Make implementation of hwtimer_spin() easier to read and understand
Make implementation of hwtimer_spin() easier to read and understand

fnack/RIOT,LudwigOrtmann/RIOT,katezilla/RIOT,bartfaizoltan/RIOT,tfar/RIOT,mtausig/RIOT,malosek/RIOT,Yonezawa-T2/RIOT,stevenj/RIOT,emmanuelsearch/RIOT,thomaseichinger/RIOT,rajma996/RIOT,1blankz7/RIOT,adrianghc/RIOT,watr-li/RIOT,kb2ma/RIOT,latsku/RIOT,openkosmosorg/RIOT,changbiao/RIOT,1blankz7/RIOT,koenning/RIOT,thiagohd/RIOT,sgso/RIOT,patkan/RIOT,locicontrols/RIOT,Osblouf/RIOT,thomaseichinger/RIOT,kb2ma/RIOT,kaspar030/RIOT,kaleb-himes/RIOT,Lotterleben/RIOT,nsol-nmsu/RIOT,binarylemon/RIOT,BytesGalore/RIOT,avmelnikoff/RIOT,d00616/RIOT,TobiasFredersdorf/RIOT,ks156/RIOT,phiros/RIOT,aeneby/RIOT,MonsterCode8000/RIOT,MohmadAyman/RIOT,FrancescoErmini/RIOT,Lotterleben/RIOT,rakendrathapa/RIOT,marcosalm/RIOT,dhruvvyas90/RIOT,biboc/RIOT,beurdouche/RIOT,smlng/RIOT,abkam07/RIOT,basilfx/RIOT,alex1818/RIOT,smlng/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,alignan/RIOT,arvindpdmn/RIOT,sgso/RIOT,haoyangyu/RIOT,DipSwitch/RIOT,openkosmosorg/RIOT,EmuxEvans/RIOT,dailab/RIOT,nsol-nmsu/RIOT,rakendrathapa/RIOT,jferreir/RIOT,binarylemon/RIOT,lazytech-org/RIOT,plushvoxel/RIOT,hamilton-mote/RIOT-OS,herrfz/RIOT-old,adrianghc/RIOT,centurysys/RIOT,MarkXYang/RIOT,asanka-code/RIOT,dkm/RIOT,msolters/RIOT,AnonMall/RIOT,abkam07/RIOT,miri64/RIOT,khhhh/RIOT,MohmadAyman/RIOT,ks156/RIOT,ximus/RIOT,ThanhVic/RIOT,gbarnett/RIOT,watr-li/RIOT,khhhh/RIOT,avmelnikoff/RIOT,beurdouche/RIOT,ntrtrung/RIOT,automote/RIOT,jhollister/RIOT,roberthartung/RIOT,brettswann/RIOT,kb2ma/RIOT,Darredevil/RIOT,JensErdmann/RIOT,neiljay/RIOT,rfswarm2/RIOT,lebrush/RIOT,BytesGalore/PetersRIOT,luciotorre/RIOT,Ell-i/RIOT,altairpearl/RIOT,Hyungsin/RIOT-OS,kYc0o/RIOT,fnack/RIOT,attdona/RIOT,herrfz/RIOT,BytesGalore/RIOT,altairpearl/RIOT,herrfz/RIOT,Lexandro92/RIOT-CoAP,patkan/RIOT,Hyungsin/RIOT-OS,immesys/RiSyn,robixnai/RIOT,kaleb-himes/RIOT,EmuxEvans/RIOT,jhollister/RIOT,Ell-i/RIOT,PSHIVANI/Riot-Code,syin2/RIOT,immesys/RiSyn,jremmert-phytec-iot/RIOT,LudwigKnuepfer/RIOT,changbiao/RIOT,syin2/RIOT,Yonezawa-T2/RIOT,patkan/RIOT,jhollister/RIOT,rousselk/RIOT,kYc0o/RIOT,ant9000/RIOT,haoyangyu/RIOT,d00616/RIOT,jbeyerstedt/RIOT-OTA-update,marcosalm/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,openkosmosorg/RIOT,chris-wood/RIOT,tfar/RIOT,yogo1212/RIOT,robixnai/RIOT,jfischer-phytec-iot/RIOT,watr-li/RIOT,benoit-canet/RIOT,fnack/RIOT,josephnoir/RIOT,tdautc19841202/RIOT,centurysys/RIOT,malosek/RIOT,EmuxEvans/RIOT,dkm/RIOT,dailab/RIOT,abkam07/RIOT,authmillenon/RIOT,d00616/RIOT,BytesGalore/RIOT,roberthartung/RIOT,openkosmosorg/RIOT,sumanpanchal/RIOT,herrfz/RIOT-old,l3nko/RIOT,abkam07/RIOT,gbarnett/RIOT,ant9000/RIOT,gbarnett/RIOT,EmuxEvans/RIOT,authmillenon/RIOT,OlegHahm/RIOT,BytesGalore/PetersRIOT,rfswarm2/RIOT,ThanhVic/RIOT,rfswarm2/RIOT,jremmert-phytec-iot/RIOT,zhuoshuguo/RIOT,d00616/RIOT,A-Paul/RIOT,lebrush/RIOT,wentaoshang/RIOT,koenning/RIOT,fnack/RIOT,nsol-nmsu/RIOT,haoyangyu/RIOT,rakendrathapa/RIOT,FrancescoErmini/RIOT,JensErdmann/RIOT,benoit-canet/RIOT,yogo1212/RIOT,alignan/RIOT,immesys/RiSyn,arvindpdmn/RIOT,rakendrathapa/RIOT,haoyangyu/RIOT,jferreir/RIOT,avmelnikoff/RIOT,ThanhVic/RIOT,BytesGalore/PetersRIOT,josephnoir/RIOT,katezilla/RIOT,PSHIVANI/Riot-Code,gautric/RIOT,kaspar030/RIOT,phiros/RIOT,rfswarm/RIOT,koenning/RIOT,ntrtrung/RIOT,locicontrols/RIOT,thiagohd/RIOT,d00616/RIOT,sumanpanchal/RIOT,sgso/RIOT,phiros/RIOT,asanka-code/RIOT,tdautc19841202/RIOT,A-Paul/RIOT,basilfx/RIOT,openkosmosorg/RIOT,luciotorre/RIOT,backenklee/RIOT,msolters/RIOT,herrfz/RIOT,latsku/RIOT,neumodisch/RIOT,ximus/RIOT,spium/IoT-RIOT,thiagohd/RIOT,dhruvvyas90/RIOT,LudwigOrtmann/RIOT,bartfaizoltan/RIOT,fnack/RIOT,thomaseichinger/RIOT,RIOT-OS/RIOT,ximus/RIOT,spium/IoT-RIOT,mtausig/RIOT,luciotorre/RIOT,kYc0o/RIOT,jferreir/RIOT,dkm/RIOT,yogo1212/RIOT,mtausig/RIOT,marcosalm/RIOT,1blankz7/RIOT,gebart/RIOT,RubikonAlpha/RIOT,changbiao/RIOT,zhuoshuguo/RIOT,AnonMall/RIOT,rousselk/RIOT,altairpearl/RIOT,wentaoshang/RIOT,gautric/RIOT,chris-wood/RIOT,ntrtrung/RIOT,abp719/RIOT,kerneltask/RIOT,daniel-k/RIOT,rfswarm/RIOT,dailab/RIOT,alignan/RIOT,msolters/RIOT,LudwigOrtmann/RIOT,LudwigKnuepfer/RIOT,jremmert-phytec-iot/RIOT,RIOT-OS/RIOT,l3nko/RIOT,adjih/RIOT,toonst/RIOT,kerneltask/RIOT,rfuentess/RIOT,FrancescoErmini/RIOT,jfischer-phytec-iot/RIOT,RubikonAlpha/RIOT,ros2/ros2_embedded_riot,patkan/RIOT,hamilton-mote/RIOT-OS,MohmadAyman/RIOT,arvindpdmn/RIOT,herrfz/RIOT-old,brettswann/RIOT,wentaoshang/RIOT,chris-wood/RIOT,jfischer-phytec-iot/RIOT,rajma996/RIOT,spium/IoT-RIOT,jbeyerstedt/RIOT-OTA-update,OTAkeys/RIOT,BytesGalore/RIOT,ros2/ros2_embedded_riot,kbumsik/RIOT,l3nko/RIOT,kushalsingh007/RIOT,kbumsik/RIOT,benoit-canet/RIOT,Lexandro92/RIOT-CoAP,mfrey/RIOT,rfswarm2/RIOT,latsku/RIOT,kaleb-himes/RIOT,immesys/RiSyn,RubikonAlpha/RIOT,Lotterleben/RIOT,RubikonAlpha/RIOT,gbarnett/RIOT,attdona