{"id":20313267,"url":"https://github.com/copych/esp32-dualcore-i2s","last_synced_at":"2025-09-22T21:31:21.776Z","repository":{"id":63170111,"uuid":"565549000","full_name":"copych/ESP32-dualcore-i2s","owner":"copych","description":"Proof of concept for dual core sound synthesis via i2s","archived":false,"fork":false,"pushed_at":"2024-09-27T12:07:09.000Z","size":19,"stargazers_count":3,"open_issues_count":0,"forks_count":1,"subscribers_count":1,"default_branch":"main","last_synced_at":"2024-11-14T18:10:03.596Z","etag":null,"topics":["arduino","esp32","i2s","multithreading","sound","synthesizer"],"latest_commit_sha":null,"homepage":"","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/copych.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}},"created_at":"2022-11-13T18:52:55.000Z","updated_at":"2024-10-06T11:49:37.000Z","dependencies_parsed_at":"2023-01-23T03:15:06.778Z","dependency_job_id":null,"html_url":"https://github.com/copych/ESP32-dualcore-i2s","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/copych%2FESP32-dualcore-i2s","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/copych%2FESP32-dualcore-i2s/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/copych%2FESP32-dualcore-i2s/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/copych%2FESP32-dualcore-i2s/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/copych","download_url":"https://codeload.github.com/copych/ESP32-dualcore-i2s/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":233893513,"owners_count":18746752,"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":["arduino","esp32","i2s","multithreading","sound","synthesizer"],"created_at":"2024-11-14T18:10:13.716Z","updated_at":"2025-09-22T21:31:16.517Z","avatar_url":"https://github.com/copych.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# ESP32 multitasking dual core sound synthesis\nProof of concept for ESP32 dual core multithread sound synthesis.\n\nThis sketch creates 2 tasks -- one for each of two Xtensa LX6 cores. Each task generates a Sin() signal of a given frequency. One of the tasks then sums the buffers and writes the result to i2s DMA buffer. Data safety is based on a xTaskNotifyGive() / ulTaskNotifyTake().\n\nSampling rate is 44100Hz, samples are 16bit stereo.\n\nProject was compiled in ArduinoIDE with ESP core 2.0.5.\n\nHardware is ESP32 DevKit with a PCM5102 extenal DAC connected to GPIOs 5, 18 and 19.\n\nInitial code for a single core and internal DAC was taken from here: https://github.com/infrasonicaudio/esp32-i2s-synth-example\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcopych%2Fesp32-dualcore-i2s","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcopych%2Fesp32-dualcore-i2s","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcopych%2Fesp32-dualcore-i2s/lists"}