linuxsmartie used SPLASH

good measure

include/lcd.h

@@ -19,6 +19,8 @@ struct lcd_t {
 typedef uint8_t lcd_glyph_t[8];
 
 void lcd_close(struct lcd_t *lcd);
+void lcd_reinit(struct lcd_t *lcd);
+void lcd_splash(struct lcd_t *lcd);
 void lcd_clear(struct lcd_t *lcd);
 void lcd_set_contrast(struct lcd_t *lcd, uint8_t contrast);
 void lcd_set_backlight(struct lcd_t *lcd, bool enabled);

src/lcd.c

@@ -3,12 +3,11 @@
 #include <fcntl.h>
 #include <stdarg.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <string.h>
 #include <termios.h>
 #include <unistd.h>
 
-#include <stdio.h>
-
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 
 static int lcd_open(struct lcd_t *lcd, const bool reopen) {
@@ -42,6 +41,16 @@ static void lcd_write(struct lcd_t *lcd, const uint8_t *cmdbuf, const uint16_t l
 	}
 }
 
+void lcd_reinit(struct lcd_t *lcd) {
+    constexpr uint8_t cmdbuf[] = {0xFE, 63};
+    lcd_write(lcd, cmdbuf, sizeof(cmdbuf));
+}
+
+void lcd_splash(struct lcd_t *lcd) {
+    constexpr uint8_t cmdbuf[] = {0xFE, 65};
+    lcd_write(lcd, cmdbuf, sizeof(cmdbuf));
+}
+
 void lcd_clear(struct lcd_t *lcd) {
 	constexpr uint8_t cmdbuf[] = {0xFE, 88};
 	lcd_write(lcd, cmdbuf, sizeof(cmdbuf));
@@ -140,9 +149,6 @@ int lcd_init(struct lcd_t *lcd) {
 	}
 
 	lcd_clear_buf(lcd);
-	constexpr uint8_t cmdbuf[] = {0xFE, 75, 0xFE, 84};
-	lcd_write(lcd, cmdbuf, sizeof(cmdbuf));
-
-	lcd_clear(lcd);
+	lcd_reinit(lcd);
 	return 0;
 }

src/main.c

@@ -175,8 +175,7 @@ static void *display_thread(void *arg) {
 		lcd_clear_buf(&lcd);
 	}
 
-	lcd_write_buf(&lcd, 2, 16, "Goodbye"); // center
-	lcd_flush_buf(&lcd);
+	lcd_splash(&lcd);
 	lcd_close(&lcd);
 	applog(LOG_WRN, "display thread stopped");
 	return nullptr;