SmartFusion2 MSS
E KA HLOKOMELA
Selelekela
SmartFusion2 Microcontroller Subsystem (MSS) e fana ka CAN hard peripheral (APB_1 sub bese).
Ho MSS Canvas, o tlameha ho bulela (ea kamehla) kapa o tima ketsahalo ea CAN ho latela hore na e ea sebelisoa ts'ebelisong ea hau ea hajoale. Ha e koetsoe, ketsahalo ea CAN e ts'oaroa e setiloe bocha (maemo a tlase a matla).
Ka nako e sa lekanyetsoang, ha e nolofalitsoe, likou tsa CAN li lokiselitsoe ho hokahanya le sesebelisoa sa Multi Standard I/Os (MSIOs). Hlokomela hore li-MSIO tse abetsoeng ketsahalo ea CAN li arolelanoa le lisebelisoa tse ling tsa MSS. Li-I/O tsena tse arolelanoang lia fumaneha ho hokela ho MSS GPIOs le lisebelisoa tse ling ha ketsahalo ea CAN e koetsoe kapa haeba likou tsa mohlala tsa CAN li hokahane le lesela la FPGA.
Boitšoaro bo sebetsang ba mohlala oa CAN bo tlameha ho hlalosoa boemong ba kopo ho sebelisa SmartFusion2 MSS CAN Driver e fanoeng ke Microsemi.
Tokomaneng ena, re hlalosa kamoo u ka hlophisang mohlala oa MSS CAN le ho hlalosa hore na matšoao a peripheral a hokahane joang.
Bakeng sa lintlha tse ling mabapi le peripheral e thata ea MSS CAN, ka kopo sheba ho SmartFusion2 User Guide.
Dikgetho tsa Tlhophiso
Ha ho na likhetho tsa tlhophiso ea Hardware bakeng sa peripheral ea CAN.
Hlokomela: Haeba mohlala oa CAN o lumelletsoe, M3_CLK e tlameha ho ba makhetlo a mangata a 8MHz. Thibelo ena e tla kengoa tšebetsong ho MSS CCC Configurator.
Lethathamo la Kabelo la Lipontšo tsa Peripheral
Moralo oa SmartFusion2 o fana ka schema e feto-fetohang haholo bakeng sa ho hokahanya mats'oao a peripheral ho li-MSIO kapa lesela la FPGA. Sebelisa tafole ea tlhophiso ea matšoao ho hlalosa hore na peripheral ea hau e hokahane le eng ts'ebelisong ea hau. Tafole ena ea likabelo e na le litšiea tse latelang (setšoantšo sa 2-1):
MSIO - E khetholla lebitso la lets'oao la peripheral le hlophisitsoeng ka tatellano e fanoeng.
Khokahano e ka Sehloohong - Sebelisa lethathamo le theoha ho khetha hore na lets'oao le hokahane le MSIO kapa lesela la FPGA.
Tataiso – E bontsha haeba letshwao la letshwao le le IN, OUT kapa INOUT.
Package Pin - E bonts'a pini ea sephutheloana e amanang le MSIO ha lets'oao le hokahantsoe le MSIO.
Maqhama a Eketsehileng – Sebelisa Lebokose la ho hlahloba Likhetho tse Tsoetseng Pele ho view likhetho tse eketsehileng tsa khokahano:
- Sheba khetho ea Lesela ho sheba lesela la FPGA lets'oao le hokahaneng le MSIO.
- Lekola khetho ea GPIO ho bona lets'oao la tataiso - ho tsoa lesela la FPGA kapa MSIO - o sebelisa MSS GPIO.
Khokahano Peleview
The Connectivity Preview phanele ea puisano ea MSS CAN Configurator e bonts'a setšoantšo view ea likhokahano tsa hajoale bakeng sa mola o totobalitsoeng oa lets'oao (Setšoantšo sa 3-1).
Likhohlano tsa mehloli
Hobane li-peripherals tsa MSS (MMUART, I2C, SPI, CAN, GPIO, USB, Ethernet MAC) li arolelana lisebelisoa tsa phihlello ea masela a MSIO le FPGA, tlhophiso ea leha e le efe ea liphatlalatso tsena e ka baka khohlano ea lisebelisoa ha u lokisa mohlala oa peripheral ea hajoale. Li-peripheral configurator li fana ka matšoao a hlakileng ha ho hlaha khohlano e joalo.
Lisebelisoa tse sebelisoang ke sephetho se neng se hlophisitsoe pele ho mefuta e meraro ea maikutlo ho setlhophiso sa hajoale sa peripheral:
• Tlhahisoleseding – Haeba sesebediswa se sebediswang ke peripheral enngwe se sa hohlane le tlhophiso ya hajwale, letshwao la tlhahisoleseding le hlaha ho kgokelo pele.view panel, mohloling oo. Lethathamo la lisebelisoa ho aekhone le fana ka lintlha tse mabapi le hore na ke karolo efe e sebelisang sesebelisoa seo.
• Tlhokomediso/Phoso – Haeba sesebediswa se sebediswang ke pheriferale se thulana le tlhophiso ya hajwale, ho hlaha letshwao la temoso kapa phoso ho kgokelo pele.view panel, mohloling oo. Lethathamo la lisebelisoa ho aekhone le fana ka lintlha tse mabapi le hore na ke karolo efe e sebelisang sesebelisoa seo.
