Components
Lib for the LCD Display with ILI9341 controller
Dependents: SeeedStudioTFTv2 SeeedStudioTFTv2 SeeedStudioTFTv2 SeeedStudioTFTv21 ... more
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SPI_TFT_ILI9341
by 
Michael Ammann
Revision 1:6d6125e88de7, committed 2013-06-13
- Comitter:
- dreschpe
- Date:
- Thu Jun 13 19:54:24 2013 +0000
- Parent:
- 0:da1bf437cbc1
- Child:
- 2:0a16083193a4
- Commit message:
- Init sequence changed based on MI0283QT datasheet
Changed in this revision
| SPI_TFT_ILI9341.cpp | Show annotated file Show diff for this revision Revisions of this file |
| SPI_TFT_ILI9341.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/SPI_TFT_ILI9341.cpp Wed Jun 12 22:54:38 2013 +0000
+++ b/SPI_TFT_ILI9341.cpp Thu Jun 13 19:54:24 2013 +0000
@@ -98,66 +98,165 @@
+// Init code based on MI0283QT datasheet
+
void SPI_TFT_ILI9341::tft_reset()
{
- //static unsigned short driverCode;
_spi.format(8,3); // 8 bit spi mode 3
- _spi.frequency(12000000); // 12 Mhz SPI clock
+ _spi.frequency(10000000); // 10 Mhz SPI clock
_cs = 1; // cs high
_dc = 1; // dc high
_reset = 0; // display reset
wait_us(50);
- _reset = 1; // end reset
+ _reset = 1; // end hardware reset
wait_ms(5);
+
+ wr_cmd(0x01); // SW reset
+ wait_ms(5);
+ wr_cmd(0x28); // display off
/* Start Initial Sequence ----------------------------------------------------*/
- wr_cmd(0xCD); // Power Control A
+ wr_cmd(0xCF);
+ _spi.write(0x00);
+ _spi.write(0x83);
+ _spi.write(0x30);
+ _cs = 1;
+
+ wr_cmd(0xED);
+ _spi.write(0x64);
+ _spi.write(0x03);
+ _spi.write(0x12);
+ _spi.write(0x81);
+ _cs = 1;
+
+ wr_cmd(0xE8);
+ _spi.write(0x85);
+ _spi.write(0x01);
+ _spi.write(0x79);
+ _cs = 1;
+
+ wr_cmd(0xCB);
_spi.write(0x39);
_spi.write(0x2C);
_spi.write(0x00);
_spi.write(0x34);
_spi.write(0x02);
_cs = 1;
-
- wr_cmd(0xCF); // Power Control B
- _spi.write(0x00);
- _spi.write(0xAA);
- _spi.write(0xB0);
+
+ wr_cmd(0xF7);
+ _spi.write(0x20);
_cs = 1;
- wr_cmd(0xF7); // CMD_PUMP_RATIO_CONTROL
- _spi.write(0x30);
+
+ wr_cmd(0xEA);
+ _spi.write(0x00);
+ _spi.write(0x00);
_cs = 1;
+
wr_cmd(0xC0); // POWER_CONTROL_1
- _spi.write(0x25);
+ _spi.write(0x26);
_cs = 1;
+
wr_cmd(0xC1); // POWER_CONTROL_2
_spi.write(0x11);
_cs = 1;
+
wr_cmd(0xC5); // VCOM_CONTROL_1
- _spi.write(0x5C);
- _spi.write(0x4C);
+ _spi.write(0x35);
+ _spi.write(0x3E);
_cs = 1;
+
wr_cmd(0xC7); // VCOM_CONTROL_2
- _spi.write(0x94);
- _cs = 1;
- wr_cmd(0xE8); // DRIVER_TIMING_CONTROL_A
- _spi.write(0x85);
- _spi.write(0x01);
- _spi.write(0x78);
+ _spi.write(0xBE);
_cs = 1;
- wr_cmd(0xEA); // DRIVER_TIMING_CONTROL_B
- _spi.write(0x00);
- _spi.write(0x00);
- _cs = 1;
- wr_cmd(0x3A); // COLMOD_PIXEL_FORMAT_SET
- _spi.write(0x05);
- _cs = 1;
+
wr_cmd(0x36); // MEMORY_ACCESS_CONTROL
_spi.write(0x48);
_cs = 1;
- WindowMax ();
-}
+
+ wr_cmd(0x3A); // COLMOD_PIXEL_FORMAT_SET
