Hall speed why may conflict with DHT11 temperature humidity measurement?-CodePudding

As title, hall element speed may conflict with DHT11 using interrupt

CodePudding user response:

Read DHT11 high demands on time, I try close while reading DHT11 interrupt?

CodePudding user response:

I'm in the beginning and end of DHT11 function respectively joined ET1=0 and ET1=1, and will not solve the problem

CodePudding user response:

refer to the second floor weixin_44976699 response:

me in the beginning and end of DHT11 function respectively joined ET1=0 and ET1=1, is not the solution

Program speed and only read only DHT11 is no problem, together have a problem is, the original poster to describe the phenomenon of conflict,

CodePudding user response:

references a tree may reply: 3/f

Quote: refer to the second floor weixin_44976699 response:

I'm in the beginning and end of DHT11 function respectively joined ET1=0 and ET1=1, and will not solve the problem

Program speed and only read only DHT11 is no problem, together have a problem is, the original poster to describe the phenomenon of conflict,

DHT11 sensor from 51 down there are data, normal should be 0

CodePudding user response:

High frequency interrupt upset DHT11 sequence,

CodePudding user response:

reference 4 floor weixin_44976699 response:

dht11 sensor from 51 down there are data, normal should be 0

Who's the data? Calculate the rotational speed, or read DHT11 data? If it is DHT11 data, the great probability is DHT11 operation sequence is wrong,