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glcd_spi.cpp
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glcd_spi.cpp
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/* ========================================================================== */
/* */
/* glcd_spi.cpp */
/* (c) 2017 VNGIoTLab */
/* */
/* Description: Only Text mode */
/* Thanks to SangTaoClub
/* http://sangtaoclub.net/m/bai-viet/236-share-code-giao-tiep-graphic-lcd-12864-spi-cua-may-gphone-zte.html
/* ========================================================================== */
#include "glcd_spi.h"
#include <Arduino.h>
/*GPIO*/
int _CS, _SCK, _SDA, _AO;
#define SetCS digitalWrite(_CS, HIGH)
#define ResetCS digitalWrite(_CS, LOW)
#define SetSCK digitalWrite(_SCK, HIGH)
#define ResetSCK digitalWrite(_SCK, LOW)
#define SetSDA digitalWrite(_SDA, HIGH)
#define ResetSDA digitalWrite(_SDA, LOW)
#define SetAO digitalWrite(_AO, HIGH) //Chot du lieu Command va Data (C/D)
#define ResetAO digitalWrite(_AO, LOW)
/*Mode and more*/
#define GRAPHIC_MODE 1
#define TEXT_MODE 0
int _GRAPHIC_MODE = TEXT_MODE; //0: Text mode, 1: Graphic mode
#define ROW_MIN 0
#define ROW_MAX 7
#define COL_MIN 0
#define COL_MAX 20
/*Fonts table for Text mode*/
unsigned char font[][6] ={ //Font 5x7
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00} // 20
,{0x00, 0x00, 0x00, 0x5f, 0x00, 0x00} // 21 !
,{0x00, 0x00, 0x07, 0x00, 0x07, 0x00} // 22 "
,{0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14} // 23 #
,{0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12} // 24 $
,{0x00, 0x23, 0x13, 0x08, 0x64, 0x62} // 25 %
,{0x00, 0x36, 0x49, 0x55, 0x22, 0x50} // 26 &
,{0x00, 0x00, 0x05, 0x03, 0x00, 0x00} // 27 '
,{0x00, 0x00, 0x1c, 0x22, 0x41, 0x00} // 28 (
,{0x00, 0x00, 0x41, 0x22, 0x1c, 0x00} // 29 )
,{0x00, 0x14, 0x08, 0x3e, 0x08, 0x14} // 2a *
,{0x00, 0x08, 0x08, 0x3e, 0x08, 0x08} // 2b +
,{0x00, 0x00, 0x50, 0x30, 0x00, 0x00} // 2c ,
,{0x00, 0x08, 0x08, 0x08, 0x08, 0x08} // 2d -
,{0x00, 0x00, 0x60, 0x60, 0x00, 0x00} // 2e .
,{0x00, 0x20, 0x10, 0x08, 0x04, 0x02} // 2f /
,{0x00, 0x3e, 0x51, 0x49, 0x45, 0x3e} // 30 0
,{0x00, 0x00, 0x42, 0x7f, 0x40, 0x00} // 31 1
,{0x00, 0x42, 0x61, 0x51, 0x49, 0x46} // 32 2
,{0x00, 0x21, 0x41, 0x45, 0x4b, 0x31} // 33 3
,{0x00, 0x18, 0x14, 0x12, 0x7f, 0x10} // 34 4
,{0x00, 0x27, 0x45, 0x45, 0x45, 0x39} // 35 5
,{0x00, 0x3c, 0x4a, 0x49, 0x49, 0x30} // 36 6
,{0x00, 0x01, 0x71, 0x09, 0x05, 0x03} // 37 7
,{0x00, 0x36, 0x49, 0x49, 0x49, 0x36} // 38 8
,{0x00, 0x06, 0x49, 0x49, 0x29, 0x1e} // 39 9
,{0x00, 0x00, 0x36, 0x36, 0x00, 0x00} // 3a :
,{0x00, 0x00, 0x56, 0x36, 0x00, 0x00} // 3b ;
,{0x00, 0x08, 0x14, 0x22, 0x41, 0x00} // 3c <
,{0x00, 0x14, 0x14, 0x14, 0x14, 0x14} // 3d =
,{0x00, 0x00, 0x41, 0x22, 0x14, 0x08} // 3e >
,{0x00, 0x02, 0x01, 0x51, 0x09, 0x06} // 3f ?
