Kari Argillander
cb243c36a8
* Change MIT license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change GPL exception license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change misc license texts to SPDX-License-Identifier There are some external code in repo which are not licenses as most of the stuff in this repo. We still want every file to have SPDX identifier to easily grep licenses. * Add currently used license files Even though Bacnet-Stack is using SPDX identifiers we still need to give those license files with source. For this reason add all license files to license/ folder. SPDX has also files which would make same thing but this is style which example Linux kernel is using and it is quite clear so I choose that one for now. I choosed not yet bring CC-PDDC as that is not right license for those files. --------- Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
Port of BACnet/IP to LwIP 2.x
This LwIP BACnet/IP port uses a Makefile designed to be used from the continuous integration pipeline. The container is configured with Ubuntu Linux and uses APT to install liblwip-dev library and header files. This build method ensures that the code is valid for the particular LwIP library that is released with Ubuntu.
Integration Hints
Developer must set the IP address, netmask, and UDP port into the BACnet/IP module.
Integration used a main loop bare metal design, shown here as an example.
int main(void)
{
static bool valid_ip_address = false;
static bool bacnet_ip_initialized = false;
bacnet_init();
LwIP_Init();
/* Infinite loop */
for (;;) {
/* Periodic tasks */
LwIP_Periodic_Handler();
/* Run when there is a valid IP address */
if (netif.ip_addr.addr != 0) {
if (!valid_ip_address) {
valid_ip_address = true;
bip_set_addr(netif.ip_addr.addr);
bip_set_broadcast_addr(
(netif.ip_addr.addr & netif.netmask.addr) |
(~netif.netmask.addr));
} else {
if (bacnet_ip_initialized) {
bacnet_task();
} else {
bip_init(NULL);
bacnet_ip_initialized = true;
}
}
} else {
valid_ip_address = false;
}
}
}