suspect-devices/circuitpython/shared-bindings, branch 3.1.1 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=3.1.1 2018-09-12T21:19:43+00:00 UART fixes and enhancements; default board object fix 2018-09-12T21:19:43+00:00 Dan Halbert halbert@halwitz.org 2018-09-12T21:19:43+00:00 urn:sha1:6a046f55c449da59cf4641ef4cf34c6b1b63da44 UART: Always allocate UART objects in the long-lived pool 2018-08-09T00:21:57+00:00 Jeff Epler jepler@gmail.com 2018-07-31T01:49:20+00:00 urn:sha1:e1b4e9b7c7cdd7a022a5ab113b68c8fa6be2c74d Particularly when they have buffers that are written via IRQ or DMA, UART objects do not relocate gracefully. If such an object is relocated to the long-lived pool after its original creation, the IRQ or DMA will write to an unexpected location within the Python heap, leading to a variety of symptoms. The most frequent symptom is inability to read from the UART. Consider the particular case of atmel-samd: usart_uart_obj_t contains a usart_async_descriptor contains a _usart_async_device. In _sercom_init_irq_param the address of this contained _usart_async_device is assigned to a global array sercom_to_sercom_dev which is later used from the interrupt context _sercom_usart_interrupt_handler to store the received data in the right ring buffer. When the UART object is relocated to the long-lived heap, there's no mechanism to re-point these internal pointers, so instead take the cowardly way and allocate the UART object as long-lived. Happily, almost all UART objects are likely to be long-lived, so this is unlikely to have a negative effect on memory usage or heap fragmentation. Closes: #1056 fix os.listdir() when current dir is '/' 2018-06-15T14:51:03+00:00 Dan Halbert halbert@halwitz.org 2018-06-15T14:51:03+00:00 urn:sha1:327b0f76dac55a4bfe5df52799f72734623a351a Prevent freezing USB during high frequency PulseIn. 2018-06-08T19:56:32+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2018-06-05T19:38:31+00:00 urn:sha1:2fbab8067afcb008bc92d9c155dfef360fbc10f9 We now track the last time the background task ran and bail on the PulseIn if it starves the background work. In practice, this happens after the numbers from pulsein are no longer accurate. This also adjusts interrupt priorities so most are the lowest level except for the tick and USB interrupts. Fixes #516 and #876 Fixed documentation formatting for RTD 2018-06-06T22:28:01+00:00 Kattni Rembor kattni@adafruit.com 2018-06-06T22:28:01+00:00 urn:sha1:3a3817262788a6b6812564815c46fdf1bd59667b Adapt for feedback and hack around pIRkey size constraint. 2018-06-01T22:08:52+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2018-06-01T20:11:40+00:00 urn:sha1:717199018bcb43dd50af9011e2259f3caf3290f8 atmel-samd: Add rotary encoder support. 2018-06-01T22:08:48+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2018-05-30T01:21:19+00:00 urn:sha1:d0fb6e7a2fd6b60ecc0fc8a332a9de5ed32f88af Fixes #283 atmel-samd: Re-org helper peripheral files into their own subdirectory. 2018-06-01T22:07:31+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2018-05-26T01:39:16+00:00 urn:sha1:fd71e56891749837a823a4b555b84150b6fbc1e8 Ideally in the future they won't depend on ASF4 or MicroPython. Add gamepad_singleton to root pointers 2018-05-30T21:11:22+00:00 Radomir Dopieralski openstack@sheep.art.pl 2018-05-24T09:25:21+00:00 urn:sha1:b219ce6d377b6e00e1967c9b98966d4229f566ed Make the gamepad singleton long-lived 2018-05-30T21:11:22+00:00 Radomir Dopieralski openstack@sheep.art.pl 2018-05-24T09:16:30+00:00 urn:sha1:c37b69e1a5316956ce966cce6841f3d960e581b0 So that it is not later moved.