From ccdbab6f0110237f9303cb9e45804c6e7e2a7847 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang.hottgenroth@icloud.com>
Date: Sat, 6 Feb 2021 18:10:17 +0100
Subject: [PATCH] higher frequency

---
 cube/Core/Src/tim.c   | 2 +-
 cube/User/Src/main2.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/cube/Core/Src/tim.c b/cube/Core/Src/tim.c
index 93a3fa9..93f02eb 100644
--- a/cube/Core/Src/tim.c
+++ b/cube/Core/Src/tim.c
@@ -34,7 +34,7 @@ void MX_TIM1_Init(void)
   TIM_IC_InitTypeDef sConfigIC = {0};
 
   htim1.Instance = TIM1;
-  htim1.Init.Prescaler = 71;
+  htim1.Init.Prescaler = 35;
   htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
   htim1.Init.Period = 65535;
   htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
diff --git a/cube/User/Src/main2.c b/cube/User/Src/main2.c
index 328e3c2..91007ac 100644
--- a/cube/User/Src/main2.c
+++ b/cube/User/Src/main2.c
@@ -95,7 +95,8 @@ void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim) {
         } else if (state == 1) {
             show(DEBUG_2, OFF);
             uint32_t captured = (savedV < v) ? (v - savedV) : ((htim->Init.Period - savedV) + v);
-            logMsg("CCR: %ld", captured);
+            double f = 1.0 / ((double)captured) * 1.0e6 * 2;
+            logMsg("CCR: %ld, %f", captured, f);
             state = 0;
         } else {
             state = 0;