附录Ar
H_REDBITP21；定义IO端口r
H_GREENBITP22r
H_YELLOWBITP23r
L_REDBITP24r
L_GREENBITP25r
L_YELLOWBITP26r
；主程序，选择设置红绿灯时间模式或自动调整模式r
ORG0000Hr
LJMPMAINr
ORG0003H；中断入口r
LJMPINT0r
ORG0030Hr
MAINMOVR320；用于嵌套50ms软件方法计时1sr
MOVR020；预设值红绿灯时间r
MOVR120r
CLREX0r
K1MOVCP37；等待检测何种模式按键按下r
ANLCP32r
JBCK1r
JNBP37F；F键按下为自动模式，进入扫描r
K2JNBP32S；S键按下并等待计数次数r
SJMPK2r
FLCALLDELAYr
MOVR030r
MOVR130r
SETB00Hr
SETBEAr
SETBEX1r
SJMPSTARTr
SLCALLDELAYr
CJNZR040V1r
MOVR020r
V1INCR0r
JNBP01r
JNBP36J；J键按下并等待计数次数r
SJMPK2r
JLCALLDELAYr
CJNZR140V2r
MOVR120r
V2INCR1r
JNBP36r
JNBP37START；设置完毕为设定时间模式，进入扫描r
JNBP36Jr
MOVP20DDH；预设信号灯状态，时间和车向r
MOVR4R0r
SETB01Hr
SETBEX0r
；程序开始，进行每50ms扫描r
STARTMOVTMOD01Hr
MOVTH03CHr
MOVTL00B0Hr
CLRTF0r
SETBTR0；开始50ms计时r
DJNZR3Y；1s是否计时完毕r
MOVR320r
DJNZR4Y；本状态是否结束，并进行下一状态设置r
MOVAP2r
CJNZA0DDHD1r
MOVP2BDHr
MOVR45r
D1CJNZABDHD2r
MOVP2EDHr
MOVR4R1r
CLR01Hr
D2CJNZAEDHD3r
MOVP2E7Hr
MOVR45r
JNB00HD3r
LCALLDATAr
D3CJNZAE7HYr
MOVR2DDHr
MOVR4R0r
SETB01Hr
YMOVAR4；LED倒计时显示r
MOVB10r
DIVABr
MOBDPTRLEDMAPr
MOVCAADPTRr
MOVP1Ar
MOVABr
MOVCAADPTRr
MOVP0Ar
LEDMAPDBC0HF9HA4HB0H99H92H82HF8H80H90Hr
JNB00HWAIT；判断是否要计数车流量r
JBP33WAIT；判断是否有车经过r
WAITJNBTF0WAIT；50ms一次扫描完毕r
SJMPSTARTr
INT1JNB01HU；判断车向r
INCR5r
UINCR6r
RETIr
INT0SETBP34；中断服务子程序，闯红灯或紧停按键r
JBP37r
LCALLDELAYr
CLRP34r
RETIr
DATAMOVAR6；车流量数据处理及红绿灯时间调整r
MOVBR0r
MULABr
MOVR6Ar
MOVAR5r
MOVBR1r
MULABr
MOVB10r
MULABr
MOVBR6r
DIVABr
CJNZA7M1r
M2MOVR220r
MOVR140r
SJMPOUTr
M1JBCM2r
CJNZA15N1r
N2MOVR030r
MOVR130r
SJMPOUTr
N1JBCN2r
MOr