From 17340c239674f5381da873c06bc8f91ff43b60be Mon Sep 17 00:00:00 2001
From: Saleem Rashid <trezor@saleemrashid.com>
Date: Sat, 16 Dec 2017 20:39:43 +0000
Subject: [PATCH] emulator: Show DEBUG_LINK indicator

---
 emulator/oled.c |  6 ++++++
 oled.c          | 27 +++++++++++++--------------
 oled.h          |  2 ++
 3 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/emulator/oled.c b/emulator/oled.c
index 242408a..8f58759 100644
--- a/emulator/oled.c
+++ b/emulator/oled.c
@@ -58,6 +58,9 @@ void oledInit(void) {
 }
 
 void oledRefresh(void) {
+	/* Draw triangle in upper right corner */
+	oledInvertDebugLink();
+
 	const uint8_t *buffer = oledGetBuffer();
 
 	static uint32_t data[OLED_HEIGHT][OLED_WIDTH];
@@ -75,6 +78,9 @@ void oledRefresh(void) {
 	SDL_UpdateTexture(texture, NULL, data, OLED_WIDTH * sizeof(uint32_t));
 	SDL_RenderCopy(renderer, texture, NULL, NULL);
 	SDL_RenderPresent(renderer);
+
+	/* Return it back */
+	oledInvertDebugLink();
 }
 
 void emulatorPoll(void) {
diff --git a/oled.c b/oled.c
index 7b1d5fc..569b448 100644
--- a/oled.c
+++ b/oled.c
@@ -180,6 +180,17 @@ void oledClear()
 	memset(_oledbuffer, 0, sizeof(_oledbuffer));
 }
 
+void oledInvertDebugLink()
+{
+	if (is_debug_link) {
+		oledInvertPixel(OLED_WIDTH - 5, 0); oledInvertPixel(OLED_WIDTH - 4, 0); oledInvertPixel(OLED_WIDTH - 3, 0); oledInvertPixel(OLED_WIDTH - 2, 0); oledInvertPixel(OLED_WIDTH - 1, 0);
+		oledInvertPixel(OLED_WIDTH - 4, 1); oledInvertPixel(OLED_WIDTH - 3, 1); oledInvertPixel(OLED_WIDTH - 2, 1); oledInvertPixel(OLED_WIDTH - 1, 1); 
+		oledInvertPixel(OLED_WIDTH - 3, 2); oledInvertPixel(OLED_WIDTH - 2, 2); oledInvertPixel(OLED_WIDTH - 1, 2);
+		oledInvertPixel(OLED_WIDTH - 2, 3); oledInvertPixel(OLED_WIDTH - 1, 3);
+		oledInvertPixel(OLED_WIDTH - 1, 4);
+	}
+}
+
 /*
  * Refresh the display. This copies the buffer to the display to show the
  * contents.  This must be called after every operation to the buffer to
@@ -192,13 +203,7 @@ void oledRefresh()
 	static const uint8_t s[3] = {OLED_SETLOWCOLUMN | 0x00, OLED_SETHIGHCOLUMN | 0x00, OLED_SETSTARTLINE | 0x00};
 
 	// draw triangle in upper right corner
-	if (is_debug_link) {
-		oledInvertPixel(OLED_WIDTH - 5, 0); oledInvertPixel(OLED_WIDTH - 4, 0); oledInvertPixel(OLED_WIDTH - 3, 0); oledInvertPixel(OLED_WIDTH - 2, 0); oledInvertPixel(OLED_WIDTH - 1, 0);
-		oledInvertPixel(OLED_WIDTH - 4, 1); oledInvertPixel(OLED_WIDTH - 3, 1); oledInvertPixel(OLED_WIDTH - 2, 1); oledInvertPixel(OLED_WIDTH - 1, 1); 
-		oledInvertPixel(OLED_WIDTH - 3, 2); oledInvertPixel(OLED_WIDTH - 2, 2); oledInvertPixel(OLED_WIDTH - 1, 2);
-		oledInvertPixel(OLED_WIDTH - 2, 3); oledInvertPixel(OLED_WIDTH - 1, 3);
-		oledInvertPixel(OLED_WIDTH - 1, 4);
-	}
+	oledInvertDebugLink();
 
 	gpio_clear(OLED_CS_PORT, OLED_CS_PIN);		// SPI select
 	SPISend(SPI_BASE, s, 3);
@@ -211,13 +216,7 @@ void oledRefresh()
 	gpio_clear(OLED_DC_PORT, OLED_DC_PIN);		// set to CMD
 
 	// return it back
-	if (is_debug_link) {
-		oledInvertPixel(OLED_WIDTH - 5, 0); oledInvertPixel(OLED_WIDTH - 4, 0); oledInvertPixel(OLED_WIDTH - 3, 0); oledInvertPixel(OLED_WIDTH - 2, 0); oledInvertPixel(OLED_WIDTH - 1, 0);
-		oledInvertPixel(OLED_WIDTH - 4, 1); oledInvertPixel(OLED_WIDTH - 3, 1); oledInvertPixel(OLED_WIDTH - 2, 1); oledInvertPixel(OLED_WIDTH - 1, 1); 
-		oledInvertPixel(OLED_WIDTH - 3, 2); oledInvertPixel(OLED_WIDTH - 2, 2); oledInvertPixel(OLED_WIDTH - 1, 2);
-		oledInvertPixel(OLED_WIDTH - 2, 3); oledInvertPixel(OLED_WIDTH - 1, 3);
-		oledInvertPixel(OLED_WIDTH - 1, 4);
-	}
+	oledInvertDebugLink();
 }
 #endif
 
diff --git a/oled.h b/oled.h
index 9c5531a..845e1e2 100644
--- a/oled.h
+++ b/oled.h
@@ -35,6 +35,8 @@ void oledClear(void);
 void oledRefresh(void);
 
 void oledSetDebugLink(bool set);
+void oledInvertDebugLink(void);
+
 void oledSetBuffer(uint8_t *buf);
 const uint8_t *oledGetBuffer(void);
 void oledDrawPixel(int x, int y);