讀片內及片外擴展RAM參考C語言程序

1、/讀片外擴展RAM,內部R/C時鐘及ID號C語言參考程序/* - STC International Limited - */* - 宏晶科技 姚永平 2009/3/19 V1.0 - */* - STC11Fxx/10Fxx 系列單片機,讀片外擴展RAM,軟件實現(xiàn)自定義下載程序- */* - Mobile:- */* - Fax:- */* - Tel:- */* - Web: www.mcu- - */* - 本演示程序在STC-ISP Ver 3.0A.PCB的下載編程工具上測試通過 - */* - 如

2、果要在程序中使用該程序,請在程序中注明使用了宏晶科技的資料及程序 - */* - 如果要在文章中引用該程序,請在文章中注明使用了宏晶科技的資料及程序- */#include #include sfr IAP_CONTR = 0xC7;sbit MCU_Start_Led = P17;/unsigned char self_command_array4 = 0x22,0x33,0x44,0x55;#define Self_Define_ISP_Download_Command 0x22/#define RELOAD_COUNT 0xfb /18.432MHz,12T,SMOD=0,9600bps

3、#define RELOAD_COUNT 0xfd /11.0592MHz,12T,SMOD=0,9600bpsvoid serial_port_initial(;void send_UART(unsigned char;void UART_Interrupt_Receive(void;void soft_reset_to_ISP_Monitor(void;void delay(void;void display_MCU_Start_Led(void;void main(voidunsigned char i = 0;unsigned char j = 0;unsigned char temp

4、_data = 0;unsigned int k = 0; unsigned char xdata *xdata_point;/ unsigned char idata *idata_point;serial_port_initial(; /串口初始化/ display_MCU_Start_Led(; /點亮發(fā)光二極管表示單片機開始工作/ send_UART(0x34; /串口發(fā)送數據表示單片機串口正常工作/ send_UART(0xa7; /串口發(fā)送數據表示單片機串口正常工作/ xdata_point = 0x400;xdata_point = 0x0000;/ temp_data = 0;

5、temp_data = 0xff;for(k=0;k<32768;k+*xdata_point = temp_data;xdata_point+;xdata_point = 0x0000;for(k=0;k<32768;k+i = 0;/ P0 = 0xFF;i = *xdata_point;send_UART(i;xdata_point+;/* for(j=0;j<255;j+*xdata_point = temp_data;temp_data+;xdata_point+;/ xdata_point = 0x400;xdata_point = 0x7800;for(j=0;

6、j<255;j+i = 0;/ P0 = 0xFF;i = *xdata_point;send_UART(i;xdata_point+;idata_point = 0xF1;for(j=0;j<15;j+i = *idata_point;send_UART(i;idata_point+;*/while(1;void serial_port_initial(SCON = 0x50; /0101,0000 8位可變波特率，無奇偶校驗位TMOD = 0x21; /0011,0001 設置頂時器1為8位自動重裝計數器TH1 = RELOAD_COUNT; /設置定時器1自動重裝數TL1 =

7、 RELOAD_COUNT;TR1 = 1; /開定時器1ES = 1; /允許串口中斷EA = 1; /開總中斷void send_UART(unsigned char iES = 0; /關串口中斷TI = 0; /清零串口發(fā)送完成中斷請求標志SBUF = i;while(TI =0; /等待發(fā)送完成TI = 0; /清零串口發(fā)送完成中斷請求標志ES = 1; /允許串口中斷void UART_Interrupt_Receive(void interrupt 4unsigned char k = 0;if(RI=1RI = 0;k = SBUF;if(k=Self_Define_ISP_D

8、ownload_Command /是自定義下載命令delay(; /延時1秒就足夠了delay(; /延時1秒就足夠了soft_reset_to_ISP_Monitor(; /軟復位到系統(tǒng)ISP監(jiān)控區(qū)send_UART(k;elseTI = 0;void soft_reset_to_ISP_Monitor(voidIAP_CONTR = 0x60; /0110,0000 軟復位到系統(tǒng)ISP監(jiān)控區(qū)void delay(voidunsigned int j = 0;unsigned int g = 0;for(j=0;j<5;j+for(g=0;g<60000;g+_nop_(;_nop_(;_nop_(;_nop_(;_nop_(;void display_MCU_Start_Led(void unsigned char i =