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2574 Commits (ba14dee24206ce57b77d241eb30621be7fca374c)

Author SHA1 Message Date
Srod Karim 1adaeb4a44 increased bandrate range 2015-09-16 17:15:56 +02:00
Srod Karim 54e2dd02fe if no sleep modes are blocked, enter EM3 2015-09-16 17:15:54 +02:00
Srod Karim f9c1ca8e29 compatability for devices without LFXO or where LFXO is not the low energy clock source 2015-09-16 17:15:51 +02:00
Srod Karim c328fb068e DMA fix 2015-09-16 17:15:49 +02:00
Srod Karim f1e1977506 LEUART EM2 release 2015-09-16 17:15:46 +02:00
Srod Karim b832689ae0 various fixes - candidate release 2015-09-16 17:15:40 +02:00
Srod Karim 7746a4be75 set clocktrees, and enable DMA in EM2 2015-09-16 17:15:01 +02:00
Srod Karim 5a9464b26a branched block/unblock 2015-09-16 17:14:58 +02:00
Martin Kojtal 45d00c36b3 Merge pull request #1322 from dbestm/fix_rtos_support 
[NUCLEO_L476RG] add hal and target files
 2015-09-16 11:06:15 +01:00
Peter Conheeney 24ebe1790e changes for adding IoT Subsystem for Cortex-M target 2015-09-14 12:23:32 +01:00
adustm fbdf211df1 DISCO_F051R8: update device header file with the last STM32CubeF0 hal version 2015-09-11 17:10:43 +02:00
adustm d571b16e90 STM32F0 : Update targets after STM32F0 Cube HAL driver update 2015-09-11 15:07:42 +02:00
adustm f7caf72009 STM32F0 : update hal api files 2015-09-11 15:06:04 +02:00
adustm ae0891878a NUCLEO_F031K6 : add new target 2015-09-11 15:02:05 +02:00
adustm d9384660dc STM32F0 - Update Cube F0 HAL driver 2015-09-11 15:00:50 +02:00
James Crosby 985d87ba7e ignore target files not supported by the yotta module, to minimise published module size 2015-09-09 09:30:31 +01:00
hjjeon0608 481a9d97cc Merge branch 'master' of https://github.com/mbedmicro/mbed into mbed_dev2 2015-09-09 14:20:13 +09:00
hjjeon0608 5498c96161 Add files of WIZWIKI_W7500P platform in cmsis and hal folder. 2015-09-09 14:18:41 +09:00
tomoyuki yamanaka 5d7099994a Modify to support NEON for RTOS. (mbed common codes) 
We modified to support NEON of CMSIS-RTOS RTX for Cortex-A9 and fixed some bugs of it.
 2015-09-08 16:39:35 +09:00
tomoyuki yamanaka 7ea62c20b3 Modify to support NEON for RTOS. (mbed CMSIS HAL) 
We modified to support NEON of CMSIS-RTOS RTX for Cortex-A9 and fixed some bugs of it.
 2015-09-08 16:39:07 +09:00
hjjeon0608 1c607a6c7a UART 2 is enabled. 
Until now, only UART 0, 1 are enabled, but now UART 2 is also enabled.
W7500P should need UART 2 because DAP use UART 2.
 2015-09-08 08:44:22 +09:00
dbestm a6f4046e7b [NUCLEO_L476RG] add hal and target files 2015-09-07 14:01:17 +02:00
Wojciech Gorniak f22236b460 Defined RF pins. 
Conflicts:
	libraries/radio/SX127x/sx1272/sx1272-hal.cpp
	libraries/radio/SX127x/sx1272/sx1272-hal.h
 2015-09-07 12:13:34 +02:00
Martin Kojtal 40a175b168 Merge pull request #1321 from adfernandes/master 
Fix a signed and unsigned integer comparison warning
 2015-09-07 09:56:17 +01:00
Martin Kojtal bed6e15da6 Merge pull request #1320 from Sissors/lookmartinImadeanewbranch 
[HAL][K20XX] Fixed (possible) glitches when changing SPI mode on K20 …
 2015-09-07 09:55:18 +01:00
Martin Kojtal 748fea3057 Merge pull request #1316 from kpurusho/master 
Drivers for SAMD21
 2015-09-07 09:46:11 +01:00
Andrew Fernandes b2c122be4c Fix a signed and unsigned integer comparison warning 2015-09-06 17:59:04 -04:00
Sissors 7423bd3d7b [HAL][K20XX] Fixed (possibly) glitches when changing SPI mode on K20 MCUs 
Made register access bit nicer (not first clearing bit and then setting
it again if thats not required), and additionally when clock idle level
is changed, it writes out a dummy byte. Problem is only after a write
the idle level is changed, resulting in a clock glitch at the start
 2015-09-06 20:34:46 +02:00
akhilpanayam 799d2d61c3 * Updated cmsis files for KnR Coding Standards. 2015-09-04 16:10:35 +05:30
akhilpanayam 0223afcddd * updated year in ARM mbed license. 2015-09-04 15:59:43 +05:30
Martin Kojtal 92d1bfad30 Merge pull request #1318 from Wiznet/mbed_dev1 
Change directory structure and move files.
 2015-09-04 09:29:53 +01:00
Martin Kojtal a412b49ac5 Merge pull request #1315 from lindvalla/fix_llu35_lpcxpresso_issue 
Fixed linker script for LPCXpresso for EA LPC11U35 QuickStart Board
