Hoernchen has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ccid-firmware/+/42307?usp=email )
Change subject: firmware: enable watchdog timer ......................................................................
firmware: enable watchdog timer
2s is plenty, and while not perfect it should at least ensure that hangs that require manual intervention happen rarely if at all.
At least from a custimer POV having resets in case something breaks is better than ending up with non working devices that are stuck.
Change-Id: I1ef1fc70d33492efe0171a7879c1a23f16957195 --- M sysmoOCTSIM/main.c 1 file changed, 14 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ccid-firmware refs/changes/07/42307/1
diff --git a/sysmoOCTSIM/main.c b/sysmoOCTSIM/main.c index 74de4bf..75fb4ad 100644 --- a/sysmoOCTSIM/main.c +++ b/sysmoOCTSIM/main.c @@ -685,6 +685,17 @@ printf("Chip ID: %s\r\n", sernr_buf); printf("Reset cause: %s\r\n", rstcause_buf);
+ /* Configure and enable WDT with ~2s timeout (2048 cycles @ 1.024 kHz) */ + while (WDT->SYNCBUSY.reg) + ; + WDT->CONFIG.reg = WDT_CONFIG_PER_CYC2048; + while (WDT->SYNCBUSY.reg) + ; + WDT->CTRLA.reg = WDT_CTRLA_ENABLE; + while (WDT->SYNCBUSY.reg) + ; + printf("Watchdog enabled (2s timeout)\r\n"); + talloc_enable_null_tracking(); g_tall_ctx = talloc_named_const(NULL, 0, "global"); printf("g_tall_ctx=%p\r\n", g_tall_ctx); @@ -737,6 +748,9 @@ } feed_ccid(); osmo_timers_update(); + + /* Pet the watchdog */ + WDT->CLEAR.reg = WDT_CLEAR_CLEAR_KEY; int qs = llist_count_at(&g_ccid_s.free_q); if (qs > NUM_OUT_BUF) for (int i = 0; i < qs - NUM_OUT_BUF; i++) {
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Hoernchen