From c6ee909aa47aa576ca7e8dc2865db3b5fcb257fc Mon Sep 17 00:00:00 2001
From: "Sergio R. Caprile" <scaprile@cesanta.com>
Date: Mon, 14 Jul 2025 15:12:50 -0300
Subject: [PATCH] uint16_t always >= 0

---
 tutorials/mqtt/mqtt-dashboard/device/hal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tutorials/mqtt/mqtt-dashboard/device/hal.c b/tutorials/mqtt/mqtt-dashboard/device/hal.c
index 8f50c448..4d2a9bdd 100644
--- a/tutorials/mqtt/mqtt-dashboard/device/hal.c
+++ b/tutorials/mqtt/mqtt-dashboard/device/hal.c
@@ -7,7 +7,7 @@ static bool s_pins[MAX_PIN_NO];
 
 bool gpio_write(uint16_t pin, bool status) {
   bool ok = false;
-  if (pin >= 0 && pin < MAX_PIN_NO) {
+  if (pin < MAX_PIN_NO) {
     s_pins[pin] = status;
     ok = true;
   }
@@ -15,5 +15,5 @@ bool gpio_write(uint16_t pin, bool status) {
 }
 
 bool gpio_read(uint16_t pin) {
-  return (pin >= 0 && pin < MAX_PIN_NO) ? s_pins[pin] : false;
+  return (pin < MAX_PIN_NO) ? s_pins[pin] : false;
 }