{"id":21928496,"url":"https://github.com/matthewelse/microbit-bootloader","last_synced_at":"2025-07-29T15:35:04.379Z","repository":{"id":72083236,"uuid":"77940523","full_name":"matthewelse/microbit-bootloader","owner":"matthewelse","description":"Work on the Nordic bootloader for the micro:bit","archived":false,"fork":false,"pushed_at":"2017-07-14T10:06:53.000Z","size":19029,"stargazers_count":3,"open_issues_count":2,"forks_count":1,"subscribers_count":4,"default_branch":"master","last_synced_at":"2025-03-22T12:27:17.551Z","etag":null,"topics":["bootloader","microbit"],"latest_commit_sha":null,"homepage":null,"language":"C","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/matthewelse.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,"publiccode":null,"codemeta":null}},"created_at":"2017-01-03T18:01:05.000Z","updated_at":"2021-07-30T06:23:09.000Z","dependencies_parsed_at":null,"dependency_job_id":"c65041df-ea30-48b1-bd48-fc5c1e15ab90","html_url":"https://github.com/matthewelse/microbit-bootloader","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/matthewelse/microbit-bootloader","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/matthewelse%2Fmicrobit-bootloader","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/matthewelse%2Fmicrobit-bootloader/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/matthewelse%2Fmicrobit-bootloader/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/matthewelse%2Fmicrobit-bootloader/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/matthewelse","download_url":"https://codeload.github.com/matthewelse/microbit-bootloader/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/matthewelse%2Fmicrobit-bootloader/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":267709600,"owners_count":24131921,"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","status":"online","status_checked_at":"2025-07-29T02:00:12.549Z","response_time":2574,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"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":["bootloader","microbit"],"created_at":"2024-11-28T22:26:15.970Z","updated_at":"2025-07-29T15:35:04.347Z","avatar_url":"https://github.com/matthewelse.png","language":"C","readme":"# micro:bit bootloader\n\nThe current primary aim is to get a fully-functional build of the bootloader using GCC, that can be used as a drop in replacement for the existing bootloader.\n\nHowever, this needs to use a single bank of flash, as well as not requiring an init packet.\n\nThe current state of the project can be built by:\n\n```bash\ncd examples/dfu/bootloader/pca10028/single_bank_ble_s110/armgcc\nmake\n```\n\nThis will then produce a hex file in `armgcc/_build`, which you can then run through `srec_cat` to produce a drop in replacement for the binary from before.\n\nThe `srec_cat` command is only necessary if you're producing a combined binary containing an application, since it sets the bootloader settings to indicate that an application is present.\n\n```bash\nsrec_cat _build/nrf51422_xxac.hex -intel \\\n    -exclude 0x3FC00 0x3FC20 \\\n    -generate 0x3FC00 0x3FC04 -constant-l-e 0x01 4 \\\n    -generate 0x3FC04 0x3FC08 -constant-l-e 0x00 4 \\\n    -generate 0x3FC08 0x3FC0C -constant-l-e 0xFE 4 \\\n    -generate 0x3FC0C 0x3FC20 -constant 0x00 \\\n    -o _build/nrf51422_xxac.hex -intel\n```\n\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmatthewelse%2Fmicrobit-bootloader","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmatthewelse%2Fmicrobit-bootloader","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmatthewelse%2Fmicrobit-bootloader/lists"}