Ha liphoso li hlaha u ke ke ua khona ho etsa tlhophiso ea hajoale. O ka rarolla bothata ka ho sebelisa litlhophiso tse fapaneng kapa oa hlakola lipeakanyo tsa hajoale o sebelisa konopo ea Hlakola.
Ha litemoso li hlahisoa ('me ha ho na liphoso), u ka etsa tlhophiso ea hajoale. Leha ho le joalo, u ke ke ua hlahisa MSS ka kakaretso; u tla bona liphoso tsa moloko ka fensetere ea log ea Libero SoC. U tlameha ho rarolla likhohlano tseo u li bakileng ha u ne u etsa peakanyo ka ho hlophisa bocha e 'ngoe ea likarolo tse bakang khohlano.
Li-peripheral configurator li sebelisa melao e latelang ho fumana hore na khohlano e lokela ho tlalehoa e le phoso kapa temoso.
- Haeba peripheral e hlophisitsoeng ke GPIO peripheral joale likhohlano tsohle ke liphoso.
- Haeba pheriferale e hlophisitsoeng e se peripheral ea GPIO joale likhohlano tsohle ke liphoso ntle le haeba khohlano e na le mohloli oa GPIO moo likhohlano li tla nkuoa e le litemoso.
Phoso Example
Peripheral ea USB ea sebelisoa 'me e sebelisa PAD ea sesebelisoa e tlameletsoeng ho kenya phini V24. Ho lokisa peripheral ea CAN hore boema-kepe ba RXBUS bo hokahane le MSIO ho baka phoso.
Setšoantšo sa 4-1 se bonts'a letšoao la phoso le bontšitsoeng tafoleng ea Kabelo ea Khokahano bakeng sa boema-kepe ba RXBUS. 
Setšoantšo sa 4-2 se bontša letšoao la phoso le bontšitsoeng ho Preview phanele ho sesebelisoa sa PAD bakeng sa boema-kepe ba RXBUS.
Temoso Example
GPIO peripheral e sebelisoa mme e sebelisa PAD ea sesebelisoa e tlameletsoeng ho kenya pin V24 (GPIO_3).
Ho lokisa peripheral ea CAN hore boema-kepe ba RXBUS bo hokahane le MSIO ho fella ka temoso.
Setšoantšo sa 4-3 se bonts'a lets'oao la temoso le bonts'itsoeng tafoleng ea Kabelo ea Khokahano bakeng sa boema-kepe ba RXBUS.
Setšoantšo sa 4-4 se bonts'a letšoao la temoso le bontšitsoeng peleview phanele ho sesebelisoa sa PAD bakeng sa boema-kepe ba RXBUS. Hlokomela hore ho ex enaample, ho na le khohlano ea bobeli le GPIO ka lebaka la khokahano e eketsehileng ho GPIO_3.
Boitsebiso Example
Peripheral ea USB ea sebelisoa 'me e sebelisa PAD ea sesebelisoa e tlameletsoeng ho kenya phini V24. Ho lokisa peripheral ea CAN hore boema-kepe ba RXBUS bo hokahane le lesela la FPGA ha bo bake likhohlano. Leha ho le joalo, ho bontša hore PAD e amahanngoa le boema-kepe ba RXBUS (empa e sa sebelisoe tabeng ena), letšoao la Boitsebiso le bontšoa ho Preview phanele (Setšoantšo sa 4-5). Thulusi e amanang le letšoao e fana ka tlhaloso ea hore na sesebelisoa se sebelisoa joang (USB tabeng ena).
Tlhaloso ea Boema-kepe
Lethathamo la 5-1 • Tlhaloso ea Boema-kepe
| Lebitso la Port | Sehlopha sa Port | Tataiso | Tlhaloso |
| RX | KA_PADS KA_LESEPA |
In | Letšoao la ho amohela sebakeng seo. |
| TX | KA_PADS KA_LESEPA |
Tsoa | CAN bese e fetisa lets'oao. |
| TX_EN_N | KA_PADS KA_LESEPA |
Tsoa | Letšoao la taolo ea mokhanni oa kantle. / Sena se sebelisetsoa ho tima transceiver ea kantle ea CAN. / TX_EN_N e tiisetsoa ha molaoli oa CAN a emisitsoe kapa haeba naha ea CAN e eme. |
Hlokomela:
- Mabitso a boema-kepe a na le lebitso la mohlala oa CAN joalo ka sehlongoapele, mohlala, CAN_RX.
- Mabitso a likou tsa likhokahanyo tsa mantlha tsa masela a na le "F2M" joalo ka sehokelo, mohlala, CAN _RX_F2M.
- Mabitso a likou tsa masela a eketsehileng a na le "I2F" joalo ka sehlomathi, mohlala, CAN_RX_I2F.
- Mabitso a li-port a nang le "M2F" le "M2F_OE" e le suffix, mohlala, CAN_RX_M2F le CAN_RX_M2F_OE.
- Boema-kepe ba PAD bo phahamisetsoa ka bohona ho ea holimo maemong a meralo eohle.
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Litokomane / Lisebelisoa
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Microsemi SmartFusion2 MSS E KA Ntlafatsoa [pdf] Bukana ea Mosebelisi Tlhophiso ea SmartFusion2 MSS CAN, SmartFusion2, MSS CAN Configuration, CAN Configuration |
