From fca7cc1747642d077898e301945df86bfdea0784 Mon Sep 17 00:00:00 2001
From: Barabas <barabas.raffai@gmail.com>
Date: Sat, 8 May 2021 11:27:13 +0100
Subject: Added OLED fade out support (#12086)

---
 drivers/oled/oled_driver.c | 21 +++++++++++++++++++--
 drivers/oled/oled_driver.h |  8 ++++++++
 2 files changed, 27 insertions(+), 2 deletions(-)

(limited to 'drivers/oled')

diff --git a/drivers/oled/oled_driver.c b/drivers/oled/oled_driver.c
index 6c1238cd6f..082115d534 100644
--- a/drivers/oled/oled_driver.c
+++ b/drivers/oled/oled_driver.c
@@ -73,6 +73,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PRE_CHARGE_PERIOD 0xD9
 #define VCOM_DETECT 0xDB
 
+// Advance Graphic Commands
+#define FADE_BLINK 0x23
+#define ENABLE_FADE 0x20
+#define ENABLE_BLINK 0x30
+
 // Charge Pump Commands
 #define CHARGE_PUMP 0x8D
 
@@ -547,7 +552,13 @@ bool oled_on(void) {
     oled_timeout = timer_read32() + OLED_TIMEOUT;
 #endif
 
-    static const uint8_t PROGMEM display_on[] = {I2C_CMD, DISPLAY_ON};
+    static const uint8_t PROGMEM display_on[] =
+#ifdef OLED_FADE_OUT
+        {I2C_CMD, FADE_BLINK, 0x00};
+#else
+        {I2C_CMD, DISPLAY_ON};
+#endif
+
     if (!oled_active) {
         if (I2C_TRANSMIT_P(display_on) != I2C_STATUS_SUCCESS) {
             print("oled_on cmd failed\n");
@@ -563,7 +574,13 @@ bool oled_off(void) {
         return !oled_active;
     }
 
-    static const uint8_t PROGMEM display_off[] = {I2C_CMD, DISPLAY_OFF};
+    static const uint8_t PROGMEM display_off[] =
+#ifdef OLED_FADE_OUT
+        {I2C_CMD, FADE_BLINK, ENABLE_FADE | OLED_FADE_OUT_INTERVAL};
+#else
+        {I2C_CMD, DISPLAY_OFF};
+#endif
+
     if (oled_active) {
         if (I2C_TRANSMIT_P(display_off) != I2C_STATUS_SUCCESS) {
             print("oled_off cmd failed\n");
diff --git a/drivers/oled/oled_driver.h b/drivers/oled/oled_driver.h
index 00896f01c2..cbf5380ee0 100644
--- a/drivers/oled/oled_driver.h
+++ b/drivers/oled/oled_driver.h
@@ -154,6 +154,14 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #    endif
 #endif
 
+#if !defined(OLED_FADE_OUT_INTERVAL)
+#    define OLED_FADE_OUT_INTERVAL 0x00
+#endif
+
+#if OLED_FADE_OUT_INTERVAL > 0x0F || OLED_FADE_OUT_INTERVAL < 0x00
+#    error OLED_FADE_OUT_INTERVAL must be between 0x00 and 0x0F
+#endif
+
 #if !defined(OLED_I2C_TIMEOUT)
 #    define OLED_I2C_TIMEOUT 100
 #endif
-- 
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