{"id":13801314,"url":"https://github.com/jxltom/micropython-mcp2515","last_synced_at":"2025-06-23T13:33:30.681Z","repository":{"id":40458231,"uuid":"246467754","full_name":"jxltom/micropython-mcp2515","owner":"jxltom","description":"Micropython MCP2515 driver, porting from Arduino MCP2515 CAN interface library","archived":false,"fork":false,"pushed_at":"2023-04-13T23:30:16.000Z","size":116,"stargazers_count":28,"open_issues_count":4,"forks_count":14,"subscribers_count":4,"default_branch":"master","last_synced_at":"2025-04-19T07:57:39.727Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/jxltom.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null}},"created_at":"2020-03-11T03:43:35.000Z","updated_at":"2024-12-10T12:34:42.000Z","dependencies_parsed_at":"2024-01-29T19:30:22.488Z","dependency_job_id":"5bb0f266-2c32-4643-8bea-1c227fe7657e","html_url":"https://github.com/jxltom/micropython-mcp2515","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/jxltom/micropython-mcp2515","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jxltom%2Fmicropython-mcp2515","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jxltom%2Fmicropython-mcp2515/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jxltom%2Fmicropython-mcp2515/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jxltom%2Fmicropython-mcp2515/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/jxltom","download_url":"https://codeload.github.com/jxltom/micropython-mcp2515/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jxltom%2Fmicropython-mcp2515/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":261487132,"owners_count":23166022,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-08-04T00:01:21.505Z","updated_at":"2025-06-23T13:33:25.671Z","avatar_url":"https://github.com/jxltom.png","language":"Python","funding_links":[],"categories":["Libraries"],"sub_categories":["Communications"],"readme":"# micropython-mcp2515\n\nMicropython MCP2515 driver, porting from [Arduino MCP2515 CAN interface library](https://github.com/autowp/arduino-mcp2515)\n\n## Getting Started\n\nThis MCP2515 driver could be used for any MCU or platform supported by Micropython, such as Pyboard, ESP32, ESP8286, etc.\n\n```python\n\"\"\"\nFollowing SPI drivers are supported, please adjust by your hardware\nfrom .src import SPIESP8286 as SPI\nfrom .src import SPIESP32 as SPI\n\n\nThe CAN driver can be initialized with default baudrate 10MHz\nCAN(SPI(cs=YOUR_SPI_CS_PIN)) or\nCAN(SPI(cs=YOUR_SPI_CS_PIN, baudrate=YOUR_DESIRED_BAUDRATE))\n\nAnd here is an example to set filter for extended frame with ID 0x12345678\ncan.setFilter(RXF.RXF0, True, 0x12345678 | CAN_EFF_FLAG)\ncan.setFilterMask(MASK.MASK0, True, 0x1FFFFFFF | CAN_EFF_FLAG)\ncan.setFilterMask(MASK.MASK1, True, 0x1FFFFFFF | CAN_EFF_FLAG)\n\"\"\"\nimport time\n\nfrom src import (\n    CAN,\n    CAN_CLOCK,\n    CAN_EFF_FLAG,\n    CAN_ERR_FLAG,\n    CAN_RTR_FLAG,\n    CAN_SPEED,\n    ERROR,\n)\nfrom src import SPIESP32 as SPI\nfrom src import CANFrame\n\n\ndef main():\n    # Initialization\n    can = CAN(SPI(cs=23))\n\n    # Configuration\n    if can.reset() != ERROR.ERROR_OK:\n        print(\"Can not reset for MCP2515\")\n        return\n    if can.setBitrate(CAN_SPEED.CAN_500KBPS, CAN_CLOCK.MCP_8MHZ) != ERROR.ERROR_OK:\n        print(\"Can not set bitrate for MCP2515\")\n        return\n    if can.setNormalMode() != ERROR.ERROR_OK:\n        print(\"Can not set normal mode for MCP2515\")\n        return\n\n    # Prepare frames\n    data = b\"\\x12\\x34\\x56\\x78\\x9A\\xBC\\xDE\\xF0\"\n    sff_frame = CANFrame(can_id=0x7FF, data=data)\n    sff_none_data_frame = CANFrame(can_id=0x7FF)\n    err_frame = CANFrame(can_id=0x7FF | CAN_ERR_FLAG, data=data)\n    eff_frame = CANFrame(can_id=0x12345678 | CAN_EFF_FLAG, data=data)\n    eff_none_data_frame = CANFrame(can_id=0x12345678 | CAN_EFF_FLAG)\n    rtr_frame = CANFrame(can_id=0x7FF | CAN_RTR_FLAG)\n    rtr_with_eid_frame = CANFrame(can_id=0x12345678 | CAN_RTR_FLAG | CAN_EFF_FLAG)\n    rtr_with_data_frame = CANFrame(can_id=0x7FF | CAN_RTR_FLAG, data=data)\n    frames = [\n        sff_frame,\n        sff_none_data_frame,\n        err_frame,\n        eff_frame,\n        eff_none_data_frame,\n        rtr_frame,\n        rtr_with_eid_frame,\n        rtr_with_data_frame,\n    ]\n\n    # Read all the time and send message in each second\n    end_time, n = time.ticks_add(time.ticks_ms(), 1000), -1\n    while True:\n        error, iframe = can.readMessage()\n        if error == ERROR.ERROR_OK:\n            print(\"RX  {}\".format(iframe))\n\n        if time.ticks_diff(time.ticks_ms(), end_time) \u003e= 0:\n            end_time = time.ticks_add(time.ticks_ms(), 1000)\n            n += 1\n            n %= len(frames)\n\n            error = can.sendMessage(frames[n])\n            if error == ERROR.ERROR_OK:\n                print(\"TX  {}\".format(frames[n]))\n            else:\n                print(\"TX failed with error code {}\".format(error))\n\n\nif __name__ == \"__main__\":\n    try:\n        main()\n    except KeyboardInterrupt:\n        pass\n```\n\n## Limitation\n\n- Since Micropython is not fast enough, MCP2515 might send duplicated messages when CAN speed is too fast or SPI speed is too low. This is because previous message will still be transmitted repeatedly when MCP2515's SPI CS is not disabled timely.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjxltom%2Fmicropython-mcp2515","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjxltom%2Fmicropython-mcp2515","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjxltom%2Fmicropython-mcp2515/lists"}