gxht30

main.c

@@ -3,6 +3,7 @@
 #include "ch32fun.h"
 #include "ch32v20xhw.h"
 #include "ethernetif.h"
+#include "gxht30_hw_i2c.h"
 #include "lwip/apps/httpd.h"
 #include "lwip/dhcp.h"
 #include "lwip/init.h"
@@ -25,6 +26,8 @@
 #define PLL_MULTIPLIER 15
 
 #define STATS_PRINT_INTERVAL_MS 10000
+#define SENSOR_READ_INTERVAL_MS 5000
+#define STATUS_READ_INTERVAL_MS 30000
 
 struct netif g_netif;
 static volatile int g_httpd_is_initialized = 0;
@@ -178,10 +181,17 @@ void ethernetif_print_stats(void) {
 int main() {
   SystemInit();
   set_sysclk_to_120mhz_from_hse();
+  print_clock_registers();
+
   systick_init();
   led_init();
   lwip_stack_init();
 
+  gxht30_i2c_init();
+
+  gxht30_soft_reset(GXHT30_I2C_ADDR_DEFAULT);
+  Delay_Ms(10);
+
   uint32_t last_led_toggle_time = 0;
   uint32_t last_link_poll_time = 0;
 #if LWIP_STATS
@@ -189,6 +199,14 @@ int main() {
 #endif
   int led_state = 0;
 
+  uint32_t last_sensor_read_time = 0;
+  uint32_t last_status_read_time = 0;
+
+  GXHT30_Data sensor_data = {0};
+  GXHT30_Status sensor_status = {0};
+
+  printf("GXHT30 Sensor initialized\n");
+
   while (1) {
     ethernetif_input(&g_netif);
     sys_check_timeouts();
@@ -205,6 +223,60 @@ int main() {
     }
 #endif
 
+    // Read sensor data periodically
+    if (millis() - last_sensor_read_time > SENSOR_READ_INTERVAL_MS) {
+      if (gxht30_read_data(GXHT30_I2C_ADDR_DEFAULT, &sensor_data) ==
+          GXHT30_OK) {
+        int16_t temp_int = (int16_t)(sensor_data.temperature * 100);
+        int16_t hum_int = (int16_t)(sensor_data.humidity * 100);
+
+        int16_t temp_whole = temp_int / 100;
+        int16_t temp_decimal = temp_int % 100;
+        if (temp_decimal < 0) temp_decimal = -temp_decimal;
+
+        int16_t hum_whole = hum_int / 100;
+        int16_t hum_decimal = hum_int % 100;
+
+        printf("Temperature: %d.%02d C | Humidity: %d.%02d %%\n", temp_whole,
+               temp_decimal, hum_whole, hum_decimal);
+      } else {
+        printf("Sensor error: %d\n", sensor_data.error);
+      }
+      last_sensor_read_time = millis();
+    }
+
+    // Read status register periodically
+    if (millis() - last_status_read_time > STATUS_READ_INTERVAL_MS) {
+      if (gxht30_read_status(GXHT30_I2C_ADDR_DEFAULT, &sensor_status) ==
+          GXHT30_OK) {
+        printf("Status: ");
+
+        if (sensor_status.alert_pending) printf("ALERT ");
+        if (sensor_status.heater_on) printf("HEATER_ON ");
+        if (sensor_status.humidity_alert) printf("HUM_ALERT ");
+        if (sensor_status.temperature_alert) printf("TEMP_ALERT ");
+        if (sensor_status.reset_detected) printf("RESET ");
+        if (sensor_status.command_status) printf("CMD_ERR ");
+        if (sensor_status.crc_status) printf("CRC_ERR ");
+
+        if (sensor_status.raw_status == 0x0010) {
+          printf("OK (reset detected on startup)");
+        } else if (sensor_status.raw_status == 0x0000) {
+          printf("OK");
+        }
+
+        printf("\n");
+
+        // Clear reset flag after first read if you want
+        // if (sensor_status.reset_detected) {
+        //   gxht30_clear_status(GXHT30_I2C_ADDR_DEFAULT);
+        // }
+      } else {
+        printf("Status read error\n");
+      }
+      last_status_read_time = millis();
+    }
+
     // uint32_t now = millis();
     // if (now - last_led_toggle_time > LED_TOGGLE_INTERVAL_MS) {
     //   if (led_state) {