watchdog: cmsdk_apb: reset state before starting (1f02f39b) · Commits · Wenxi XU / zephyr

Reset the watchdog back to the initial state before enabling the expiry interrupt. This prevents the watchdog expiring immediately if there is a long gap between `wdt_install_timeout` and `wdt_setup`. Signed-off-by:

Jordan Yates <jordan@embeint.com>

drivers/watchdog/wdt_cmsdk_apb.c

+4 −0

Changes for drivers/watchdog/wdt_cmsdk_apb.c: 4 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -88,6 +88,10 @@ static int wdog_cmsdk_apb_setup(const struct device *dev, uint8_t options)
		ARG_UNUSED(dev);
		ARG_UNUSED(options);

		/* Reset pending interrupts before starting */
		wdog->intclr = CMSDK_APB_WDOG_INTCLR;
		wdog->load = reload_cycles;

		/* Start the watchdog counter with INTEN bit */
		wdog->ctrl = (CMSDK_APB_WDOG_CTRL_RESEN \| CMSDK_APB_WDOG_CTRL_INTEN);

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