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Add ESP-NOW heartbeat, client timeout, and slave reconnect.

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Slaves send HEARTBEAT every 1s; the master marks clients inactive after
3s without traffic and reactivates on reconnect. CLIENT_INFO reports
last_ping as milliseconds since the last packet, not uptime.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
skruecken
2026-05-18 22:39:10 +02:00
co-authored by Cursor
parent 16bfbd1091
commit 6cdca4f3ad
6 changed files with 282 additions and 85 deletions
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main/client_registry.h
+23 -3
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@@ -14,18 +14,38 @@ typedef struct {
bool available;
bool used;
uint8_t mac[CLIENT_MAC_LEN];
uint32_t last_ping;
uint32_t last_success_ping;
/** Milliseconds since boot when last packet was received from this client. */
uint32_t last_ping_at;
/** Milliseconds since boot when last heartbeat / SLAVE_INFO was accepted. */
uint32_t last_success_ping_at;
uint32_t version;
} client_info_t;
void client_registry_init(void);
/** Register or refresh a client; sets last_ping and last_success_ping to now. */
/** Milliseconds since boot (same clock as stored ping timestamps). */
uint32_t client_registry_now_ms(void);
/** Ms elapsed since timestamp; 0 if timestamp is 0. */
uint32_t client_registry_ms_since(uint32_t timestamp);
/** Register or refresh a client; updates both ping timestamps. */
esp_err_t client_registry_upsert(const uint8_t mac[CLIENT_MAC_LEN], uint32_t id,
uint32_t version, bool available, bool used,
bool *out_is_new);
/**
* Record a successful heartbeat (or initial slave info).
* Sets available=true and updates last_success_ping_at (and last_ping_at).
* If client was inactive, sets *out_reactivated=true.
*/
esp_err_t client_registry_heartbeat(const uint8_t mac[CLIENT_MAC_LEN],
uint32_t id, uint32_t version, bool used,
bool *out_is_new, bool *out_reactivated);
/** Mark clients inactive when last_success_ping_at is older than timeout_ms. */
void client_registry_check_timeouts(uint32_t timeout_ms);
size_t client_registry_count(void);
const client_info_t *client_registry_at(size_t index);
const client_info_t *client_registry_find_by_mac(const uint8_t mac[CLIENT_MAC_LEN]);