From 528fc5661679feeef91e76d633c94c945bb0a3df Mon Sep 17 00:00:00 2001
From: JF <jf@codingfield.com>
Date: Sat, 7 Dec 2019 19:15:33 +0100
Subject: The font is now fixed width. HUGE performance improvement of the
 display driver.

---
 src/DisplayApp/DisplayApp.cpp | 56 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 50 insertions(+), 6 deletions(-)

(limited to 'src/DisplayApp/DisplayApp.cpp')

diff --git a/src/DisplayApp/DisplayApp.cpp b/src/DisplayApp/DisplayApp.cpp
index 6dc31bc0..abaef825 100644
--- a/src/DisplayApp/DisplayApp.cpp
+++ b/src/DisplayApp/DisplayApp.cpp
@@ -4,6 +4,7 @@
 #include <libraries/log/nrf_log.h>
 #include <boards.h>
 #include <nrf_font.h>
+#include <hal/nrf_rtc.h>
 #include "Components/Gfx/Gfx.h"
 
 using namespace Pinetime::Applications;
@@ -21,6 +22,9 @@ void DisplayApp::Process(void *instance) {
 
   while (1) {
     NRF_LOG_INFO("BlinkApp task running!");
+
+    app->Refresh();
+
     vTaskDelay(1000);
   }
 }
@@ -48,17 +52,57 @@ void DisplayApp::InitHw() {
   gfx->ClearScreen();
 
   uint8_t x = 7;
-  gfx->DrawChar(&largeFont , '0', &x, 78, 0x0);
+  gfx->DrawChar(&largeFont , '0', &x, 78, 0xffff);
 
   x = 61;
-  gfx->DrawChar(&largeFont, '1', &x, 78, 0x0);
+  gfx->DrawChar(&largeFont, '0', &x, 78, 0xffff);
+
+  x = 94;
+  gfx->DrawChar(&largeFont, ':', &x, 78, 0xffff);
+
+  x = 127;
+  gfx->DrawChar(&largeFont, '0', &x, 78, 0xffff);
+
+  x = 181;
+  gfx->DrawChar(&largeFont, '0', &x, 78, 0xffff);
+}
+
+void DisplayApp::Refresh() {
+  uint32_t systick_counter = nrf_rtc_counter_get(portNRF_RTC_REG);
+  auto raw = systick_counter / 1000;
+
+  // TODO make this better!
+  minutes = raw / 60;
+  seconds = raw - (minutes*60);
 
-  x = 115;
-  gfx->DrawChar(&largeFont, ':', &x, 78, 0x0);
+  char secondChar[3];
+  sprintf(secondChar, "%02d", seconds);
+
+  char minutesChar[3];
+  sprintf(minutesChar, "%02d", minutes);
+
+  uint8_t x = 7;
+  if(minutesChar[0] != currentChar[0]) {
+    gfx->DrawChar(&largeFont, minutesChar[0], &x, 78, 0xffff);
+    currentChar[0] = minutesChar[0];
+  }
+
+  x = 61;
+  if(minutesChar[1] != currentChar[1]) {
+    gfx->DrawChar(&largeFont, minutesChar[1], &x, 78, 0xffff);
+    currentChar[1] = minutesChar[1];
+  }
 
   x = 127;
-  gfx->DrawChar(&largeFont, '2', &x, 78, 0x0);
+  if(secondChar[0] != currentChar[2]) {
+    gfx->DrawChar(&largeFont, secondChar[0], &x, 78, 0xffff);
+    currentChar[2] = secondChar[0];
+  }
 
   x = 181;
-  gfx->DrawChar(&largeFont, '3', &x, 78, 0x0);
+  if(secondChar[1] != currentChar[3]) {
+    gfx->DrawChar(&largeFont, secondChar[1], &x, 78, 0xffff);
+    currentChar[3] = secondChar[1];
+  }
+
 }
-- 
cgit v1.2.3-70-g09d2