tinyusb.git/examples/host/cdc_msc_hid/src/cdc_app.c, branch rework-metricsUnnamed repository; edit this file 'description' to name the repository.http://cgit.235523.xyz/tinyusb.git/atom/examples/host/cdc_msc_hid/src/cdc_app.c?h=rework-metrics2026-09-05T08:25:15Zexamples: write the host cdc console over RTT when that is the console2026-09-05T08:25:15Zhathachthach@tinyusb.org2026-09-03T11:19:17Zurn:sha1:c60c7bac231cee58db0fa8bdd3c3fd251dad2ee8
console_write() forwards what the attached CDC device sent back to the
board's console, and reached for board_uart_write() directly to stay
non-blocking. On a board whose console is the debug probe there is no UART:
board_uart_write() is a stub returning -1, so everything the device echoed was
dropped, and the do/while loop retried a write that could never make progress
and spun until more data arrived.
Send it through SEGGER_RTT_Write() on LOGGER_RTT builds -- already
non-blocking in the default NO_BLOCK_SKIP mode, which is what the UART path
wanted board_uart_write() for.
The retry is also bounded now. board_uart_write() is only documented to
return the number of bytes sent, and the stubs disagree on how they say "no
console here" -- lpc40 returns -1, apm32f0xx returns 0 -- so the loop cannot
decide from the return value alone when to stop. It gives up after 10 ms
without progress instead, which no draining console ever hits, and keeps the
negative return as a fast path so a stub UART does not cost that wait on
every read.
The RTT header include lives in board_api.h so any example can reach it; the
include path only exists when LOGGER=rtt defines LOGGER_RTT.
host/cdc_msc_hid now passes on ea4088_quickstart, whose probe (LPC-Link2) has
no VCOM: the CDC echo round-trips through a CH340 with TX-RX shorted.
remove sync() in tinyusb callback since it cause issue with RTOS when usbh task is blocking2026-05-28T11:20:22Zhathachthach@tinyusb.org2026-05-28T11:20:22Zurn:sha1:c954c8c4c70df616e429d8e7ae1c382d3043aceafix issue with exmaple2026-04-03T03:45:16Zhathachthach@tinyusb.org2026-04-02T16:56:47Zurn:sha1:9368e5d40f3d8e5ac323d288f969782a962d593efix hil host cdc echo test with imxrt and other fast mcu2026-04-03T03:45:13Zhathachthach@tinyusb.org2026-04-02T16:30:06Zurn:sha1:134e14849b1864ce3454950a50d2c79d93a96cd8fix more alerts2025-11-08T08:54:02Zhathachthach@tinyusb.org2025-11-08T08:54:02Zurn:sha1:7f173ab5ed6a80a5fd6780779fe63fb97d2be0e9improve cmake warning flags, fix various warnings in examples2025-10-14T10:13:28Zhathachthach@tinyusb.org2025-10-14T10:13:28Zurn:sha1:47b13f6b102ea981b79588158dca436ebc21f1aeupdate example2025-07-02T08:38:14Zhathachthach@tinyusb.org2025-07-02T08:38:14Zurn:sha1:a8b5e2bfc0a2d35ba775f7b2de81d531ed525e41cdch clean up and refactor, add explicit sync() API2025-06-20T05:52:34Zhathachthach@tinyusb.org2025-06-20T05:52:34Zurn:sha1:adf6cbfe03523cd8f7e23cb7f2edbb4304a6cd89add common cdch_process_set_config() to safely complete set_config() when it failed.2025-06-17T15:16:13Zhathachthach@tinyusb.org2025-06-17T15:16:13Zurn:sha1:d4abf43f226b5594c935c60c38d05a90359763e1
driver_process_set_config() also pass drv index with user_data
fix wanings2025-03-25T10:36:15Zhathachthach@tinyusb.org2025-03-25T10:36:15Zurn:sha1:99673cdbb81b76f7020cf6aacb182ea86fdee3da