Ryota Yamamoto
I2C LCD SPLC792A
Diff: SPLC792A_I2C.cpp
- Revision:
- 0:070d3d0b6f37
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SPLC792A_I2C.cpp Sat Mar 18 01:41:30 2017 +0000
@@ -0,0 +1,226 @@
+#include "SPLC792A_I2C.h"
+
+LCDI2C_SPLC792A::LCDI2C_SPLC792A(PinName i2c_SDA, PinName i2c_SCL, unsigned char lcd_LOOP){
+ lcdCols = LCD_COLS;
+ lcdRows = LCD_ROWS;
+
+ lcd = new I2C(i2c_SDA, i2c_SCL);
+
+ loopMode = (lcd_LOOP > 2) ? 2 : lcd_LOOP;
+
+ box[0] = 0;
+ box[1] = 0;
+ i2c_addr = SPLC792A_I2C_SLAVEADDR << 1; //mbedはスレーブアドレスが8bitなので左シフトする
+ wait_ms(50);
+ lcd->frequency(SPLC792A_I2C_FREQ);
+}
+
+LCDI2C_SPLC792A::LCDI2C_SPLC792A(unsigned char lcd_Cols, unsigned char lcd_Rows, PinName i2c_SDA, PinName i2c_SCL, unsigned char lcd_LOOP){
+ lcdCols = lcd_Cols;
+ lcdRows = lcd_Rows;
+
+ lcd = new I2C(i2c_SDA, i2c_SCL);
+
+ loopMode = (lcd_LOOP > 2) ? 2 : lcd_LOOP;
+
+ box[0] = 0;
+ box[1] = 0;
+ i2c_addr = SPLC792A_I2C_SLAVEADDR << 1; //mbedはスレーブアドレスが8bitなので左シフトする
+ wait_ms(50);
+ lcd->frequency(SPLC792A_I2C_FREQ);
+}
+
+LCDI2C_SPLC792A::~LCDI2C_SPLC792A(){
+ delete lcd;
+}
+
+void LCDI2C_SPLC792A::sendCmd(char Lbyte){
+ //A0 bit = 0 then Command
+ box[0] = 0x00;
+ box[1] = Lbyte;
+ lcd->write(i2c_addr, box, 2);
+}
+
+void LCDI2C_SPLC792A::sendVal(char Lbyte){
+ //A0 bit = 1 then Data Value
+ box[0] = 0x40;
+ box[1] = Lbyte;
+ lcd->write(i2c_addr, box, 2);
+}
+
+void LCDI2C_SPLC792A::init(){
+ //カーソルカウンタを初期化
+ nowRow = 1;
+ nowCol = 1;
+ //各モードの初期化
+ sendCmd(0x3F); //Data-transfer 8bit mode, Two-Lines Display
+ wait_us(15);
+ sendCmd(0x39); //DoubleHeightMode = false, 5x8 dots x Two-Lines
+ wait_us(15);
+ nowContrast = SPLC792A_DEFAULT_CONTRAST;
+ sendCmd(0x50 | ((nowContrast & 30) >> 4)); //LCD Contrast setting High-2bit
+ sendCmd(0x70 | (nowContrast & 0x0F)); //LCD Contrast setting Low-4bit
+ sendCmd(0x60 | 0x04); //Set LCD voltage: 3.636V(default 3.333V)
+ wait_us(15);
+ sendCmd(0x0D); //Display ON, Blink ON, Cursor OFF
+ sendCmd(0x01); //Clear Display
+}
+
+void LCDI2C_SPLC792A::reset(){
+ init();
+ wait_ms(5);
+}
+
+void LCDI2C_SPLC792A::cls(){
+ sendCmd(0x01);
+ wait_ms(5);
+}
+
+void LCDI2C_SPLC792A::clear(){
+ cls();
+}
+
+void LCDI2C_SPLC792A::home(){
+ nowRow = 1;
+ nowCol = 1;
+ sendCmd(0x02);
+ wait_ms(5);
+}
+
+void LCDI2C_SPLC792A::setCharCode(const char characterCode){
+ //ASCII code (e.g. A = 0x41, z = 0x7a)
+ sendVal(characterCode);
+ nowCol++;
+
+ //画面右端にカーソルが来ていたら
+ if(nowCol > lcdCols && loopMode != 0){
+ if(loopMode == 1){ //モード1:同じ行の先頭に戻る
+ nowCol = 1;
+ setCursorfromAddr((nowRow == 1)?0x00:0x40);
+ }else if(loopMode == 2){ //モード2:別の行の先頭に戻る
+ nowRow = (nowRow%LCD_ROWS)+1;
+ nowCol = 1;
+ setCursorfromAddr((nowRow == 1)?0x00:0x40);
+ }
+ }
+}
+
+void LCDI2C_SPLC792A::writeString(const char *str, unsigned short dispWaitTime_ms){
+ while(*str){
+ setCharCode(*str);
+ str++;
+ if(dispWaitTime_ms < 1) continue;
