From 8f20fcde28d0f192dec593467885b7584a5a17f1 Mon Sep 17 00:00:00 2001
From: Kevin Thomas <kevin@mytechnotalent.com>
Date: Mon, 6 Apr 2026 17:26:05 -0400
Subject: [PATCH] fix(dht11_cbm): add dummy read on init to prevent first-read
 failure

---
 drivers/0x09_dht11_cbm/Src/main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/0x09_dht11_cbm/Src/main.c b/drivers/0x09_dht11_cbm/Src/main.c
index 5096d69..75efb11 100644
--- a/drivers/0x09_dht11_cbm/Src/main.c
+++ b/drivers/0x09_dht11_cbm/Src/main.c
@@ -88,10 +88,15 @@ static void _print_failure(void)
   */
 static void _dht11_setup(void)
 {
+  uint8_t dummy_h;
+  uint8_t dummy_t;
   xosc_set_clk_ref();
   dht11_timer_release_reset();
   dht11_timer_start_tick();
   dht11_init();
+  delay_ms(DHT11_POLL_MS);
+  dht11_read(&dummy_h, &dummy_t);
+  delay_ms(DHT11_POLL_MS);
   uart_puts("DHT11 driver initialized on GPIO4\r\n");
 }