Commit Graph

21 Commits

Author SHA1 Message Date
Jim Mussared
0e7bfc88c6 all: Use mp_obj_malloc everywhere it's applicable.
This replaces occurences of

    foo_t *foo = m_new_obj(foo_t);
    foo->base.type = &foo_type;

with

    foo_t *foo = mp_obj_malloc(foo_t, &foo_type);

Excludes any places where base is a sub-field or when new0/memset is used.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2022-05-03 22:28:14 +10:00
iabdalkader
5562ed3f43 stm32/pyb_can: Replace CAN.initfilterbanks with CAN.init keyword arg.
The CAN.initfilterbanks() class method is removed, and its functionality is
replaced with the "num_filter_banks" keyword argument to the CAN
constructor and CAN.init().  This configures the filter bank split.

This new approach provides more flexibility configuring the resources used
by a given CAN instance, allowing other MCUs like H7 to fit the API.  It
also brings CAN closer to how other machine peripherals are configured,
where everything is done in the constructor/init method.

This is a breaking change to the CAN API.
2022-04-02 22:42:00 +11:00
iabdalkader
a79706fb39 stm32/pyb_can: Define the maximum bit timing parameters.
Define the maximum parameters for CAN/FDCAN nominal bit timing, and for
FDCAN data bit timing, for bit timing calculations.
2022-04-02 22:41:37 +11:00
iabdalkader
95104c9f6e stm32/pyb_can: Return the filter ID and type of received messages.
CAN.recv() now returns a 5-tuple, with the new element in the second
position being a boolean, True if the ID is extended.

This is a breaking change of the API for CAN.recv().
2022-04-02 22:40:09 +11:00
iabdalkader
e7264e9532 stm32/pyb_can: Add support for bus with mixed Classic/FD nodes.
A CAN bus can have mixed classic/FD nodes.  Prior to this patch the CAN API
could be configured for either standard or extended ID, but not both/mixed
operation.

This patch allows extended IDs to be filtered and enabled on a per-message
basis, in send(), setfilter() and clearfilter().

This is a breaking change to the API: init() no longer accepts the extframe
keyword argument.
2022-04-02 22:37:52 +11:00
iabdalkader
3320ec44ed stm32/pyb_can: Add support for CAN FD extended frame ID. 2022-04-02 22:37:45 +11:00
iabdalkader
ff287d085f stm32/pyb_can: Enable CAN FD frame support and BRS.
- Enable CAN FD frame support and BRS.
- Optimize the message RAM usage per FDCAN instance.
- Document the usage and different sections of the Message RAM.
2022-04-02 22:37:27 +11:00
Herwin Grobben
160e4d9a6d stm32/fdcan: Fix FIFO1 usage and handling of error interrupts.
The original code used a independent state with regards to the interrupt.
During heavy bus error conditions the internal state could become
out-of-sync with the interrupts.

Further explanation: during the development of an application using CAN
communication, a interrupt-run-away was found in some situations.  It was
found that the error interrupt triggered (Warning, Passive or Bus-Off, all
triggered it) the run-away.  The only recovery was a reset.

Two problems were found:
- the error interrupt is enabled but not cleared in the interrupt routine;
- an internal variable 'State' that was used to track the message received
  state (empty, new, full, overflow) that was not directly related to
  interrupt that indicated the state.

In this commit these issues are fixed by adding more values for the
interrupt reason (warning, passive, bus off) and clearing the error
interrupts, and making the internal state directly dependent on the
interrupt state for received messages.

Furthermore, introducing the FIFO1 in the CAN receive stage, another issue
existed.  Even if the messages are received into the FIFO1 (by selecting
message filtering for FIFO0 and FIFO1), the interrupt firing was indicating
FIFO0 Rx.  The configuration of the interrupts for this is now also fixed.
The CAN peripheral has 2 interrupt lines going into the NVIC controller.
The assignment of the interrupt reasons to these 2 interrupt lines was
missing.  Now the reception of FIFO1 messages triggers the second interrupt
line.  Other interrupts (Rx FIFO0 and bus error) are assigned to the first
interrupt line.

