Using manual lens on Canon EOS M

Hi
I have just received the 7Artisans 7.5mm f2.8 for canon eos M. very pleased with the build quality. how do I get it to work? I have set it to AV,I pressed the shutter and it does not fire, so I tried it with M, same result. I did try it with SV, nothing. I am a bit worried that its either me or the lens is duff.
Can anyone help me with this
Ron
I have just received the 7Artisans 7.5mm f2.8 for canon eos M. very pleased with the build quality. how do I get it to work? I have set it to AV,I pressed the shutter and it does not fire, so I tried it with M, same result. I did try it with SV, nothing. I am a bit worried that its either me or the lens is duff.
Can anyone help me with this
Ron