Add FFI module example.
Add FFI module example.

MrSurly/micropython-esp32,omtinez/micropython,ericsnowcurrently/micropython,adamkh/micropython,ryannathans/micropython,drrk/micropython,KISSMonX/micropython,blazewicz/micropython,warner83/micropython,vitiral/micropython,swegener/micropython,pramasoul/micropython,TDAbboud/micropython,tobbad/micropython,kerneltask/micropython,orionrobots/micropython,dinau/micropython,KISSMonX/micropython,skybird6672/micropython,paul-xxx/micropython,suda/micropython,dmazzella/micropython,ahotam/micropython,hiway/micropython,dxxb/micropython,cnoviello/micropython,KISSMonX/micropython,lowRISC/micropython,utopiaprince/micropython,ChuckM/micropython,ericsnowcurrently/micropython,TDAbboud/micropython,cnoviello/micropython,stonegithubs/micropython,tuc-osg/micropython,hiway/micropython,toolmacher/micropython,pfalcon/micropython,alex-robbins/micropython,adafruit/circuitpython,AriZuu/micropython,ruffy91/micropython,cnoviello/micropython,ericsnowcurrently/micropython,omtinez/micropython,bvernoux/micropython,chrisdearman/micropython,infinnovation/micropython,slzatz/micropython,kostyll/micropython,paul-xxx/micropython,omtinez/micropython,feilongfl/micropython,heisewangluo/micropython,ceramos/micropython,ernesto-g/micropython,AriZuu/micropython,pozetroninc/micropython,lowRISC/micropython,methoxid/micropystat,tuc-osg/micropython,stonegithubs/micropython,cloudformdesign/micropython,infinnovation/micropython,kostyll/micropython,orionrobots/micropython,Peetz0r/micropython-esp32,misterdanb/micropython,utopiaprince/micropython,pramasoul/micropython,martinribelotta/micropython,vriera/micropython,jimkmc/micropython,oopy/micropython,adafruit/micropython,ceramos/micropython,PappaPeppar/micropython,blazewicz/micropython,slzatz/micropython,jmarcelino/pycom-micropython,lbattraw/micropython,ChuckM/micropython,toolmacher/micropython,xyb/micropython,swegener/micropython,ahotam/micropython,bvernoux/micropython,lbattraw/micropython,suda/micropython,slzatz/micropython,jmarcelino/pycom-micropython,micropython/micropython-esp32,feilongfl/micropython,ceramos/micropython,kerneltask/micropython,pozetroninc/micropython,tuc-osg/micropython,alex-robbins/micropython,alex-march/micropython,mpalomer/micropython,supergis/micropython,ryannathans/micropython,praemdonck/micropython,danicampora/micropython,MrSurly/micropython-esp32,trezor/micropython,tralamazza/micropython,ernesto-g/micropython,danicampora/micropython,orionrobots/micropython,omtinez/micropython,selste/micropython,vitiral/micropython,misterdanb/micropython,MrSurly/micropython,ryannathans/micropython,hosaka/micropython,drrk/micropython,alex-march/micropython,trezor/micropython,praemdonck/micropython,KISSMonX/micropython,mhoffma/micropython,kerneltask/micropython,oopy/micropython,alex-march/micropython,pfalcon/micropython,emfcamp/micropython,lbattraw/micropython,dinau/micropython,matthewelse/micropython,infinnovation/micropython,mhoffma/micropython,neilh10/micropython,EcmaXp/micropython,SHA2017-badge/micropython-esp32,rubencabrera/micropython,galenhz/micropython,martinribelotta/micropython,torwag/micropython,misterdanb/micropython,xhat/micropython,blmorris/micropython,ernesto-g/micropython,tralamazza/micropython,praemdonck/micropython,alex-robbins/micropython,pfalcon/micropython,hiway/micropython,dxxb/micropython,warner83/micropython,noahchense/micropython,noahchense/micropython,xyb/micropython,kostyll/micropython,blmorris/micropython,turbinenreiter/micropython,puuu/micropython,cloudformdesign/micropython,SungEun-Steve-Kim/test-mp,infinnovation/micropython,dxxb/micropython,vriera/micropython,mgyenik/micropython,cnoviello/micropython,suda/micropython,HenrikSolver/micropython,alex-march/micropython,micropython/micropython-esp32,skybird6672/micropython,heisewangluo/micropython,mpalomer/micropython,heisewangluo/micropython,turbinenreiter/micropython,blmorris/micropython,adamkh/micropython,xuxiaoxin/micropython,jlillest/micropython,ChuckM/micropython,firstval/micropython,turbinenreiter/micropython,jlillest/micropython,ceramos/micropython,martinribelotta/micropython,torwag/micropython,omtinez/micropython,dmazzella/micropython,adafruit/circuitpython,MrSurly/micropython,turbinenreiter/micropython,heisewangluo/micropython,neilh10/micropython,dhylands/micropython,KISSMonX/micropython,dinau/micropython,xyb/micropython,xuxiaoxin/micropython,lowRISC/micropython,dhylands/micropython,pramasoul/micropython,Timmenem/micropython,swegener/micropython,SHA2017-badge/micropython-esp32,skybird6672/micropython,noahwilliamsson/micropython,toolmacher/micropython,drrk/micropython,TDAbboud/micropython,ganshun666/micropython,ruffy91/micropython,TDAbboud/micropython,danicampora/micropython,tdautc19841202/micropython,chrisdearman/micropython,AriZuu/micropython,blmorris/micropython,noahchense/micropython,redbear/micropython,galenhz/micropython,EcmaXp/micropython,stonegithubs/micropython,warner83/micropython,tobbad/micropython,firstval/micropython,aethaniel/micropython,emfcamp/micropython,Timmenem/micropython,HenrikSolver/micropython,blazewicz/micropython,Vogtinator/micropython,jmarcelino/pycom-micropython,redbear/micropython,ericsnowcurrently/micropython,utopiaprince/micropython,henriknelson/micropython,EcmaXp/micropython,puuu/micropython,adafruit/circuitpython,xhat/micropython,slzatz/micropython,feilongfl/micropython,mhoffma/micropython,praemdonck/micropython,mianos/micropython,aethaniel/micropython,ceramos/micropython,warner83/micropython,neilh10/micropython,selste/micropython,orionrobots/micropython,pozetroninc/micropython,dinau/micropython,praemdonck/micropython,blazewicz/micropython,noahchense/micropython,neilh10/micropython,Timmenem/micropython,cloudformdesign/micropython,xyb/micropython,adafruit/micropython,martinribelotta/micropython,cwyark/micropython,adamkh/micropython,Vogtinator/micropython,alex-march/micropython,mgyenik/micropython,PappaPeppar/micropython,matthewelse/micropython,stonegithubs/micropython,oopy/micropython,Vogtinator/micropython,ganshun666/micropython,tobbad/micropython,ChuckM/micropython,Vogtinator/micropython,mhoffma/micropython,cwyark/micropython,hosaka/micropython,xhat/micropython,skybird6672/micropython,hosaka/micropython,lbattraw/micropython,trezor/micropython,PappaPeppar/micropython,lbattraw/micropython,selste/micropython,micropython/micropython-esp32,mgyenik/micropython,EcmaXp/micropython,EcmaXp/micropython,feilongfl/micropython,supergis/micropython,aethaniel/micropython,henriknelson/micropython,xuxiaoxin/micropython,methoxid/micropystat,tdautc19841202/micropython,ernesto-g/micropython,cloudformdesign/micropython,mgyenik/micropython,jlillest/micropython,deshipu/micropython,noahwilliamsson/micropython,adafruit/circuitpython,jimkmc/micropython,alex-robbins/micropython,ganshun666/micropython,rubencabrera/micropython,suda/micropython,ryannathans/micropython,TDAbboud/micropython,mianos/micropython,matthewelse/micropython,SHA2017-badge/micropython-esp32,pfalcon/micropython,matthewelse/micropython,supergis/micropython,tdautc19841202/micropython,SungEun-Steve-Kim/test-mp,bvernoux/micropython,emfcamp/micropython,ruffy91/micropython,ahotam/micropython,jmarcelino/pycom-micropython,noahchense/micropython,SHA2017-badge/micropython-esp32,puuu/micropython,aethaniel/micropython,trezor/micropython,adafruit/micropython,Peetz0r/micropython-esp32,vitiral/micropython,Timmenem/micropython,adamkh/micropython,Peetz0r/micropython-esp32,deshipu/micropython,mpalomer/micropython,tralamazza/micropython,aitjcize/micropython,utopiaprince/micropython,misterdanb/micropython