From e674fd1b42b740b0816acb816e436e70ff0e3295 Mon Sep 17 00:00:00 2001
From: KTOWN <contact@microbuilder.eu>
Date: Mon, 14 Oct 2013 21:27:17 +0200
Subject: [PATCH] Set cursor position for text

---
 Adafruit_RA8875.cpp            | 21 +++++++++++++++++++++
 Adafruit_RA8875.h              |  1 +
 examples/textmode/textmode.ino | 18 +++++++++++++++++-
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/Adafruit_RA8875.cpp b/Adafruit_RA8875.cpp
index 8126912..140419b 100644
--- a/Adafruit_RA8875.cpp
+++ b/Adafruit_RA8875.cpp
@@ -234,6 +234,27 @@ void Adafruit_RA8875::textMode(void)
   writeData(temp);
 }
 
+/**************************************************************************/
+/*!
+      Sets the display in text mode (as opposed to graphics mode)
+      
+      @args x[in] The x position of the cursor (in pixels, 0..1023)
+      @args y[in] The y position of the cursor (in pixels, 0..511)
+*/
+/**************************************************************************/
+void Adafruit_RA8875::textSetCursor(uint16_t x, uint16_t y) 
+{
+  /* Set cursor location */
+  writeCommand(0x2A);
+  writeData(x & 0xFF);
+  writeCommand(0x2B);
+  writeData(x >> 8);
+  writeCommand(0x2C);
+  writeData(y & 0xFF);
+  writeCommand(0x2D);
+  writeData(y >> 8);
+}
+
 /**************************************************************************/
 /*!
       Sets the fore and background color when rendering text
diff --git a/Adafruit_RA8875.h b/Adafruit_RA8875.h
index acf4d27..45d87f7 100644
--- a/Adafruit_RA8875.h
+++ b/Adafruit_RA8875.h
@@ -62,6 +62,7 @@ class Adafruit_RA8875 : public Adafruit_GFX {
 
   /* Text functions */
   void    textMode(void);
+  void    textSetCursor(uint16_t x, uint16_t y);
   void    textColor(uint16_t foreColor, uint16_t bgColor);
   void    textTransparent(uint16_t foreColor);
   void    textEnlarge(uint8_t scale);
diff --git a/examples/textmode/textmode.ino b/examples/textmode/textmode.ino
index acf1cc0..3fcc572 100644
--- a/examples/textmode/textmode.ino
+++ b/examples/textmode/textmode.ino
@@ -25,11 +25,22 @@ void setup()
   tft.PWM1config(true, RA8875_PWM_CLK_DIV1024); // PWM output for backlight
   tft.PWM1out(255);
   tft.fillScreen(RA8875_BLACK);
-  
+
+  /* Switch to text mode */  
   tft.textMode();
+  
+  /* If necessary, enlarge the font */
   // tft.textEnlarge(0);
+  
+  /* Set a solid for + bg color ... */
   // tft.textColor(RA8875_WHITE, RA8875_RED);
+  /* ... or a fore color plus a transparent background */
   tft.textTransparent(RA8875_WHITE);
+  
+  /* Set the cursor location (in pixels) */
+  tft.textSetCursor(10, 10);
+  
+  /* Render some text! */
   uint8_t string[15] = "Hello, World! ";
   tft.textWrite(string, 15);
   tft.textWrite(string, 15);
@@ -37,6 +48,11 @@ void setup()
   tft.textWrite(string, 15);
   tft.textWrite(string, 15);
   tft.textWrite(string, 15);
+
+  /* Change the cursor location and color ... */  
+  tft.textSetCursor(100, 100);
+  tft.textTransparent(RA8875_RED);
+  /* ... and render some more text! */
   tft.textWrite(string, 15);
   tft.textWrite(string, 15);
 }