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1502 commits

Author SHA1 Message Date
Andre Guedes e28f400e0c x86: Introduce interrupt.h
This patch introduces the interrupt.h header file which provides some
helper macros to set a interrupt handler and disable/enable maskable
hardware interrupts.

Since there is no easy way to write an Interrupt Service Routines
(ISR) in C (for further information on this, see [1]), we introduce
the SET_INTERRUPT_HANDLER helper macro.

The macro does two things:
1) Defines an assembly trampolin to a C function that will, indeed,
   handle the interrupt.
2) Sets the corresponding interrupt gate descriptor in IDT.

The macro usage is pretty straightforward. The macro is defined as
SET_INTERRUPT_HANDLER(num, has_error_code, handler) where:
@num:             Interrupt number (0-255)
@has_error_code:  0 if processor doesn't push error code onto the
                  stack. Otherwise, set this argument to 1.
@handler:         Pointer to function that should be called once the
                  interrupt is raised. In case has_error_code == 0
                  the function prototype should be the following:
                  void handler(void)
                  Otherwise, it should be:
                  void handler(struct interrupt_context context)

For instance, let's say we want to set a handler for a device interrupt
(for example, interrupt number 101). Remember, hardware interrupts don't
have error code. So we should have something like this:

void interrupt_handler(void)
{
        /* Handling code here */
}

void my_device_init(void)
{
        ...

        SET_INTERRUPT_HANDLER(101, 0, interrupt_handler);

        ...
}

Now, let's say we want to set an interrupt handler for Page Fault
(interrupt number 14). Some exceptions, such as Page Fault, pushes an
error code onto the stack and may require registers values in order
to be properly be handled. Thus, the code should look like this:

void pagefault_handler(struct interrupt_context context)
{
        /* Handling code here */
}

void init_memory(void)
{
        ...

        SET_INTERRUPT_HANDLER(14, 1, pagefault_handler);

        ...
}

For further information about exceptions and error code, refer to Intel
Combined Manual, Vol. 3, Sections 6.3 and 6.13.

Finally, we don't define any API to unregister interrupt handlers since
we believe that it wouldn't be useful at all, at least at this moment.
Considering Contiki's context, interrupt handler registration is pretty
"static" and defined at compile-time by platform code (or the device
drivers used by the platform).

[1] http://wiki.osdev.org/Interrupt_Service_Routines
2015-12-21 08:06:14 -02:00
Andre Guedes f6644d9208 x86: CPU Initialization
This patch defines the cpu_init() function which should encapsulate
all code related to x86 CPU initialization. For now, this function
initializes GDT and IDT.
2015-12-21 08:06:14 -02:00
Andre Guedes 13d92cf67a x86: Initialize Interrupt Descriptor Table
This patch adds code to handle Interrupt Descriptor Table (IDT)
initialization. The IDT is initialized with null descriptors
therefore any interrupt at this point will cause a triple fault.
The IDT initialization is part of x86 CPU initialization.

Strictly speaking, there is no need to use attribute packed in struct
intr_gate_desc however we use it for readability reasons.
2015-12-21 08:06:14 -02:00
Andre Guedes b8feaea30d x86: Add helpers.h
This patch adds the helpers.h. This file should contain only x86-related
helper functions and macros. For now, we define the BIT macro and halt()
helpers which will be used in upcoming patches.

Additionally, this patch also changes loader.S to call the halt().
2015-12-21 08:06:14 -02:00
Andre Guedes 41bca35c1e x86: Initialize Global Descriptor Table
This patch adds code to initialize the Global Descriptor Table. For
simplicity, the memory is organized following the flat model. Thus,
memory appears to Contiki as a single, continuous address space. Code,
data, and stack are all contained in this address space (so called
linear address space).

The macros to manipulate bits from segment descriptor and the
set_descriptor() helper are based on the ones described in [1].

[1] http://wiki.osdev.org/GDT_Tutorial
2015-12-21 08:06:14 -02:00
Andre Guedes 7e13081776 galileo: Print elf sections sizes after build
This patch changes Galileo's buildsystem to print the elf sections
sizes after a new image is built. This way we can easily track how
these sections increase or decrease after any change.