 2015-09-04 08:36:19 +01:00
Martin Kojtal 1f6eaa5e1d Merge pull request #1313 from fredlak/master 
FRDM KL43Z - Fix RTC init function for KL43Z
 2015-09-04 08:33:10 +01:00
Martin Kojtal a19d9e011d Merge pull request #1310 from masaohamanaka/master 
Modify the register setting method in the pin setting configuration.
 2015-09-04 08:02:30 +01:00
Pawel Rozanski feccab3e21 Full ELMO pin bindings. 2015-09-03 14:54:42 +02:00
Pawel Rozanski 4e1ca8fcad ELMO STDIO on UART 1. 2015-09-03 12:39:37 +02:00
Pawel Rozanski bb507ec099 ELMO's SPI aliases 2015-09-03 12:38:06 +02:00
Pawel Rozanski cde6461116 ELMO's LED. 2015-09-03 12:21:25 +02:00
Pawel Rozanski e8d8f93350 25Mhz xtal for ELMO. 2015-09-03 12:20:48 +02:00
Wojciech Gorniak b9fd743216 ELMO target (NUCLEO_F411RE copy). 
Conflicts:
	workspace_tools/build_release.py
	workspace_tools/export_test.py
	workspace_tools/toolchains/gcc.py
 2015-09-03 11:58:01 +02:00
0xc0170 8a32badea1 mbed lib revision - 106 2015-09-02 16:47:10 +01:00
hjjeon0608 cbe00fd832 Remove '#include W7500x_conf.h' 
Add assert parameter define.
 2015-09-02 17:59:15 +09:00
hjjeon0608 3208676d7a We handle including header by W7500x_conf.h. 
But now I deleted the W7500x_conf.h and all peri drivers have own including header.
And some code are optimized and removed warning.
 2015-09-02 17:55:26 +09:00
hjjeon0608 01ce5e6580 Move defines of UART from PeripheralNames.h to device.h because to move PeripheralNames.h(not dependent mcu) to upper folder. 2015-09-02 17:34:19 +09:00
hjjeon0608 b329a1e6b5 I found wrong pin name during re-struct the folders. 
So I correct this.
 2015-09-02 17:32:01 +09:00
hjjeon0608 428eae0cdc objects.h, PeripheralNames.h and PortNames.h are moved from TARGET_WIZwiki_W7500 folder to upper folder. 2015-09-02 17:15:13 +09:00
hjjeon0608 17d6ff861a objects.h, PeripheralNames.h and PortNames.h are moved from TARGET_WIZwiki_W7500 folder to upper folder because they are not dependent to mcu. 2015-09-02 17:14:12 +09:00
hjjeon0608 d6d279edb5 Peripheral drivers are moved from cmsis to hal folder. 
And cmsis.h, cmsis_nvic.c, cmsis_nvic.h, system_W7500x.c, system_W7500x.h and W7500x.h are moved to upper folder.
 2015-09-02 17:11:59 +09:00
Martin Kojtal 47c81703b3 Merge pull request #1301 from Bernator/master 
[LPC11U68] fix Uart1-4 irq handling bugs, add Pins P0_14,P0_13 for use with Uart1
 2015-09-02 07:46:28 +01:00
Martin Kojtal 483bb0197f Merge pull request #1299 from claplace/lpc81x 
LPC81X: reduce code size and add ARM_GCC support
 2015-09-01 15:45:33 +01:00
akhilpanayam 1ac74c33f2 * updated with correction in serial_api,c for finding mux setting. 2015-09-01 19:15:46 +05:30
akhilpanayam 5079132062 * updated with corrections in Analogue in and out APIs. 2015-09-01 19:15:45 +05:30
Karthik Purushothaman 127471ba30 Moved files from TARGET_SAM0 to TARGET_SAM_CortexM0+ 2015-09-01 19:15:44 +05:30
akhilpanayam ddfb57e932 * updated with corrections in default pins. 2015-09-01 19:15:43 +05:30
akhilpanayam 4d5f7a3fa7 * updated port apis. 
* added supprot for SAMD21J18A for mbed SDK tests.
 2015-09-01 19:15:43 +05:30
akhilpanayam 9a503026cf * updated with corrections in analogueout apis. 2015-09-01 19:15:42 +05:30
akhilpanayam 37ddc4c0c3 * updated port apis for SAMD21J18A 
* correction in analogueout api
* test support for analogueout in mbed SDK
 2015-09-01 19:15:42 +05:30
akhilpanayam 24edb54690 * updated pins for external interrupt. 
* updated default pins.
 2015-09-01 19:15:41 +05:30
akhilpanayam 013b71a56f * updated systeminit checking for analoguein apis. 
* updated with tested code for analogueout apis.
* updated objects for analaguein and analaogueout.
 2015-09-01 19:15:40 +05:30
akhilpanayam ecfc96f57c * Base Commit for AnalogueOut. 2015-09-01 19:15:39 +05:30
vimalrajr 67799287aa Adding pins for SAMD21 SERCOM and PWM, and default pinouts of SPI and I2C. 2015-09-01 19:15:39 +05:30
akhilpanayam 6798b87180 Resolved merge conflict 2015-09-01 19:15:38 +05:30
Anders Lindvall 05d41fe7db Fixed linker script for LPCXpresso for EA LPC11U35 QuickStart Board 
After version 7.5.0 the compiler used in LPCXpresso changed and as a
result some of the included libraries were changed. This caused a
build error when trying to compile exported mbed projects.

