Add DHT22 PIO reader and simplify display output

2026-10-26 01:23:32 +03:00 · 2026-05-02 20:00:57 +03:00
parent c5f2eebd2f
commit 63d7742e62
5 changed files with 172 additions and 26 deletions
@@ -0,0 +1,24 @@
+#ifndef DHT22_H
+#define DHT22_H
+
+#include "hardware/pio.h"
+#include "pico/types.h"
+
+typedef enum {
+    DHT22_OK = 0,
+    DHT22_TIMEOUT,
+    DHT22_CHECKSUM_ERROR,
+    DHT22_BUS_STUCK
+} dht22_status_t;
+
+typedef struct {
+    PIO pio;
+    uint sm;
+    uint pin;
+    uint offset;
+} dht22_t;
+
+dht22_status_t dht22_read(dht22_t *dev, int16_t *temperature_x10, uint16_t *humidity_x10);
+void dht22_init(dht22_t *dev, PIO pio, uint sm, uint pin);
+
+#endif