Basically i glued Peter Drescher and Simon Ford libs in a GraphicsDisplay class, then derived TFT or LCD class (which inherits Protocols class), then the most derived ones (Inits), which are per-display and are the only part needed to be adapted to diff hw.
Dependents: testUniGraphic_150217 maze_TFT_MMA8451Q TFT_test_frdm-kl25z TFT_test_NUCLEO-F411RE ... more
Revision 33:f87f06292637, committed 2017-02-06
- Comitter:
- dreschpe
- Date:
- Mon Feb 06 12:29:33 2017 +0000
- Parent:
- 32:9cd6227dc7a6
- Child:
- 34:c66986d80f72
- Commit message:
- Add I2C protocol. ; Add SSD1306 i2C modus
Changed in this revision
--- a/Display/LCD.cpp Mon May 02 22:44:05 2016 +0000 +++ b/Display/LCD.cpp Mon Feb 06 12:29:33 2017 +0000 @@ -95,6 +95,24 @@ // locate(0,0); } +LCD::LCD(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name) + : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y), _LCDPAGES(lcdsize_y>>3), _IC_X_SEGS(ic_x_segs), _IC_Y_COMS(ic_y_coms), _IC_PAGES(ic_y_coms>>3) +{ + if(displayproto==I2C_){ + proto = new I2C_bus(Hz,address,sda,scl); + useNOP=false; + } + buffer = (unsigned char*) malloc (screensize_X*_LCDPAGES); + buffer16 = (unsigned short*)buffer; + draw_mode = NORMAL; + // cls(); + set_orientation(1); + foreground(White); + background(Black); + set_auto_up(true); + tftID=0; +} + LCD::~LCD() { free(buffer);
--- a/Display/LCD.h Mon May 02 22:44:05 2016 +0000 +++ b/Display/LCD.h Mon Feb 06 12:29:33 2017 +0000 @@ -10,6 +10,7 @@ #include "BUS8.h" #include "SPI8.h" #include "SPI16.h" +#include "I2C_bus.h" #include "Protocols.h" #include "GraphicsDisplay.h" @@ -51,6 +52,12 @@ */ LCD(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name); + /** Create a monochrome LCD I2C interface + * @param name The name used by the parent class to access the interface + */ + LCD(proto_t displayproto, int Hz, int address,PinName sda, PinName scl, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char* name); + + /** Destructor * will free framebuffer */
--- a/Inits/SSD1306.cpp Mon May 02 22:44:05 2016 +0000 +++ b/Inits/SSD1306.cpp Mon Feb 06 12:29:33 2017 +0000 @@ -56,6 +56,17 @@ set_orientation(1); locate(0,0); } + +SSD1306::SSD1306(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const char* name , unsigned int LCDSIZE_X, unsigned int LCDSIZE_Y) + : LCD(displayproto, Hz, address, sda, scl, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name) +{ + init(); + cls(); + set_orientation(1); + locate(0,0); +} + + // reset and init the lcd controller void SSD1306::init() {
--- a/Inits/SSD1306.h Mon May 02 22:44:05 2016 +0000 +++ b/Inits/SSD1306.h Mon Feb 06 12:29:33 2017 +0000 @@ -41,6 +41,20 @@ */ SSD1306(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char* name , unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); + /** Create an I2C display interface + * @param displayproto I2C_ + * @param Hz I2C speed in Hz + * @param address I2C address + * @param sda I2C pin + * @param scl I2C pin + * @param name The name used by the parent class to access the interface + * @param LCDSIZE_X x size in pixel - optional + * @param LCDSIZE_Y y size in pixel - optional + */ + SSD1306(proto_t displayproto, int Hz, int address, PinName sda, PinName scl, const char* name , unsigned int LCDSIZE_X = 128, unsigned int LCDSIZE_Y = 64); + + + /** set the contrast of the screen * @note here overrided because of not standard value range * @param o contrast 0-255
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Protocols/I2C_bus.cpp Mon Feb 06 12:29:33 2017 +0000 @@ -0,0 +1,132 @@ +/* mbed UniGraphic library - I2C protocol class + * Copyright (c) 2017 Peter Drescher + * Released under the MIT License: http://mbed.org/license/mit + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "I2C_bus.h" + +I2C_bus::I2C_bus(int Hz, int address, PinName sda, PinName scl) + : _i2c(sda,scl) +{ + _i2c.frequency(Hz); + _address = address; + //hw_reset(); +} + +void I2C_bus::wr_cmd8(unsigned char cmd) +{ + char tmp[2]; + tmp[0] = 0x00; //command + tmp[1] = cmd; + _i2c.write(_address,tmp,2); +} +void I2C_bus::wr_data8(unsigned char data) +{ + _i2c.write(data); // write 8bit +} +void I2C_bus::wr_cmd16(unsigned short cmd) +{ + char tmp[3]; + tmp[0] = 00; //command + tmp[1] = cmd>>8; + tmp[2] = cmd&0xFF; + + _i2c.write(_address,tmp,3); +} +void I2C_bus::wr_data16(unsigned short data) +{ + _i2c.write(data>>8); // write 8bit + _i2c.write(data&0xFF); // write 8bit +} +void I2C_bus::wr_gram(unsigned short data) +{ + _i2c.write(data>>8); // write 8bit + _i2c.write(data&0xFF); // write 8bit +} +void I2C_bus::wr_gram(unsigned short data, unsigned int count) +{ + _i2c.start(); + _i2c.write(_address); + _i2c.write(0x40); // data continue + if((data>>8)==(data&0xFF)) + { + count<<=1; + while(count) + { + _i2c.write(data); // write 8bit + count--; + } + } + else + { + while(count) + { + _i2c.write(data>>8); // write 