Steve Karg
47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
## Port of BACnet/IP to LwIP 2.x
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This LwIP BACnet/IP port uses a Makefile designed to be used from
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the continuous integration pipeline. The container is configured with
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Ubuntu Linux and uses APT to install liblwip-dev library and header files.
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This build method ensures that the code is valid for the particular LwIP
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library that is released with Ubuntu.
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## Integration Hints
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Developer must set the IP address, netmask, and UDP port into the BACnet/IP module.
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Integration used a main loop bare metal design, shown here as an example.
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int main(void)
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{
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static bool valid_ip_address = false;
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static bool bacnet_ip_initialized = false;
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bacnet_init();
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LwIP_Init();
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/* Infinite loop */
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for (;;) {
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/* Periodic tasks */
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LwIP_Periodic_Handler();
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/* Run when there is a valid IP address */
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if (netif.ip_addr.addr != 0) {
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if (!valid_ip_address) {
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valid_ip_address = true;
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bip_set_addr(netif.ip_addr.addr);
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bip_set_broadcast_addr(
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(netif.ip_addr.addr & netif.netmask.addr) |
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(~netif.netmask.addr));
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} else {
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if (bacnet_ip_initialized) {
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bacnet_task();
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} else {
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bip_init(NULL);
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bacnet_ip_initialized = true;
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}
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}
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} else {
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valid_ip_address = false;
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}
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}
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}
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