The error was with NewlibNano libraries (*_s.a) and as NewlibNano is
not used by mbed, this patch references the non-NewlibNano libraries
instead.

This change in the linker script has been verified on LPCXpresso versions
from 6.1.2 up to the current 7.9.0.
 2015-08-31 13:21:42 +02:00
fedlak 2c2ac0f2a2 [FRDM KL43Z] Fix RTC init function for KL43Z 2015-08-29 01:27:40 +02:00
fedlak 12b0e1dc49 [FRDM KL43Z] Fix RTC init function for KL43Z 2015-08-28 01:17:49 +02:00
tomoyuki yamanaka 5588d3cef3 Modify the register setting method in the pin setting configuration. 
Modify the register setting method in the pin setting configuration.
 2015-08-26 12:58:32 +09:00
Martin Kojtal 92ca8c7b60 Merge pull request #1302 from jpbrucker/fix_s110_ldscript 
Nordic: update application start address in GCC linker script
 2015-08-20 10:41:02 +01:00
Martin Kojtal 6f6625090c Merge pull request #1305 from bcostm/dev_NUCLEO_F446RE 
NUCLEO_F446RE - Improvements + update of all STM32F4 (PWM12 + map/system files)
 2015-08-20 10:40:11 +01:00
Martin Kojtal 63c2b2477a Merge pull request #1297 from kpurusho/master 
Remaining drivers for SAMR21
 2015-08-20 10:31:19 +01:00
bcostm 844a2bed64 Add PWM_12 2015-08-19 11:01:13 +02:00
bcostm e2b37fc68d Add missing PWM_12 and update map and system files to be in line with latest official version. 2015-08-19 10:48:17 +02:00
Jean-Philippe Brucker dfcb2c680f Nordic: update application start address in GCC linker script 
The S110 linker script is still using start address 0x16000, which was
required by version 7.1 of the s110 SoftDevice. Update it to the current
address, required by S110 v8.0.0.
 2015-08-18 17:39:55 +01:00
0xc0170 0d637743c7 mbed lib revision - 105 2015-08-18 14:45:36 +01:00
Martin Kojtal 1c2263fbc7 Merge pull request #1288 from BlackstoneEngineering/BLoDFix 
ST BLoD Fix
 2015-08-18 08:01:01 +01:00
Bernator 8f50e1e9ea [LPC11U68] fix Uart1-4 irq handling bugs and add Pins P0_14,P0_13 for use with Uart1 2015-08-17 19:12:28 +02:00
bcostm ded07a59b5 Update SPI clock for STM32F446RE 2015-08-17 16:41:06 +02:00
bcostm 239decadcc Add missing PWM_12 definition 2015-08-17 11:51:39 +02:00
bcostm 0746c2f755 [STM32L4] serial improvements 2015-08-17 11:49:04 +02:00
bcostm 3ce7c5c790 [STM32F4] pwmout improvements 2015-08-17 11:48:21 +02:00
bcostm 7b1a2e1077 Add missing startup files for ARM_STD, MICRO_ARM and IAR 2015-08-17 11:43:16 +02:00
bcostm 915ed19fe6 Update other cmsis files 
- Interrupt vectors
- Timer clock setting for hal tick
 2015-08-17 11:41:36 +02:00
bcostm eb88f87118 Update CMSIS device driver V2.3.2 2015-08-17 11:31:25 +02:00
bcostm f88cad9d9f Update STM32CubeF4 HAL driver to V2.3.2 2015-08-17 11:29:07 +02:00
Cyprien Laplace 65fa7b6923 LPC81X: reduce code size and add ARM_GCC support 
LPC810 has only 4KB of flash, thus avoiding dead code is really nice.
Here the NVIC interrupt setup was pulled from the us_ticker code even
if no code is using timer events.

This also adds ARM_GCC support for TARGET_LPC81X.

