07-03-2017, 03:05
When I wrote the previous post I had not read yet the post from Zdenek. And yes, he touched into the problem. This is why that I said that assign a fixed IP to the WiFi module is a good procedure.
It seems that the ESP8266 modules store the last IP where they have been connected the last time, and at each attempt to reconnect, first they try to use the same IP. On some routers, if the request IP address is already used, they just refuse the connection, and the DHCP just do nothing, making that the WiFi module will not be able to reconnect. Those are the cases where pressing the Meduino RESET button is needed.
Perhaps someone with a better knowledge of networks, can explain with better words, what I'm trying to say.
It seems that the ESP8266 modules store the last IP where they have been connected the last time, and at each attempt to reconnect, first they try to use the same IP. On some routers, if the request IP address is already used, they just refuse the connection, and the DHCP just do nothing, making that the WiFi module will not be able to reconnect. Those are the cases where pressing the Meduino RESET button is needed.
Perhaps someone with a better knowledge of networks, can explain with better words, what I'm trying to say.