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en:arduino:libraries:ethernetmaintain [2016/12/25 22:15] (当前版本) |
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+ | [[en:arduino:libraries:ethernet|Ethernet]] | ||
+ | ====== Ethernet.maintain() ====== | ||
+ | |||
+ | ===== Description ===== | ||
+ | |||
+ | Allows for the renewal of DHCP leases. When assigned an IP address via DHCP, ethernet devices are given a lease on the address for an amount of time. With Ethernet.maintain(), it is possible to request a renewal from the DHCP server. Depending on the server's configuration, you may receive the same address, a new one, or none at all. | ||
+ | |||
+ | Ethernet.maintain() was added to Arduino 1.0.1. | ||
+ | ===== Syntax ===== | ||
+ | |||
+ | Ethernet.maintain(); | ||
+ | ===== Parameters ===== | ||
+ | |||
+ | none | ||
+ | ===== Returns ===== | ||
+ | <code> | ||
+ | byte: | ||
+ | 0: nothing happened | ||
+ | 1: renew failed | ||
+ | 2: renew success | ||
+ | 3: rebind fail | ||
+ | 4: rebind success | ||
+ | </code> | ||
+ | |||
+ | |||
+ | [[en:arduino:libraries|Reference Home]] |