LPC81X and LPC82X support Cortex M0+ VTOR register, so it is not
necessary to put non-init text at 0x200.
 2015-08-16 21:35:08 -04:00
Martin Kojtal 6d84db41c6 Merge pull request #1289 from bcostm/dev_DISCO_F746NG 
DISCO_F746NG - Improvements
 2015-08-14 13:13:40 +01:00
akhilpanayam c30a8a1df0 * renamed TARGET_SAM0 folder name to TARGET_SAM_CortexM0+ 2015-08-14 17:36:33 +05:30
akhilpanayam 1f9799eb71 * updated analoguin init for checking systeminit in beginning. 2015-08-14 17:36:32 +05:30
vimalrajr 78817e8c44 Removed unwanted comments. 2015-08-14 17:36:31 +05:30
vimalrajr 698484eb47 Bug fix in PWM APIs, not all TCC modules support upto 4 channels. 2015-08-14 17:36:31 +05:30
vimalrajr 59d3dffa0a Modified I2C APIs as per review comments. 2015-08-14 17:36:30 +05:30
vimalrajr c63497a363 Added support for General Call Address mode. 2015-08-14 17:36:29 +05:30
vimalrajr bbf884c56e Added missing pins in PWMOut pinmap. 2015-08-14 17:36:28 +05:30
akhilpanayam 6b346253f2 * updated with corrections in serial asynch apis. 2015-08-14 17:36:27 +05:30
vimalrajr 149244d474 Bug fix in PWM APIs 2015-08-14 17:36:27 +05:30
akhilpanayam fa56bfd164 * Base commit after integrating ASF_3.25. 2015-08-14 17:36:26 +05:30
akhilpanayam e7da2dbe2b * updated serial api to support 1 pin (rx / tx) operation. 2015-08-14 17:36:25 +05:30
akhilpanayam 61b7d9755a * removed board.h in common folder - not required. 
* common2 folder moved to TARGET_Atmel\TARGET_SAM0\drivers. common2 folder contains m0+ specific files only.
 2015-08-14 17:36:24 +05:30
vimalrajr 5109745950 Modifying I2C Async API to handle null tx and rx buffers 2015-08-14 17:36:24 +05:30
akhilpanayam 8227c91f54 * added pins for ADC as per pio_samr21g18a.h 2015-08-14 17:36:23 +05:30
vimalrajr 31fb6731ca Added handling RX only transmission in SPI APIs 2015-08-14 17:36:22 +05:30
vimalrajr 0adc8fdf6c Bug fix in SPI API 2015-08-14 17:36:21 +05:30
akhilpanayam 1da4cbc288 * added cmsis files for pin definitions for all targets of SAMR21 and D21. 2015-08-14 17:36:21 +05:30
vimalrajr 9ccfa07ac6 Removed unwanted header file inclusions 2015-08-14 17:36:20 +05:30
vimalrajr 800bc093e9 Modified pinmap APIs and supporting functions as per review comments. 2015-08-14 17:36:20 +05:30
akhilpanayam 47d62cd8ce * Updated IAR startup file. 
* Grouped SAMR21G18A specific files to its particular folder.
* Added files for all variants of SAMR21 and SAMD21.
* Removed Quick Start files from ASF.
* Added Target Dependency in port.c for PORT MASK.
* Grouped PWM pin implementation to SAMR21G18A folder.
 2015-08-14 17:36:19 +05:30
akhilpanayam d34e39ff05 * updated with corrections in serial init. 2015-08-14 17:36:18 +05:30
akhilpanayam 9da56e4dfc * updated serial_free api to make the pin Pulled up. 2015-08-14 17:36:18 +05:30
vimalrajr 3e5ac805b2 Modified SPI default baud rate as per review comments 2015-08-14 17:36:17 +05:30
vimalrajr bf05bbcaa6 Modified PWMOut APIs as per review comments 2015-08-14 17:36:17 +05:30
vimalrajr cd6771367d Modified supporting functions for finding SERCOM pinmaps. 2015-08-14 17:36:16 +05:30
