SmartFusion2 MSS
CAN Configuration
Folasaga
O le SmartFusion2 Microcontroller Subsystem (MSS) e maua ai le CAN hard peripheral (APB_1 sub bus).
I luga ole MSS Canvas, e tatau ona e fa'agaoioia (fa'aletonu) pe fa'amalo le fa'ata'ita'iga CAN e fa'atatau pe o fa'aogaina i lau talosaga o iai nei. A fa'aletonu, o le CAN fa'ata'ita'iga e faia i le toe setiina (tulaga aupito maualalo o le mana).
E le mafai, pe a mafai, o le CAN ports e faʻapipiʻiina e faʻafesoʻotaʻi i le masini Multi Standard I / Os (MSIOs). Manatua o MSIOs ua tu'uina i le CAN fa'ata'ita'iga o lo'o fa'asoa fa'atasi ma isi MSS peripherals. O lo'o avanoa nei I/O fefa'asoaa'i e fa'afeso'ota'i i MSS GPIOs ma isi mea fa'apitonu'u pe a fa'aletonu le CAN fa'ata'ita'iga po'o le feso'ota'i atu o ports CAN i le ie FPGA.
Ole amio fa'atino ole CAN fa'ata'ita'iga e tatau ona fa'amalamalamaina ile tulaga ole talosaga ile fa'aogaina ole SmartFusion2 MSS CAN Aveta'avale saunia e Microsemi.
I totonu o lenei pepa, matou te faʻamatalaina pe faʻafefea ona e faʻatulagaina le MSS CAN faʻataʻitaʻiga ma faʻamatalaina pe faʻafefea ona fesoʻotaʻi faʻailoga pito i luga.
Mo nisi fa'amatalaga e uiga i le MSS CAN hard peripheral, fa'amolemole tagai ile SmartFusion2 User Guide.
Filifiliga Fa'atonu
E leai ni filifiliga fa'atulagaina o meafaigaluega mo le CAN peripheral.
Fa'aaliga: Afai o le CAN faʻataʻitaʻiga e mafai, M3_CLK e tatau ona faʻateleina o le 8MHz. O lenei tapula'a o le a fa'amalosia i le MSS CCC Configurator.
Laulau o Fa'ailoga Fa'ailoga Peripheral
O le ata o le SmartFusion2 e maua ai se fuafuaga e sili ona fetuutuunai mo le faʻafesoʻotaʻi faʻailoga pito i luga ole MSIOs poʻo le ie FPGA. Fa'aoga le laulau fa'atulagaina o fa'ailo e fa'amatala ai le mea e feso'ota'i ai lau peripheral i lau talosaga. O lenei laulau fa'atonu e iai koluma nei (Ata 2-1):
MSIO - Faʻailoa le igoa faʻailoga lautele ua faʻatulagaina i se laina tuʻuina atu.
Fesoʻotaʻiga Autu - Faʻaaoga le lisi pa'ū i lalo e filifili pe fesoʻotaʻi le faailo i se MSIO poʻo le ie FPGA.
Fa'asinomaga – Fa'ailoa mai pe o le fa'ailoga o lo'o i totonu, OUT po'o totonu.
Package Pin - Faʻaalia le pine afifi e fesoʻotaʻi ma le MSIO pe a fesoʻotaʻi le faailo i se MSIO.
So'oga Fa'aopoopo – Faaaoga le Advanced Options siaki-pusa e view isi feso'ota'iga filifiliga:
- Siaki le Ie filifiliga e matau i totonu o le ie FPGA se faailo e fesoʻotaʻi ma se MSIO.
- Siaki le filifiliga GPIO e mata'ituina ai se fa'ailo fa'atonuga - mai le ie FPGA po'o le MSIO - fa'aaoga le MSS GPIO.
Feso'ota'i Muamuaview
Le So'otaga Muamuaview laulau i le MSS CAN Configurator talanoaga o loʻo faʻaalia ai se kalafi view o feso'ota'iga o lo'o iai nei mo le laina fa'ailoga fa'ailoga (Ata 3-1).
Fete'ena'iga Punaoa
Talu ai ona o le MSS peripherals (MMUART, I2C, SPI, CAN, GPIO, USB, Ethernet MAC) e faʻasoa MSIO ma FPGA fabric access resources, o le faʻatulagaina o soʻo se tasi o nei peripheral e ono iʻu ai i se feteʻenaʻiga o punaoa pe a e faʻapipiʻi se faʻataʻitaʻiga o le peripheral o loʻo iai nei. E tu'uina atu fa'ailoga manino pe a tula'i mai sea fete'ena'iga.
Punaoa o lo'o fa'aogaina e se fa'aoga pito na fa'apipi'i muamua e i'u ai i ituaiga fa'amatalaga se tolu i le fa'aoga fa'apitonu'u o lo'o iai nei:
• Fa'amatalaga – Afai e le fete'ena'i se puna'oa o lo'o fa'aogaina e se isi peripheral ma le fa'atulagaga o lo'o i ai nei, e aliali mai se fa'amatalaga fa'amatalaga i le feso'ota'iga muamua.view laulau, i luga o lena punaoa. O se meafaigaluega i luga o le atigipusa o loʻo tuʻuina atu ai faʻamatalaga e uiga i le peripheral e faʻaaogaina lena punaoa.
• Lapataiga/Sese – Afai e fete'ena'i se puna'oa o lo'o fa'aogaina e se isi fa'alapotopotoga fa'atasi ma le fa'atulagaga o lo'o iai nei, e aliali mai se fa'ailoga fa'ailoga po'o se mea sese i le feso'ota'iga muamua.view laulau, i luga o lena punaoa. O se meafaigaluega i luga o le atigipusa o loʻo tuʻuina atu ai faʻamatalaga e uiga i le peripheral e faʻaaogaina lena punaoa.
