David Smart
Library to control a Graphics TFT connected to 4-wire SPI - revised for the Raio RA8875 Display Controller.
Dependents: FRDM_RA8875_mPaint RA8875_Demo RA8875_KeyPadDemo SignalGenerator ... more
Fork of
SPI_TFT
by 
Peter Drescher
See Components - RA8875 Based Display
Enhanced touch-screen support - where it previous supported both the Resistive Touch and Capacitive Touch based on the FT5206 Touch Controller, now it also has support for the GSL1680 Touch Controller.
Offline Help Manual (Windows chm)
/media/uploads/WiredHome/ra8875.zip.bin (download, rename to .zip and unzip)
Diff: RA8875.cpp
- Revision:
- 38:38d503b4fad6
- Parent:
- 37:f19b7e7449dc
- Child:
- 39:805cee56872d
--- a/RA8875.cpp Sat Jan 25 19:47:33 2014 +0000
+++ b/RA8875.cpp Sat Jan 25 21:18:03 2014 +0000
@@ -93,6 +93,24 @@
}
#endif
+RetCode_t RA8875::WriteCommandW(uint8_t command, uint16_t data)
+{
+ #if 1
+ WriteCommand(command, data & 0xFF);
+ WriteCommand(command+1, data >> 8);
+ #else
+ INFO("WriteCommandW(%02X, %04X)", command, data);
+ select(true);
+ spiwrite(0x80);
+ spiwrite(command);
+// spiwrite(0x00);
+ spiwrite(data & 0xFF);
+ spiwrite(data >> 8);
+ select(false);
+ #endif
+ return noerror;
+}
+
RetCode_t RA8875::WriteCommand(unsigned char command, unsigned int data)
{
select(true);
@@ -106,6 +124,16 @@
return noerror;
}
+RetCode_t RA8875::WriteDataW(uint16_t data)
+{
+ select(true);
+ spiwrite(0x00);
+ spiwrite(data & 0xFF);
+ spiwrite(data >> 8);
+ select(false);
+ return noerror;
+}
+
RetCode_t RA8875::WriteData(unsigned char data)
{
select(true);
@@ -174,12 +202,12 @@
return height() / fontheight();
}
-uint16_t RA8875::width(void)
+dim_t RA8875::width(void)
{
return (ReadCommand(0x14) + 1) * 8;
}
-uint16_t RA8875::height(void)
+dim_t RA8875::height(void)
{
return (ReadCommand(0x19) | (ReadCommand(0x1A) << 8)) + 1;
}
@@ -187,10 +215,8 @@
RetCode_t RA8875::SetTextCursor(loc_t x, loc_t y)
{
cursor_x = x; cursor_y = y; // for non-internal fonts
- WriteCommand(0x2A, x & 0xFF);
- WriteCommand(0x2B, x >> 8);
- WriteCommand(0x2C, y & 0xFF);
- WriteCommand(0x2D, y >> 8);
+ WriteCommandW(0x2A, x);
+ WriteCommandW(0x2C, y);
return noerror;
}
@@ -342,16 +368,14 @@
if (c == '\r') {
loc_t x;
x = ReadCommand(0x30) | (ReadCommand(0x31) << 8); // Left edge of active window
- WriteCommand(0x2A, x & 0xFF);
- WriteCommand(0x2B, x >> 8);
+ WriteCommandW(0x2A, x);
} else if (c == '\n') {
loc_t y;
y = ReadCommand(0x2C) | (ReadCommand(0x2D) << 8); // current y location
y += fontheight();
if (y > height()) // @TODO after bottom of active window, then scroll window?
