dsa.rar_SUNPLUS_dsa_dsa 通信

/* ** FILE ** dsa.c ** ** DESCRIPTION ** control DSA interface. ** */ /////////////////////////////////////////////////// #include "global.h" #include "timer.h" #include "I2C.h" #ifdef SUPPORT_AUDIO #include "teavol.h" #endif #include "LCD.h" #ifdef SUPPORT_IR #include "ir.h" #endif #include "key.h" #include "keyproc.h" #ifdef SUPPORT_TV #include "tv.h" #include "typedef.h" #include "at1819_osd.h" #endif #if defined(MODE_V3) extern BYTE data gbDispTimer1; extern BYTE data CloseWaiting; extern BIT bOpenwaiting; extern BYTE data gbCDResetTimer; //========================= #endif #define DSA_T250MS TIMER_250ms #define SetDSA_DAT(x) DSA_DAT = x #define SetDSA_ACK(x) DSA_ACK = x #define SetDSA_STB(x) DSA_STB = x #define GetDSA_DAT() (DSA_DAT) #define GetDSA_ACK() (DSA_ACK) #define GetDSA_STB() (DSA_STB) #define SetDAT_READ() DSA_DAT = 1 #define SetACK_READ() DSA_ACK = 1 #define SetSTB_READ() DSA_STB = 1 BYTE data gbDSATimer = 0; BIT bCDPlayState = 0; //BIT FLAG=0; //=====modify=============== // 4 - 29 - v1 // cd-mp3 display bug //======================== BIT bClear=0,bOpenClose ; BYTE gbDiscState; //$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$// #define DSA_CMD_BUF_SIZE 10 BYTE MuteEn=0; BIT bMuteFreeze=0; BIT bMuteOff=0; //========================= //=====modify============== // 6 - 21 - v1 // dsp reset //========================= BIT bOldState=0; BIT bCheckUp=0; //========================= //=====modify============== // 6 - 23 - v1 // dsp reset //========================= BIT bCDReset; BIT bCDResetAct; #ifdef SUPPORT_DSA_RESET extern BYTE gbDsaReset; BIT bDsafirst; #endif //========================== BYTE gbNeedOpen=0; BIT dsa_send_flag = 0; BIT dsa_receive_flag = 0; static BYTE data dsa_mode = 0; static UINT16 data dsa_in_data; static UINT16 data dsa_out_data = 0; static BYTE idata dsa_send_data_head, dsa_send_data_tail; static UINT16 idata dsa_send_data[DSA_CMD_BUF_SIZE]; #define DSA_IDLE 0 #define DSA_R_SYNC 1 #define DSA_R_SYNC_WAIT 2 #define DSA_R_READ 3 #define DSA_R_WAIT 4 #define DSA_R_ACK 5 #define DSA_R_END 6 #define DSA_R_END_ALL 7 #define DSA_T_SYNC 8 #define DSA_T_SYNC_WAIT 9 #define DSA_T_SEND 10 #define DSA_T_WAIT 11 #define DSA_T_ACK 12 #define DSA_T_END 13 #define DSA_T_END_ALL 14 Uint16 tmp=0; void write_data_to_dsabuf(Uint16 vaule) { #ifdef SIMULATE_232 RS232_WriteStr("s="); RS232_WriteHex81((BYTE)(vaule>>8)); RS232_WriteHex81((BYTE)(vaule&0x00ff)); #endif dsa_send_data[dsa_send_data_tail] = vaule; dsa_send_data_tail++; if(dsa_send_data_tail >= DSA_CMD_BUF_SIZE) dsa_send_data_tail = 0; } static void Dsa_Rcom(void) { if((dsa_send_flag == 0) && (dsa_send_data_head != dsa_send_data_tail)){ dsa_out_data = dsa_send_data[dsa_send_data_head]; dsa_send_flag = 1; dsa_send_data_head++; if(dsa_send_data_head >= DSA_CMD_BUF_SIZE) dsa_send_data_head = 0; } } static void Dsa_Process(void) { static BYTE nCounter; switch(dsa_mode){ case DSA_IDLE: // reset dsa to idle mode; detect send or receive gbDSATimer = DSA_T250MS; if(!GetDSA_DAT()){ dsa_mode = DSA_R_SYNC; SetDSA_ACK(0); nCounter = 0; }else if(dsa_send_flag){ /* if((dsa_out_data&0xff00)==0xd200){ // LCD_Debug_Key(dsa_out_data); // LCD_Debug_Key(dsa_send_data_tail); //gbDispTimer1=TIMER_1s; //while(gbDispTimer1); tmp=dsa_out_data; }*/ SetDSA_DAT(0); dsa_mode = DSA_T_SYNC; nCounter = 0; } else Dsa_Rcom(); break; case DSA_T_SYNC: if(!GetDSA_ACK()){ SetDSA_DAT(1); dsa_mode = DSA_T_SYNC_WAIT; } break; case DSA_T_SYNC_WAIT: if(GetDSA_ACK()){ dsa_mode = DSA_T_SEND; } break; case DSA_T_SEND: if(dsa_out_data & (1 << (15 - nCounter))) SetDSA_DAT(1); else SetDSA_DAT(0); SetDSA_STB(0); dsa_mode = DSA_T_WAIT; break; case DSA_T_WAIT: if(!GetDSA_ACK()) { SetDSA_STB(1); dsa_mode = DSA_T_ACK; } break; case DSA_T_ACK: if(GetDSA_ACK()) { if(nCounter == 15) { SetSTB_READ(); SetDAT_READ(); SetDSA_ACK(0); dsa_mode = DSA_T_END; } else { nCounter++; dsa_mode = DSA_T_SEND; } } break; case DSA_T_END: if(!GetDSA_STB()) { BIT bRCVResponse = GetDSA_DAT(); SetDSA_ACK(1); dsa_mode = DSA_T_END_ALL; if(bRCVResponse) { dsa_send_flag = 0; } } break; case DSA_T_END_ALL: if(GetDSA_STB()) { SetDAT_READ(); SetACK_READ(); SetSTB_READ(); dsa_mode = DSA_IDLE; } break; case DSA_R_SYNC: if(GetDSA_DAT()) { SetSTB_READ(); SetDSA_ACK(1); dsa_in_data = 0; dsa_mode = DSA_R_READ; } break; case DSA_R_READ: if(!GetDSA_STB()) { dsa_in_data |= GetDSA_DAT(); SetDSA_ACK(0); dsa_mode = DSA_R_WAIT; } break; case DSA_R_WAIT: if(GetDSA_STB()){ SetDSA_ACK(1); dsa_mode=DSA_R_ACK; } break; case DSA_R_ACK: if(nCounter == 15) { SetACK_READ(); SetDSA_DAT(1); dsa_mode = DSA_R_END; } else { nCounter++; dsa_in_data <<= 1; dsa_mode = DSA_R_READ; } break; case DSA_R_END: if(!GetDSA_ACK()) { SetDSA_DAT(1); SetDSA_STB(0); dsa_mode = DSA_R_END_ALL; } break; case DSA_R_END_ALL: if(GetDSA_ACK()) { SetDAT_READ(); SetACK_READ(); SetSTB_READ(); dsa_mode = DSA_IDLE; dsa_receive_flag = 1; } break; default: gbDSATimer = 0; dsa_mode = DSA_IDLE; break; } if(!gbDSATimer) { SetDAT_READ(); SetACK_READ(); SetSTB_READ(); dsa_mode = DSA_IDLE; dsa_send_flag = 0; dsa_receive_flag=0; } } static void VCD_key_server() { Uint8 curkey; curkey = SYS_get_key(); if(gbOsdTimer&0x80){ gbOsdTimer=0; if(gbSysState.Sub==TV_NORMAL_STATE)OsdClear(); } #ifdef SIMULATE_232 if(curkey&0x3f) send_asc(" key=", curkey); #endif #ifdef SUPPORT_MUTE_RELEASE if(bMuteFreeze){ if(((curkey & 0x3f)!=KEY_SOURCE)&&((curkey & 0x3f)!=KEY_MUTE)\ &&((curkey & 0x3f)!=KEY_VOL_UP)&&((curkey &0x3f)!=KEY_VOL_DOWN)\