add untested driver prototype for DHT11 humidity and temperature sensor

Core/Inc/dht11.h

@@ -0,0 +1,30 @@
+#ifndef __DHT11
+#define __DHT11
+
+#define SKIP_LOW while (!(GPIOD->IDR & 0x0800)) {}
+#define SKIP_HIGH while (GPIOD->IDR & 0x0800) {}
+
+#define FILL_REGISTER do { \
+	for (int i = 0; i < 8; i++) { \
+		read_register <<= 1; \
+		SKIP_LOW; \
+		read_register |= dht11_measure_high_duration(); \
+	} } while (0)
+
+struct SysTickConfig {
+	uint32_t ctrl;
+	uint32_t load;
+	uint32_t val;
+};
+
+struct DHT11_Data {
+	uint8_t humid_integral;
+	uint8_t humid_decimal;
+	uint8_t temp_integral;
+	uint8_t temp_decimal;
+	uint8_t crc;
+};
+
+void dht11_show_both(void);
+
+#endif