akhilpanayam 8188c05c64 * Removed unwanted arrays in Pinmap. 
* corrected macros for build to be successful without ASYNCH enabled in serial apis.
* added serial_pinout_tx api in serial.
 2015-08-14 17:36:16 +05:30
vimalrajr 987567ee59 Adding PWM API implementation 2015-08-14 17:36:15 +05:30
akhilpanayam 62a6bcaeeb * updated with corrections in AnalogueIn apis. 2015-08-14 17:36:14 +05:30
akhilpanayam c7573e43ce * updated port apis with corrections. 2015-08-14 17:36:14 +05:30
vimalrajr 0ee229aa90 Modified I2C APIs as per review comments. 2015-08-14 17:36:13 +05:30
vimalrajr 5f9ee05e4b Removed ASF license headers from files. 2015-08-14 17:36:13 +05:30
vimalrajr 062ee461da Adding implementation for I2C APIs - master mode, slave mode, and master async interrupt mode. 2015-08-14 17:36:12 +05:30
akhilpanayam 87c8bc8bda * updated with new folder structure. 
* added more pins for external interrupt as per pio_samr21g18a.h
* updated serial_api.c for sanity checks, removed unused variables and other corrections.
 2015-08-14 17:36:10 +05:30
akhilpanayam a4fc70d463 * updated with NULL check for irq_handler. 2015-08-14 17:36:09 +05:30
akhilpanayam e1c0fea8b7 * updated the default pin macros for R21. 2015-08-14 17:36:09 +05:30
akhilpanayam ef2b6cfd66 * File addition for PWM. 
* updated port apis for variable (start) data type change.
 2015-08-14 17:36:08 +05:30
akhilpanayam c47f60bb23 * updated with port driver apis. Tested and working. 2015-08-14 17:36:08 +05:30
akhilpanayam 5d0a913591 * Added missed out pins for external Interrupt. irqmask initialized to 0 in init for gpio irq. 2015-08-14 17:36:07 +05:30
Martin Kojtal b28ce2b780 Merge pull request #1277 from modtronix-com/master 
Changed NZ32-SC151 external oscillator to 16MHz, and moved defines to device.h
 2015-08-14 12:43:02 +01:00
David H 57463eaef0 Merge pull request #5 from mbedmicro/master 
Update my fork with original
 2015-08-14 13:25:26 +10:00
modtronix-com 160d4bccf7 Cosmetic changes 
Cosmetic change to reduce number of diffs showing up in pull request
 2015-08-14 12:06:13 +10:00
modtronix-com 16327ce210 Added place for adding mbed and HAL defines 
Added place for adding mbed and HAL defines
 2015-08-14 11:53:45 +10:00
modtronix-com ccecacc129 Moved "stm32l1xx_hal_conf.h" to project folder. 
Moved "stm32l1xx_hal_conf.h" to target folder. This file is part of
STM32CubeL1, and this is the way it is done for the 95 examples supplied
with STM32CubeL1. This file should be part of project(target) folder,
not API. On mbed, this has been done for TARGET_STM32F4 and
TARGET_STM32F7 targets (in ../targets/cmsis/TARGET_STM folder). All
targets in these two folders already have the "stm32l1xx_hal_conf.h"
file in the target folder.
 2015-08-14 10:53:11 +10:00
Steven Cooreman 62d9adfb42 In certain cases, the clock setting did not select HFXO, even though HFXO was requested in the board header. 
