Same as in the main code.
Use Timer1 as baudrate generator.
Timer1 can be programmed to have the same accuracy and deviation as
Timer2, up to 115200 at F_SYS = 125 Mhz. See comment
setup_serial_timer1() comment for valid baudrates and settings.
Timer1 is used in 8-bit auto-reload mode.
Only differance is that the serial is transmit only and poll-based so no
interrupts are used to transmit data.
TI-interrupt flag is used in the code, this is only
fine when SERIAL-interrupt is not enabled/used but
when is it used, it generates an interrupt which is
not handled, so it keeps generating interrupts and
trashing the performance and caused starvation on
lower priority interrupts like TIMER 2.
Use an extra flag to signal to the code that the
TX-buffer is empty.
Use Timer1 as baudrate generator.
Timer1 can be programmed to have the same accuracy and deviation as
Timer2, up to 115200 at F_SYS = 125 Mhz. See comment
setup_serial_timer1() comment for valid baudrates and settings.
Timer1 is used in 8-bit auto-reload mode.
Timer2 16-bit auto-reload can now be used for other tasks like SYS_TICK.
Downside of Timer0 is, we have to manually reload
the timer value. Timer2 can do that automaticly.
This saves a lot of time in the interrupt-handler
of the Timer.
Currently Timer2 is used for baudrate-generation
but in a separete commit this is moved to Timer1.
A `%` modulo operator was used instead of a
`&` and-operator, to split a 16 bit value into two
8 bit values.
This causes that the SYSTICKs were 0.1% too fast.
Replace the manual split with a sfr16 type, so the
compiler does the split for us.
This adds an implementation for trapping IGMP packets to the CPU
which will identify IGMPv1/2/3 packets, but handle only v3.
The implementation then inserts/updates/deletes L3 MC entries
in the L3 lookup table. The entries consist of an Ipv4
Destination IP (the IPv4 MC address), a Source IP (0.0.0.0) and
a Portmask. Note that this implementation is not VLAN aware,
as there is no hardware support in the device.
An alternative strategy is to control switching of the L2-MC packets
in which the IPv4-MC packets are transported (dst-MaC is
01:00:5e:xx:yy:zz, with xx:yy:zz corresponding to bits in the Ipv4-MC
address). This will allow to use VLAN-aware packet switching. While
code support is there for table insert/update/deletes, some further
L2 configuration is missing.
There is no support for IPv6 MC, yet.
The RTL8272/3 use 2 32 bit registers to indicate the MAC link speed, the
second register is used for ports 8 and 9, where 9 is the CPU port.
Use both registers.
The Makefile has the version number and generates a version.h which
has VERSION_SW define that looks like "v<VERSION>-g<GIT_SHORT_HASH>".
Software version shows at boot in the serial console.
And shown with command: `version`.
It can also be requested via `information.json`.
```
{
"ip_address": "192.168.10.247",
"ip_gateway": "192.168.10.1",
"ip_netmask": "255.255.255.0",
"mac_address": "1c:2a:a3:23:00:02",
"sw_ver": "v0.1.0-gd48235f",
"hw_ver": "SWGT024-V2.0"
}
```
Adds a timeer for calling the STP state machine which currently sends out
CNF (HELLO) packages.
Identifies incoming STP packets and calls the stp_in() routine to handle these.
So instead do it manual split a uint16_t in to two uint8_t.
The compiler can do it, so reduces user error.
Note: compiler writes the lower/LSB part first.
When that is importent this can´t be used.
Assembly is still the same except note above.
logicog
René van Dorst
logicog
Tobias Diedrich