Toyomasa Watarai / SPI_TFT

Library to control a QVGA TFT connected to SPI. You can use printf to print text The lib can handle different fonts, draw lines, circles, rect and bmp

Fork of SPI_TFT by Peter Drescher

Diff: SPI_TFT.cpp

Revision:
19:33b5a7d74e66
Parent:
18:52cbeede86f0
--- a/SPI_TFT.cpp	Tue Oct 22 20:17:29 2013 +0000
+++ b/SPI_TFT.cpp	Tue Feb 21 13:49:57 2017 +0000
@@ -175,8 +175,14 @@
 // write to a TFT register
 void SPI_TFT::wr_reg (unsigned char reg, unsigned char val)
 {
-    wr_cmd(reg);
-    wr_dat(val);
+    //wr_cmd(reg);
+    //wr_dat(val);
+    _cs = 0;
+    _spi.write(0x7000 | reg);
+    _cs = 1;
+    _cs = 0;
+    _spi.write(0x7200 | val);
+    _cs = 1;    
 }
 
 // read from a TFT register
@@ -194,7 +200,8 @@
 #else                              // 16 Bit SPI  
     _spi.format(16,3);                 // 16 bit spi mode 3
 #endif
-    _spi.frequency(48000000);          // 48 Mhz SPI clock
+    //_spi.frequency(48000000);          // 48 Mhz SPI clock
+    _spi.frequency(25000000);
     _cs = 1;                           // cs high
     _reset = 0;                        // display reset
 
@@ -360,7 +367,7 @@
 // clear screen
 void SPI_TFT::cls (void)
 {
-    fprintf(stderr, "CLS \n\r");
+//    fprintf(stderr, "CLS \n\r");
     int pixel = ( width() * height());
     #if defined USE_DMA
         int dma_count;