A fa'aalia ni mea sese o le a le mafai ona e faia le fa'atulagaga o lo'o iai nei. E mafai ona e fo'ia le fete'ena'iga e ala i le fa'aogaina o se isi fa'asologa po'o le fa'aleaogaina o le fa'asologa o lo'o i ai nei e fa'aaoga ai le fa'amalo.
A faʻaalia lapataiga (ma e leai ni mea sese), e mafai ona e faia le faʻatulagaga o loʻo iai nei. Ae ui i lea, e le mafai ona e gaosia le MSS atoa; o le a e vaʻai i faʻasologa o mea sese i le faʻamalama ogalaau Libero SoC. E tatau ona e fo'ia le fete'ena'iga na e faia ina ua e faia le fa'atulagaga e ala i le toe fa'atulagaina o so'o se tasi o peripherals na mafua ai le fete'ena'iga.
E fa'atino e le au fa'atonu fa'apitoa tulafono nei e iloa ai pe tatau ona lipotia se fete'ena'iga o se mea sese po'o se lapataiga.
- Afai o le peripheral o loʻo faʻatulagaina o le GPIO peripheral ona feteʻenaʻi uma lava o mea sese.
- Afai o le peripheral o loʻo faʻapipiʻiina e le o le GPIO peripheral ona feteʻenaʻi uma lava o ni mea sese seʻi vagana o le feteenaiga o loʻo i ai ma se punaoa GPIO lea o feeseeseaiga o le a avea ma lapataiga.
Sese Example
O le USB peripheral e fa'aoga ma fa'aoga le masini PAD fa'amauina i le pine V24. O le fa'atulagaina o le CAN peripheral ina ia feso'ota'i le uafu RXBUS i se MSIO e i'u ai i se mea sese.
Ata 4-1 o loʻo faʻaalia ai le faʻailoga sese o loʻo faʻaalia i le laulau Fesoʻotaʻi Tofiga mo le taulaga RXBUS. 
Ata 4-2 o loʻo faʻaalia ai le faʻailoga sese o loʻo faʻaalia i le Preview laulau i luga ole punaoa PAD mo le taulaga RXBUS.
Lapataiga Example
O le GPIO peripheral o loʻo faʻaogaina ma faʻaogaina le masini PAD faʻapipiʻi i le pine V24 (GPIO_3).
O le fa'atulagaina o le CAN peripheral ina ia feso'ota'i le uafu RXBUS i se MSIO e maua ai se lapataiga.
Ata 4-3 o loʻo faʻaalia ai le faʻailoga lapatai o loʻo faʻaalia i le laulau Fesoʻotaʻi Tofiga mo le taulaga RXBUS.
O le ata 4-4 o lo'o fa'aalia ai le fa'aikona lapatai o lo'o fa'aalia i le mua'iview laulau i luga ole punaoa PAD mo le taulaga RXBUS. Manatua i lenei example, o loʻo i ai se feteʻenaʻiga lona lua ma se GPIO ona o le fesoʻotaʻiga faaopoopo i le GPIO_3.
Fa'amatalaga Example
O le USB peripheral e fa'aoga ma fa'aoga le masini PAD fa'amauina i le pine V24. O le fa'atulagaina o le CAN peripheral ina ia feso'ota'i le uafu RXBUS i le ie FPGA e le tupu ai se fete'ena'iga. Ae ui i lea, ina ia faʻaalia o ia PAD e fesoʻotaʻi ma le RXBUS port (ae le faʻaaogaina i lenei tulaga), o le faʻamatalaga faʻamatalaga o loʻo faʻaalia i le Preview laulau (Ata 4-5). O se meafaigaluega e feso'ota'i ma le fa'ailoga e maua ai se fa'amatalaga pe fa'apefea ona fa'aogaina le punaoa (USB i lenei tulaga).
Fa'amatalaga Taulaga
Laulau 5-1 • Fa'amatalaga o le Taulaga
| Igoa o le Taulaga | Vaega o Taulaga | Fa'atonuga | Fa'amatalaga |
| RX | CAN_PADS CAN_FABRIC |
In | Fa'alotoifale maua fa'ailoga. |
| TX | CAN_PADS CAN_FABRIC |
I fafo | E MAFAI e pasi e lafo faailoilo. |
| TX_EN_N | CAN_PADS CAN_FABRIC |
I fafo | Fa'ailoga fa'atonu aveta'avale fafo. / E fa'aoga lea e fa'amalo ai se transceiver CAN i fafo. / TX_EN_N e fa'amaonia pe a taofi le CAN controller po'o le CAN state ua alu pasi. |
Fa'aaliga:
- O igoa ole uafu e iai le igoa ole CAN fa'ata'ita'iga o se prefix, fa'ata'ita'iga CAN_RX.
- Ie autu feso'ota'iga uafu o igoa o lo'o i ai le "F2M" o se suffix, fa'ata'ita'iga CAN _RX_F2M.
- Ie fa'aopoopo feso'ota'iga uafu tu'u igoa igoa "I2F" o se suffix, fa'ata'ita'iga CAN_RX_I2F.
- O igoa o le ie ma le fa'aogaina o mea e mafai ona fa'aaogaina e iai le "M2F" ma le "M2F_OE" o se suffix, fa'ata'ita'iga CAN_RX_M2F ma CAN_ RX_M2F_OE.
- O pusa PAD e otometi lava ona siitia i luga i le faasologa o mamanu.
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Microsemi SmartFusion2 MSS CAN Configuration [pdf] Taiala mo Tagata Fa'aoga SmartFusion2 MSS CAN Configuration, SmartFusion2, MSS CAN Configuration, CAN Configuration |
