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Merge pull request #48 from penfold42/128x32 

Ssd1306 128x32 support
This commit is contained in:
Stephen White 2018-07-26 22:42:17 +10:00 committed by GitHub
parent 5fda5024f7 2f023ab756
commit 369e2ff800
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 71 additions and 34 deletions
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43
src/SSD1306.cpp
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@ -27,12 +27,14 @@ extern "C"
unsigned char frame[SSD1306_128x64_BYTES];
SSD1306::SSD1306(int BSCMaster, u8 address, int flip, int type)
SSD1306::SSD1306(int BSCMaster, u8 address, unsigned width, unsigned height, int flip, LCD_MODEL type)
: BSCMaster(BSCMaster)
, address(address)
, type(type)
, flip(flip)
, contrast(127)
, width(width)
, height(height)
{
RPI_I2CInit(BSCMaster, 1);
@ -45,7 +47,7 @@ void SSD1306::InitHardware()
SendCommand(SSD1306_CMD_DISPLAY_OFF); // 0xAE
SendCommand(SSD1306_CMD_MULTIPLEX_RATIO); // 0xA8
SendCommand(0x3F); // SSD1306_LCDHEIGHT - 1
SendCommand(height-1); // SSD1306_LCDHEIGHT - 1
SendCommand(SSD1306_CMD_SET_DISPLAY_OFFSET); // 0xD3 Vertical scroll position
SendCommand(0x00); // no Offset
@ -61,7 +63,10 @@ void SSD1306::InitHardware()
}
SendCommand(SSD1306_CMD_SET_COM_PINS); // 0xDA Layout and direction
SendCommand(0x12);
if (type == LCD_1306_128x32)
SendCommand(0x02);
else
SendCommand(0x12);
SetContrast(GetContrast());
@ -86,7 +91,7 @@ void SSD1306::InitHardware()
Home();
if (type != 1106)
if (type != LCD_1106_128x64)
SendCommand(SSD1306_CMD_DEACTIVATE_SCROLL); // 0x2E
}
@ -115,23 +120,23 @@ void SSD1306::Home()
MoveCursorByte(0, 0);
}
void SSD1306::MoveCursorByte(u8 row, u8 col)
void SSD1306::MoveCursorByte(u8 page, u8 col)
{
if (col > 127) { col = 127; }
if (row > 7) { row = 7; }
if (col > width-1) { col = width-1; }
if (page > height/8-1) { page = height/8-1; }
if (type == 1106)
if (type == LCD_1106_128x64)
col += 2; // sh1106 uses columns 2..129
SendCommand(SSD1306_CMD_SET_PAGE | row); // 0xB0 page address
SendCommand(SSD1306_CMD_SET_PAGE | page); // 0xB0 page address
SendCommand(SSD1306_CMD_SET_COLUMN_LOW | (col & 0xf)); // 0x00 column address lower bits
SendCommand(SSD1306_CMD_SET_COLUMN_HIGH | (col >> 4)); // 0x10 column address upper bits
}
void SSD1306::RefreshScreen()
{
int i;
for (i = 0; i < 8; i++)
unsigned i;
for (i = 0; i < height/8; i++)
{
RefreshPage(i);
}
@ -151,9 +156,19 @@ void SSD1306::RefreshRows(u32 start, u32 amountOfRows)
void SSD1306::RefreshPage(u32 page)
{
if (page >= height/8)
return;
// x32 displays use lower half (pages 2 and 3)
if (type == LCD_1306_128x32)
{
page = page+4; // 0,1,2,3 -> 4,5,6,7
page = page%4; // and wrap it so 4,5 -> 0,1
}
int i;
int start = page*128;
int end = page*128 + 128;
int start = page*width;
int end = start + width;
MoveCursorByte(page, 0);
for (i = start; i < end; i++)
@ -183,7 +198,7 @@ void SSD1306::SetContrast(u8 value)
contrast = value;
SendCommand(SSD1306_CMD_SET_CONTRAST_CONTROL);
SendCommand(value);
if (type == 1306)
if (type != LCD_1106_128x64) // dont fiddle vcomdeselect on 1106 displays
SetVCOMDeselect( value >> 8);
}

