| Commit message (Collapse) | Author | Age | Files | Lines |
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Fixes an (admittedly very unlikely) race condition.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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We definitely need to mask out the high bits, as RM0008 doesn't
specify that they read as zero. Calling this function seems to crash
the board, though. I'm not sure why, especially since
usb_set_ep_tx_count(), used by usb_cdcacm.c, seems to work.
Confusing.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Mark internal state static. Properly reset the RX/TX state on USB
reset. Choose better names for countTx and newBytes.
Move the exposed configuration back into the .c; this information is
not beneficial to hooks.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Actually fill the TX buffer in the packet memory area, so we can send
more bytes per transaction. Using the test-session benchmark, we're
now clocking in the high 700KB/sec range via PySerial. With screen,
rate is now about 550 KB/sec.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Rename USB_Line_Coding to usb_line_coding, and rename its fields to
match the spec to aid searches. Alter the line_coding global to match,
fixing an incorrect comment and avoiding magic numbers.
Other minor fixups and comment improvements.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This keeps things in line with the specification, helping readability.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Finally!
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Use usb_cdcacm hooks to move the DTR edge and "1EAF" magic packet
detection to usb_serial.cpp. We'll later be able to extend this system
to support Leonardo-style reset signalling.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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We need this so the bootloader reset signal detector can look ahead in
the byte stream without stealing bytes from the user when "1EAF" isn't
received.
While we're doing this, take the time to fix a bunch of RX-related
code (dead code removal, adding volatile, etc.)
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Sigh.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Provide hooks so users can reach into the CDC ACM callbacks with their
own code. We'll use this to move the bootloader reset signals to
Wirish.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Mark the API as unstable so people don't rely on these too hard. (This
header is not part of the official libmaple docs). We'll need some of
this configuration elsewhere later, and it doesn't make much sense to
expose it piecemeal.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Not sure what the comment above the new TODO is supposed to mean, but
it looks like something that should be checked.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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The disc pin code was copy-pasted when the CDC ACM pieces were
extracted from the rest of the USB code, and I didn't really
understand what was going on when I moved it over. Having checked the
spec, the comments can be safely improved.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@lozenge.(none)>
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Also, assert copyright LeafLabs 2012.
Signed-off-by: Marti Bolivar <mbolivar@lozenge.(none)>
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Signed-off-by: Marti Bolivar <mbolivar@lozenge.(none)>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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- Shut Doxygen up in various places
- Fix some genuine docs bugs
- Ignore sources we're not responsible for
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Rip out the existing nonportable pieces, and shove them under
wirish/stm32f1, using weak symbols so users who only want libmaple
proper don't end up with build errors. Add stubbed-out (and only
partially functional) definitions for F2 targets under wirish/stm32f2.
The behavior on F103 targets is the same as it was before (though the
assertion framework has always been broken and badly needs
replacement, that awaits another commit). We additionally now skip
re-enabling USB on F1 targets without USB, to make things work on
value line MCUs.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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We can implement it in terms of _i2c_bus_clk() instead of hard-coding
STM32_PCLK1.
This might be overkill, since I2C peripherals are slow and thus likely
to be on APB1 for all STM32 devices (that is the case for F2/F4, for
instance), but if we're going to have _i2c_bus_clk(), we might as well
respect it.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This won't work on F2, which at times has SDA and SCL on different
ports (e.g. I2C3 SDA on PC9, SCL on PA8). Add .sda_port and .scl_port
replacements, which are used when the now-deprecated .gpio_port is
null. Use them correctly everywhere, with some new i2c_private.h
helper functionality.
Sigh. The F1 I2C code tries too hard to guess what you wanted; it's
not porting well at all.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This should help avoid surprising some users.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Do this via new private _i2c_set_ccr_trise().
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This is ad-hoc and nonportable. If you really want I2C mapped
elsewhere, then mess with the I2C device fields and call afio_remap()
yourself. (This is also cleaner for F2).
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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The IRQ priority hack is unnecessary on targets with properly
functioning I2C IRQ handlers, so we shouldn't use it unless we have
to. Add a mechanism so a series header can provide such a hack if
necessary. Have the F1 series header use this mechanism.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Move private API to bottom of file.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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I'm going to be moving a lot of code around without changing it soon,
so git blame will be unreliable.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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These are necessary to pull out some calls to gpio_set_mode().
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Existing Doxygen was commenting I2C_IRQ_ERROR instead of
i2c_enable_irq(), as desired.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Calling throb() directly like that breaks the abstraction.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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I'm not sure these functions should even exist in their present form,,
but I don't understand the code well enough to make a real fix. For
now, just replace references to RM0008 with "chip reference manual".
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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i2c_set_input_clk()'s documentation says that the maximum peripheral
clock frequency is 36 MHz, but that's a hard-coded magic number. The
actual limit is the device's APB frequency or 46 MHz, whichever is
lower (F2 and F4 share the 46 MHz limit).
Fix the documentation to reflect that fact, and add an internal
series-provided function to get the maximum clock frequency for a
device. To help users porting to F2, have i2c_set_input_clk()
assert-check that the provided frequency is less than that maximum
value and the hard 46 MHz limit.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This is necessary to add series-specific infrastructure to clean up
some F1-isms in <libmaple/i2c.h>'s inline functions.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Bring back <libmaple/i2c.h> support on STM32F1 with a view towards how
it'll be implemented on STM32F2. There are still many F1-isms in
libmaple/i2c.c and <libmaple/i2c.h>, to be dealt with subsequently.
Move device declarations and base pointer definitions to a new F1
<series/i2c.h>. The register maps and bit definitions themselves are
identical on both series, so leave them in the libmaple header.
Add i2c_private.h, which contains:
- I2C_DEV(), a convenience macro for defining an i2c_dev, and
- declarations for the event and error IRQ handlers.
The IRQ handlers are large, and I2C is slow anyway, so I see no reason
to make them inline in the private header (as we do for some other
peripherals). We just expose the existing ones that were formerly
static in libmaple/i2c.c, but prefix the names with underscore.
Move the device declarations and IRQ handlers into new
stm32f1/i2c.c. These use the i2c_private.h API.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Put CCR definitions after SR2, to keep them in register map order.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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