To achieve that, we define a custom linking rule which is pretty much
the same as the default linking rule define in Makefile.include, but
we run 'size' command after the image is built.
2015-12-21 08:06:14 -02:00
Jesus Sanchez-Palencia 3a26d9dbc7 x86: Only add elfloader-x86.c to the platforms using it
Currently there are only one platform using CPU x86: Cooja. The
elfloader-x86.c is rather a POSIX implementation, so the Galileo port
won't use it for now. This patch fixes this by moving this source file to
be included by the platforms using it instead of the cpu's Makefile.
2015-12-21 08:06:14 -02:00
Jesus Sanchez-Palencia 5a0e2a7654 x86: Fix missing include warning due to memset usage 2015-12-21 08:06:14 -02:00
Andreas Dröscher 31230a856e Implement generic Newlib syscalls 2015-12-16 19:50:49 +01:00
Antonio Lignan af35e04ad7 Merge pull request #1419 from bthebaudeau/cc2538-pwm-lpm-register-peripheral
cc2538: pwm: Fix clock and automatically disable PM1+ if running
2015-12-14 02:25:54 -06:00
Benoît Thébaudeau 4a6e19ed38 cc2538: pwm: Automatically disable PM1+ if running
The peripheral core clocks of the PWM timers are gated in PM1+, so these
power modes must be disabled if a PWM timer is running. Use
lpm_register_peripheral() to handle this automatically and dynamically.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-12-13 02:39:55 +01:00
Benoît Thébaudeau 9c6d9a7fe0 cc2538: pwm: Fix clock
The peripheral core clock of the general-purpose timers used by the PWM
driver is the system clock, not the I/O clock.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-12-13 02:39:39 +01:00
Benoît Thébaudeau 5b1457e4ab cc2538: Fix stack alignment
According to the Procedure Call Standard for the ARM Architecture
(AAPCS) - ABI r2.09 [1], §5.2.1.2, the stack pointer must be
double-word-aligned at a public interface. The stack implementation
being full-descending, this requires that the top of stack be
double-word-aligned too.

[1] http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042e/IHI0042E_aapcs.pdf

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-12-12 22:33:05 +01:00
Simon Duquennoy 4302e23ddc Merge pull request #1285 from simonduq/pr/tsch
TSCH + Basic 6TiSCH
2015-12-07 14:29:10 +01:00
Benoît Thébaudeau 648b6926b5 Merge pull request #1102 from bthebaudeau/cc2538-build-without-contiki-target-library
cc2538: Build without the Contiki target library
2015-12-05 00:42:31 +01:00
Benoît Thébaudeau 6166693a11 Merge pull request #1133 from bkozak-scanimetrics/cc-gcc
put gcc specific stuff into seperate .h
2015-12-05 00:39:59 +01:00
Simon Duquennoy 20c97367a9 Adding definitions required for TSCH to the sky and z1 platforms 2015-12-04 15:21:53 +01:00
George Oikonomou 27835eee2c Merge pull request #1399 from alignan/pull/pwm-driver
Added PWM driver for the Zolertia Zoul module and CC2538 platforms
2015-12-02 15:39:52 +00:00
Simon Duquennoy ebc8d9fb1c Merge pull request #1344 from tsparber/fix-doxygen
doxygen: Fixed all warnings
2015-11-30 22:07:15 +01:00
Antonio Lignan e47b309536 Added note in PWM driver and example about PM0 2015-11-30 09:43:35 +01:00
Nicolas Tsiftes 6def22b3c5 Merge pull request #1376 from sumanpanchal/wismote-uart1-dma
Wismote : Direct memory access using UART.
2015-11-26 11:08:43 +01:00
Antonio Lignan 37fcb927be Added PWM driver for the Zolertia Zoul module and CC2538 platforms 2015-11-25 23:56:29 +01:00
Marco Grella e47c69c170 Merge remote-tracking branch 'upstream/master' into stm32nucleo-spirit1 2015-11-25 12:36:01 +01:00
George Oikonomou 41ea0308a3 Merge pull request #1390 from tsparber/fix-doxygen-whitespace
Cleanup some trailing spaces and convert tabs to spaces
2015-11-22 11:53:01 +00:00
Antonio Lignan 6e481d56fa Merge pull request #1162 from bthebaudeau/cc2538-add-coffee
cc2538: Add support for Coffee
2015-11-21 07:51:32 +01:00
Benoît Thébaudeau 5d98cb71e2 cc2538: Add support for Coffee
Coffee is placed by default at the beginning of the flash memory, right
before the firmware. This avoids the memory gaps that there could be
before and after Coffee if it were placed after the firmware, because it
is unlikely that the end of the firmware is aligned with a flash page
boundary, and the CCA is not flash-page-aligned. Thanks to that, Coffee
is also always in the same flash area if its size remains unchanged,
even if the firmware changes, which makes it possible to keep the Coffee
files when reprogramming the firmware after a partial flash erase
command.

