Kenji Arai
Extended library from C12832 Lib. by Peter Drescher, Chris Styles & Mihail Stoyanov. LCD in the market such as AQM1248A (Akizuki), AD-12864-SPI (antendo), NHD-C12832 (Newhaven), ST7565 (adafruit) and so on
Dependents: CW_Decoder_using_FFT_on_F446 LPC1114_SPI_LCD_ST7565family_test
Fork of
C12832
by 
Components
Original library is below link.
http://mbed.org/teams/components/code/C12832/
https://mbed.org/users/dreschpe/code/C12832_lcd/
I extended applicable LCD's not only 128 x 32 but also 128 x 48 and 128 x 64 type of SPI LCD using ST7565 controller.
I have checked AD-12864-SPI and AQM1248 LCD.
Import programLPC1114_SPI_LCD_ST7565family_test
Controller chip is ST7565
Last commit 27 Feb 2021 by 
Kenji Arai
Diff: ST7565_SPI_LCD.cpp
- Revision:
- 23:233a0d635d9d
- Parent:
- 22:7d03976a0cb3
--- a/ST7565_SPI_LCD.cpp Sat Dec 13 05:29:11 2014 +0000
+++ b/ST7565_SPI_LCD.cpp Wed Aug 05 05:08:59 2020 +0000
@@ -1,16 +1,17 @@
/*
EXTEND for SPI interface LCD which is using ST7565 controller
- Modified by Kenji Arai / JH1PJL
- http://www.page.sannet.ne.jp/kenjia/index.html
- http://mbed.org/users/kenjiArai/
+ Modified by Kenji Arai / JH1PJL
+ http://www7b.biglobe.ne.jp/~kenjia/
+ https://os.mbed.com/users/kenjiArai/
Started: September 20th, 2014
Revised: December 13th, 2014
+ Revised: August 5th, 2020
original file: C12832.cpp
original Library name: C12832
*/
-//---------- ORIGINAL Header ----------------------------------------------------
+//---------- ORIGINAL Header ---------------------------------------------------
/* mbed library for the mbed Lab Board 128*32 pixel LCD
* use C12832 controller
* Copyright (c) 2012 Peter Drescher - DC2PD
@@ -40,38 +41,50 @@
//#define DEBUG
// Com
#ifdef DEBUG
-#define BAUD(x) pcx.baud(x)
-#define GETC(x) pcx.getc(x)
-#define PUTC(x) pcx.putc(x)
-#define PRINTF(...) pcx.printf(__VA_ARGS__)
-#define READABLE(x) pcx.readable(x)
+#define PRINTF(...) printf(__VA_ARGS__)
#else
-#define BAUD(x) {;}
-#define GETC(x) {;}
-#define PUTC(x) {;}
#define PRINTF(...) {;}
-#define READABLE(x) {;}
-#endif
-#ifdef DEBUG
-// com !!!Please specify the pin!!!!
-Serial pcx(?,?); // Communication with Host
#endif
-ST7565::ST7565(PinName mosi, PinName sck,
- PinName reset, PinName a0, PinName ncs, LCDType type, const char* name)
- : GraphicsDisplay(name),_spi(mosi,NC,sck),_reset(reset),_A0(a0),_CS(ncs)
+ST7565::ST7565
+(
+ PinName mosi, PinName sck,
+ PinName reset,
+ PinName a0,
+ PinName ncs,
+ LCDType type,
+ const char* name
+):
+ GraphicsDisplay(name),
+ _spi_p(new SPI(mosi,NC,sck)), _spi(*_spi_p),
+ _reset(reset),
+ _A0(a0),
+ _CS(ncs)
{
initialize(type);
}
-ST7565::ST7565(SPI& p_spi, PinName reset, PinName a0, PinName ncs, LCDType type, const char* name)
- : GraphicsDisplay(name),_spi(p_spi),_reset(reset),_A0(a0),_CS(ncs)
+ST7565::ST7565
+(
+ SPI& p_spi,
+ PinName reset,
+ PinName a0,
+ PinName ncs,
+ LCDType type,
+ const char* name
+):
+ GraphicsDisplay(name),
+ _spi(p_spi),
+ _reset(reset),
+ _A0(a0),
+ _CS(ncs)
{
initialize(type);
}
-void ST7565::initialize(LCDType type){
- switch (type){
+void ST7565::initialize(LCDType type)
+{
+ switch (type) {
case LCD128x32:
lcd_width = 128;
lcd_height = 32;
@@ -80,7 +93,7 @@
lcd_width = 128;
lcd_height = 48;
break;
- case LCD128x64:
+ case LCD128x64:
lcd_width = 128;
lcd_height = 64;
break;
@@ -93,37 +106,43 @@
lcd_reset();
}
-int ST7565::width(){
+int ST7565::width()
+{
// PRINTF("W:%d",lcd_width);
return(lcd_width);
}
-int ST7565::height(){
+int ST7565::height()
+{
// PRINTF("H:%d",lcd_height);
return(lcd_height);
}
-void ST7565::invert(unsigned int o){
- if(o == 0){
+void ST7565::invert(unsigned int o)
+{
+ if(o == 0) {
wr_cmd(0xA6);
} else {
wr_cmd(0xA7);
}
}
-void ST7565::set_contrast(unsigned int o){
+void ST7565::set_contrast(unsigned int o)
+{
contrast = o;
wr_cmd(0x23); // Vo voltage reg.
