WebSep 13, 2016 · To calculate an SFR bit address, add the bit position to the SFR byte address. So, to access bit 6 in the SFR at 0xC8, the SFR bit address would be 0xCE (0xC8 + 6). Special function bits represent an independent declaration class that may not be interchangeable with other bit declarations or bit fields. Websbit AC = PSW^6; //辅助进位标志位 sbit F0 = PSW^5; //用户标志位0 sbit RS1 = PSW^4; //工作寄存器组选择控制位
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WebMar 11, 2024 · sbit AC = PSW^6; sbit F0 = PSW^5; sbit RS1 = PSW^4; sbit RS0 = PSW^3; sbit OV = PSW^2; sbit P = PSW^0; //8052 only /* TCON */ sbit TF1 = TCON^7; sbit TR1 = … WebSep 13, 2016 · sbit-address is the address of the SFR bit. With typical 8051 applications, it is often necessary to access individual bits within an SFR. The sbit type provides access to bit-addressable SFRs and other bit-addressable objects. For example: sbit EA = 0xAF; This declaration defines EA as the SFR bit at address 0xAF. face turned to the side drawing
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WebFeb 9, 2024 · sbit CY = PSW^7; sbit AC = PSW^6; sbit F0 = PSW^5; sbit RS1 = PSW^4; sbit RS0 = PSW^3; sbit OV = PSW^2; sbit P = PSW^0; //----------------------------------- sfr SP = 0x81; //Stack Pointer 0000,0111 sfr DPL = 0x82; //Data Poin te r Low Byte 0000,0000 sfr DPH = 0x83; //Data Pointer High Byte 0000,0000 Web/*----- AT89LP52.H Header file for Atmel AT89LP52 based devices. Copyright 2010 (c) Keil(TM) Tools by ARM(R) All rights reserved. -----*/ #ifndef __AT89LP52_H__ # ... WebIn the following example, the SFR registers’ names are replaced with their addresses. We can select the corresponding Register Bank bit using RS0 and RS1 bits. The Program Status Word (PSW) contains status bits to reflect the current state of the CPU. The 8051 variants provide one special function register, PSW, with this status information. does southwest fly into louisville kentucky