When using the simulator, is the program running the program in the simulator or the program in the microcontroller on the circuit board?

EEW2018

When using the simulator, is the program running the program in the simulator or the program in the microcontroller on the circuit board? [Copy link]

When using the simulator, is the program running the program in the simulator or the program in the microcontroller on the circuit board?

qwqwqw2088

It should be said that the successfully simulated program can be directly downloaded to the circuit board and run

EEW2018

qwqwqw2088 posted on 2020-1-15 07:55 It should be said that the successfully simulated program can be directly downloaded to the circuit board for running

Thank you very much. Do you mean that the successfully simulated program is downloaded to the MCU on the circuit board and run? What is the difference between that and directly running the program in the MCU?

qwqwqw2088

EEW2018 posted on 2020-1-15 08:12 Thank you very much. Do you mean that the successfully simulated program is downloaded to the microcontroller on the circuit board and run? What is the difference between running the program in the microcontroller directly...

It can run normally in the simulation software and there is no difference when it is downloaded to the microcontroller.

However, sometimes, due to the unreasonable design of peripheral hardware,

For example, the I/O driving capability of the general emulator is greater than that of the real CPU. The emulation software or emulator runs normally, but after the official programming, the CPU fails to reliably drive the hardware. This is a hardware problem, but the procedure is the same.

dcexpert

There are online simulation and software simulation. Online simulation requires the simulator to be downloaded to the chip to run, while software simulation does not require hardware.

chunyang

The emulator runs the program loaded into the emulation system. The existence of the program in the emulation target is irrelevant, unless the emulation target itself is the emulator.

EEW2018

dcexpert posted on 2020-1-15 09:28 There are online simulation and software simulation. Online simulation requires the simulator to be downloaded to the chip to run, while software simulation does not require hardware.

Thank you very much. It seems I was confused. According to what you said, there are two types of emulators.

One is to directly simulate the simulation running on the microcontroller in KEIL UVISION on the computer

The other is to download the program to the MCU of the circuit board for simulation of running and debugging.

Is it right?

However, for the former, how to simulate the various peripheral inputs and outputs of the microcontroller?

For the latter, how can the debugging software on the computer obtain information such as peripheral inputs in the microcontroller?

dcexpert

EEW2018 posted on 2020-1-15 13:50 Thank you very much. It seems that I was confused. According to what you said, there are two types of emulators. One is the KEIL UVISION on the computer ...

Software simulation can only simulate some peripheral functions, such as timer, UART, etc. The simulation effect of ADC, I2C, etc. is not good.

During simulation, you can set breakpoints in the IDE and view variables and registers.

EEW2018

dcexpert posted on 2020-1-15 09:28 There are online simulation and software simulation. Online simulation requires the simulator to be downloaded to the chip to run, while software simulation does not require hardware.

Thank you very much. I have another question. What does it mean to download simulation software to a microcontroller? Isn't the program downloaded to the microcontroller the program we wrote?

EEW2020

A simulated machine is a copy of another machine, such as a single-chip microcomputer; in this case, there is no need for a real machine. It is the same as using a stand-in in a movie.

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