wr_cmd(0x81); // set volume
wr_cmd(o & 0x3F);
}
-unsigned int ST7565::get_contrast(void){
+unsigned int ST7565::get_contrast(void)
+{
return(contrast);
}
// write command to lcd controller
-void ST7565::wr_cmd(unsigned char cmd){
+void ST7565::wr_cmd(unsigned char cmd)
+{
_A0 = 0;
_CS = 0;
_spi.write(cmd);
@@ -131,7 +150,8 @@
}
// write data to lcd controller
-void ST7565::wr_dat(unsigned char dat){
+void ST7565::wr_dat(unsigned char dat)
+{
_A0 = 1;
_CS = 0;
_spi.write(dat);
@@ -139,7 +159,8 @@
}
// reset and init the lcd controller
-void ST7565::lcd_reset(){
+void ST7565::lcd_reset()
+{
_spi.format(8,0);
_spi.frequency(10000000); // 10 MHz SPI clock
_A0 = 0;
@@ -147,7 +168,7 @@
_reset = 0; // display reset
wait_us(50);
_reset = 1; // end reset
- wait_ms(5);
+ ThisThread::sleep_for(5ms);
// initialize sequence
wr_cmd(0xaf); // display on
wr_cmd(0x2f); // power control set
@@ -174,7 +195,8 @@
}
// set one pixel in buffer
-void ST7565::pixel(int x, int y, int color){
+void ST7565::pixel(int x, int y, int color)
+{
// first check parameter
if(x > lcd_width || y > lcd_height || x < 0 || y < 0) return;
if(draw_mode == NORMAL) {
@@ -189,9 +211,10 @@
}
// update lcd
-void ST7565::copy_to_lcd(void){
-int i=0;
-
+void ST7565::copy_to_lcd(void)
+{
+ int i=0;
+
// page 0
wr_cmd(0x00); // set column low nibble 0
wr_cmd(0x10); // set column hi nibble 0
@@ -224,7 +247,7 @@
for(i=384; i<512; i++) {
wr_dat(buffer[i]);
}
- if ((lcd_height == 48) || (lcd_height == 64)){
+ if ((lcd_height == 48) || (lcd_height == 64)) {
// page 4
wr_cmd(0x00); // set column low nibble 0
wr_cmd(0x10); // set column hi nibble 0
@@ -241,8 +264,8 @@
for(i=640; i<768; i++) {
wr_dat(buffer[i]);
}
- }
- if (lcd_height == 64){
+ }
+ if (lcd_height == 64) {
// page 6
wr_cmd(0x00); // set column low nibble 0
wr_cmd(0x10); // set column hi nibble 0
@@ -263,16 +286,18 @@
_CS = 0;
}
-void ST7565::cls(void){
+void ST7565::cls(void)
+{
memset(buffer,0x00,1024); // clear display buffer
copy_to_lcd();
}
-void ST7565::line(int x0, int y0, int x1, int y1, int color){
-int dx = 0, dy = 0;
-int dx_sym = 0, dy_sym = 0;
-int dx_x2 = 0, dy_x2 = 0;
-int di = 0;
+void ST7565::line(int x0, int y0, int x1, int y1, int color)
+{
+ int dx = 0, dy = 0;
+ int dx_sym = 0, dy_sym = 0;
+ int dx_x2 = 0, dy_x2 = 0;
+ int di = 0;
dx = x1-x0;
dy = y1-y0;
@@ -327,23 +352,41 @@
}
pixel(x0, y0, color);
}
- if(auto_up){ copy_to_lcd();}
+ if(auto_up) {
+ copy_to_lcd();
+ }
}
-void ST7565::rect(int x0, int y0, int x1, int y1, int color){
- if (x1 > x0){ line(x0,y0,x1,y0,color);
- } else { line(x1,y0,x0,y0,color);}
- if (y1 > y0){ line(x0,y0,x0,y1,color);
- } else { line(x0,y1,x0,y0,color);}
- if (x1 > x0){ line(x0,y1,x1,y1,color);
- } else { line(x1,y1,x0,y1,color);}
- if (y1 > y0){ line(x1,y0,x1,y1,color);
- } else { line(x1,y1,x1,y0,color);}
- if(auto_up){ copy_to_lcd();}
