Hello again,
I found that disabling the bailout in acm_tty_open:
> if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR |
ACM_CTRL_RTS) &&
> (acm->ctrl_caps & USB_CDC_CAP_LINE))
> goto full_bailout;
and acm_set_control in acm_port_down:
> acm_set_control(acm, acm->ctrlout = 0);
is enough to stop the tusb from going unhappy.
However the consequence is that cdc_acm seems to pile up buffer while no
reader is connected, and spit it out all at once when a reader reconnects.
Any idea how one might avoid that?(wiping the buffer when there's no reader)
- Paul-Kenji
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