Excuse me my STM32L478RG by one sensor, connected to the sensor pin grounding, on which is more electricity?

CodePudding user response:

Grounded and connected to conform to the sensor's PIN feet connection, and its corresponding internal circuit matching, can meet the requirements! Some of the sensor must be connected to pull resistance

CodePudding user response:

reference 1st floor yangzhibing001 response:

grounded and connected to conform to the sensor's PIN feet connection, and its corresponding internal circuit matching, can meet the requirements! Some of the sensor must be connected to pull resistance

This I know, I want to ask such as switch amount this sensor, probe after pressing down is equivalent to a broken circuit links up and press down time for single chip microcomputer detect 0 level power or a high level of electricity?

CodePudding user response:

Should be ok, if have to distinguish, personal feel you MCU PIN is low, the detection of high level or rise along the compare save electricity; Because when reading the IO are input PIN, is your external high level can form a power circuit

CodePudding user response:

reference yangzhibing001 reply: 3/f

should be ok, if you don't want to distinguish between, people think you MCU PIN is low, the detection of high level or rise along the compare save electricity; Because when reading the IO are input PIN, is your external high level can form a loop power consumption

Ok, thank you

CodePudding user response:

See sensor most of the time is on or off the decision, if not serious don't pull up and down more save electricity,