Engqungqutheleni ye-38c3, kwethulwe umbiko ngendaba emayelana nobunjiniyela obuhlehlayo be-firmware kanye nohlelo lomyalo we-TI SimpleLink chips (CC13XX kanye ne-CC26XX) ngokusekelwa kwe-BLE (Bluetooth Low Energy), okwenze kwaba nokwenzeka ukusebenzisa isamukeli se-FM. I-analog transmitter ingase ingenzeki - ama-chips ayidijithali kuphela.
Ama-chips asebenzisa i-DSP futhi indikimba ye-ARM Cortex eyinhloko ilawula i-Arm Cortex-M0 radio core (RF Core), ehlinzeka ngesixhumi esibonakalayo esilinganiselwe sokudlulisa umyalezo kumongo oyinhloko. Imemori ewumgogodla yomsakazo ingashintshwa kusetshenziswa iziqephu ezikuvumela ukuthi uguqule ukuziphatha kohlelo oluncane lomsakazo. Umenzi we-chip unikeza amamojula ukuze asekele izivumelwano ezingenazintambo ezihlukahlukene, ezisetshenziswa kusetshenziswa imitapo yolwazi eguquguqukayo neziqephu zememori (ezifana nalezo ezisetshenziswa kuma-chip e-Broadcom uCypress osewakho manje). Ngokulandelayo, ingqikithi yomsakazo ilawula i-DSP yesakhiwo esithile.
Abacwaningi abethule umbiko baphinde bakha kabusha ifomethi ye-patch ye-RF yobunikazi futhi babonisa ukuthi bangazilungiselela kanjani amapheshana abo ukuze bengeze ukusekelwa kwezivumelwano ezintsha ezingenantambo (ngokwesibonelo, kusetshenziswa isamukeli se-FM), balawule uhlelo olungaphansi olungenantambo futhi babuyisele i-firmware. Ikhithi yamathuluzi yokudala nokulayisha amapheshana, kanye nesihlanganisi sesethi yemiyalo esetshenziswa ku-DSP, ishicilelwa ngaphansi kwelayisensi ye-MIT. Okwamanje, indawo yokugcina ayinayo ikhodi yomthombo ye-firmware esebenzisa isamukeli se-analog.
Source: opennet.ru
