应广单片机demo

//PMC150 引脚定义 //================================================================================ // VDD |1 8| GND // PA7 |2 7| PA0 // PA6 |3 6| PA4 // PA5/PRST# |4 5| PA3 //================================================================================ #include "extern.h" .ramadr 0 //地址定义为0 word gw_Point; .ramadr system //以后变量地址由系统自行决定 word gw_T16Cnt; word gw_Cnt; byte gb_Flag; bit b_T16_1ms : gb_Flag.0 //1MS bit b_1S_F : gb_Flag.1 //1S byte gb_KeyDebounce; byte gb_KeyNew; byte gb_KeyOld; byte gb_KeyValue; D_KEYPORT equ 0b_0000_0001 D_KEY1 equ 0b_0000_0001 D_KeyBounce equ 30*1000/1024 //30ms //================================================================================ // //-------------------------------------------------------------------------------- void Test_DirectScanKey(void) { if(b_T16_1ms) { b_T16_1ms = 0; a = pa & D_KEYPORT; a ^= D_KEYPORT; if(gb_KeyNew == a) {//读到值相同值,Debouce if(--gb_KeyDebounce == 0) {//Debounce结束 if(gb_KeyOld != gb_KeyNew) { gb_KeyValue = gb_KeyNew; gb_KeyOld = gb_KeyNew; } } } else { gb_KeyNew = a; gb_KeyDebounce = D_KeyBounce; } } } void Test_KeyProcess(void) { //处理Key1 if(gb_KeyValue == D_KEY1) { gb_KeyValue = 0; //pa3 电平翻转 a = pa; a ^= 0x08; pa = a; } } //================================================================================ //TABLE //-------------------------------------------------------------------------------- void Pr0_Skip(void) { pcadd a; //a = 1~n,a值等于0时不能跳出pcadd循环 { ret 0xaa; ret 0xbb; ret 0xcc; ret 0xdd; ret 0xee; } } //================================================================================ void FPPA0(void) { .ADJUST_IC SYSCLK=IHRC/4, IHRC=16MHz, VDD=5V; pac = 0b_1111_1110; //pa0 pull high pa = 0b_0000_0000; paph = 0b_0000_0001; $ padier 0b_1111_1001; //------------------------------------------------------------ //清除RAM gw_Point = _SYS(RAM_SIZE)-1; a = 0; do { *gw_Point = a; }while(--gw_Point$0); //------------------------------------------------------------ //定时1MS gw_Point = 1024 - 1000; stt16 gw_T16Cnt; $ t16m SYSCLK,/4,bit10; intrq = 0; inten.2 = 1; engint; //------------------------------------------------------------ //从ROM中取数据 a = 0x02; Pr0_Skip(); //------------------------------------------------------------ while (1) { .wdreset; Test_DirectScanKey(); Test_KeyProcess(); } } //================================================================================ void Interrupt(void) { pushaf; if(intrq.t16) //1MS { intrq.t16 = 0; stt16 gw_T16Cnt; //test IO a = pa; a ^= 0x80; pa = a; b_T16_1ms = 1; gw_Cnt++; if(gw_Cnt > 999) {//1S计数 gw_Cnt = 0; b_1S_F = 1; } } popaf; } //================================================================================