CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=esp-extra-scripts 2016-05-05T14:14:42+00:00 2016-05-05T14:14:42+00:00 Tobias Badertscher python@baerospace.ch 2016-03-23T21:39:31+00:00 urn:sha1:adaaf439b06a5ccf47ef8eeea41790e2da13d33a 2016-01-29T22:31:56+00:00 Damien George damien.p.george@gmail.com 2016-01-29T22:31:56+00:00 urn:sha1:ea89b80ff4f842b010f9f8ec3280675f81bc6bc5 TIM3 is no longer used by USB CDC for triggering outgoing data, so we can now make it available to the user. PWM fading on LED(4) is now gone, but will be reinstated in a new way. 2016-01-29T15:21:43+00:00 Damien George damien.p.george@gmail.com 2016-01-09T21:59:15+00:00 urn:sha1:d3631339176b768ce1ffdc535223385245ff906b Previous to this patch the USB CDC driver used TIM3 to trigger the sending of outgoing data over USB serial. This patch changes the behaviour so that the USB SOF interrupt is used to trigger the processing of the sending. This reduces latency and increases bandwidth of outgoing data. Thanks to Martin Fischer, aka @hoihu, for the idea and initial prototype. See PR #1713. 2015-12-22T21:00:20+00:00 Damien George damien.p.george@gmail.com 2015-06-10T13:25:54+00:00 urn:sha1:401af50dc081faa421e7caef18fde2beb15632e4 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. 2015-12-09T09:56:36+00:00 neilh10 neilh20@wLLw.net 2015-12-08T22:02:34+00:00 urn:sha1:1be0fde45c8d84eaf04851af96f06aad8171b2b2 This is refactoring to enable support for the two USB PHYs available on some STM32F4 processors to be used at the same time. The F405/7 & F429 have two USB PHYs, others such as the F411 only have one PHY. This has been tested separately on a pyb10 (USB_FS PHY) and F429DISC (USB_HS PHY) to be able to invoke a REPL/USB. I have modified a PYBV10 to support two PHYs. The long term objective is to support a 2nd USB PHY to be brought up as a USB HOST, and possibly a single USB PHY to be OTG. 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. 2015-11-26T16:17:26+00:00 Dave Hylands dhylands@gmail.com 2015-11-26T01:09:44+00:00 urn:sha1:061eb6fa6b196ed3d17121acb8282d626fdd6a69 The STMCube examples define both USE_USB_HS and USE_USB_HS_IN_FS when they use the HS in FS mode. The STM32F401 doesn't have a USB_HS at all, so the USB_OTG_HS instance doesn't even exist. 2015-11-25T23:53:26+00:00 Tobias Badertscher python@baerospace.ch 2015-11-24T13:35:24+00:00 urn:sha1:8844d031e4bc39cb6e6cd053b63a8cdaeb383221 2015-11-24T16:23:54+00:00 Damien George damien.p.george@gmail.com 2015-11-24T16:23:54+00:00 urn:sha1:36bd10779c3721d1b4b66c549023fd4a33f4db58 uwTick can only change in the SysTick IRQ so this IRQ function does not need to take special care with this variable. It's important to make this IRQ function as efficient as possible. 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).