suspect-devices/circuitpython/supervisor/shared/safe_mode.c, branch audiocore-rawsample-sinewave CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=audiocore-rawsample-sinewave 2020-01-18T01:36:08+00:00 Refine iMX RT memory layout and add three boards 2020-01-18T01:36:08+00:00 Scott Shawcroft scott@tannewt.org 2020-01-09T04:32:45+00:00 urn:sha1:7d8dac9211dab92d750a0351335b4ad3fffc05e2 Introduces a way to place CircuitPython code and data into tightly coupled memory (TCM) which is accessible by the CPU in a single cycle. It also frees up room in the corresponding cache for intermittent data. Loading from external flash is slow! The data cache is also now enabled. Adds support for the iMX RT 1021 chip. Adds three new boards: * iMX RT 1020 EVK * iMX RT 1060 EVK * Teensy 4.0 Related to #2492, #2472 and #2477. Fixes #2475. make translate and remove backslash-r's 2019-12-12T19:51:50+00:00 Dan Halbert halbert@halwitz.org 2019-12-12T19:51:50+00:00 urn:sha1:1b3028bed139149247ff5e692f24ec5356450f83 Fix flash write error handling; clean up safe mode message printing 2019-12-12T19:41:49+00:00 Dan Halbert halbert@halwitz.org 2019-12-12T19:35:24+00:00 urn:sha1:7889b999ccb32b78ddabc2b2738f0a9d182b9411 Supervisor: move most of systick to the supervisor 2019-11-18T17:01:23+00:00 Jeff Epler jepler@gmail.com 2019-11-18T14:22:41+00:00 urn:sha1:7f744a2369a5036cadfa05575da1704f709c98bb This code is shared by most parts, except where not all the #ifdefs inside the tick function were present in all ports. This mostly would have broken gamepad tick support on non-samd ports. The "ms32" and "ms64" variants of the tick functions are introduced because there is no 64-bit atomic read. Disabling interrupts avoids a low probability bug where milliseconds could be off by ~49.5 days once every ~49.5 days (2^32 ms). Avoiding disabling interrupts when only the low 32 bits are needed is a minor optimization. Testing performed: on metro m4 express, USB still works and time.monotonic_ns() still counts up Rework safe mode so we can trigger on all resets 2019-05-09T17:15:28+00:00 Scott Shawcroft scott@tannewt.org 2019-05-09T17:15:28+00:00 urn:sha1:b87565138ea2027625e69aee4cf1170606e1f40a Update `on_next_reset` for new safe mode. 2019-05-08T22:23:40+00:00 Scott Shawcroft scott@tannewt.org 2019-05-08T22:23:40+00:00 urn:sha1:837d3f57eefe8189969dda6512f278b4fb76af55 Fixes #1831 Reorganize board busses into shared-bindings and shared-module. 2019-04-08T23:58:50+00:00 Scott Shawcroft scott@tannewt.org 2019-04-08T23:58:50+00:00 urn:sha1:0f003ac5b8312fafb120e86e05eefd2431014d8c Fix crash when getting board.SPI outside the VM 2019-04-06T02:06:37+00:00 Scott Shawcroft scott@tannewt.org 2019-04-06T02:06:37+00:00 urn:sha1:7686f93ef456aa46f538da3159d0e12cae9fa737 If one of the default pins was already in use it would crash. The internal API has been refined to allow us to get the value without causing an init of the singleton. Fixes #1753 Enter safe mode when an allocation is attempted on an uninitialized heap. 2019-03-12T18:18:26+00:00 Scott Shawcroft scott@tannewt.org 2019-03-08T23:29:14+00:00 urn:sha1:03be42ab847f04a89d207d98fdb28048cfedf72d Rework safe mode and have heap overwrite trigger it. 2018-12-06T22:24:20+00:00 Scott Shawcroft scott@tannewt.org 2018-12-06T22:24:20+00:00 urn:sha1:6ef863997186e1893cdf19c0e04d0a8a3f33ad9d This creates a common safe mode mechanic that ports can share. As a result, the nRF52 now has safe mode support as well. The common safe mode adds a 700ms delay at startup where a reset during that window will cause a reset into safe mode. This window is designated by a yellow status pixel and flashing the single led three times. A couple NeoPixel fixes are included for the nRF52 as well. Fixes #1034. Fixes #990. Fixes #615.