Root cause: you cannot use a C-enum name in a #if compare, becaudse the preprocessor will replace all enum names with 0 (so all checks on HFXO/LFXO checked out regardless of the define).
 2015-08-13 17:35:40 +02:00
Martin Kojtal 376d6a73e3 Merge pull request #1287 from stevew817/usb-device-rel3 
Silicon Labs - Add support for USBDevice
 2015-08-13 15:39:43 +01:00
Martin Kojtal bd9a168505 Merge pull request #1273 from marcusbirkin/master 
KL46Z - Ensure the NVIC table gets copied to RAM even when it is not at 0x0000
 2015-08-13 11:43:33 +01:00
Martin Kojtal 163a66abdd Merge pull request #1268 from martin2100/patch-1 
STMF4 - pwmout_api.c freq fix
 2015-08-13 11:21:23 +01:00
Martin Kojtal bc07f838f8 Merge pull request #1286 from devanlai/master 
LPC15XX - Fix GPIO port word pin registers offset
 2015-08-13 11:19:31 +01:00
Martin Kojtal 59ff23cdaf Merge pull request #1290 from BlackstoneEngineering/BLoDFix_SiLabs 
Blue Lights of Death fix for Silicon Labs boards
 2015-08-13 10:56:41 +01:00
Martin Kojtal 88ef2fe48f Merge pull request #1283 from kgills/pwm_fix 
[MAXWSNENV, MAX32600MBED] Simplifying pwm search. Reordering PinMap_PWM.
 2015-08-13 10:27:02 +01:00
Martin Kojtal cc42528dbc Merge pull request #1281 from jpbrucker/fix_us_ticker 
Nordic: handle unwanted RTC interrupts
 2015-08-13 10:21:57 +01:00
Martin Kojtal 99877b836d Merge pull request #1276 from jpbrucker/nrf51_clock_fallback 
Nordic: fallback to the internal LF clock in case Xtal doesn't start
 2015-08-13 10:17:26 +01:00
Austin Blackstone 0278260cad added BLoD functionality to all Silicon Labs boards. Added #define to all device.h files and a disable_irq() exception in common/board.c because the wait function is implemented in a interrupt for both NRF and SiLabs boards 2015-08-11 11:32:11 -05:00
bcostm 2b1b1acce6 Improvement of timer initialization for pwmout 2015-08-11 14:42:15 +02:00
bcostm 8f6a11530c Change SERIAL_TX/RX value 2015-08-11 14:38:03 +02:00
bcostm 8b76967c29 Improvement of ticker configuration 2015-08-11 14:34:06 +02:00
bcostm 408927ec5a [DISCO_F746NG] Update cmsis files (alignment with STM32CubeF7 package) 2015-08-11 12:16:52 +02:00
bcostm 03bd5dbd8f [DISCO_F746NG] Update STM32CubeF7 to V1.0.1 2015-08-11 12:04:45 +02:00
Austin Blackstone 1f93de49b6 added Blue Lights of Death action to ST Nucleo and Diso boards 2015-08-10 16:54:50 -05:00
Devan Lai 37c71434dd [LPC15XX] Fix GPIO port word pin registers offset 
Adjust offset for GPIO port word pin registers from 0x100 to 0x1000
 2015-08-07 22:32:57 -07:00
bcostm a1bd132fc1 Merge branch 'master' of https://github.com/mbedmicro/mbed 2015-08-07 11:54:06 +02:00
Kevin Gillespie e3482229e0 Simplifying pwm search. Reordering PinMap_PWM. 2015-08-05 12:57:07 -05:00
0xc0170 020975119c mbed lib revision - 104 2015-08-05 14:19:47 +01:00
Jean-Philippe Brucker 15019ef882 Nordic: fallback to the internal LF clock in case Xtal doesn't start 
Since some Nordic platforms don't use an external clock source, they
need to be built with the TARGET_NRF_LFCLK_RC flag. If they don't,
SystemInit will wait indefinitely for an external clock to start.