The default configuration of Coffee is set to use sensible values for a
typical usage on this SoC, i.e. for sensor data logging.

The default size of Coffee is set to 0 in order not to waste flash if
Coffee is unused.

COFFEE_CONF_CUSTOM_PORT can be defined to a header file to be used with
"#include" in order to override the default CC2538 port of Coffee. This
makes it possible to use Coffee with an external memory device rather
than with the internal flash memory, without having to alter the Contiki
files.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-11-19 01:22:58 +01:00
Benoît Thébaudeau ee3ee049e4 cc2538: Set the entry point to the CCA
No entry point was defined, so it defaulted to the beginning of the
.text output section where the vector table is located by default in
Contiki. Actually, the vector table may be located elsewhere, and the
ROM-based boot loader first reads the CCA to find the vector table.

Consequently, this commit sets the entry point to the CCA, which fixes
both the entry point and the initial symbol reference, so this commit
also removes the now-unneeded "__used__" and "KEEP" keywords from the
CCA.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-11-19 01:18:34 +01:00
Benoît Thébaudeau 96dd24836c cc2538: Use &vectors instead of flash/.text start address
The current CC2538 linker script in Contiki places the vector table at
the beginning of the flash memory / .text output section. However, this
location is arbitrary (the only requirement is that the vector table is
512-byte aligned), and custom linker scripts may be used with Contiki,
which means that Contiki may be used with a vector table placed
elsewhere. Thus, using the flash/.text start address in the CCA and as
the default NVIC VTABLE value was wrong.

This commit rather uses the address of the vectors[] array from
startup-gcc.c, which makes it possible to freely move around the vector
table without breaking anything or having to use a custom startup-gcc.c
and to configure the NVIC driver for that. Moreover, referencing the
vectors[] array naturally prevents it and its input section from being
garbage-collected by the linker, so this commit also removes the
now-unneeded "used" and "KEEP" keywords from the vector table.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-11-19 01:18:33 +01:00
Benoît Thébaudeau a191fcdb84 cc2538: nvic: Simplify VTABLE configuration
The only thing needed for VTABLE is the absolute address of the vector
table. Splitting it between code/SRAM base and offset complicates things
and brings nothing.

Consequently, this commit merges the NVIC VTABLE configurations into a
single one giving the vector table absolute address.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-11-19 01:18:33 +01:00
Benoît Thébaudeau efb4b858e2 cc2538: Define the flash memory organization
Define the flash memory page and word sizes. These definitions are
grouped with the flash lock bit page and CCA definitions, so flash-cca.h
is renamed to flash.h.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-11-19 01:18:33 +01:00
Benoît Thébaudeau 790c253d6d cc2538: Define and use device features
Define the available CC2538 devices and their features, and use them to
define the linker script memory regions. The .nrdata output section is
now always defined in order to trigger an error if it is used but no
memory is available for it. The CC2538 device used by Contiki is made a
configuration option, the CC2538SF53 device being the default.

This makes more sense than defining the flash memory address and size as
configuration options like previously, all the more not all values are
possible and all the features are linked by each device.

This change also makes it possible to:
 - use the correct SRAM parameters for the CC2538NF11,
 - know at build time if the AES, SHA, ECC and RSA hardware features are
   available on the selected CC2538 device.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-11-19 01:18:33 +01:00
Tommy Sparber 938a425949 Cleanup trailing spaces and convert tabs to spaces
This commit removes trailing spaces and converts
tabs to spaces in all files affected by fix-doxygen PR.
2015-11-18 11:09:43 +11:00
Tommy Sparber 938d17576b doxygen: Fix many warnings
This commit fixes nearly all of the reported doxygen warnings.