+ _spi.write(0x55); // 16 bit pixel
+ _cs = 1;
+
+ wr_cmd(0xB1); // Frame Rate
+ _spi.write(0x00);
+ _spi.write(0x1B);
+ _cs = 1;
+
+ wr_cmd(0xF2); // Gamma Function Disable
+ _spi.write(0x08);
+ _cs = 1;
+
+ wr_cmd(0x26);
+ _spi.write(0x01); // gamma set for curve 01/2/04/08
+ _cs = 1;
+
+ wr_cmd(0xE0); // positive gamma correction
+ _spi.write(0x1F);
+ _spi.write(0x1A);
+ _spi.write(0x18);
+ _spi.write(0x0A);
+ _spi.write(0x0F);
+ _spi.write(0x06);
+ _spi.write(0x45);
+ _spi.write(0x87);
+ _spi.write(0x32);
+ _spi.write(0x0A);
+ _spi.write(0x07);
+ _spi.write(0x02);
+ _spi.write(0x07);
+ _spi.write(0x05);
+ _spi.write(0x00);
+ _cs = 1;
+
+ wr_cmd(0xE1); // negativ gamma correction
+ _spi.write(0x00);
+ _spi.write(0x25);
+ _spi.write(0x27);
+ _spi.write(0x05);
+ _spi.write(0x10);
+ _spi.write(0x09);
+ _spi.write(0x3A);
+ _spi.write(0x78);
+ _spi.write(0x4D);
+ _spi.write(0x05);
+ _spi.write(0x18);
+ _spi.write(0x0D);
+ _spi.write(0x38);
+ _spi.write(0x3A);
+ _spi.write(0x1F);
+ _cs = 1;
+
+ WindowMax ();
+
+ //wr_cmd(0x34); // tearing effect off
+ //_cs = 1;
+
+ //wr_cmd(0x35); // tearing effect on
+ //_cs = 1;
+
+ wr_cmd(0xB7); // entry mode
+ _spi.write(0x07);
+ _cs = 1;
+
+ wr_cmd(0xB6); // display function control
+ _spi.write(0x0A);
+ _spi.write(0x82);
+ _spi.write(0x27);
+ _spi.write(0x00);
+ _cs = 1;
+
+ wr_cmd(0x11); // sleep out
+ _cs = 1;
+
+ wait_ms(100);
+
+ wr_cmd(0x29); // display on
+ _cs = 1;
+
+ wait_ms(100);
+
+ }
void SPI_TFT_ILI9341::pixel(int x, int y, int color)
--- a/SPI_TFT_ILI9341.h Wed Jun 12 22:54:38 2013 +0000
+++ b/SPI_TFT_ILI9341.h Thu Jun 13 19:54:24 2013 +0000
@@ -58,7 +58,7 @@
*
*
* // the TFT is connected to SPI pin 5-7
- * SPI_TFT_ILI9341 TFT(p5, p6, p7, p8, p15,"TFT"); // mosi, miso, sclk, cs, reset
+ * SPI_TFT_ILI9341 TFT(p5, p6, p7, p8, p9, p10,"TFT"); // mosi, miso, sclk, cs, reset, dc
*
* int main() {
* TFT.claim(stdout); // send stdout to the TFT display
@@ -70,7 +70,6 @@
* TFT.set_font((unsigned char*) Arial12x12); // select the font
*
* TFT.set_orientation(0);
- * TFT.locate(0,0);
* printf(" Hello Mbed 0");
* TFT.set_font((unsigned char*) Arial24x23); // select font 2
* TFT.locate(48,115);
@@ -81,12 +80,15 @@
class SPI_TFT_ILI9341 : public GraphicsDisplay {
public:
- /** Create a SPI_TFT object connected to SPI and two pins
+ /** Create a SPI_TFT object connected to SPI and three pins
*
- * @param mosi,miso,sclk SPI
+ * @param mosi pin connected to SDO of display
+ * @param miso pin connected to SDI of display
+ * @param sclk pin connected to RS of display
* @param cs pin connected to CS of display
* @param reset pin connected to RESET of display
- *
+ * @param dc pin connected to WR of display
+ * the IM pins have to be set to 1110 (3-0)
*/
SPI_TFT_ILI9341(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset, PinName dc, const char* name ="TFT");