suspect-devices/circuitpython - CircuitPython - a Python implementation for teaching coding with microcontrollers

Age	Commit message (Collapse)	Author
2015-12-22	stmhal: Add pyb.irq_stats() to get statistics about IRQ calls.	Damien George
	Adds a lot of code, makes IRQs a bit less efficient, but is very useful for debugging. Usage: pyb.irq_stats() returns a memory view that can be read and written, eg: list(pyb.irq_stats()) pyb.irq_stats()[0] pyb.irq_stats()[0] = 0 The patch provides general IRQ_ENTER() and IRQ_EXIT() macros that can be modified to provide further IRQ statistics if desired.
2015-12-04	stmhal: Only use BASEPRI irq stuff if Cortex is M3 or higher.	Damien George

2015-12-04	stmhal: Add raise_irq_pri and restore_irq_pri functions.	Damien George
	These can be used to disable only certain interrupts, ones at or above the given priority value.
2015-11-25	stmhal: Increase the priority of UART IRQ.	Dave Hylands
	The UARTs have no FIFOs, so if interrupts are disabled for more than a character time (10 usec at 1 Mbit/sec) then characters get dropped. The overhead for handling a UART ISR is about 0.5 usec, so even at baud rates of 1 Mbit/sec this only corresponds to about 5% of the CPU. Lower baud rates will have less of an impact.
2015-11-24	stmhal/irq: Set all IRQ subpriorities to 0, since they aren't used.	Damien George

2015-11-24	stmhal/irq: Add comment about SDIO priority being higher than DMA.	Damien George

2015-11-24	stmhal: Put IRQs into priority order.	Dave Hylands
	- added some comments to explain the priority/sub-priority. - adds an entry for SDIO (to be used in a later patch) - increases DMA priority above USB so that DMA can be used for sdcard I/O when using USB Mass Storage.
2015-11-01	stmhal: Add symbolic #defines for interrupt levels in irq.h.	Dave Curtis

2014-11-30	stmhal: Make pyb.[u]delay use systick with IRQs, busy loop otherwise.	Damien George
	pyb.delay and pyb.udelay now use systick if IRQs are enabled, otherwise they use a busy loop. Thus they work correctly when IRQs are disabled. The busy loop is computed from the current CPU frequency, so works no matter the CPU frequency.
2014-08-25	stmhal: Make enable_irq and disable_irq inline functions.	Damien George
	These functions are generally 1 machine instruction, and are used in critical code, so makes sense to have them inline. Also leave these functions uninverted (ie 0 means enable, 1 means disable) and provide macro constants if you really need to distinguish the states. This makes for smaller code as well (combined with inlining). Applied to teensy port as well.
2014-08-25	Add save/restore_irq	Dave Hylands
	Factored irq functions into a separate file.