Commit Graph

1288 Commits

Author SHA1 Message Date
Benoît Thébaudeau
1cd3c9e7e5 cc2538: Initialize .data/.bss using ROM functions
This is safer because the previous code assumed that the start and end
VMAs of .data and .bss were word-aligned, which is not always the case,
so the initialization code could write data outside these sections. The
ROM functions support any address boundary.

This is faster because the ROM functions are ultra optimized, using
realignment and the LDM/STM instructions, which is much better than the
previous simple loops of single word accesses.

This is smaller because the ROM functions don't require to add any code
to the target device other than simple function calls.

This makes the code simpler and more maintainable because standard
functions are not reimplemented and no assembly is used.

Note that this is also faster and smaller than the corresponding
functions from the standard string library.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-05-23 18:50:52 +02:00
Benoît Thébaudeau
609c615303 cc2538: Move the stack out of .bss
The initialization code clearing .bss is allowed to use the stack, so
the stack can not be in .bss, or this code will badly fail if it uses
the stack.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-05-23 18:50:52 +02:00
Benoît Thébaudeau
0de729572b cc2538: Word-align .data LMA
In order to be fast, the reset_handler() function uses word accesses to
initialize the .data output section. However, most toolchains do not
automatically force the alignment of an output section LMA to use the
maximum alignment of all its input sections. Because of that, assuming
that .data contains some words, the LMA of the .data output section was
not word-aligned in some cases, resulting in an initialization performed
using slow unaligned word accesses.

This commit forces the alignment of the LMA of the .data output section
with a word boundary in order to always use fast aligned word accesses
to read the .data load area.

Note that this solution is better than using ALIGN_WITH_INPUT, both
because the latter is a new feature incompatible with older toolchains,
and because it could create a big gap between _etext and the LMA of
.data if strongly-aligned data were added to .data, although only a word
alignment is required here.

The same considerations apply to the VMA of .data. However, it is
already automatically word-aligned, both because .data contains words,
and because the end VMA of the previous output section (.socdata) is
word-aligned. Moreover, if the VMA of .data were forcibly word-aligned,
then a filled gap could appear at the beginning of this section if
strongly-aligned data were added to it, thus wasting flash memory.
Consequently, it's better not to change anything for the VMA of .data,
all the more it's very unlikely that it does not contain any word and
that the end VMA of .socdata becomes non-word-aligned, and this would
only result in a slower initialization.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-05-23 18:12:54 +02:00
Benoît Thébaudeau
0d260f61a0 cc2538: Fix .data LMA/VMA mismatch with some toolchains
Some toolchains, like Sourcery CodeBench Lite 2013.05-23 arm-none-eabi
(http://sourcery.mentor.com/public/gnu_toolchain/arm-none-eabi/)
automatically force the alignment of an output section LMA to use the
maximum alignment of all its input sections. This toolchain uses GNU
binutils 2.23, and this automatic behavior is the same as the manual
behavior of the ALIGN_WITH_INPUT feature of GNU binutils 2.24+.

This behavior is not an issue per se, but it creates a gap between
_etext and the LMA of the .data output section if _etext does not have
the same alignment, while reset_handler() initialized this section by
copying the data from _etext to its VMA, hence an offset in the
addresses of loaded data, and missing data.