,{0x00, 0x32, 0x49, 0x79, 0x41, 0x3e} // 40 @
,{0x00, 0x7e, 0x11, 0x11, 0x11, 0x7e} // 41 A
,{0x00, 0x7f, 0x49, 0x49, 0x49, 0x36} // 42 B
,{0x00, 0x3e, 0x41, 0x41, 0x41, 0x22} // 43 C
,{0x00, 0x7f, 0x41, 0x41, 0x22, 0x1c} // 44 D
,{0x00, 0x7f, 0x49, 0x49, 0x49, 0x41} // 45 E
,{0x00, 0x7f, 0x09, 0x09, 0x09, 0x01} // 46 F
,{0x00, 0x3e, 0x41, 0x49, 0x49, 0x7a} // 47 G
,{0x00, 0x7f, 0x08, 0x08, 0x08, 0x7f} // 48 H
,{0x00, 0x00, 0x41, 0x7f, 0x41, 0x00} // 49 I
,{0x00, 0x20, 0x40, 0x41, 0x3f, 0x01} // 4a J
,{0x00, 0x7f, 0x08, 0x14, 0x22, 0x41} // 4b K
,{0x00, 0x7f, 0x40, 0x40, 0x40, 0x40} // 4c L
,{0x00, 0x7f, 0x02, 0x0c, 0x02, 0x7f} // 4d M
,{0x00, 0x7f, 0x04, 0x08, 0x10, 0x7f} // 4e N
,{0x00, 0x3e, 0x41, 0x41, 0x41, 0x3e} // 4f O
,{0x00, 0x7f, 0x09, 0x09, 0x09, 0x06} // 50 P
,{0x00, 0x3e, 0x41, 0x51, 0x21, 0x5e} // 51 Q
,{0x00, 0x7f, 0x09, 0x19, 0x29, 0x46} // 52 R
,{0x00, 0x46, 0x49, 0x49, 0x49, 0x31} // 53 S
,{0x00, 0x01, 0x01, 0x7f, 0x01, 0x01} // 54 T
,{0x00, 0x3f, 0x40, 0x40, 0x40, 0x3f} // 55 U
,{0x00, 0x1f, 0x20, 0x40, 0x20, 0x1f} // 56 V
,{0x00, 0x3f, 0x40, 0x38, 0x40, 0x3f} // 57 W
,{0x00, 0x63, 0x14, 0x08, 0x14, 0x63} // 58 X
,{0x00, 0x07, 0x08, 0x70, 0x08, 0x07} // 59 Y
,{0x00, 0x61, 0x51, 0x49, 0x45, 0x43} // 5a Z
,{0x00, 0x00, 0x7f, 0x41, 0x41, 0x00} // 5b [
,{0x00, 0x02, 0x04, 0x08, 0x10, 0x20} // 5c �
,{0x00, 0x00, 0x41, 0x41, 0x7f, 0x00} // 5d ]
,{0x00, 0x04, 0x02, 0x01, 0x02, 0x04} // 5e ^
,{0x00, 0x40, 0x40, 0x40, 0x40, 0x40} // 5f _
,{0x00, 0x00, 0x01, 0x02, 0x04, 0x00} // 60 `
,{0x00, 0x20, 0x54, 0x54, 0x54, 0x78} // 61 a
,{0x00, 0x7f, 0x48, 0x44, 0x44, 0x38} // 62 b
,{0x00, 0x38, 0x44, 0x44, 0x44, 0x20} // 63 c
,{0x00, 0x38, 0x44, 0x44, 0x48, 0x7f} // 64 d
,{0x00, 0x38, 0x54, 0x54, 0x54, 0x18} // 65 e
,{0x00, 0x08, 0x7e, 0x09, 0x01, 0x02} // 66 f
,{0x00, 0x0c, 0x52, 0x52, 0x52, 0x3e} // 67 g
,{0x00, 0x7f, 0x08, 0x04, 0x04, 0x78} // 68 h
,{0x00, 0x00, 0x44, 0x7d, 0x40, 0x00} // 69 i
,{0x00, 0x20, 0x40, 0x44, 0x3d, 0x00} // 6a j
,{0x00, 0x7f, 0x10, 0x28, 0x44, 0x00} // 6b k
,{0x00, 0x00, 0x41, 0x7f, 0x40, 0x00} // 6c l
,{0x00, 0x7c, 0x04, 0x18, 0x04, 0x78} // 6d m
,{0x00, 0x7c, 0x08, 0x04, 0x04, 0x78} // 6e n
,{0x00, 0x38, 0x44, 0x44, 0x44, 0x38} // 6f o
