Instead of using the fixed machine_spi_type entity to get the SPI transfer
function, this transfer function is now extracted dynamically from the type
of the SPI object.
This allows the SPI object used to communicate with the WIZNET5K hardware
to be SoftSPI or hardware SPI, or anything that has the SPI protocol (at
the C level).
Signed-off-by: Damien George <damien@micropython.org>
Avoiding conflicts between the IRQ and an active transfers. Before this
change the device could lock up in heavy traffic situations.
Fix found and code supplied by @omogenot.
If nic.active(True) is called several times in a row, the device may lock
up. Even if that is bad coding practice, calling wiznet5k_deinit() in
wiznet5k_init() prevents the lock.
Drop an obsolete and wrong argument check, which prevented specifying a pin
for the interrupt signal. The proper checks are now done further down in
the code.
Originally based on both stm32/network_wiznet5k and stm32/modnwwiznet5k.
If MICROPY_PY_LWIP is enabled it uses the lwIP TCP stack in MicroPython,
communicating with the Wiznet controller in MACRAW mode. In this mode it
supports using the INTN pin from Wiznet controller to receive data from an
interrupt trigger.
If lwIP is not enabled, it runs in modnetwork/socket mode providing an
interface to the TCP stack running on the Wiznet controller chip. In this
mode it includes some updates by @irinakim12 from #8021, most notably
bringing in DHCP support.
Supports defining hardware pins in board config or dynamically set at
runtime. Sets a default MAC address in the random namespace from board
unique-id.
Signed-off-by: Andrew Leech <andrew@alelec.net>
Damien George
robert-hh
Andrew Leech