suspect-devices/circuitpython/stmhal/timer.c, branch v1.5.2 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.5.2 2015-12-09T17:39:34+00:00 stmhal/timer: Use mp_float_t instead of float. 2015-12-09T17:39:34+00:00 Damien George damien.p.george@gmail.com 2015-12-09T17:39:34+00:00 urn:sha1:f54a96d6a20df998eb70a5cffe63f5ea885595c8 This way mp_float_t can be changed to, eg, double. stmhal: Add option to free up TIM3 from USB VCP polling. 2015-12-04T14:07:15+00:00 Damien George damien.p.george@gmail.com 2015-12-04T14:07:15+00:00 urn:sha1:66b96822fb33863fde5ce13a6bdeb99a404575dc This is a hack to free up TIM3 so that it can be used by the user. Instead we use the PVD irq to call the USB VCP polling function, and trigger it from SysTick (so SysTick itself does not do any processing). The feature is enabled for pyboard lite only, since it lacks timers. stmhal: Move flash storage idle tick handler from TIM3 to SysTick. 2015-11-24T16:18:07+00:00 Damien George damien.p.george@gmail.com 2015-11-24T16:18:07+00:00 urn:sha1:e99e6c883d70eda894aba124c8ee0495dc90c350 Using SysTick to do the counting and dispatch of the flash storage idle handler is more efficient than requiring a dedicated hardware timer. No new counter is needed, just the existing uwTick variable. The processing is not actually done in the SysTick IRQ, it is deferred to the flash IRQ (which runs at lower priority). stmhal: Add symbolic #defines for interrupt levels in irq.h. 2015-11-01T23:23:39+00:00 Dave Curtis davecurtis@sonic.net 2015-10-31T17:44:20+00:00 urn:sha1:32b3549cce7a965d92a81db02c7adc973f08d74c all: Add py/mphal.h and use it in all ports. 2015-10-31T16:14:30+00:00 Damien George damien.p.george@gmail.com 2015-10-30T23:03:58+00:00 urn:sha1:731f359292c0e2630873df1a19c5baac7287024f py/mphal.h contains declarations for generic mp_hal_XXX functions, such as stdio and delay/ticks, which ports should provide definitions for. A port will also provide mphalport.h with further HAL declarations. stmhal: Replace #include "stm32f4xx_hal.h" with #include STM32_HAL_H. 2015-07-29T23:38:25+00:00 Dave Hylands dhylands@gmail.com 2015-07-28T15:36:26+00:00 urn:sha1:ea8bf8105812b36fbf1596a78c6e14aa0a0c5a36 stmhal: Allow ADC.read_timed to take Timer object in place of freq. 2015-07-22T18:41:13+00:00 Damien George damien.p.george@gmail.com 2015-07-22T18:37:21+00:00 urn:sha1:7693ef3bd6e4456105c86909174a00f535a19261 This allows a user-specified Timer for the triggering of the ADC read, mirroring the new behaviour of DAC.write_timed. Addresses issue #1129. stmhal: Allow DAC.write_timed to take Timer object in place of freq. 2015-07-21T22:39:49+00:00 Damien George damien.p.george@gmail.com 2015-07-21T22:37:45+00:00 urn:sha1:abc24c187614e358faa10ed6a3e239151f70b9f8 This allows the DAC to use a user-specified Timer for the triggering (instead of the default Timer(6)), while still supporting original behaviour. Addresses issues #1129 and #1388. stmhal: Actually disable unhandled timer interrupts. 2015-04-28T07:17:05+00:00 Dave Hylands dhylands@gmail.com 2015-04-28T07:17:05+00:00 urn:sha1:fdcb3b7ebbb611497866123ec050fc99e5185cd8 stmhal: Reset the timer counter to zero after changing the auto reload. 2015-04-22T22:31:56+00:00 Dave Hylands dhylands@gmail.com 2015-04-22T22:01:25+00:00 urn:sha1:fd787c5e4ed369ddf8a178a62b6faf8a421e2bbc Because if the counter is above the new value of the auto-reload register then it may be a long time until the timer wraps around.