y = 0;
- WriteCommand(0x2C, y & 0xFF);
- WriteCommand(0x2D, y >> 8);
+ WriteCommandW(0x2C, y);
} else {
WriteCommand(0x02); // RA8875 Internal Fonts
select(true);
@@ -378,8 +402,7 @@
RetCode_t RA8875::putp(color_t pixel)
{
- WriteData(pixel >> 8);
- WriteData(pixel & 0xFF);
+ WriteDataW((pixel>>8) | (pixel<<8));
return noerror;
}
@@ -422,24 +445,18 @@
RetCode_t RA8875::SetGraphicsCursor(loc_t x, loc_t y)
{
- WriteCommand(0x46, x & 0xFF);
- WriteCommand(0x47, x >> 8);
- WriteCommand(0x48, y & 0xFF);
- WriteCommand(0x49, y >> 8);
+ WriteCommandW(0x46, x);
+ WriteCommandW(0x48, y);
return noerror;
}
RetCode_t RA8875::window(loc_t x, loc_t y, dim_t width, dim_t height)
{
GraphicsDisplay::window(x,y, width,height);
- WriteCommand(0x30, x & 0xFF); // HSAW0
- WriteCommand(0x31, x >> 8); // HSAW1
- WriteCommand(0x32, y & 0xFF); // VSAW0
- WriteCommand(0x33, y >> 8); // VSAW1
- WriteCommand(0x34, (x+width-1) & 0xFF); // HEAW0
- WriteCommand(0x35, (x+width-1) >> 8); // HEAW1
- WriteCommand(0x36, (y+height-1) & 0xFF); // VEAW0
- WriteCommand(0x37, (y+height-1) >> 8); // VEAW1
+ WriteCommandW(0x30, x);
+ WriteCommandW(0x32, y);
+ WriteCommandW(0x34, (x+width-1));
+ WriteCommandW(0x36, (y+height-1));
SetGraphicsCursor(x,y);
return noerror;
}
@@ -478,9 +495,8 @@
color_t color = GetForeColor();
WriteCommand(0x40,0x00); // Graphics write mode
SetGraphicsCursor(x, y);
- WriteCommand(0x02); // start data write
- WriteData(color & 0xFF);
- WriteData(color >> 8);
+ WriteCommand(0x02);
+ WriteDataW(color);
ret = noerror;
REGISTERPERFORMANCE(PRF_DRAWPOINT);
return ret;
@@ -495,15 +511,10 @@
RetCode_t RA8875::line(loc_t x1, loc_t y1, loc_t x2, loc_t y2)
{
PERFORMANCE_RESET;
- WriteCommand(0x91, x1 & 0xFF);
- WriteCommand(0x92, x1 >> 8);
- WriteCommand(0x93, y1 & 0xFF);
- WriteCommand(0x94, y1 >> 8);
- WriteCommand(0x95, x2 & 0xFF);
- WriteCommand(0x96, x2 >> 8);
- WriteCommand(0x97, y2 & 0xFF);
- WriteCommand(0x98, y2 >> 8);
-
+ WriteCommandW(0x91, x1);
+ WriteCommandW(0x93, y1);
+ WriteCommandW(0x95, x2);
+ WriteCommandW(0x97, y2);
unsigned char drawCmd = 0x00; // Line
WriteCommand(0x90, drawCmd);
WriteCommand(0x90, 0x80 + drawCmd); // Start drawing.
@@ -537,15 +548,10 @@
} else if (y1 == y2) {
line(x1, y1, x2, y2);
} else {
- WriteCommand(0x91, x1 & 0xFF);
- WriteCommand(0x92, x1 >> 8);
- WriteCommand(0x93, y1 & 0xFF);
- WriteCommand(0x94, y1 >> 8);
- WriteCommand(0x95, x2 & 0xFF);
- WriteCommand(0x96, x2 >> 8);
- WriteCommand(0x97, y2 & 0xFF);
- WriteCommand(0x98, y2 >> 8);
-
+ WriteCommandW(0x91, x1);
+ WriteCommandW(0x93, y1);
+ WriteCommandW(0x95, x2);
+ WriteCommandW(0x97, y2);
unsigned char drawCmd = 0x10; // Rectangle
if (fillit == FILL)
drawCmd |= 0x20;
@@ -587,26 +593,15 @@
} else if (y1 == y2) {
line(x1, y1, x2, y2);
} else {
- WriteCommand(0x91, x1 & 0xFF);
- WriteCommand(0x92, x1 >> 8);
- WriteCommand(0x93, y1 & 0xFF);
- WriteCommand(0x94, y1 >> 8);
- WriteCommand(0x95, x2 & 0xFF);
- WriteCommand(0x96, x2 >> 8);
- WriteCommand(0x97, y2 & 0xFF);
- WriteCommand(0x98, y2 >> 8);
-
- WriteCommand(0xA1, radius1 & 0xFF);
- WriteCommand(0xA2, radius1 >> 8);
- WriteCommand(0xA3, radius2 & 0xFF);
- WriteCommand(0xA4, radius2 >> 8);
-
+ WriteCommandW(0x91, x1);
+ WriteCommandW(0x93, y1);
+ WriteCommandW(0x95, x2);
+ WriteCommandW(0x97, y2);
+ WriteCommandW(0xA1, radius1);
+ WriteCommandW(0xA3, radius2);
// Should not need this...
