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* Clear error count register on entry to `dispatch_packet`.Brian Cully2019-10-081-11/+14
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* Remove logging when allocating pipe.Brian Cully2019-10-081-6/+0
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* Cache buffer length on entry to `in_transfer` and `out_transfer`.Brian Cully2019-10-081-34/+31
| | | | Use `ptr.offset()` in `in_transfer`, rather than hand calculations.
* Refactor `dispatch_retries`.Brian Cully2019-10-081-15/+24
| | | | | | * Use `USB_XFER_TIMEOUT` for single transaction timeouts. * Ensure pipe is frozen on return. * Reset timeout on data toggle error before retry.
* More messing around with data toggle error handling.Brian Cully2019-10-081-51/+39
| | | | I will not pretend that I know this to be correct, but it seems to work.
* Handle all known transfer/pipe errors.Brian Cully2019-10-081-60/+77
| | | | | | | | | | * Remove `PipeErr::Other`. * Add more variants to `PipeErr`. * Integrate `is_transfer_complete` into `dispatch_result` and simplify. * Cache volatile `intflag` on entry to `dispatch_result` to ensure consistent handling. * Clear fail/perr `intflag` bits in `dispatch_result`.
* Log everything in one statement in `log_regs`.Brian Cully2019-09-241-9/+5
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* Use endpoint's max packet size in transfers.Brian Cully2019-09-241-2/+1
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* Mark pipe descriptor register memory as volatile.Brian Cully2019-09-241-1/+2
| | | | | | | Most of the values in the descriptor memory can be modified by the hardware, so we need to tell Rust that. Also, refactor the common register setup code into `register.rs`.
* Clippy.Brian Cully2019-09-091-5/+6
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* Remove warnings for unconstructed variants of PipeErr.Brian Cully2019-08-171-0/+1
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* A bunch of cleanup and fixes.Brian Cully2019-08-101-11/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify the code a bunch to reduce it to states we actually care about. This will now probe my Logitech G105, NIZ Plum 85EC, and Keyboard.io Model 01. * Don't listen for wakeup interrupts. Only listen for device connection and disconnection, which wakeups sometimes mean. * Remove the SETTLE_DELAY stuff on device connection, as this appears to be handled in hardware, and prevents over-delay which was causing the Model 01 to reset, since it wasn't getting a SOF in time. * Set initial max packet size for address 0 endpoint 0 based on whether the connection is Full Speed or Low Speed. * Remove all intflag checks from USB handler that we don't explicitly set up. * Always listen dor dconn/ddisc in handler. Since we're using a ring buffer for event storage, we shouldn't miss these and always handle them in order. * Don't freeze pipes on errors. Let the hardware do it. * Don't retransmit packets on errors, just keep polling hardware. * Move trfail check to the end, since it's either dependent on previous, more specific checks, or it's just a NAK (but, for some reason, not ERRORFLOW). * Add `modify` method to control pipe register.
* Use endpoint's max packet size for pipe.Brian Cully2019-08-101-4/+24
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* Simplify data toggle handling.Brian Cully2019-08-081-5/+8
| | | | | Only use the data toggle from hardware if we get a data toggle error. Otherwise, use computed toggle values based on endpoint.
* Initial commitBrian Cully2019-08-041-0/+809
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