New design:
* capture output to a vstr
* compare the complete vstr to boot_out.txt
* rewrite if not a complete match
This is resilient against future changes to the automatic
text written to boot_out.txt.
This also fixes rewriting boot_out.txt in the case where
boot.py prints something.
Perhaps it also saves a bit of code space. Some tricks:
* no need to close a file in read mode
* no need to switch on/off USB write access, going down to the
oofatfs layer doesn't check it anyway
This makes it possible for cooperative multitasking systems to keep running
event loops during garbage collector operations.
For example, this can be used to ensure that a motor control loop runs
approximately each 5 ms. Without this hook, the loop time can jump to
about 15 ms.
Addresses #3475.
Signed-off-by: Laurens Valk <laurens@pybricks.com>
This is an stm32-specific feature that's accessed via the pyb module, so
not something that will be widely enabled.
Signed-off-by: Damien George <damien@micropython.org>
This commit is a no-op change. Future improvements can come from making
individual boards use CORE or BASIC.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
Some of these will later be moved to CORE or BASIC, but EXTRA is a good
starting point based on what stm32 uses.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
Prior to this commit IRQs on STM32F4 could be lost because SR is cleared by
reading SR then reading DR. For example, if both RXNE and IDLE IRQs were
active upon entry to the IRQ handler, then IDLE is lost because the code
that handles RXNE comes first and accidentally clears SR (by reading SR
then DR to get the incoming character).
This commit fixes this problem by making the IRQ handler more atomic in the
following operations:
- get current IRQ status flags
- deal with RX character
- clear remaining status flags
- call user handler
On the STM32F4 it's very hard to get this right because the only way to
clear IRQ status flags is to read SR then DR, but the read of DR may read
some data which should remain in the register until the user wants to read
it. And it won't work to cache the read because RTS/CTS flow control will
then not work. So instead the new code disables interrupts if the DR is
full and waits for the user to read it before reenabling the interrupts.
Fixes issue mentioned in #4599 and #6082.
Signed-off-by: Damien George <damien@micropython.org>
Following on from ba940250a5, the change here
makes output about 15 times faster (now up to about 550 kbytes/sec).
tinyusb_cdcacm_write_queue will return the number of bytes written, so
there's no need to use tud_cdc_n_write_available.
Signed-off-by: Damien George <damien@micropython.org>
The easiest thing to implement was to use the i/j numbers, but they were not
directly related to image x/y coordinates. This may slow things down a tiny
little bit, but it looks much better.
This will be used by https://micropython.org/download/ to generate the
full listing of boards and firmware files.
Optionally supports a board.md for additional customisation of the
download page, as well as deploy.md for flashing instructions.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