+void ST7565::rect(int x0, int y0, int x1, int y1, int color)
+{
+ if (x1 > x0) {
+ line(x0,y0,x1,y0,color);
+ } else {
+ line(x1,y0,x0,y0,color);
+ }
+ if (y1 > y0) {
+ line(x0,y0,x0,y1,color);
+ } else {
+ line(x0,y1,x0,y0,color);
+ }
+ if (x1 > x0) {
+ line(x0,y1,x1,y1,color);
+ } else {
+ line(x1,y1,x0,y1,color);
+ }
+ if (y1 > y0) {
+ line(x1,y0,x1,y1,color);
+ } else {
+ line(x1,y1,x1,y0,color);
+ }
+ if(auto_up) {
+ copy_to_lcd();
+ }
}
-void ST7565::fillrect(int x0, int y0, int x1, int y1, int color){
-int l,c,i;
+void ST7565::fillrect(int x0, int y0, int x1, int y1, int color)
+{
+ int l,c,i;
if(x0 > x1) {
i = x0;
@@ -360,20 +403,23 @@
pixel(l,c,color);
}
}
- if(auto_up){ copy_to_lcd();}
+ if(auto_up) {
+ copy_to_lcd();
+ }
}
-void ST7565::circle(int x0, int y0, int r, int color){
-int draw_x0, draw_y0;
-int draw_x1, draw_y1;
-int draw_x2, draw_y2;
-int draw_x3, draw_y3;
-int draw_x4, draw_y4;
-int draw_x5, draw_y5;
-int draw_x6, draw_y6;
-int draw_x7, draw_y7;
-int xx, yy;
-int di;
+void ST7565::circle(int x0, int y0, int r, int color)
+{
+ int draw_x0, draw_y0;
+ int draw_x1, draw_y1;
+ int draw_x2, draw_y2;
+ int draw_x3, draw_y3;
+ int draw_x4, draw_y4;
+ int draw_x5, draw_y5;
+ int draw_x6, draw_y6;
+ int draw_x7, draw_y7;
+ int xx, yy;
+ int di;
//WindowMax();
if (r == 0) { /* no radius */
@@ -429,65 +475,75 @@
draw_y5++;
draw_y6--;
draw_y7--;
- if ((draw_x0 <= width()) && (draw_y0>=0)){
+ if ((draw_x0 <= width()) && (draw_y0>=0)) {
pixel(draw_x0, draw_y0, color);
}
- if ((draw_x1 >= 0) && (draw_y1 >= 0)){
+ if ((draw_x1 >= 0) && (draw_y1 >= 0)) {
pixel(draw_x1, draw_y1, color);
}
- if ((draw_x2 <= width()) && (draw_y2 <= height())){
+ if ((draw_x2 <= width()) && (draw_y2 <= height())) {
pixel(draw_x2, draw_y2, color);
}
- if ((draw_x3 >=0 ) && (draw_y3 <= height())){
+ if ((draw_x3 >=0 ) && (draw_y3 <= height())) {
pixel(draw_x3, draw_y3, color);
}
- if ((draw_x4 <= width()) && (draw_y4 >= 0)){
+ if ((draw_x4 <= width()) && (draw_y4 >= 0)) {
pixel(draw_x4, draw_y4, color);
}
- if ((draw_x5 >= 0) && (draw_y5 >= 0)){
+ if ((draw_x5 >= 0) && (draw_y5 >= 0)) {
pixel(draw_x5, draw_y5, color);
}
- if ((draw_x6 <=width()) && (draw_y6 <= height())){
+ if ((draw_x6 <=width()) && (draw_y6 <= height())) {
pixel(draw_x6, draw_y6, color);
}
- if ((draw_x7 >= 0) && (draw_y7 <= height())){
+ if ((draw_x7 >= 0) && (draw_y7 <= height())) {
pixel(draw_x7, draw_y7, color);
}
}
- if(auto_up){ copy_to_lcd();}
+ if(auto_up) {
+ copy_to_lcd();
+ }
}
-void ST7565::fillcircle(int x, int y, int r, int color){
-int i,up;
+void ST7565::fillcircle(int x, int y, int r, int color)
+{
+ int i,up;
up = auto_up;
auto_up = 0; // off
- for (i = 0; i <= r; i++){
+ for (i = 0; i <= r; i++) {
circle(x,y,i,color);
}
auto_up = up;
- if(auto_up){ copy_to_lcd();}
+ if(auto_up) {
+ copy_to_lcd();
+ }
}
-void ST7565::setmode(int mode){