I tried to not clutter the log with removed trailing spaces.
Removed whitespace and converted tab/spaces for all files affected by this commit
are in a separate branch.
2015-11-18 11:07:58 +11:00
suman_panchal 8d139222f6 Wismote : Direct memory access using UART. 2015-11-17 20:26:43 +05:30
George Oikonomou b4393e861f Only set CC13xx prop mode channel if a new channel is being requested 2015-11-14 01:38:24 +01:00
George Oikonomou 320a753666 Turn CC13xx RF back off after prop TX if it was off to start with 2015-11-14 01:38:24 +01:00
George Oikonomou e0e20aa3fd Turn off ENERGEST_TYPE_LISTEN in CC13xx prop mode off() 2015-11-14 01:38:24 +01:00
Marco Grella 41f9ca08e2 Merge with updated master. 2015-11-11 13:42:35 +01:00
Simon Duquennoy fbd78a7e3b Merge pull request #1293 from simonduq/pr/fix-warnings
Fix a number of compiler warnings and enable -Werror in Travis
2015-11-10 08:49:11 +01:00
George Oikonomou a63efe947f Merge pull request #1233 from adamdunkels/pr/26xx-13xx-fixes
CC26xx/CC13xx fixes
2015-11-09 08:33:58 +00:00
George Oikonomou 3aa4547327 Merge pull request #1257 from bkozak-scanimetrics/cc26xx_fully_turnoff_radio
CC26xx - fully shutdown the rf-core & abort rx op
2015-11-04 15:45:05 +00:00
Antonio Lignan 6037e269a8 Merge pull request #1336 from sumanpanchal/z1-uart0-dma
Zolertia Z1: Direct memory access using UART.
2015-11-02 08:47:08 +01:00
George Oikonomou 54648591ee Explicitly send CMD_ABORT in prop mode before powering down 2015-11-01 22:53:35 +00:00
Oliver Schmidt 9962d0720a Merge pull request #1347 from oliverschmidt/master
Removed CC_FASTCALL.
2015-11-01 19:36:07 +01:00
Oliver Schmidt 1639b712bb Removed CC_FASTCALL.
CC_FASTCALL was introduced many years ago for the cc65 tool chain. It was never used for another tool chain. With a798b1d648 the cc65 tool chain doesn't need CC_FASTCALL anymore.
2015-11-01 18:10:17 +01:00
Oliver Schmidt 692fbf5422 Merge pull request #1343 from oliverschmidt/master
Added 80 column IRC client / web browser for the C64.
2015-10-31 15:18:10 +01:00
suman_panchal 35cc40563e Zolertia Z1: Direct memory access using UART. 2015-10-31 11:45:13 +05:30
Oliver Schmidt fb5d0b7ef0 Made 80 column display a cc65 application attribute.
So far 80 column display was an attribute of a cc65 platform. Now each cc65 application can ask for 80 column display by defining WITH_80COL. Of course this is ignored by platforms incapable of 80 column display.

I see three types of application:

* Applications not benefitting from 80 column at all and in fact looking better with 40 column display. These are now using 40 column display. Examples: ethconfig, ipconfig

* Applications taking advantage of 80 column display if it is available without drawbacks. These stay as they were. Examples: Telnet server, web server, wget

* Applications needing 80 column display so urgently that it is likely desirable even if the display becomes harder to read. These come now in both flavors allowing the user to choose. Examples: IRC, web browser

