added slow lptim to BSP_POWER

Application/BSP/BSP_POWER.c

@@ -0,0 +1,19 @@
+
+
+#include "BSP_POWER.h"
+#include "lptim.h"
+#include "ulog.h"
+
+#define LPTIM_CLK 500     // Hz
+#define SLEEP_TIME 10     // seconds to wait
+
+void BSP_POWER_Init() {
+    uint16_t counter = LPTIM_CLK * SLEEP_TIME;
+    HAL_LPTIM_Counter_Start_IT(&hlptim4, counter);
+}
+
+
+void HAL_LPTIM_AutoReloadMatchCallback(LPTIM_HandleTypeDef *hlptim) {
+
+
+}