From f2824f6a68b3d326e0f4a137880e08147a0074d2 Mon Sep 17 00:00:00 2001
From: microDev <70126934+microDev1@users.noreply.github.com>
Date: Mon, 16 Nov 2020 12:55:55 +0530
Subject: [PATCH] update frequency measurement

---
 ports/esp32s2/common-hal/frequencyio/FrequencyIn.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/ports/esp32s2/common-hal/frequencyio/FrequencyIn.c b/ports/esp32s2/common-hal/frequencyio/FrequencyIn.c
index ec7ebb21ac..bdbe782add 100644
--- a/ports/esp32s2/common-hal/frequencyio/FrequencyIn.c
+++ b/ports/esp32s2/common-hal/frequencyio/FrequencyIn.c
@@ -84,12 +84,9 @@ void common_hal_frequencyio_frequencyin_construct(frequencyio_frequencyin_obj_t*
         .pulse_gpio_num = pin->number,
         .ctrl_gpio_num = PCNT_PIN_NOT_USED,
         .channel = PCNT_CHANNEL_0,
-        .lctrl_mode = PCNT_MODE_DISABLE,
-        .hctrl_mode = PCNT_MODE_KEEP,
+        // What to do on the positive / negative edge of pulse input?
         .pos_mode = PCNT_COUNT_INC,  // count both rising and falling edges
         .neg_mode = PCNT_COUNT_INC,
-        .counter_h_lim = 0,
-        .counter_l_lim = 0,
     };
 
     // Initialize PCNT unit
@@ -129,7 +126,7 @@ void common_hal_frequencyio_frequencyin_deinit(frequencyio_frequencyin_obj_t* se
 }
 
 uint32_t common_hal_frequencyio_frequencyin_get_item(frequencyio_frequencyin_obj_t* self) {
-    return (1000 / (self->capture_period / self->frequency));
+    return self->frequency;
 }
 
 void common_hal_frequencyio_frequencyin_pause(frequencyio_frequencyin_obj_t* self) {