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Iam using ModelSim pe student edition to simulate vhdl code.
but shows an error as," Empty source files "
what to do ?
I only started using ModelSim, not well familiarized.
Hi, i solved the problem. it was with the wrong programming. now the circuit responds, but some times the 7 segment display gets stuck at some point, why?
okey,
I tried my work in hardware. [ used my code ], but when the counter decrements, sometimes it gets stuck at any arbitrary value { wonderfully, they are multiples of ten - 20,40,50} . If i reset the circuit, then mostly it is there in that previous part where it got stuck. why?
i had run the simulation. when i pressed, 'O' at train OTX1 had send , but no further process. motor doesn't runs
to run the simulation, i had changed the name of receiver to ATX2.
as you said, problem may be in the program.
Re: How to use pic microcontrollers
what the data protection and code protection in the configuration word mean?
also what is ID1 ID2 ?
when programming, these are shown.
what is the format of data send from GSM?.
You had given a delimitter \r\n. Is the message send from GSM ends with the same \r\n?
also u initialized RX, but why you store the received data to &RX?
UART1_Read_Text(&RX,"\r\n",6);
this instruction will check for a data that ends with \r\n and...
Re: How to use pic microcontrollers
my guide said that it may due to, the crystal may not work properly. so advised me to test it with a CRO . should i directly connect the CRO probes to crystal?
what is the use of pullup and pull down resistor?
Re: How to use pic microcontrollers
device : P16F877a
frequency: 8 MHz
Build type : release
Debugger: software
oscillator selection : HS
Watch dog timer: disabled
Power on timer: disabled
Brownout reset: enabled
low voltage in circuit serial program : disabled
Data EEPROM memory code...
I am trying to locate the train using GPS, so we have two locations first some km before the fixed point gate and a point after the gate, at this second point i sends again a signal to the gate to open the gate.
I think that , we could use an RF ID to recognize the second point from where gate...
yes, one more modification- on sending back the fail signal, the train should slow down to stop, If P is the reply , then train passes without any interruption.
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