feat(ameba-rtos-m): add machine.USBSerial (USB CDC-ACM) for EV8711FLM - #2
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wangbaizhe wants to merge 1 commit into
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feat(ameba-rtos-m): add machine.USBSerial (USB CDC-ACM) for EV8711FLM#2wangbaizhe wants to merge 1 commit into
wangbaizhe wants to merge 1 commit into
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Add a USB CDC-ACM virtual serial port bound to ameba-rtos's usbd_cdc_acm stack, gated to EV8711FLM only (CONFIG_AMEBAGREEN2 + CONFIG_USBD_CDC_ACM). Implements construct/init/deinit/isconnected/any/read/write, and wires it into the boot console alongside the existing os.dupterm/WebREPL path. write() blocks on a mutex-serialized TX-done semaphore to stay safe with DMA-direct transmit (CONFIG_CDC_ACM_BULK_TX_SKIP_MEMCPY=1). Disabled by default (CONFIG_USB_OTG_EN_MENU/CONFIG_USB_DEVICE_EN_MENU/ CONFIG_USBD_CDC_ACM_MENU=n in boards/EV8711FLM/prj.conf) pending hardware verification of USB enumeration and REPL-over-USB; flip those three to y to opt in. Both boards build clean either way -- PKE8721DAF and a disabled EV8711FLM compile the feature to an empty object.
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Add a USB CDC-ACM virtual serial port bound to ameba-rtos's usbd_cdc_acm stack, gated to EV8711FLM only (CONFIG_AMEBAGREEN2 + CONFIG_USBD_CDC_ACM). Implements construct/init/deinit/isconnected/any/read/write, and wires it into the boot console alongside the existing os.dupterm/WebREPL path.
write() blocks on a mutex-serialized TX-done semaphore to stay safe with DMA-direct transmit (CONFIG_CDC_ACM_BULK_TX_SKIP_MEMCPY=1).
Disabled by default (CONFIG_USB_OTG_EN_MENU/CONFIG_USB_DEVICE_EN_MENU/ CONFIG_USBD_CDC_ACM_MENU=n in boards/EV8711FLM/prj.conf) pending hardware verification of USB enumeration and REPL-over-USB; flip those three to y to opt in. Both boards build clean either way -- PKE8721DAF and a disabled EV8711FLM compile the feature to an empty object.