,{0x00, 0x7c, 0x14, 0x14, 0x14, 0x08} // 70 p
,{0x00, 0x08, 0x14, 0x14, 0x18, 0x7c} // 71 q
,{0x00, 0x7c, 0x08, 0x04, 0x04, 0x08} // 72 r
,{0x00, 0x48, 0x54, 0x54, 0x54, 0x20} // 73 s
,{0x00, 0x04, 0x3f, 0x44, 0x40, 0x20} // 74 t
,{0x00, 0x3c, 0x40, 0x40, 0x20, 0x7c} // 75 u
,{0x00, 0x1c, 0x20, 0x40, 0x20, 0x1c} // 76 v
,{0x00, 0x3c, 0x40, 0x30, 0x40, 0x3c} // 77 w
,{0x00, 0x44, 0x28, 0x10, 0x28, 0x44} // 78 x
,{0x00, 0x0c, 0x50, 0x50, 0x50, 0x3c} // 79 y
,{0x00, 0x44, 0x64, 0x54, 0x4c, 0x44} // 7a z
,{0x00, 0x00, 0x08, 0x36, 0x41, 0x00} // 7b {
,{0x00, 0x00, 0x00, 0x7f, 0x00, 0x00} // 7c |
,{0x00, 0x00, 0x41, 0x36, 0x08, 0x00} // 7d }
,{0x00, 0x10, 0x08, 0x08, 0x10, 0x08} // 7e ->
,{0x00, 0x78, 0x46, 0x41, 0x46, 0x78} // 7f <-
};
void lcd_write(unsigned char cd, unsigned char data){ //SPI 4Line
unsigned char i = 0;
//Select LCD
ResetCS; //CS=0
//Command/Data
if(cd){
SetAO; //AO=1
}
else{
ResetAO; //AO=0
}
//Data payload
for(i=0; i<8; ++i){
if(!(data&0x80)){
ResetSDA; //SDA=0;
}
else{
SetSDA; //SDA=1;
}
ResetSCK; //SCK=0;
SetSCK; //SCK=1;
data <<= 1;
}
//Toggle AO
if(cd){
ResetAO; //AO=0
}
else{
SetAO; //AO=1
} //AO=~AO;
//Unselect
SetCS; //CS=1
}
//X la vi tri hien thi 0-20 (Text font 5x7), Graphic 0-127
//Y la dong hien thi 0-7
void lcd_gotoxy(unsigned char xx, unsigned char y){
unsigned char x = xx;
if (_GRAPHIC_MODE == TEXT_MODE){ //Text mode
x *= 6; //Only for Text mode
}
lcd_write(0,(x&0x0f));
lcd_write(0,((x>>4)&0x07)|0x10);
lcd_write(0,(y&0x0f)|0xb0);
}
void lcd_clear(unsigned char row){
unsigned char i=0, j=0;
for(i=0; i<row; ++i){
lcd_gotoxy(0, i);
for(j=0; j<130; ++j){
lcd_write(1,0);
}//for j
}//for i
lcd_gotoxy(0,0);
}
void lcd_putchar(char dat){
unsigned char v=0;
char ch = dat;
if((ch >= 0x20) && (ch <= 0x7f)){
ch -= 32;
for(v=0; v<6; ++v)
lcd_write(1, font[ch][v]);
}
}
void lcd_puts(char *s){
while(*s){
lcd_putchar(*s++);
}
}
void lcd_init(void){
lcd_write(0,0xE2); //Reset
delay(100);
lcd_write(0,0xAF); //Display ON, 0xAE - OFF
lcd_write(0,0x2F); //Power control
lcd_clear(ROW_MAX + 1); //Clear 8 line on screen
}
///////////////////////////////////////END LOCAL LIB//////////////////////////////////////////////////
/////////////////////////////////////New API for VBLUno board////////////////////////////////////////
