From 55df258e965d10dc5af118ab8d7eee2a9e8a1e7c Mon Sep 17 00:00:00 2001
From: ZhongUncle <2020738339@qq.com>
Date: Thu, 28 Mar 2024 23:39:12 +0800
Subject: [PATCH] fix dht.c error

---
 gpio/dht_sensor/dht.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/gpio/dht_sensor/dht.c b/gpio/dht_sensor/dht.c
index c9ce8748c..9163ea02b 100644
--- a/gpio/dht_sensor/dht.c
+++ b/gpio/dht_sensor/dht.c
@@ -48,8 +48,12 @@ void read_from_dht(dht_reading *result) {
 
     gpio_set_dir(DHT_PIN, GPIO_OUT);
     gpio_put(DHT_PIN, 0);
-    sleep_ms(20);
+    sleep_ms(18);
+    gpio_put(DHT_PIN,1);
+    sleep_us(40);
+    
     gpio_set_dir(DHT_PIN, GPIO_IN);
+    
 
 #ifdef LED_PIN
     gpio_put(LED_PIN, 1);
@@ -66,7 +70,7 @@ void read_from_dht(dht_reading *result) {
 
         if ((i >= 4) && (i % 2 == 0)) {
             data[j / 8] <<= 1;
-            if (count > 16) data[j / 8] |= 1;
+            if (count > 35) data[j / 8] |= 1;
             j++;
         }
     }