,mhoffma/micropython,toolmacher/micropython,mianos/micropython,stonegithubs/micropython,SungEun-Steve-Kim/test-mp,ruffy91/micropython,SHA2017-badge/micropython-esp32,vriera/micropython,redbear/micropython,tdautc19841202/micropython,dxxb/micropython,MrSurly/micropython,oopy/micropython,deshipu/micropython,dmazzella/micropython,dhylands/micropython,danicampora/micropython,HenrikSolver/micropython,feilongfl/micropython,micropython/micropython-esp32,ahotam/micropython,jlillest/micropython,slzatz/micropython,henriknelson/micropython,lowRISC/micropython,hiway/micropython,puuu/micropython,kerneltask/micropython,cwyark/micropython,noahwilliamsson/micropython,danicampora/micropython,ericsnowcurrently/micropython,deshipu/micropython,adafruit/micropython,skybird6672/micropython,xuxiaoxin/micropython,pozetroninc/micropython,Peetz0r/micropython-esp32,deshipu/micropython,paul-xxx/micropython,ruffy91/micropython,firstval/micropython,cwyark/micropython,jimkmc/micropython,infinnovation/micropython,mpalomer/micropython,warner83/micropython,utopiaprince/micropython,firstval/micropython,rubencabrera/micropython,dinau/micropython,blazewicz/micropython,puuu/micropython,jimkmc/micropython,vitiral/micropython,cnoviello/micropython,redbear/micropython,HenrikSolver/micropython,blmorris/micropython,pramasoul/micropython,supergis/micropython,jmarcelino/pycom-micropython,MrSurly/micropython-esp32,heisewangluo/micropython,paul-xxx/micropython,matthewelse/micropython,matthewelse/micropython,cwyark/micropython,turbinenreiter/micropython,mgyenik/micropython,chrisdearman/micropython,cloudformdesign/micropython,tobbad/micropython,ahotam/micropython,mpalomer/micropython,swegener/micropython,ganshun666/micropython,jlillest/micropython,adamkh/micropython,aitjcize/micropython,noahwilliamsson/micropython,tobbad/micropython,neilh10/micropython,martinribelotta/micropython,hosaka/micropython,galenhz/micropython,hiway/micropython,hosaka/micropython,rubencabrera/micropython,torwag/micropython,PappaPeppar/micropython,kostyll/micropython,MrSurly/micropython-esp32,bvernoux/micropython,emfcamp/micropython,supergis/micropython,adafruit/micropython,AriZuu/micropython,oopy/micropython,pfalcon/micropython,xhat/micropython,misterdanb/micropython,redbear/micropython,henriknelson/micropython,kerneltask/micropython,drrk/micropython,orionrobots/micropython,tuc-osg/micropython,vriera/micropython,selste/micropython,galenhz/micropython,mianos/micropython,aitjcize/micropython,micropython/micropython-esp32,xyb/micropython,dxxb/micropython,kostyll/micropython,mianos/micropython,suda/micropython,ernesto-g/micropython,Timmenem/micropython,ryannathans/micropython,dmazzella/micropython,swegener/micropython,tdautc19841202/micropython,lowRISC/micropython,adafruit/circuitpython,henriknelson/micropython,MrSurly/micropython,aitjcize/micropython,pozetroninc/micropython,xhat/micropython,firstval/micropython,ganshun666/micropython,MrSurly/micropython-esp32,trezor/micropython,xuxiaoxin/micropython,MrSurly/micropython,methoxid/micropystat,Vogtinator/micropython,HenrikSolver/micropython,torwag/micropython,methoxid/micropystat,galenhz/micropython,jimkmc/micropython,chrisdearman/micropython,ChuckM/micropython,bvernoux/micropython,Peetz0r/micropython-esp32,torwag/micropython,SungEun-Steve-Kim/test-mp,tralamazza/micropython,PappaPeppar/micropython,paul-xxx/micropython,aethaniel/micropython,chrisdearman/micropython,drrk/micropython,pramasoul/micropython,selste/micropython,dhylands/micropython,dhylands/micropython,methoxid/micropystat,alex-robbins/micropython,rubencabrera/micropython,vriera/micropython,adafruit/circuitpython,emfcamp/micropython,vitiral/micropython,toolmacher/micropython,SungEun-Steve-Kim/test-mp,tuc-osg/micropython,AriZuu/micropython,noahwilliamsson/micropython