Note: This change doesn't actually introduce any 80 column display with drawbacks. This if left to a subsequent change.
2015-10-30 12:42:58 +01:00
George Oikonomou 3e0f37090c Merge pull request #1324 from msloth/master
Remove LED fade in lpm.c
2015-10-29 11:36:39 +00:00
Marcus Linderoth 1906bff17c allow lpm_shutdown without a wake-up pin set 2015-10-28 11:06:26 +01:00
Marcus Linderoth ea7a5d1c63 Remove fade away of LED when going into shutdown mode; it consumes power and is application-layer stuff. 2015-10-28 10:51:37 +01:00
Benoît Thébaudeau bf41de1be5 Merge pull request #1078 from drandreas/cc2538-crypto
cc2538: Add PKA drivers, ECC algorithms and examples
2015-10-21 11:24:35 +02:00
Simon Duquennoy 2daa3d7377 Merge pull request #1269 from tadodotcom/tmp-uip-fallback-iface
More flexibility for the fallback interface
2015-10-20 11:33:14 +02:00
Simon Duquennoy ca8fe618e7 cc2420 and cc2430: add comment on why we discard tbiv 2015-10-20 10:11:49 +02:00
Simon Duquennoy f49b161795 Remove commented-out code 2015-10-20 10:11:47 +02:00
Adam Dunkels d48cf89e9b Fixed compiler warnings for the AVR platforms 2015-10-20 10:11:42 +02:00
George Oikonomou 2773a37857 Update CCxxwares to our warning-free version 2015-10-20 10:11:41 +02:00
Adam Dunkels 24b1eb4031 The -pedantic and -stdc flags trigger a few too many warnings 2015-10-20 10:11:35 +02:00
Adam Dunkels 4cab313b8c Fix compiler warnings 2015-10-20 10:11:34 +02:00
Adam Dunkels 06dfce6d46 The -pedantic and -stdc flags trigger a few too many warnings 2015-10-20 10:11:33 +02:00
Adam Dunkels 12a185f394 Added the WERROR=1 flag to the CC2538 and CC26xx CPUs 2015-10-20 10:11:23 +02:00
Simon Duquennoy a2b1934f03 mbxxx: added missing undefs 2015-10-20 09:37:28 +02:00
Simon Duquennoy ccfdf80ff2 Removed mbxxx warning messages on the current ld file in use 2015-10-20 09:37:27 +02:00
Simon Duquennoy 0340567af8 tapdev6.c: do not ignore return value of system() 2015-10-20 09:37:18 +02:00
Simon Duquennoy 2c91ab6fad linuxradio-drv.c: added missing include 2015-10-20 09:37:17 +02:00
Simon Duquennoy 01984f07c2 cc2420 and cc2430: removed compiler warning on unused tbiv 2015-10-20 09:37:16 +02:00
Simon Duquennoy 560d6af97b msp430x: do not compile mtarch, which currently assumes 16-bit function pointers 2015-10-20 09:37:15 +02:00
AntiCat d631270af4 cc2538: Add PKA drivers, ECC algorithms and examples 2015-10-18 20:14:17 +02:00
Marco Grella fc65757114 License headers and code style fixes. 2015-10-09 19:40:39 +02:00
Vladimir Pouzanov 2d75926989 Fixed linuxradio-drv guard macro name 2015-09-29 12:29:08 +01:00
Simon Duquennoy 6d4f50e53a Merge pull request #1282 from farcaller/nativenet
Basic NETSTACK_CONF_RADIO based on kernel 802.15.4
2015-09-28 19:30:38 +02:00
Mariano Alvira ff7129dc53 Merge pull request #881 from drugo72/avr-fixes
Avr fixes
2015-09-28 09:41:21 -05:00
Vladimir Pouzanov bd1b7d9814 Fixed linuxradio compilation issues with native and minimal-net 2015-09-28 12:48:01 +01:00
Vladimir Pouzanov 4c8618e6ba Extracted linuxradio device name to contiki-conf 2015-09-28 12:48:00 +01:00
Vladimir Pouzanov 52c90519d9 Fixed missing #includes and restricted linuxradiodrv compilation to linux 2015-09-28 12:48:00 +01:00
Vladimir Pouzanov 43a327df5a Cleaned up and re-formatted source of linuxradiodrv 2015-09-28 12:47:12 +01:00
Vladimir Pouzanov 113d9761f7 Better failure handling in linuxradiodrv 2015-09-28 12:47:12 +01:00
Vladimir Pouzanov 5fed4a3f1c Using MAX_PACKET_SIZE where appropriate in linuxradiodrv 2015-09-28 12:47:12 +01:00
Vladimir Pouzanov beef4f5d5d Added better error handling to linuxradiodrv transmit() 2015-09-28 12:47:12 +01:00
Vladimir Pouzanov 8a068f8512 Cleaned up linuxradiodrv code 2015-09-28 12:47:12 +01:00
Vladimir Pouzanov 867368b929 Basic NETSTACK_CONF_RADIO based on kernel 802.15.4 2015-09-28 12:47:11 +01:00
Laurent Deru a58fa16cc6 Merge pull request #1252 from tadodotcom/cpu-native-ldflags-fix
Don't override LDFLAGS on Linux for the native CPU
2015-09-23 09:44:22 +02:00
Cristiano De Alti e51783a1d5 Most of the rules in the avr makefile are not used anymore
and should be removed. In the meantime we change those needed
to upload flash and eeprom to depend on the default contiki rule
to make the .$(TARGET) executable."
2015-09-22 23:32:17 +02:00
Billy Kozak 8e5f0bc36a Defining gcc specific macros in seperate header 2015-09-22 14:17:10 -06:00
Víctor Ariño 561e70b18e Updated current fallback_interface(s) to return int. 2015-09-22 12:53:04 +02:00
Billy Kozak 324d03b53c CC26xx - fully shutdown the rf-core & abort rx op
Prior to this patch, the ieee radio driver did not explicitly abort
the rx operation or power down the analog components of the radio
prior to shutting down the rf-core.

