Squashed commit of the following:
arch/arm/src/kinetis: A fixes from first (unsuccessful) attempt to build the Freedom-K28F configuration.
configs/freedom-k28f: Add basic board support for Freedom-K28F. Initial commit is basically just the Teensy-3.x brought up to date and with name changes.
Squashed commit of the following:
arch/arm/src/kinetis: Add K28F memory map.
arch/arm/src/include/kinetis and src/kinetis: Add basic chip features and interrupt-related definitions for the K28F
kinetis usb device fixes
* kinetis:usb device use correct CONFIG OTG control
* kinetis:usb device fix interrupt storm when cable is disconnected
The DM, DP state were incorrect because the pulldowns were not
enabled.
Also the pending asynchronous resume interrupt needed to be
re-armed after the suspend is in effect. This is now done in
the isr.
Approved-by: Gregory Nutt <gnutt@nuttx.org>
Stm32 rtc small patches
* RTC: canceling an alarm marks it as inactive
* STM32L4, STM32F4, STM32F7 RTC: fix reading alarm value that is more than 24h in future
* STM32F0 RTC: fix backup register count in stm32_rtcc.h
All other STM32: SHIFTR_SUBFS_MASK was correct in STM32F0 only
* STM32L1: use correct EXTI line definitions
Approved-by: Gregory Nutt <gnutt@nuttx.org>
Squashed commit of the following:
Change all calls to usleep() in the OS proper to calls to nxsig_usleep()
sched/signal: Add a new OS internal function nxsig_usleep() that is functionally equivalent to usleep() but does not cause a cancellaption point and does not modify the errno variable.
sched/signal: Add a new OS internal function nxsig_sleep() that is functionally equivalent to sleep() but does not cause a cancellaption point.
This commit backs out most of commit b4747286b19d3b15193b2a5e8a0fe48fa0a8638c. That change was added because sem_wait() would sometimes cause cancellation points inappropriated. But with these recent changes, nxsem_wait() is used instead and it is not a cancellation point.
In the OS, all calls to sem_wait() changed to nxsem_wait(). nxsem_wait() does not return errors via errno so each place where nxsem_wait() is now called must not examine the errno variable.
In all OS functions (not libraries), change sem_wait() to nxsem_wait(). This will prevent the OS from creating bogus cancellation points and from modifying the per-task errno variable.
sched/semaphore: Add the function nxsem_wait(). This is a new internal OS interface. It is functionally equivalent to sem_wait() except that (1) it is not a cancellation point, and (2) it does not set the per-thread errno value on return.
sched/semaphore: Add nxsem_post() which is identical to sem_post() except that it never modifies the errno variable. Changed all references to sem_post in the OS to nxsem_post().
sched/semaphore: Add nxsem_destroy() which is identical to sem_destroy() except that it never modifies the errno variable. Changed all references to sem_destroy() in the OS to nxsem_destroy().
libc/semaphore and sched/semaphore: Add nxsem_getprotocol() and nxsem_setprotocola which are identical to sem_getprotocol() and set_setprotocol() except that they never modifies the errno variable. Changed all references to sem_setprotocol in the OS to nxsem_setprotocol(). sem_getprotocol() was not used in the OS
libc/semaphore: Add nxsem_getvalue() which is identical to sem_getvalue() except that it never modifies the errno variable. Changed all references to sem_getvalue in the OS to nxsem_getvalue().
sched/semaphore: Rename all internal private functions from sem_xyz to nxsem_xyz. The sem_ prefix is (will be) reserved only for the application semaphore interfaces.
libc/semaphore: Add nxsem_init() which is identical to sem_init() except that it never modifies the errno variable. Changed all references to sem_init in the OS to nxsem_init().
sched/semaphore: Rename sem_tickwait() to nxsem_tickwait() so that it is clear this is an internal OS function.
sched/semaphoate: Rename sem_reset() to nxsem_reset() so that it is clear this is an internal OS function.
Removed the notion of attached. The khci_usbattach is call early in
the init either in board_initalize or in board_app_initalize. In
either case it is always done prior to the the class register.
Therefore the khci_usbattach call only set a flag, and that
flag is only tested in the class register. The class register will
enable the soft connect pull up.
This fixes a bug were a SoC does not have a clockdivN register
and passes a 0 for the init value. This prevents overflow of
the 0 decremented to -1 (0xffffffff) spilling over to other
clockdivN feilds.
Remove magic numbers from code, documented the use of
undocumented bits.
Remove comments and code that were not appropriate for this
hardware.
Removed ifdef that's that were always compiled and removed code
blocks that were never compiled.
Ensure proper access order to hardware.
Per the reference manual: disable endpoints prior to configuring buffer
descriptor, then enable endpoints
Reorganize interrupt processing order to offload data after processing
errors.
Reorganize initialization so that there is a clear initialization phase,
reset phase for both the hardware and software structures.
By breaking the initialization into smaller pieces, the reset interrupt
only resets the resources within the controller that should be reset.
Rework suspend and resume logic so they perform properly
Made attach and detach functions optional. As they do not make sense for
a bus powered device.
Ensured the calls to up_usbinitalize up_usbuninitalize do not violate the
USB spec.
The hardware reset state of the the MPU precludes any bus
masters other then DMA access to memory. Unfortunately
USB and SDHC have there own DMA and will not have access to
memory in the default reset state.
This change disabled the MPU if present on system startup.
The output structure of the GPIO for I2C needs to be open
drain. When left at the default, one can observe on a scope
the slave contending with the push-pull during the ACK
The output structure of the GPIO for I2C needs to be open
drain. When left at the default, one can observe on a scope
the slave contending with the push-pull during the ACK
The output structure of the GPIO for I2C needs to be open
drain. When left at the default, one can observe on a scope
the slave contending with the push-pull during the ACK