+ wait_ms((*str == ' ') ? dispWaitTime_ms << 1 : dispWaitTime_ms);
+ }
+}
+
+void LCDI2C_SPLC792A::print(const char *str, unsigned short dispWaitTime_ms){
+ writeString(str, dispWaitTime_ms);
+}
+
+void LCDI2C_SPLC792A::write(const char *str, unsigned short dispWaitTime_ms){
+ writeString(str, dispWaitTime_ms);
+}
+
+void LCDI2C_SPLC792A::o(const char *str, unsigned short dispWaitTime_ms){
+ writeString(str, dispWaitTime_ms);
+}
+
+void LCDI2C_SPLC792A::setCursorfromAddr(char cursorAddr){
+ if(cursorAddr < 0x00 || cursorAddr > 0x67) cursorAddr = 0x67;
+ if(cursorAddr > 0x27 && cursorAddr < 0x40) cursorAddr = 0x67;
+ sendCmd(0x80 | cursorAddr);
+ wait_us(20);
+}
+
+void LCDI2C_SPLC792A::setCursorfromColRow(unsigned char col, unsigned char row){
+ col = (col == 0) ? 1 : (col > lcdCols) ? lcdCols : col;
+ row = (row == 0) ? 1 : (row > lcdRows) ? lcdRows : row;
+ nowCol = col;
+ nowRow = row;
+ setCursorfromAddr(((row == 1) ? 0x00 : 0x40) | (col - 1));
+}
+
+void LCDI2C_SPLC792A::setCursor(unsigned char x, unsigned char y){
+ setCursorfromColRow(x, y);
+}
+
+void LCDI2C_SPLC792A::setDisplay(bool display_on, bool cursor_underbar_on, bool blink_on){
+ sendCmd(0x08 | (display_on?4:0 | cursor_underbar_on?2:0 | blink_on?1:0));
+ wait_us(20);
+}
+
+void LCDI2C_SPLC792A::setEntryMode(bool shift_on, bool isIncrement){
+ sendCmd(0x04 | shift_on?2:0 | isIncrement?1:0);
+ wait_us(20);
+}
+
+void LCDI2C_SPLC792A::setFunction(bool isTwoLineLCD, bool isDoubleHeightMode){
+ sendCmd(0x20 | isDoubleHeightMode?16:0 | isTwoLineLCD?8:0);
+ wait_us(15);
+ sendCmd(0x21 | isDoubleHeightMode?16:0 | isTwoLineLCD?8:0);
+ wait_us(15);
+}
+
+void LCDI2C_SPLC792A::setShift(bool cursor_shift_on, bool display_shift_on){
+ sendCmd(0x01 | cursor_shift_on?8:0 | display_shift_on?4:0);
+}
+
+void LCDI2C_SPLC792A::setContrast(char voltage_0to7, char contrast_0to64){
+ if(voltage_0to7 < 0 || voltage_0to7 > 7) voltage_0to7 = 4;
+ if(contrast_0to64 < 0 || contrast_0to64 > 64) contrast_0to64 = SPLC792A_DEFAULT_CONTRAST;
+
+ sendCmd(0x50 | ((contrast_0to64 & 30) >> 4)); //LCD Contrast setting High-2bit
+ sendCmd(0x70 | (contrast_0to64 & 0x0F)); //LCD Contrast setting Low-4bit
+ sendCmd(0x60 | voltage_0to7); //Set LCD voltage
+
+ nowContrast = contrast_0to64;
+ nowVoltage = voltage_0to7;
+}
+
+char LCDI2C_SPLC792A::getRow(){
+ return nowRow;
+}
+
+char LCDI2C_SPLC792A::getCol(){
+ return nowCol;
+}
+
+char LCDI2C_SPLC792A::getContrast(){
+ return nowContrast;
+}
+
+char LCDI2C_SPLC792A::getVoltage0to7(){
+ return nowVoltage;
+}
+
+float LCDI2C_SPLC792A::getVoltageValue(){
+ float val = 0.0f;
+ switch(nowVoltage){
+ case 0:
+ val = 1.818f;
+ break;
+ case 1:
+ val = 2.222f;
+ break;
+ case 2:
+ val = 2.667f;
+ break;
+ case 3:
+ val = 3.333f;
+ break;
+ case 4:
+ val = 3.636f;
+ break;
+ case 5:
+ val = 4.000f;
+ break;
+ case 6:
+ val = 4.444f;
+ break;
+ case 7:
+ val = 5.000f;
+ break;
+ }
+ return val;
+}