example adding lptimer to stm32 and using it

there is no real secondary lptimer on stm32 therefor timer3 is used
RIOT-OS · Jul 19, 2022 · 6057078 · 6057078
1 parent b75433a
commit 6057078
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diff --git a/boards/common/stm32/include/cfg_timer_tim2.h b/boards/common/stm32/include/cfg_timer_tim2.h
@@ -47,10 +47,18 @@ static const timer_conf_t timer_config[] = {
 #endif
         .bus      = APB1,
         .irqn     = TIM2_IRQn
-    }
+    },
+    {
+        .dev      = TIM3,
+        .max      = 0xffffffff,
+        .rcc_mask = RCC_APB1ENR_TIM3EN,
+        .bus      = APB1,
+        .irqn     = TIM3_IRQn
+    },
 };
 
 #define TIMER_0_ISR         isr_tim2
+#define TIMER_1_ISR         isr_tim3
 
 #define TIMER_NUMOF         ARRAY_SIZE(timer_config)
 /** @} */

diff --git a/tests/ztimer_xsec/Makefile b/tests/ztimer_xsec/Makefile
@@ -4,5 +4,8 @@ USEMODULE += ztimer
 USEMODULE += ztimer_usec
 USEMODULE += ztimer_msec
 USEMODULE += ztimer_sec
+USEMODULE += ztimer_periph_lptimer
+
+CFLAGS += "-DCONFIG_ZTIMER_LPTIMER_DEV=TIMER_DEV(1)" "-DCONFIG_ZTIMER_LPTIMER_FREQ=1000LU" "-DCONFIG_ZTIMER_LPTIMER_WIDTH=32" "-DCONFIG_ZTIMER_LPTIMER_BLOCK_PM_MODE=ZTIMER_CLOCK_NO_REQUIRED_PM_MODE"
 
 include $(RIOTBASE)/Makefile.include