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10 Commits

Author SHA1 Message Date
Damien George 71f3ade770 ports: Support legacy soft I2C/SPI construction via id=-1 arg. 
With a warning that this way of constructing software I2C/SPI is
deprecated.  The check and warning will be removed in a future release.

This should help existing code to migrate to the new SoftI2C/SoftSPI types.

Signed-off-by: Damien George <damien@micropython.org>
 2020-10-01 12:57:10 +10:00
Damien George 39d50d129c ports: Add SoftI2C and SoftSPI to machine module where appropriate. 
Previous commits removed the ability for one I2C/SPI constructor to
construct both software- or hardware-based peripheral instances.  Such
construction is now split to explicit soft and non-soft types.

This commit makes both types available in all ports that previously could
create both software and hardware peripherals: machine.I2C and machine.SPI
construct hardware instances, while machine.SoftI2C and machine.SoftSPI
create software instances.

This is a breaking change for use of software-based I2C and SPI.  Code that
constructed I2C/SPI peripherals in the following way will need to be
changed:

    machine.I2C(-1, ...)            ->  machine.SoftI2C(...)
    machine.I2C(scl=scl, sda=sda)   ->  machine.SoftI2C(scl=scl, sda=sda)

    machine.SPI(-1, ...)            ->  machine.SoftSPI(...)
    machine.SPI(sck=sck, mosi=mosi, miso=miso)
                        ->  machine.SoftSPI(sck=sck, mosi=mosi, miso=miso)

Code which uses machine.I2C and machine.SPI classes to access hardware
peripherals does not need to change.

Signed-off-by: Damien George <damien@micropython.org>
 2020-10-01 12:57:10 +10:00
Maureen Helm f842e32155 zephyr: Const-ify struct device instance pointers. 
Zephyr v2.4.0 added a const qualifier to usages of struct device to
allow storing device driver instances exclusively in flash and thereby
reduce ram footprint.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
 2020-09-30 23:21:53 +10:00
Maureen Helm ce49be43b1 zephyr: Replace zephyr integer types with C99 types. 
Zephyr v2.4.0 stopped using custom integer types in favor of C99 types
instead.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
 2020-09-30 23:21:53 +10:00
Maureen Helm db02cb061d zephyr: Update for refactored zephyr device structures. 
Updates the zephyr port to use refactored device structures introduced in
zephyr 2.3.
 2020-06-12 10:24:46 +10:00
Jim Mussared def76fe4d9 all: Use MP_ERROR_TEXT for all error messages. 2020-04-05 15:02:06 +10:00
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
Maureen Helm c25e12d0dd zephyr: Update include paths for Zephyr v2.0. 
Zephyr restructured its includes in v2.0 and removed compatibility shims
after two releases in commit 1342dadc365ee22199e51779185899ddf7478686.
Updates include paths in MicroPython accordingly to fix build errors in
the zephyr port.

These changes are compatible with Zephyr v2.0 and later.
 2020-02-04 17:09:19 +11:00
Damien George 647b27d028 zephyr/machine_i2c: Update to support new C-level I2C API. 2019-05-20 15:04:29 +10:00
Maureen Helm 2befcb8a9d zephyr/i2c: Add support for hardware i2c. 
Adds support for hardware i2c to the zephyr port. Similar to other ports
such as stm32 and nrf, we only implement the i2c protocol functions
(readfrom and writeto) and defer memory operations (readfrom_mem,
readfrom_mem_into, and writeto_mem) to the software i2c implementation.
This may need to change in the future because zephyr is considering
deprecating its i2c_transfer function in favor of i2c_write_read; in this
case we would probably want to implement the memory operations directly
using i2c_write_read.

Tested with the accelerometer on frdm_k64f and bbc_microbit boards.
 2019-03-26 16:16:26 +11:00