Based on the MSP430 Smart Security System-project experience

Strictly speaking, this should be my first project in the true sense. In this production process, I encountered many problems.ProgramI'm delighted that debugging was successful, and I was troubled by some unreasonable hardware design. After all, I finally came alive.

After the basic functions are implemented, I think it is necessary to summarize them. Here are some of my experiences!

1. First of all, a deep understanding is that when you try to build your own hardware environment, that is, to make a circuit board, with the familiar knowledge of the model and electrical modules that we usually get bored, you will understand how important this knowledge is. In a typical example, when debugging the infrared module, we simply think that, as long as the hand blocks it, it is natural to trigger a level flip, but it is far from that simple. The proper Resistance Selection here will determine whether the voltage variation of the descent edge is sufficient. Therefore, the infrared block can be used independently, but you have to modify it as soon as it is put into the system!

2. Next, the power supply. The original idea was very simple: USB power supply! It's easy, so I didn't hesitate to choose USB to provide the driver power for the system. But at the end of the project, there was no USB interface next to it, so can you still use it, as a result, we have learned that the project we are working on is always user-oriented, and the power supply must be done independently so that it can be called a system.

3. The next step is the software part. We should have no system contact with the MSP430 film, so we still don't know much about it. For example, there is a blind spot in the system clock settings, the program first initializes the clock settings, and then sets the clock again in the GSM Short Message sending. The key is that this setting uses the equal sign directly, causing reset of the clock system, after that, you can change it to a bit. Before that, the teacher told us that you must perform a bit operation. This is a loss. It took a long time to get the result!

4. In the end, you may not have considered it comprehensively. For example, if you have not set the text message number to be changeable, it is irrelevant. After all, it is not a product. Just make a slight modification. In fact, there are a lot of things to summarize, but let's get there first. Prepare for the next project and broadcast school!

The last one is provided. Although sorry for the audience !!!