Tested on a Nucleo-G474, and also checked the HAL function to work with the
H7 family.
2022-01-27 23:01:08 +11:00
iabdalkader
20f8ce1982 stm32/pyb_can: Add ability to calculate CAN bit timing from baudrate.
Calculate the bit timing from baudrate if provided, allowing sample point
override.  This makes it a lot easier to make CAN work between different
MCUs with different clocks, prescalers etc.

Tested on F4, F7 and H7 Y/V variants.
2020-12-17 23:01:15 +11:00
Damien George
1e4e2644ec stm32: Add support for a board to reserve certain peripherals.
Allows reserving CAN, I2C, SPI, Timer and UART peripherals.  If reserved
the peripheral cannot be accessed from Python.

Signed-off-by: Damien George <damien@micropython.org>
2020-12-07 17:22:08 +11:00
iabdalkader
c299cc94e3 stm32/pyb_can: Handle timeout arg for FDCAN in pyb_can_send.
Following the documented pyb can_send behavior in pyb.CAN docs.
2020-07-09 00:38:56 +10:00
stijn
84fa3312cf all: Format code to add space after C++-style comment start.
Note: the uncrustify configuration is explicitly set to 'add' instead of
'force' in order not to alter the comments which use extra spaces after //
as a means of indenting text for clarity.
2020-04-23 11:24:25 +10:00
Jim Mussared
def76fe4d9 all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
Damien George
1a3e386c67 all: Remove spaces inside and around parenthesis.
Using new options enabled in the uncrustify configuration.
2020-03-28 23:36:44 +11:00
Damien George
69661f3343 all: Reformat C and Python source code with tools/codeformat.py.
This is run with uncrustify 0.70.1, and black 19.10b0.
2020-02-28 10:33:03 +11:00
Damien George
ad7213d3c3 py: Add mp_raise_msg_varg helper and use it where appropriate.
This commit adds mp_raise_msg_varg(type, fmt, ...) as a helper for
nlr_raise(mp_obj_new_exception_msg_varg(type, fmt, ...)).  It makes the
C-level API for raising exceptions more consistent, and reduces code size
on most ports:

   bare-arm:   +28 +0.042%
minimal x86:  +100 +0.067%
   unix x64:   -56 -0.011%
unix nanbox:  -300 -0.068%
      stm32:  -204 -0.054% PYBV10
     cc3200:    +0 +0.000%
    esp8266:   -64 -0.010% GENERIC
      esp32:  -104 -0.007% GENERIC
        nrf:  -136 -0.094% pca10040
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS
2020-02-13 11:52:40 +11:00
Damien George
d980d51807 stm32: Fix to build in nanbox mode. 2019-12-27 22:54:53 +11:00
Damien George
09376f0e47 py: Introduce MP_ROM_NONE macro for ROM to refer to None object.
This helps to prevent mistakes, and allows easily changing the ROM value of
None if needed.
2019-12-27 22:51:17 +11:00
Damien George
ca8ff99e8c stm32: Use mp_printf with MICROPY_ERROR_PRINTER for uncaught exceptions. 2019-09-23 17:15:07 +10:00
iabdalkader
f7a07b3605 stm32: Add support for FDCAN peripheral, exposed as pyb.CAN.
The new fdcan.c file provides the low-level C interface to the FDCAN
peripheral, and pyb_can.c is updated to support both traditional CAN and
FDCAN, depending on the MCU being compiled for.
2019-09-23 17:00:54 +10:00
Damien George
d06fd384c2 stm32/can: Factor CAN driver into low-level and Python bindings.
can.c now contains the low-level C interface to the CAN peripheral, and
pyb_can.c the Python-level class/methods/constants.
2019-09-23 16:58:08 +10:00