I brought an Imp-001 into work today to show a colleague. I have been unable to connect it to the WiFi network and the situation is pretty strange.
The unit blinks up fine at home and will connect to the WiFi hotspot on my phone, and my work laptop, but it cannot connect at all to a network we have specifically for devices that don’t have a screen. I can connect to this network using my phone with the supplied password, but the imp just sits there flashing the red light. 1-long 2-short, which is code for I cannot see the network you told me to connect to. I have double and triple checked the SSID and password and made sure that the device and blinkup are working. I have even connected to an unknown secure network nearby and get the 1-long 3-short sequence so it found that network.
I had the IT folks check to see if they could see the device trying to connect, which they could not, or if there was an allowed or disallowed list of MAC addresses which might prevent it connecting. Since we connect the products we make to this network, and they are always new, there would be no point setting up authorization by MAC address since they change daily. According to IT there is nothing special about the WiFi configuration.
The only thing I have left that might explain the issue is if the IMP cannot connect to the 2.4GHz network if the AP is also broadcasting on 5GHz too? Pretty sure this is an AP problem, but I don’t know what else to ask the IT guys to check. My phone and other devices (which are only 2.4G) connect fine to this SSID.
Suggestions from any WiFi gurus?