doc: update some comments for doxygen style

include/zh_160x_i2c.h

@@ -1,9 +1,13 @@
+/**
+ * @file zh_160x_i2c.h
+ */
+
 #pragma once
 
 #include "zh_pcf8574.h"
 
-#define ZH_LCD_16X2 1
-#define ZH_LCD_16X4 0
+#define ZH_LCD_16X2 1 /*!< LCD size 16x2. */
+#define ZH_LCD_16X4 0 /*!< LCD size 16x3. */
 
 #ifdef __cplusplus
 extern "C"

version.txt

@@ -1 +1 @@
-3.0.0
+3.0.1

zh_160x_i2c.c

@@ -22,9 +22,9 @@ static const char *TAG = "zh_160x_i2c";
 
 #define LCD_160X_PULSE                       \
     zh_pcf8574_write_gpio(handle, 2, true);  \
-    esp_delay_us(300);                       \
+    esp_delay_us(500);                       \
     zh_pcf8574_write_gpio(handle, 2, false); \
-    esp_delay_us(400);
+    esp_delay_us(500);
 
 static void _zh_160x_lcd_init(zh_pcf8574_handle_t *handle);
 static void _zh_160x_send_command(zh_pcf8574_handle_t *handle, uint8_t command);