- WriteCommand(0xA5, 0 & 0xFF);
- WriteCommand(0xA6, 0 >> 8);
- WriteCommand(0xA7, 0 & 0xFF);
- WriteCommand(0xA8, 0 >> 8);
-
+ WriteCommandW(0xA5, 0);
+ WriteCommandW(0xA7, 0);
unsigned char drawCmd = 0x20; // Rounded Rectangle
if (fillit == FILL)
drawCmd |= 0x40;
@@ -649,21 +644,12 @@
if (x1 == x2 && y1 == y2 && x1 == x3 && y1 == y3) {
pixel(x1, y1);
} else {
- WriteCommand(0x91, x1 & 0xFF);
- WriteCommand(0x92, x1 >> 8);
- WriteCommand(0x93, y1 & 0xFF);
- WriteCommand(0x94, y1 >> 8);
-
- WriteCommand(0x95, x2 & 0xFF);
- WriteCommand(0x96, x2 >> 8);
- WriteCommand(0x97, y2 & 0xFF);
- WriteCommand(0x98, y2 >> 8);
-
- WriteCommand(0xA9, x3 & 0xFF);
- WriteCommand(0xAA, x3 >> 8);
- WriteCommand(0xAB, y3 & 0xFF);
- WriteCommand(0xAC, y3 >> 8);
-
+ WriteCommandW(0x91, x1);
+ WriteCommandW(0x93, y1);
+ WriteCommandW(0x95, x2);
+ WriteCommandW(0x97, y2);
+ WriteCommandW(0xA9, x3);
+ WriteCommandW(0xAB, y3);
unsigned char drawCmd = 0x01; // Triangle
if (fillit == FILL)
drawCmd |= 0x20;
@@ -700,12 +686,9 @@
} else if (radius == 1) {
pixel(x,y);
} else {
- WriteCommand(0x99, x & 0xFF);
- WriteCommand(0x9a, x >> 8);
- WriteCommand(0x9b, y & 0xFF);
- WriteCommand(0x9c, y >> 8);
+ WriteCommandW(0x99, x);
+ WriteCommandW(0x9B, y);
WriteCommand(0x9d, radius & 0xFF);
-
unsigned char drawCmd = 0x00; // Circle
if (fillit == FILL)
drawCmd |= 0x20;
@@ -740,15 +723,10 @@
} else if (radius1 == 1 && radius2 == 1) {
pixel(x, y);
} else {
- WriteCommand(0xA5, x & 0xFF);
- WriteCommand(0xA6, x >> 8);
- WriteCommand(0xA7, y & 0xFF);
- WriteCommand(0xA8, y >> 8);
- WriteCommand(0xA1, radius1 & 0xFF);
- WriteCommand(0xA2, radius1 >> 8);
- WriteCommand(0xA3, radius2 & 0xFF);
- WriteCommand(0xA4, radius2 >> 8);
-
+ WriteCommandW(0xA5, x);
+ WriteCommandW(0xA7, y);
+ WriteCommandW(0xA1, radius1);
+ WriteCommandW(0xA3, radius2);
unsigned char drawCmd = 0x00; // Ellipse
if (fillit == FILL)
drawCmd |= 0x40;
@@ -1048,7 +1026,7 @@
display.cls();
wait_ms(200);
display.puts(0,0, "RA8875 Backlight Test - Ramp up.");
- for (int i=0; i < 255; i++) {
+ for (int i=0; i <= 255; i++) {
unsigned int w = (ramptime * 1000)/ 256;
sprintf(buf, "%3d, %4d", i, w);
display.puts(100,100,buf);
RA8875: 4" to 8" (WQVGA, WVGA, Multi-Touch, Keypad)