/RIOT,alex1818/RIOT,plushvoxel/RIOT,RBartz/RIOT,marcosalm/RIOT,MonsterCode8000/RIOT,backenklee/RIOT,thiagohd/RIOT,kushalsingh007/RIOT,shady33/RIOT,gautric/RIOT,AnonMall/RIOT,kushalsingh007/RIOT,MonsterCode8000/RIOT,x3ro/RIOT,DipSwitch/RIOT,thomaseichinger/RIOT,marcosalm/RIOT,nsol-nmsu/RIOT,haoyangyu/RIOT,abp719/RIOT,locicontrols/RIOT,LudwigOrtmann/RIOT,lebrush/RIOT,robixnai/RIOT,basilfx/RIOT,authmillenon/RIOT,Hyungsin/RIOT-OS,msolters/RIOT,Osblouf/RIOT,lazytech-org/RIOT,automote/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,daniel-k/RIOT,PSHIVANI/Riot-Code,roberthartung/RIOT,zhuoshuguo/RIOT,rfswarm/RIOT,JensErdmann/RIOT,neumodisch/RIOT,patkan/RIOT,MohmadAyman/RIOT,Lotterleben/RIOT,kYc0o/RIOT,rajma996/RIOT,authmillenon/RIOT,Osblouf/RIOT,FrancescoErmini/RIOT,herrfz/RIOT,Lexandro92/RIOT-CoAP,rousselk/RIOT,luciotorre/RIOT,TobiasFredersdorf/RIOT,rousselk/RIOT,cladmi/RIOT,spium/IoT-RIOT,gebart/RIOT,TobiasFredersdorf/RIOT,MonsterCode8000/RIOT,watr-li/RIOT,centurysys/RIOT,adjih/RIOT,lebrush/RIOT,adrianghc/RIOT,kushalsingh007/RIOT,bartfaizoltan/RIOT,cladmi/RIOT,DipSwitch/RIOT,RubikonAlpha/RIOT,sumanpanchal/RIOT,alex1818/RIOT,avmelnikoff/RIOT,kbumsik/RIOT,josephnoir/RIOT,Lexandro92/RIOT-CoAP,stevenj/RIOT,alignan/RIOT,neumodisch/RIOT,hamilton-mote/RIOT-OS,spium/IoT-RIOT,BytesGalore/PetersRIOT,abp719/RIOT,khhhh/RIOT,toonst/RIOT,A-Paul/RIOT,openkosmosorg/RIOT,DipSwitch/RIOT,neiljay/RIOT,1blankz7/RIOT,basilfx/RIOT,alex1818/RIOT,toonst/RIOT,BytesGalore/RIOT,rfswarm2/RIOT,arvindpdmn/RIOT,dkm/RIOT,smlng/RIOT,asanka-code/RIOT,tfar/RIOT,dhruvvyas90/RIOT,Lotterleben/RIOT,daniel-k/RIOT,katezilla/RIOT,sgso/RIOT,tdautc19841202/RIOT,altairpearl/RIOT,RBartz/RIOT,LudwigOrtmann/RIOT,kYc0o/RIOT,brettswann/RIOT,AnonMall/RIOT,ximus/RIOT,immesys/RiSyn,bartfaizoltan/RIOT,yogo1212/RIOT,Darredevil/RIOT,AnonMall/RIOT,brettswann/RIOT,l3nko/RIOT,bartfaizoltan/RIOT,abp719/RIOT,kushalsingh007/RIOT,1blankz7/RIOT,asanka-code/RIOT,daniel-k/RIOT,tdautc19841202/RIOT,katezilla/RIOT,sgso/RIOT,Yonezawa-T2/RIOT,adrianghc/RIOT,smlng/RIOT,altairpearl/RIOT,gbarnett/RIOT,centurysys/RIOT,kaleb-himes/RIOT,nsol-nmsu/RIOT,l3nko/RIOT,biboc/RIOT,jremmert-phytec-iot/RIOT,gebart/RIOT,ThanhVic/RIOT,DipSwitch/RIOT,lazytech-org/RIOT,A-Paul/RIOT,wentaoshang/RIOT,ros2/ros2_embedded_riot,neumodisch/RIOT,smlng/RIOT,kaspar030/RIOT,arvindpdmn/RIOT,rfswarm2/RIOT,centurysys/RIOT,RubikonAlpha/RIOT,herrfz/RIOT,Josar/RIOT,robixnai/RIOT,Ell-i/RIOT,altairpearl/RIOT,basilfx