1 files changed, 43 insertions, 0 deletions
diff --git a/stm32l4xx_it.c b/stm32l4xx_it.c
new file mode 100644
index 0000000..999bd04
--- /dev/null
+++ b/stm32l4xx_it.c
@@ -0,0 +1,43 @@
+#include <stdint.h>
+
+static uint32_t ticks = 0;
+
+void delay(uint32_t count)
+{
+	uint32_t target = ticks + count;
+	while (ticks < target);
+}
+
+void NMI_Handler(void) {}
+
+void HardFault_Handler(void)
+{
+  while (1);
+}
+
+void MemManage_Handler(void)
+{
+  while (1);
+}
+
+void BusFault_Handler(void)
+{
+  while (1);
+}
+
+void UsageFault_Handler(void)
+{
+  while (1);
+}
+
+void SVC_Handler(void) {}
+
+void DebugMon_Handler(void) {}
+
+void PendSV_Handler(void) {}
+
+void SysTick_Handler(void)
+{
+  ticks++;
+}
+