Please guide me, what is = for? Why not just use =

我不是袋鼠

Please guide me, what is = for? Why not just use = [Copy link]

qwqwqw2088

A compound assignment operator

|= bitwise logical OR assignment

littleshrimp

qwqwqw2088 posted on 2021-8-29 17:21 A type of compound assignment operator |= bitwise logical or assignment

|=0x01, only change BIT0 to 1, 0x02 only change BIT1...

qwqwqw2088

littleshrimp posted on 2021-8-29 17:27 |=0x01, only change BIT0 to 1, 0x02 only change BIT1...

This bit operation is commonly used in 430 microcontrollers

qwqwqw2088

MSP430 MCU general I/O port settings sharing

https://en.eeworld.com/bbs/thread-1144655-1-1.html

w494143467

First, set the specified bit to 1, and then assign a value. That is, PX = PX | 0x01, and finally the 0th bit of PX will be assigned a value of 1;