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May ban oi? Minh co chuong trinh ngat Rb0 doc encoder+ hien thi led 7 doan. su dung qêut led ok roi. Nhung muon luu gia tri vào eefrom Pic. Nhung khi ghi vao eefrom thi led no cu nhay 1 phat roi hien lai tu dau. Ko hieu noi muon lam led ko nhay nua ma van nap vao eprom thi lam sao. May bac chi giao dum nha. Minh xap nop roi mong may anh chi chi cho.
/* ---------- khai bao ngat ------------*/
ext_int_edge(h_to_l);// khai bao suon ngat
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256); //khai bao timer0 bo dinh thoi, ty le chia tan 64
enable_interrupts(int_ext);
enable_interrupts(int_timer0);//cho phep ngat timer0
enable_interrupts(global);
set_timer0(178);// T_dinhthi = 64*(256 - 100)*0.5us = 5000us
/* ------ bat dau chuong trinh chinh---------- */
while(true)
{
while(!erro)// khiem tra co loi ko
{
tach_lay_so(xung_dem);
for(i=0;i<3;i++)
{
output_a(255);// tat tat ca led
IF(thoigian_ghi==30)// muon 1 thoai gian nao di ghi vao eprom.
{
thoigian_ghi=0;
disable_interrupts(GLOBAL); // all interrupts OFF
write_eeprom(add_donvi,led0);// ghi vao eprom
write_eeprom(add_chuc,led1);
write_eeprom(add_tram,led2);
enable_interrupts(GLOBAL); // all interrupts OFF
enable_interrupts(INT_EXT); //
enable_interrupts(INT_TIMER0); //
}
Nhung ghi la led no chop cai roi moi sang, ghi nua la chop nua.
anh em chi giao nha. Thanks
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