/RIOT,josephnoir/RIOT,RIOT-OS/RIOT,ntrtrung/RIOT,gebart/RIOT,rajma996/RIOT,neiljay/RIOT,tdautc19841202/RIOT,mtausig/RIOT,rfswarm/RIOT,abp719/RIOT,msolters/RIOT,phiros/RIOT,jferreir/RIOT,plushvoxel/RIOT,abkam07/RIOT,shady33/RIOT,lazytech-org/RIOT,beurdouche/RIOT,binarylemon/RIOT,RBartz/RIOT,attdona/RIOT,mziegert/RIOT,dhruvvyas90/RIOT,jbeyerstedt/RIOT-OTA-update,jfischer-phytec-iot/RIOT,rajma996/RIOT,PSHIVANI/Riot-Code,beurdouche/RIOT,roberthartung/RIOT,stevenj/RIOT,cladmi/RIOT,Darredevil/RIOT,yogo1212/RIOT,biboc/RIOT,aeneby/RIOT,jferreir/RIOT,MarkXYang/RIOT,TobiasFredersdorf/RIOT,thiagohd/RIOT,kbumsik/RIOT,rfuentess/RIOT,automote/RIOT,Lotterleben/RIOT,Yonezawa-T2/RIOT,changbiao/RIOT,mfrey/RIOT,ntrtrung/RIOT,MarkXYang/RIOT,gbarnett/RIOT,miri64/RIOT,binarylemon/RIOT,BytesGalore/PetersRIOT,shady33/RIOT,robixnai/RIOT,plushvoxel/RIOT,Josar/RIOT,locicontrols/RIOT,ros2/ros2_embedded_riot,malosek/RIOT,rfuentess/RIOT,plushvoxel/RIOT,latsku/RIOT,brettswann/RIOT,asanka-code/RIOT,kb2ma/RIOT,MarkXYang/RIOT,Josar/RIOT,ThanhVic/RIOT,zhuoshuguo/RIOT,Osblouf/RIOT,tdautc19841202/RIOT,herrfz/RIOT,ks156/RIOT,Josar/RIOT,binarylemon/RIOT,BytesGalore/PetersRIOT,emmanuelsearch/RIOT,jbeyerstedt/RIOT-OTA-update,rfuentess/RIOT,automote/RIOT,daniel-k/RIOT,chris-wood/RIOT,neumodisch/RIOT,jfischer-phytec-iot/RIOT,dhruvvyas90/RIOT,khhhh/RIOT,herrfz/RIOT-old,stevenj/RIOT,Lotterleben/RIOT,Osblouf/RIOT,attdona/RIOT,miri64/RIOT,tfar/RIOT,changbiao/RIOT,RBartz/RIOT,luciotorre/RIOT,immesys/RiSyn,backenklee/RIOT,binarylemon/RIOT,jremmert-phytec-iot/RIOT,syin2/RIOT,shady33/RIOT,rfswarm/RIOT,Darredevil/RIOT,automote/RIOT,BytesGalore/PetersRIOT,Hyungsin/RIOT-OS,toonst/RIOT,koenning/RIOT,biboc/RIOT,MohmadAyman/RIOT,PSHIVANI/Riot-Code,kushalsingh007/RIOT,alex1818/RIOT,LudwigOrtmann/RIOT,EmuxEvans/RIOT,jasonatran/RIOT,PSHIVANI/Riot-Code,kb2ma/RIOT,hamilton-mote/RIOT-OS,kerneltask/RIOT,toonst/RIOT,wentaoshang/RIOT,dhruvvyas90/RIOT,Darredevil/RIOT,backenklee/RIOT,thiagohd/RIOT,attdona/RIOT,aeneby/RIOT,brettswann/RIOT,locicontrols/RIOT,patkan/RIOT,Lexandro92/RIOT-CoAP,stevenj/RIOT,Yonezawa-T2/RIOT,FrancescoErmini/RIOT,RBartz/RIOT,neiljay/RIOT,ant9000/RIOT,changbiao/RIOT,adjih/RIOT,d00616/RIOT,gautric/RIOT,RIOT-OS/RIOT,gautric/RIOT,tfar/RIOT,chris-wood/RIOT,mfrey/RIOT,x3ro/RIOT,latsku/RIOT,automote/RIOT,dkm/RIOT,emmanuelsearch/RIOT,JensErdmann/RIOT,x3ro/RIOT,emmanuelsearch/RIOT,Ell-i/RIOT,shady33/RIOT,OTAkeys/RIOT,watr-li/RIOT,AnonMall/RIOT,malosek/RIOT,hamilton-mote/RIOT-OS,rfuentess/RIOT,shady33/RIOT,Ell-i/RIOT,backenklee/RIOT,dailab/RIOT,ntrtrung/RIOT,Darredevil/RIOT,marcosalm/RIOT,phiros/RIOT,centurysys/RIOT,phiros/RIOT,authmillenon/RIOT,rakendrathapa/RIOT,wentaoshang/RIOT,MonsterCode8000/RIOT,mtausig/RIOT,ximus/RIOT,kaspar030/RIOT,OlegHahm/RIOT,Lexandro92/RIOT-CoAP,TobiasFredersdorf/RIOT,khhhh/RIOT,fnack/RIOT,jasonatran/RIOT,OTAkeys/RIOT,ks156/RIOT,jasonatran/RIOT,kerneltask/RIOT,asanka-code/RIOT,l3nko/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,khhhh/RIOT,RBartz/RIOT,x3ro/RIOT,yogo1212/RIOT,koenning/RIOT,ros2/ros2_embedded_riot,arvindpdmn/RIOT,adjih/RIOT,Osblouf/RIOT,lazytech-org/RIOT,jhollister/RIOT,mfrey/RIOT,A-Paul/RIOT,OTAkeys/RIOT,herrfz/RIOT-old,kaspar030/RIOT,ant9000/RIOT,authmillenon/RIOT,sumanpanchal/RIOT,rajma996/RIOT,kerneltask/RIOT,benoit-canet/RIOT,zhuoshuguo/RIOT,Hyungsin/RIOT-OS,stevenj/RIOT,katezilla/RIOT,jasonatran/RIOT,avmelnikoff/RIOT,rousselk/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,kaleb-himes/RIOT,mziegert/RIOT,mziegert/RIOT,aeneby/RIOT,emmanuelsearch/RIOT,malosek/RIOT,biboc/RIOT,ThanhVic/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,robixnai/RIOT,bartfaizoltan/RIOT,jasonatran/RIOT,JensErdmann/RIOT,FrancescoErmini/RIOT,x3ro/RIOT,locicontrols/RIOT,MarkXYang/RIOT,kbumsik/RIOT,locicontrols/RIOT,dailab/RIOT,ks156/RIOT,beurdouche/RIOT,latsku/RIOT,abkam07/RIOT,ros2/ros2_embedded_riot,aeneby/RIOT,adjih/RIOT,emmanuelsearch/RIOT,haoyangyu/RIOT,syin2/RIOT,roberthartung/RIOT,jbeyerstedt/RIOT-OTA-update,neumodisch/RIOT,MohmadAyman/RIOT,jremmert-phytec-iot/RIOT,DipSwitch/RIOT,lebrush/RIOT,rfswarm/RIOT,MarkXYang/RIOT,LudwigKnuepfer/RIOT,spium/IoT-RIOT,luciotorre/RIOT,rousselk/RIOT,ximus/RIOT,msolters/RIOT,thomaseichinger/RIOT,cladmi/RIOT,sumanpanchal/RIOT,rakendrathapa/RIOT,LudwigKnuepfer/RIOT,miri64/RIOT,1blankz7/RIOT,ros2/ros2_embedded_riot,alex1818/RIOT,sumanpanchal/RIOT,gebart/RIOT,Josar/RIOT,jhollister/RIOT,syin2/RIOT,MonsterCode8000/RIOT,jhollister/RIOT,mziegert/RIOT,ant9000/RIOT,daniel-k/RIOT,benoit-canet/RIOT,neiljay/RIOT,mfrey/RIOT,watr-li/RIOT,malosek/RIOT,adrianghc/RIOT,alignan/RIOT,koenning/RIOT,EmuxEvans/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,OlegHahm/RIOT,josephnoir/RIOT,mziegert/RIOT,lebrush/RIOT,zhuoshuguo/RIOT,cladmi/RIOT,abp719/RIOT,miri64/RIOT,LudwigKnuepfer/RIOT,chris-wood/RIOT,attdona/RIOT,jferreir/RIOT,Yonezawa-T2/RIOT,JensErdmann/RIOT,mziegert/RIOT,sgso/RIOT,benoit-canet/RIOT