+void ST7565::setmode(int mode)
+{
draw_mode = mode;
}
-void ST7565::locate(int x, int y){
+void ST7565::locate(int x, int y)
+{
char_x = x;
char_y = y;
}
-int ST7565::columns(){
+int ST7565::columns()
+{
return width() / font[1];
}
-int ST7565::rows(){
+int ST7565::rows()
+{
return height() / font[2];
}
-void ST7565::line_clear(int y){
-unsigned int vert,j,i,x;
+void ST7565::line_clear(int y)
+{
+ unsigned int vert,j,i,x;
// read font parameter from start of array
vert = font[2]; // get vert size of font
@@ -496,39 +552,45 @@
for (i=0; i<width(); i++) { // horz line
pixel(x+i,y+j,0);
}
- }
+ }
}
-int ST7565::_putc(int value){
+int ST7565::_putc(int value)
+{
if (value == 0x0d) { // new line
char_x = 0;
char_y = char_y + font[2];
- if (char_y >= height() - font[2]){
+ if (char_y >= height() - font[2]) {
char_y = 0;
}
line_clear(char_y);
} else {
character(char_x, char_y, value);
- if(auto_up){ copy_to_lcd();}
+ if(auto_up) {
+ copy_to_lcd();
+ }
}
return value;
}
-void ST7565::character(int x, int y, int c){
-unsigned int hor,vert,offset,bpl,j,i,b;
-unsigned char* zeichen;
-unsigned char z,w;
+void ST7565::character(int x, int y, int c)
+{
+ unsigned int hor,vert,offset,bpl,j,i,b;
+ unsigned char* zeichen;
+ unsigned char z,w;
- if ((c < 31) || (c > 127)){ return;} // test char range
+ if ((c < 31) || (c > 127)) {
+ return; // test char range
+ }
// read font parameter from start of array
offset = font[0]; // bytes / char
hor = font[1]; // get hor size of font
vert = font[2]; // get vert size of font
bpl = font[3]; // bytes per line
- if (char_x + hor > width()){
+ if (char_x + hor > width()) {
char_x = 0;
char_y = char_y + vert;
- if (char_y >= height() - font[2]){
+ if (char_y >= height() - font[2]) {
char_y = 0;
}
}
@@ -550,7 +612,7 @@
if(char_x >= (width() - hor)) {
char_x = 0;
char_y = char_y + vert;
- if (char_y >= height() - font[2]){
+ if (char_y >= height() - font[2]) {
char_y = 0;
}
line_clear(char_y);
@@ -558,30 +620,38 @@
//PRINTF("C:%d %d %d %d %d %d\r\n",offset,hor,vert,bpl,char_x,char_y);
}
-void ST7565::set_font(unsigned char* f){
+void ST7565::set_font(unsigned char* f)
+{
font = f;
}
-void ST7565::set_auto_up(unsigned int up){
- if(up){
+void ST7565::set_auto_up(unsigned int up)
+{
+ if(up) {
auto_up = 1;
} else {
auto_up = 0;
}
}
-unsigned int ST7565::get_auto_up(void){
+unsigned int ST7565::get_auto_up(void)
+{
return (auto_up);
}
-void ST7565::print_bm(Bitmap bm, int x, int y){
-int h,v,b;
-char d;
+void ST7565::print_bm(Bitmap bm, int x, int y)
+{
+ int h,v,b;
+ char d;
for(v=0; v < bm.ySize; v++) { // lines
for(h=0; h < bm.xSize; h++) { // pixel
- if(h + x > 127){ break; }
- if(v + y > 31){ break; }
+ if(h + x > 127) {
+ break;
+ }
+ if(v + y > 31) {
+ break;
+ }
d = bm.data[bm.Byte_in_Line * v + ((h & 0xF8) >> 3)];
b = 0x80 >> (h & 0x07);
if((d & b) == 0) {