This makes it more forgiving of constant acceleration mid-movement, if
the beginning of the movement looks random. Handy for mice that for some
reason generate bot-like constant velocities.
- Implement advanced LED flash support
- Tweak HAL_SPI_TransmitReceive to tolerate a longer SysTick interrupt
- Tune KEYBOARD_BOTDETECT parameters
- L-shift and R-shift are now high-speed alphanumeric keys
(Upstream). Also implemented read-only mass storage mode.
Todo:
- Test. Everything!!!
- Report write protect flag in SCSI "mode parameter header" (whatever
that is)
So it turns out the SCSI ReadCapacity10 command does not return the
device capacity. It returns the address of the last block, which is
(capacity - 1).
Also fixed Upstream's end-of-device sanity check.
Upstream's edge-detect interrupt that starts SPI transmission was not
firing. Sometimes. On some boards only. The cause was Downstream not
allowing enough time between edges for Upstream to catch the signal.
Also misc code tidyups.
It turns out that suspend support on the STM32 USB core is buggy as
heck. Host mode cannot resume after suspend, and device mode cannot
receive resume or send wakeup signalling.
I managed to fake resume support by keeping Downstream and our connected
device running at full power, and simulating a wakeup event to the host
by disconnecting/reconnecting Upstream from the host.
...Downstream was not always changing state correctly after closely
spaced interrupts.
Also improve flash-write-lockout function to avoid dependency on
optimisation level.
Each USB transaction passed to the driver now consists of multiple
64-byte packets. 8 packets when receiving, 4 packets when transmitting.
The STM32 silicon bugs out when more than 4 packets are scheduled to
write at a time :(
Reads 1.0MB/sec, writes 967kB/sec, not CPU limited :)
Robert Fisk