基于51单片机函数信号发生器设计(4)

机电0810班郝兴毕业设计

uchar qian,bai,shi,ge; qian=date/1000; bai=date/100; shi=date/10; ge=date;

write_com(0x80+0x42); write_data(0x30+qian); write_data(0x30+bai); write_data(0x30+shi); write_data(0x30+ge); write_data(0x48); write_data(0x5a); }

void xsf() //显示频率 {

if(s1num==1) {

fre=(1000/(9+3*ys)); write_f(fre); }

if(s1num==2) {

- 17 -

机电0810班郝兴毕业设计

fre=(100000/(3*ys)); write_f(fre); }

if(s1num==3) {

fre=(1000/(15+3*ys)); write_f(fre); } }

void keyscanf() { d=0; if(s1==0) {

delay(5); if(s1==0) {

while(!s1); s1num++; if(s1num==1) {

- 18 -

机电0810班郝兴毕业设计

ys=0;

write_com(0x80+0x05);

write_data(0x73); //写sine: write_data(0x69); write_data(0x6e); write_data(0x65); write_data(0x20); write_data(0x20); }

if(s1num==2) {

ys=10;

write_com(0x80+0x05);

write_data(0x73); // write_data(0x71); write_data(0x75); write_data(0x61); write_data(0x72); write_data(0x65); } if(s1num==3) {

- 19 -

写squrae 机电0810班郝兴毕业设计

ys=0;

write_com(0x80+0x05); //train write_data(0x74); write_data(0x72); write_data(0x61); write_data(0x69); write_data(0x6e); write_data(0x20); }

if(s1num==4) {

s1num=0; P1=0;

write_com(0x80+0x05); write_data(0x20); write_data(0x20); write_data(0x20); write_data(0x20); write_data(0x20); write_data(0x20); write_com(0x80+0x42); write_data(0x20);

- 20 -

机电0810班郝兴毕业设计

write_data(0x20); write_data(0x20); write_data(0x20); write_data(0x20); write_data(0x20); } } } if(s2==0) {

delay(5); if(s2==0) {

while(!s2); ys++; } } if(s3==0) {

delay(5); if(s3==0) {

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