A library with drivers for different peripherals on the LPC4088 QuickStart Board or related add-on boards.
Dependencies: FATFileSystem
Fork of EALib by
Diff: LcdController.h
- Revision:
- 0:0fdadbc3d852
- Child:
- 12:15597e45eea0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LcdController.h Thu Sep 26 06:37:02 2013 +0000 @@ -0,0 +1,215 @@ + +#ifndef LCDCONTROLLER_H +#define LCDCONTROLLER_H + +/** + * A LCD controller interface + * + * @code + * #include "mbed.h" + * #include "LcdController.h" + * + * LcdController::Config innolux( + * 45, + * 17, + * 2, + * 800, + * 22, + * 22, + * 2, + * 480, + * false, + * false, + * true, + * true, + * true, + * LcdController::Bpp_16_565, + * 36000000, + * LcdController::Tft, + * false); + * + * int main(void) { + * LcdController lcd; + * + * lcd.open(&innolux); + * lcd.setFrameBuffer(frameBuffer); + * lcd.setPower(true); + * + * // draw on the frame buffer + * ... + * } + * @endcode + */ +class LcdController { +public: + + enum LcdPanel { + Tft = 0, // standard TFT + AdTft, // advanced TFT + HrTft, // highly reflective TFT + Mono_4Bit, // 4-bit mono + Mono_8Bit, // 8-bit mono + ColorStn // Color STN + }; + + enum BitsPerPixel { + Bpp_1 = 0, + Bpp_2, + Bpp_4, + Bpp_8, + Bpp_16, + Bpp_24, + Bpp_16_565, + Bpp_12_444 + }; + + /** + * LCD configuration + */ + class Config { + public: + + /** Create an empty LCD configuration object + * + */ + Config() { + } + + /** Create a LCD configuration object with specified values + * + * @param horizontalBackPorch Horizontal back porch in clocks + * @param horizontalFrontPorch Horizontal front porch in clocks + * @param hsync HSYNC pulse width in clocks + * @param width width of display in pixels + * @param verticalBackPorch vertical back porch in clocks + * @param verticalFrontPorch vertical front porch in clocks + * @param vsync VSYNC pulse width in clocks + * @param height height of display in pixels + * @param invertOutputEnable true to invert output enable + * @param invertPanelClock true to invert panel clock + * @param invertHsync true to invert HSYNC + * @param invertVsync true to invert VSYNC + * @param acBias AC bias frequency in clocks + * @param bpp bits per pixel + * @param optimalClock optimal clock rate (Hz) + * @param panelType LCD panel type + * @param dualPanel true if it is a dual panel display + */ + Config(int horizontalBackPorch, + int horizontalFrontPorch, + int hsync, + int width, + int verticalBackPorch, + int verticalFrontPorch, + int vsync, + int height, + bool invertOutputEnable, + bool invertPanelClock, + bool invertHsync, + bool invertVsync, + int acBias, + BitsPerPixel bpp, + int optimalClock, + LcdPanel panelType, + bool dualPanel) { + + this->horizontalBackPorch = horizontalBackPorch; + this->horizontalFrontPorch = horizontalFrontPorch; + this->hsync = hsync; + this->width = width; + this->verticalBackPorch = verticalBackPorch; + this->verticalFrontPorch = verticalFrontPorch; + this->vsync = vsync; + this->height = height; + this->invertOutputEnable = invertOutputEnable; + this->invertPanelClock = invertPanelClock; + this->invertHsync = invertHsync; + this->invertVsync = invertVsync; + this->acBias = acBias; + this->bpp = bpp; + this->optimalClock = optimalClock; + this->panelType = panelType; + this->dualPanel = dualPanel; + } + + int horizontalBackPorch; + int horizontalFrontPorch; + int hsync; + int width; + int verticalBackPorch; + int verticalFrontPorch; + int vsync; + int height; + bool invertOutputEnable; + bool invertPanelClock; + bool invertHsync; + bool invertVsync; + int acBias; + BitsPerPixel bpp; + int optimalClock; + LcdPanel panelType; + bool dualPanel; + }; + + /** Create a LCD controller interface + * + */ + LcdController(); + + /** Open and initialize the LCD controller with the given LCD configuration + * + * @param cfg LCD configuration + * + * @returns + * 0 on success + * 1 on failure + */ + int open(LcdController::Config* cfg); + + /** Close the LCD controller + * + * @returns + * 0 on success + * 1 on failure + */ + int close(); + + /** Set and activate the address of the frame buffer to use. + * + * It is the content of the frame buffer that is shown on the + * display. All the drawing on the frame buffer can be done + * 'offline' and whenever it should be shown this function + * can be called with the address of the offline frame buffer. + * + * @param address Memory address of the frame buffer + * + * @returns + * 0 on success + * 1 on failure + */ + int setFrameBuffer(uint32_t address); + + /** Turn on/off the power to the display. + * + * @param on true to turn on, false to turn off + * + * @returns + * 0 on success + * 1 on failure + */ + int setPower(bool on); + + +private: + + bool _opened; + static bool _lcdControllerUsed; + + void init(LcdController::Config* cfg); + void pinConfig(); + uint32_t getClockDivisor(int clock); +}; + +#endif + +