Code =0x02; break; case 0x5a:Key_Code =0x03; break; case 0x50:Key_Code =0x04; break; case 0x51:Key_Code =0x05; break; case 0x52:Key_Code =0x06; break; case 0x48:Key_Code =0x07; break; case 0x49:Key_Code =0x08; break; case 0x4a:Key_Code =0x09; break; case 0x5b:Key_Code =0x00; break; case 0x40:{ if(CH454_Temp_Flag !=CH454_NULL){//說(shuō)明上一次輸入?yún)?shù)后并未按確認(rèn)鍵 CH454_Buffer =0; } CH454_Temp_Flag =CH454_KP; Key_Code =CH454_NULL; Dial_Times |=(KP_LEN |0x80); }break; case 0x41:{ if(CH454_Temp_Flag !=CH454_NULL){//說(shuō)明上一次輸入?yún)?shù)后并未按確認(rèn)鍵 CH454_Buffer =0; } CH454_Temp_Flag =CH454_KI; Key_Code =CH454_NULL; Dial_Times |=(KI_LEN |0x80); }break; case 0x42:{ if(CH454_Temp_Flag !=CH454_NULL){//說(shuō)明上一次輸入?yún)?shù)后并未按確認(rèn)鍵 CH454_Buffer =0; } CH454_Temp_Flag =CH454_KD; Key_Code =CH454_NULL; Dial_Times |=(KD_LEN |0x80); }break; case 0x4b:{ if(CH454_Temp_Flag !=CH454_NULL){//說(shuō)明上一次輸入?yún)?shù)后并未按確認(rèn)鍵 CH454_Buffer =0; } CH454_Temp_Flag =CH454_SPEED; Key_Code =CH454_NULL; Dial_Times |=(SPEED_LEN |0x80); }break; case 0x53:{//確認(rèn)鍵 //進(jìn)行賦值操作 if((Dial_Times ==0x80) &&(CH454_Temp_Flag !=CH454_NULL)){ PORTB =CH454_Buffer; CH454_Temp_Flag =CH454_NULL; CH454_Buffer =0; } Key_Code =CH454_NULL; }break;
case 0x43:{//用作使鍵盤模塊處于休眠狀態(tài)或喚醒 if((Dial_Times ==0x80) &&(CH454_Temp_Flag ==CH454_NULL)){//參數(shù)輸入完畢,并且按了確認(rèn)鍵 DelayMs(10000); //必須加延時(shí),否則CH454將不能進(jìn)入睡眠模式?。。。?! Dial_Times &=0x7f; Key_Code =CH454_NULL; CH454Write(CH454_SLEEP); } }break; default: { CH454_Buffer =0; CH454_Temp_Flag =CH454_NULL; Key_Code =CH454_FAULT; } }
if((Dial_Times >0x80) &&(Key_Code !=CH454_NULL) &&(CH454_Temp_Flag !=CH454_NULL)){ CH454_Buffer +=Key_Code; if(Dial_Times >0x81){ CH454_Buffer =((CH454_Buffer <<3) +(CH454_Buffer <<1)); } Dial_Times--; } #endif
ENABLE_KEY_INTERRUPT; } #pragma CODE_SEG DEFAULT
最開始我把這些功能語(yǔ)句放在一個(gè)單獨(dú)的函數(shù)中,如果按下設(shè)定為睡眠模式的鍵,只要450ms就能使454睡眠,但是放到中斷函數(shù)中之后,需要10s才能進(jìn)入睡眠了。