This patch revises the I2C and GPIO initialization code to always be
run during platform boot rather than within each process that requires
it.
This patch also revises the gpio-output example to use a pin that is
set as an output by the default pinmux configuration. Previously, it
used a pin that was set as an output by the pinmux configuration that
is in effect when the OS does not change the pinmux configuration.
This patch permits interrupts to be generated by both the I2C and GPIO
controllers for simultaneously-executing applications. The controllers
share a single interrupt pin, INTC. Prior to this patch,
quarkX1000_gpio_init() routed INTA to PIRQC and IRQ 10 (due to an
incorrect assumption that INTA is connected to the GPIO controller),
and quarkX1000_i2c_init() routed INTC to PIRQC and IRQ 9. The I2C
controller initialization is a prerequisite for GPIO initialization,
so the final configuration was that INTA and INTC were both routed to
PIRQC and IRQ 10. Thus, only the GPIO ISR was being invoked, even if
the I2C controller was actually responsible for the interrupt.
This patch refactors the I2C and GPIO ISR setup and handler code so
that the shared portions are combined in
cpu/x86/drivers/legacy_pc/shared-isr.[ch]. The I2C and GPIO drivers
communicate their interrupt information to the shared component by
placing structures in a specific section of the binary.
Directories listed in this variable are added to include and
source (vpath) search paths.
Contents of this variable aren't automatically prefixed with
Contki root. This allows for inclusion of folders that are
outside Contiki root.
When SICSLOWPAN_FRAMER_HDRLEN is defined its value is used
as a frame header length. This allows for using sicslowpan
without calling a framer. This is usefull if framer is not
used on a given platform or when header length is always
the same.
In addition this commit also fixes an inline define.
Make Travis CI use the GNU ARM Embedded toolchain version specified by
the READMEs, instead of automatically using the latest version provided
by the PPA. In this way, the READMEs will still be correct after a PPA
upgrade, and the version used by Contiki is under control.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