This commit fixes this issue by making reset_handler() directly use the
LMA of the .data section using LOADADDR(.data), rather than assuming
that _etext is this LMA.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-05-23 18:12:53 +02:00
Antonio Lignan
2cee62eb33 Merge pull request #1074 from g-oikonomou/cc26xx/contrib/new-cc26xxware
Update to latest CC26xxware and add it as a submodule
2015-05-21 10:01:00 +02:00
Ulf Knoblich
d8efa8428c cc2538: Allow for configuration of processor speed 2015-05-19 18:55:55 +02:00
Adam Dunkels
730bda2001 Merge pull request #883 from cmorty/pull/global-macros
Move MAX, MIN and ABS to contiki-macros
2015-05-18 21:33:00 +02:00
Ulf Knoblich
a388a1bcd7 CC2538: added support for SSI1 2015-05-18 10:02:55 +02:00
Moritz 'Morty' Strübe
0dab6926b3 Move MAX, MIN and ABS to sys/cc.h 2015-05-18 08:53:17 +02:00
George Oikonomou
5d20e76346 Adjust the build system to use CC26xxware as a sub-module 2015-05-17 15:01:01 +01:00
George Oikonomou
40e82395c4 Pull CC26xxware as a submodule 2015-05-17 15:01:01 +01:00
George Oikonomou
b4067560ba Remove references to obsolete peripheral clock scaling functions 2015-05-17 15:01:01 +01:00
George Oikonomou
ab4249a709 Adjust retention calls
* Rename VIMS-related calls
* Remove obsolete ones
2015-05-17 15:01:01 +01:00
George Oikonomou
b38d32b281 Rename AON WUC power status macros 2015-05-17 15:01:01 +01:00
George Oikonomou
8673bbdd55 Update linker script to accommodate for larger CCFG size 2015-05-17 15:01:00 +01:00
George Oikonomou
09a8c54eb1 Update CC26xxware glue macros
* Remove references to removed functions
* Add macros to new functions
* Rename macros to renamed functions
* Add macros for the HAPI
2015-05-17 14:09:52 +01:00
George Oikonomou
5f4154a0e3 Adjust AON BatMon usage 2015-05-17 14:09:51 +01:00
Benoît Thébaudeau
25532e8abf Merge pull request #754 from wwhuang/master
[CC2538] Fix SPI_FLUSH
2015-05-16 20:55:30 +02:00
Antonio Lignan
e8b1a57ac6 Merge pull request #809 from cmorty/pull/msp430_gstabs
[MSP430] Add gstabs debug information (dwarf is broken)
2015-05-16 11:01:47 +02:00
Antonio Lignan
32afadea77 Merge pull request #1047 from g-oikonomou/cc26xx/contrib/lpm
CC26xx Ultra Low Power Operation
2015-05-16 10:27:22 +02:00
George Oikonomou
1cf37e0c1a Tidy-up code style 2015-05-15 23:36:54 +01:00
George Oikonomou
78d04f812b Fix typo in macro 2015-05-15 09:21:05 +01:00
George Oikonomou
07272b7cd6 Improve UART power-cycling logic:
* Only enable TX by default.
* Add some magic for RX handling. When an input handler is registered:
  * Automatically enable RX-related and interrupts
  * Automatically lock the SERIAL PD on under all power modes
  * Automatically enable the UART clock under sleep and deep sleep
  * Automatically undo all of the above when the input handler becomes NULL
  * As a result, modules / examples that need UART RX no longer need to clock the UART and manipulate the SERIAL PD. They simply have to specify an input handler
* Don't automatically power on the UART whenever the CM3 is active
* Before accessing the UART, make sure it is powered and clocked
* Avoid falling edge glitches
* Fix garbage characters / Explicitly wait for UART TX to complete
2015-05-15 09:21:04 +01:00
George Oikonomou
34f52ed08e Improve the LPM module:
* Implement new style of PD locks
* Use our own shutdown sequence rather than the one provided by cc26xxware
* Shutdown from within the interrupt that requested it. This allows shutdown to take place even if the code is stuck in a loop somewhere else
* Improve DCDC/GLDO/uLDO switching logic
* Explicitly handle oscillators and retentions
2015-05-15 09:21:04 +01:00
George Oikonomou
eb5b11a85a Re-order instructions in the RTC startup sequence 2015-05-15 09:21:03 +01:00
George Oikonomou
421fbfae25 Change the LPM locks API:
Instead of using a separate data structure to request that a PD remain powered during deep sleep,
we do the same within the main LPM data structure through an additional field.