8bit + _i2c.write(data&0xFF); // write 8bit + count--; + } + } + _i2c.stop(); +} +void I2C_bus::wr_grambuf(unsigned short* data, unsigned int lenght) +{ + _i2c.start(); + _i2c.write(_address); + _i2c.write(0x40); // data continue + while(lenght) + { + _i2c.write((*data)>>8); // write 8bit + _i2c.write((*data)&0xFF); // write 8bit + data++; + lenght--; + } + _i2c.stop(); +} + +void I2C_bus::hw_reset() +{ + +} +void I2C_bus::BusEnable(bool enable) +{ +} + +void I2C_bus::reg_select(unsigned char reg, bool forread) +{ +} + +unsigned int I2C_bus::rd_reg_data32(unsigned char reg) +{ + return 0; +} + +unsigned int I2C_bus::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd) +{ + return 0; +} + +void I2C_bus::dummyread() +{ +} + +unsigned short I2C_bus::rd_gram(bool convert) +{ + return (0); +} + +unsigned short I2C_bus::reg_read(unsigned char reg) +{ + return (0); +} + +void I2C_bus::reg_write(unsigned char reg, unsigned short data) +{ +} \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Protocols/I2C_bus.h Mon Feb 06 12:29:33 2017 +0000 @@ -0,0 +1,139 @@ +#ifndef I2C_bus_H +#define I2C_bus_H + +#include "mbed.h" +#include "Protocols.h" + +/** I2C interface +*/ +class I2C_bus : public Protocols +{ + public: + + /** Create an I2C display interface + * + * @param I2C frquency + * @param I2C address + * @param I2C pin sda + * @param I2C pin scl + */ + I2C_bus(int Hz, int address,PinName sda, PinName scl); + +protected: + + /** Send 8bit command to display controller + * + * @param cmd: byte to send + * + */ + virtual void wr_cmd8(unsigned char cmd); + + /** Send 8bit data to display controller + * + * @param data: byte to send + * + */ + virtual void wr_data8(unsigned char data); + + /** Send 2x8bit command to display controller + * + * @param cmd: halfword to send + * @note in SPI_16 mode a single 16bit transfer will be done + */ + virtual void wr_cmd16(unsigned short cmd); + + /** Send 2x8bit data to display controller + * + * @param data: halfword to send + * @note in SPI_16 mode a single 16bit transfer will be done + */ + virtual void wr_data16(unsigned short data); + + /** Send 16bit pixeldata to display controller + * + * @param data: halfword to send + * + */ + virtual void wr_gram(unsigned short data); + + /** Send same 16bit pixeldata to display controller multiple times + * + * @param data: halfword to send + * @param count: how many + * + */ + virtual void wr_gram(unsigned short data, unsigned int count); + + /** Send array of pixeldata shorts to display controller + * + * @param data: unsigned short pixeldata array + * @param lenght: lenght (in shorts) + * + */ + virtual void wr_grambuf(unsigned short* data, unsigned int lenght); + + /** Read 16bit pixeldata from display controller (with dummy cycle) + * + * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit + * @returns 16bit color + */ + virtual unsigned short rd_gram(bool convert); + + /** Read 4x8bit register data ( + * reading from display ia I2C is not implemented in most controllers ! + * + */ + virtual unsigned int rd_reg_data32(unsigned char reg); + + /** Read 3x8bit ExtendedCommands register data + * reading from display ia I2C is not implemented in most controllers ! + */ + virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd); + + /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent + * reading from display ia I2C is not implemented in most controllers ! + */ + virtual void dummyread (); + + /** ILI932x specific, select register for a successive write or read + * + * reading from display ia I2C is not implemented in most controllers ! + */ + virtual void reg_select(unsigned char reg, bool forread =false); + + /** ILI932x specific, write register with data + * + * @param reg register to write + * @param data 16bit data + * not implemented for I2C ! + */ + virtual void reg_write(unsigned char reg, unsigned short data); + + /** ILI932x specific, read register + * + * @param reg register to be read + * @returns 16bit register value + * not implemented for I2C ! + */ + virtual unsigned short reg_read(unsigned char reg); + + /** HW reset sequence (without display init commands) + * most I2C displays have no reset signal ! + */ + virtual void hw_reset(); + + /** Set ChipSelect high or low + * @param enable 0/1 + * not implemented for I2C ! + */ + virtual void BusEnable(bool enable); + +private: + + I2C _i2c; + int _address; + +}; + + +#endif \ No newline at end of file
--- a/Protocols/Protocols.h Mon May 02 22:44:05 2016 +0000 +++ b/Protocols/Protocols.h Mon Feb 06 12:29:33 2017 +0000 @@ -31,6 +31,7 @@ ,BUS_16 /**< Parallel 16bit, scattered pins */ ,SPI_8 /**< SPI 8bit */ ,SPI_16 /**< SPI 16bit */ + ,I2C_ /**< I2C */ }; #else enum proto_t { @@ -38,6 +39,7 @@ ,BUS_16 /**< Parallel 16bit, scattered pins */ ,SPI_8 /**< SPI 8bit */ ,SPI_16 /**< SPI 16bit */ + ,I2C_ /**< I2C */ }; #endif