SLEEPCMD OSC PD to find syntactic explanations

sleepcmd &= ~osc_pd;Right-click the OSC PD and go to definition of'osc_pd'：

See all are defined bv(2);

Let's continue to look at the definition of bv(n) in this way:

Seeing that the definition is 1<<(n);

The same sleepcmd can be seen to be SFR (Special Function Register).

Then it's time to change:

sleepcmd &= ~osc_pd;i.e. sleepcmd &= bv(2); i.e. sleepcmd &= (1<<2);

i.e. sleepcmd &= (0x04); This is to reset bit2 in sleepcmd (bit0 bit7) (does not affect other bits).

sleepcmd |= 0x04;It is to set bit2 in sleepcmd(bit0 bit7) (does not affect other bits).

But you know by looking up the table.

sleepcmd (0xbe) –sleep-mode control command：

bit | name | reset r/w | description

2 | 1 | r/w | reserved. always write as 1

So this bit is a reserved bit, and then I don't understand: I don't know what this reserved bit reset means......

Ask God for an answer.

cc is cc, when sending an email, for example, you want to send an email to a friend, but at the same time you want another friend to see the content of your email to the first friend, in this way, you can cc when you send it, which is equivalent to two people receiving the same email, the content is the same, that is, in the first part one is send to (send) and one is cc (cc).

cmd opens another Windows Command Interpreter window.

Enter cmd on the run to enter the command prompt window.

1. rem, the content of the comment (can not appear redirection symbol and pipe symbol) 2, : label, the content of the comment (can be used as the execution content of the section below the label) 3, :: jump mark (the first colon can also be followed by any non-alphanumeric character) 4, % comment content % (can be used as an interline comment, can not appear redirection symbol and pipe symbol) cmd use skills.

1. Enter help to view the help.

2. Tab key, auto-completion.

3. Up and down arrow keys to view historical commands.

The cmd annotation is in the form of:

1. :: Comment content (the first colon can also be followed by any non-alphanumeric character) 2. rem, comment content (no redirection symbol and pipe symbol can appear) 3, % comment content % (can be used as an interline comment, no redirection symbol and pipe symbol) 4, : label, comment content (can be used as the execution content of the lower segment of the label).

Annotation symbol 1: ": A double colon in English.

Annotation symbol 2: "%Content%"; Percent signs.

If you check whether there should be a field in your message table that is not allowed to be null, but you have not assigned a value to it in this insert statement, it is recommended that you redebug your SQL statement.

If there are spaces in the file name, put double quotation marks around the file name.

Hello, do you want to rename? You can use batch processing, which is much faster than the method you send the connection.

The error occurred because there was a space in the file name, and the file name needed to be enclosed with "".

Delay 10 seconds. How many seconds do you need to change it yourself.。。

ping localhost -n 10 > nul

If there is a space in the file path, you need to enclose the path in quotation marks, otherwise the space will be followed by another parameter.

Add the path to the path, or put the flash package under windows, the path should not be angle brackets, adb sideload