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Leaf only starts hunting for a new slot after 3 timeouts. Makes the system more stable.

This commit is contained in:
maniacbug 2011-05-13 21:00:26 -07:00
parent 33edb1f18a
commit e86c6b0f15
1 changed files with 8 additions and 1 deletions
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7
examples/starping_relay/starping_relay.pde
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@ -165,9 +165,11 @@ void payload_printf(const char* name, const payload_t& pl)
static unsigned long last_ping_sent_at; static unsigned long last_ping_sent_at;
static bool waiting_for_pong = false; static bool waiting_for_pong = false;
static short consecutive_timeouts;
const unsigned long ping_delay = 2000; // ms const unsigned long ping_delay = 2000; // ms
const unsigned long pong_timeout = 250; // ms const unsigned long pong_timeout = 250; // ms
const unsigned long ping_phase_shift = 100; // ms const unsigned long ping_phase_shift = 100; // ms
const short timeout_shift_threshold = 3;
void setup(void) void setup(void)
{ {
@ -337,6 +339,7 @@ void loop(void)
{ {
// Not waiting anymore, got one. // Not waiting anymore, got one.
waiting_for_pong = false; waiting_for_pong = false;
consecutive_timeouts = 0;
// Dump the payloads until we've gotten everything // Dump the payloads until we've gotten everything
payload_t payload; payload_t payload;
@ -363,6 +366,10 @@ void loop(void)
// getting a pong just as we are trying to get a ping. The best thing // getting a pong just as we are trying to get a ping. The best thing
// to do right now is offset our ping timing to search for a slot // to do right now is offset our ping timing to search for a slot
// that's not occupied. // that's not occupied.
//
// Only do this after getting a few timeouts, so we aren't always skittishly
// moving around the cycle.
if ( ++consecutive_timeouts > timeout_shift_threshold )
last_ping_sent_at += ping_phase_shift; last_ping_sent_at += ping_phase_shift;
// Print details // Print details