LED light flashing mode

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LED light flashing mode [Copy link]

Now I have 8 LEDs, controlled by 8 I/Os of 51 MCU. My boss asked me to flash 200 modes. If I write a function to implement each mode, I need 200 functions. My boss said 200 functions are too big. He wants to use several functions like movable type printing to realize these 200 modes through different combinations. I am so confused. Does anyone have any good way to achieve this? ? ?

dzwwk

You can try to write a few complete functions first, and then you will know which ones can be merged or combined. Practice makes perfect.

0442323

What the above person said is very correct. Just like image display, we first consider how to display points, then lines, and then surfaces. Then it is a question of combination.

mfxbb

In fact, it is a function: void LED (char num); // num is the number of LEDs 0-7, whichever one you want to light up. As for how to use this function to achieve 200 modes, it depends on the so-called "mode" requirements. 200 modes? No specific instructions? The simplest one is: 2 to the eighth power is 256, which is binary display, adding 1 each time, so it can be satisfied.

yezhengmin

Can be implemented with case

m200200

It's not a big deal! One function can handle all 255 types. void LED(byte num) {byte i; POTA=num; } num is a byte in binary, representing the output of 8 outputs, 1 is high level, 0 is low level, how to combine it is up to you to think about it! ~~

wuzhouze

It would be even more perfect if we can control the duration of each LED lighting: void LED(byte num, byte timeperiod) { }

13802373669

Therefore, if the demand is not clear, the case cannot be done. If the question is vague, there will be many answers.

Alan1987

The flashing pattern of 8 lights can be 1237 for 3 seconds, 2468 for 3 seconds, or from 1 to 8, or from 8 to 1, and so on. Even if you put 200 flashing patterns into one function, you still have to write 200 patterns in the end.

kerode

Only when you have clear requirements can you do things. Since you need 200 kinds of things, and they have nothing in common, you have to write 200 kinds. It is not difficult to do things without rules, but it is annoying.

zgl7903

Quote from Shuiyan on the 7th floor: So, if the demand is not clear, the case cannot be done. If the question is vague, there will be many answers.

liuchangjun1981

There is a pattern! If you light up from 0 to FFH, there are 255 modes. If you add the time variable, it will be infinite.

charlin

I think I should end this post.

hupl

I think your design should find out the commonalities of these LEDs, and how to simplify your design. Through these commonalities and the optimal parameters, you can control them. Think about it yourself.

lbf_78

It's difficult!

qingyin

There are 8 functions that have delays, settings, and numbers.

dnvtaje

There is also a loop that is put into it one by one

神的召唤啊

The problem has been solved. void light (UINT pin1, UINT pin2, UINT pin3, UINT pin4, UINT pin5, UINT pin6, UINT pin7, UINT pin8) can be represented directly by the pin number. There is no need to use the pin as a parameter directly, such as P1_6, assigning 6 to pin6