The result of this was that the rf-core continued to use a lot of
power even while "off".

This patch fixes this problem.
2015-09-14 13:18:01 -06:00
Mariano Alvira 552408b241 Merge pull request #685 from SmallLars/mc1322x
Added mc1322x functions: clock_set_seconds, soft_reset, nvm_verify
2015-09-13 12:35:53 -05:00
Mariano Alvira 1ddcdf4886 Merge pull request #839 from gebart/rf230-isr
rf230bb: Handle all IRQ flags in one ISR call. (Q: Is the current ISR valid?)
2015-09-13 12:06:36 -05:00
Mariano Alvira 050275293a Merge pull request #922 from atiselsts/rs230bb_fixes
Atmel 230bb: always increase the rx frame ringbuffer cursor in rf230_read()
2015-09-13 11:58:16 -05:00
Marco Grella 87970a88a4 Comments and documentation fixes. 2015-09-10 14:28:08 +02:00
Valentin Sawadski b729dc8985 Don't override LDFLAGS on Linux for the native CPU 2015-09-10 11:13:22 +02:00
Nicolas Tsiftes 8a7e2e5892 Merge pull request #1240 from atiselsts/energest_accuracy
Improve energest accuracy
2015-09-07 15:35:35 +02:00
George Oikonomou dd640cd229 Merge pull request #1195 from bkozak-scanimetrics/cc26xx_improve_watchdog
CC26xx - various fixes and improvements for the watchdog module
2015-09-04 17:20:50 +01:00
Marco Grella 17aafb9daa Align to current master 2015-09-04 17:01:04 +02:00
Atis Elsts 2f79810b58 Use ENERGEST_SWITCH to switch between different power modes to improve energest accuracy. 2015-09-04 11:46:00 +02:00
Billy Kozak b71353181d CC26xx - enable correct IRQ in rf_core_cmd_done_en
Fix for #1229

rf_core_cmd_done_en() was enabling the wrong irq for detecting the
completion of foreground operations. This was causing cc26xx devices
to not wake-up on time when calling lpm_sleep() from transmit().
2015-09-02 12:37:33 -06:00
Adam Dunkels 8d2dafbe30 No need to set the same channel again 2015-09-02 12:18:27 +02:00
Adam Dunkels 27e373492d Turn off energest listen in off() 2015-09-02 12:10:44 +02:00
Adam Dunkels f1c4a5ee08 Turn off radio again after transmitting 2015-09-02 12:10:07 +02:00
Adam Dunkels 8bcde2e40f Tickless bugfixes:
* The clock interrupt must be scheduled relative to the last interrupt, not relative to the current time (which may have progressed significantly)
* clock_time() must increase continuously, so that code that may be spinning around clock_time() will make progress, not only after each interrupt
2015-09-02 12:05:47 +02:00