2 files changed, 4 insertions, 2 deletions
diff --git a/testhal/STM32F4xx/IRQ_STORM/Makefile b/testhal/STM32F4xx/IRQ_STORM/Makefile
index ea6defde6..481d607ba 100644
--- a/testhal/STM32F4xx/IRQ_STORM/Makefile
+++ b/testhal/STM32F4xx/IRQ_STORM/Makefile
@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif
diff --git a/testhal/STM32F4xx/IRQ_STORM/main.c b/testhal/STM32F4xx/IRQ_STORM/main.c
index bc34ba149..4994e77e3 100644
--- a/testhal/STM32F4xx/IRQ_STORM/main.c
+++ b/testhal/STM32F4xx/IRQ_STORM/main.c
@@ -286,7 +286,9 @@ int main(void) {
     println("");
     saturated = FALSE;
     threshold = 0;
-    for (interval = 2000; interval >= 10; interval -= interval / 10) {
+    for (interval = 2000;
+        interval >= 2;
+        interval -= (interval + 9) / 10) {
       gptStartContinuous(&GPTD4, interval - 1); /* Slightly out of phase.*/
       gptStartContinuous(&GPTD3, interval + 1); /* Slightly out of phase.*/
       chThdSleepMilliseconds(1000);