This allows us to maintain only one linked list of LPM modules and overall improves code clarity
2015-05-15 09:21:02 +01:00
George Oikonomou
b3ac3ac0c1 Add function to unregister a module from LPM 2015-05-15 09:21:02 +01:00
George Oikonomou
cf99160706 Change lpm_shutdown() API call:
So that the caller can specify pin pull and wakeup state
2015-05-15 09:21:01 +01:00
George Oikonomou
5644e95fb6 Fix global interrupt manipulation 2015-05-15 09:21:00 +01:00
George Oikonomou
bd79e18e1e Switch between oscillator's using the dedicated module's functions 2015-05-15 09:21:00 +01:00
George Oikonomou
ad52d68a0c Add function to configure a pin to a default state 2015-05-15 09:21:00 +01:00
George Oikonomou
3877190196 Change function to static 2015-05-15 09:21:00 +01:00
George Oikonomou
3bbf3cc435 Add SysCtrl glue macros 2015-05-15 09:20:57 +01:00
George Oikonomou
8a42af682d Make sure PERIPH is on before accessing GPT registers 2015-05-15 09:20:57 +01:00
George Oikonomou
9d97dee00b Clock the GPT module only when we need it 2015-05-15 09:20:57 +01:00
George Oikonomou
b7e7d48f0b Add oscillator control wrappers 2015-05-15 09:20:56 +01:00
Brad Campbell
3b6d9e5a64 mc1322x: remove rest tutorial
This tutorial was written for the older implementation of CoAP, and
while it may be possible to update it, the directions include URLs and
repos that no longer exist, so it's better to just remove it.
2015-05-14 17:20:46 -04:00
Benoît Thébaudeau
c9324d133f Merge pull request #1060 from g-oikonomou/cc26xx/contrib/ihex
Produce ihex files usable with TI's Flash Programmer
2015-05-14 19:24:36 +02:00
Benoît Thébaudeau
d64927397f Merge pull request #968 from g-oikonomou/cc2538-contrib-on-chip-sensors
Move CC2538 VDD/3 and On-Chip Temp sensors to the CPU dir
2015-05-14 19:21:56 +02:00
Benoît Thébaudeau
71f22b1775 Merge pull request #966 from g-oikonomou/cc2538-startup-to-cpu-dir
Move cc2538 startup-gcc.c to the CPU dir
2015-05-14 18:43:39 +02:00
George Oikonomou
69c4f19336 Produce ihex files usable with TI's Flash Programmer 2015-05-14 13:22:11 +01:00
George Oikonomou
f7baf5aba2 Change CC2538 USB and UART handlers to weak 2015-05-13 01:31:26 +01:00
George Oikonomou
96e1647270 Move cc2538 startup-gcc.c to the CPU dir 2015-05-13 01:31:10 +01:00
George Oikonomou
3717522680 Re-work the CC2538 driver to be a driver for the Srf06 ALS only 2015-05-12 23:42:19 +01:00
George Oikonomou
06b0ee4a8b Include CC2538 sensors in the build 2015-05-12 23:42:19 +01:00
George Oikonomou
9cc800d728 Add CC2538 VDD sensor driver 2015-05-12 23:42:19 +01:00
George Oikonomou
f474514ee5 Add CC2538 tmp sensor driver 2015-05-12 23:42:19 +01:00
George Oikonomou
40716ab515 Add generic header for CC2538 sensors 2015-05-12 23:42:18 +01:00
George Oikonomou
cf1f722a93 Merge pull request #1045 from g-oikonomou/cc26xx/contrib/cc26xx-rf-wakeup
Fix "CC26xx delayed wakeup after RF TX" bug
2015-05-09 22:50:50 +01:00
George Oikonomou
bd5e35c968 Merge pull request #1052 from simonduq/packetbuf-cleanup
Packetbuf cleanup
2015-05-09 22:30:21 +01:00