/*
* @brief Init for SPI GLCD
* @params CS_: CS pin on VBLUno
* @params SCK_: SCK pin on VBLUno
* @params SDA_: SDA pin on VBLUno
* @params AO_: AO pin on VBLUno
* @params GRAPHIC_MODE_: GLCD Mode
* 0: Text mode
* 1: Graphic mode (not support in this library)
*/
void InitLcd(int CS_, int SCK_, int SDA_, int AO_, int GRAPHIC_MODE_){
/*Init GPIO*/
pinMode(CS_, OUTPUT);
pinMode(SCK_, OUTPUT);
pinMode(SDA_, OUTPUT);
pinMode(AO_, OUTPUT);
/*set vars*/
_CS = CS_;
_SCK = SCK_;
_SDA = SDA_;
_AO = AO_;
_GRAPHIC_MODE = GRAPHIC_MODE_;
ResetSCK;
SetCS;
ResetSDA;
ResetAO;
/*Init GLCD*/
lcd_init();
lcd_gotoxy(0, 0);
}
/*
* @brief Test function
*/
void TestLcd(){
PrintLcd(0, 0, "VNGIoTLab");
PrintLcd(1, 0, "VBLUno v2 board");
PrintLcd(2, 0, "Test SPI_GLCD Library");
}
/*
* @brief Clear all screen
*/
void ClearLcd(void){
lcd_clear(ROW_MAX + 1);
}
int check_row(int row){
int r = row;
if(r < ROW_MIN){
r = ROW_MIN;
}
else if(r > ROW_MAX){
r = ROW_MAX;
}
return r;
}
int check_col(int col){
int c = col;
if(c < COL_MIN){
c = COL_MIN;
}
else if(c > COL_MAX){
c = COL_MAX;
}
return c;
}
/*
* @brief Print a string on screen
* @params row: 0-7
* @params col: 0-20
* @params stringdata: a string (1 to 21 character)
* @note Size of stringdata is not greater than 21 character
*/
void PrintLcd(int row, int col, char* stringdata){
//check input
int r = check_row(row);
int c = check_col(col);
//go to position
lcd_gotoxy(c, r);
//print string
lcd_puts(stringdata);
}
/*
* @brief Print a string on screen
* @params row: 0-7
* @params col: 0-20
* @params num: integer number
*/
void PrintIntLcd(int row, int col, int num){
char buff[21];
//check input
int r = check_row(row);
int c = check_col(col);
//go to position
lcd_gotoxy(c, r);
//convert data
sprintf(buff, "%d", num);
//print string
lcd_puts((char*)buff);
}
/*
* @brief Print a string on screen
* @params row: 0-7
* @params col: 0-20
* @params doublenum: double number
* @note precision is %0.4f
*/
void PrintFloatLcd(int row, int col, double doublenum){
char buff[20];
//check input
int r = check_row(row);
int c = check_col(col);
//go to position
lcd_gotoxy(c, r);
//convert data
sprintf(buff, "%0.4f", doublenum);
//print string
lcd_puts((char*)buff);
}