This patch adds a 1s timeout to the external oscillator initialisation,
and falls back to using the internal RC one if no LFCLKSTARTED event was
received in this interval.

For most applications, this won't matter. When building for the wrong
Nordic target, pin numbers will be mixed up as well and the application
will break later on.
But on targets that can only be updated using FOTA and don't have an
interface chip, this patch avoid ending up with a bricked device after a
slight mistake. Indeed, BLE DFU service is portable across all boards
and will run even with a mixed-up target setup, allowing the user to
re-install the right application.

An example scenario is transferring an application on a standalone
NRF51 chip, after spending some time prototyping on an mKIT, which tends
to happen a bit too often...

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
 2015-08-05 10:57:57 +01:00
Jean-Philippe Brucker 1c90449f35 Nordic: handle unwanted RTC interrupts 
This patch clears the EVENT_COMPARE register even when we're not
expecting to get a COMPARE interrupt.

Here is a scenario where we get an unwelcome interrupt, and where it
currently results in a deadlock:

* A Ticker T1 runs at 500ms
* Its handler registers a Timeout T2 at 20µs. Since LF clock runs at
  32.768kHz, this will be rounded up to a multiple of 30.5µs (actually
  61µs, to ensure we're in the next tick window)

           T1  T2                                T1' T2'
    -------|---|---------------------------------|---|--------->
           :   :                                 :
           <---> n * 30.5µs                      :
           <--------------- 500ms --------------->

* When the ticker API handles T1, it calls us_ticker_set_interrupt a
  first time for T1', and then for registering T2.
* Since T2 period is less than one RTC tick (30.5µs), there is a high
  chance it will go past *while* we're still in this first handler.
* So ticker_irq_handler also handles T2 as well, and removes it from the
  queue.
* us_ticker_set_interrupt is called for T1' before returning from
  ticker_irq_handler

The problem resides in the fact that us_ticker_set_interrupt takes more
than 2 RTC ticks to execute: while inside the handler, T2 interrupt will
fire.

* Because of this pending interrupt, RTC1_IRQHandler will be called
  right away, but since we removed T2 from the queue, the handler is
  waiting for T1' instead, and will not clear EVENT_COMPARE until we
  reach the T1' tick, in about 500ms.
* This results in a lock and main isn't executed anymore.

With this patch, we avoid being stuck in RTC1_IRQHandler while waiting
for T1'.

Note: even when T2 isn't handled in the same loop as T1, we may get a
spurious interrupt, because us_ticker_set_interrupt will be called twice
for T2... and will register T2+m the second time, while T2 interrupt is
fired in the background.
That case isn't as harmful, since RTC1_IRQHandler will be waiting for
T2+m, which is only one or two ticks further, and then it won't be
called again before T1'.

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
 2015-08-05 10:39:29 +01:00