4
src/SSD1306.h
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@ -76,7 +76,7 @@ class SSD1306
public:
// 128x32 0x3C
// 128x64 0x3D or 0x3C (if SA0 is grounded)
SSD1306(int BSCMaster = 1, u8 address = 0x3C, int flip = 0, int type=1306);
SSD1306(int BSCMaster = 1, u8 address = 0x3C, unsigned width = 128, unsigned height = 64, int flip = 0, LCD_MODEL type=LCD_UNKNOWN);
void PlotCharacter(int x, int y, char ascii, bool inverse);
void PlotText(int x, int y, char* str, bool inverse);
@ -110,6 +110,8 @@ protected:
int type;
int flip;
int contrast;
unsigned width;
unsigned height;
};
#endif

8
src/ScreenLCD.cpp
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@ -23,14 +23,14 @@
#include "debug.h"
#include "ssd_logo.h"
void ScreenLCD::Open(u32 widthDesired, u32 heightDesired, u32 colourDepth, int BSCMaster, int LCDAddress, int LCDFlip, int LCDType)
void ScreenLCD::Open(u32 widthDesired, u32 heightDesired, u32 colourDepth, int BSCMaster, int LCDAddress, int LCDFlip, LCD_MODEL LCDType)
{
bpp = 1;
if (widthDesired < 128)
widthDesired = 128;
if (heightDesired < 64)
heightDesired = 64;
if (heightDesired < 32)
heightDesired = 32;
if (widthDesired > 128)
widthDesired = 128;
if (heightDesired > 64)
@ -39,7 +39,7 @@ void ScreenLCD::Open(u32 widthDesired, u32 heightDesired, u32 colourDepth, int B
width = widthDesired;
height = heightDesired;
ssd1306 = new SSD1306(BSCMaster, LCDAddress, LCDFlip, LCDType);
ssd1306 = new SSD1306(BSCMaster, LCDAddress, width, height, LCDFlip, LCDType);
ssd1306->ClearScreen();
ssd1306->RefreshScreen();
ssd1306->DisplayOn();

3
src/ScreenLCD.h
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@ -21,6 +21,7 @@
#include "ScreenBase.h"
#include "SSD1306.h"
#include "options.h"
class ScreenLCD : public ScreenBase
{
@ -32,7 +33,7 @@ public:
{
}
void Open(u32 width, u32 height, u32 colourDepth, int BSCMaster, int LCDAddress, int LCDFlip, int LCDType);
void Open(u32 width, u32 height, u32 colourDepth, int BSCMaster, int LCDAddress, int LCDFlip, LCD_MODEL LCDType);
void ClearArea(u32 x1, u32 y1, u32 x2, u32 y2, RGBA colour);
void Clear(RGBA colour);

22
src/main.cpp
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@ -365,26 +365,30 @@ void InitialiseLCD()
int i2cLcdOnContrast = options.I2CLcdOnContrast();
int i2cLcdDimContrast = options.I2CLcdDimContrast();
int i2cLcdDimTime = options.I2CLcdDimTime();
int i2cLcdModel = options.I2CLcdModel();
LCD_MODEL i2cLcdModel = options.I2CLcdModel();
if (i2cLcdModel)
{
int width = 128;
int height = 64;
if (i2cLcdModel == LCD_1306_128x32)
height = 32;
screenLCD = new ScreenLCD();
screenLCD->Open(128, 64, 1, i2cBusMaster, i2cLcdAddress, i2cLcdFlip, i2cLcdModel);
screenLCD->Open(width, height, 1, i2cBusMaster, i2cLcdAddress, i2cLcdFlip, i2cLcdModel);
screenLCD->SetContrast(i2cLcdOnContrast);
screenLCD->ClearInit(0); // sh1106 needs this
bool logo_done = false;
if (strcasecmp(options.GetLcdLogoName(), "1541ii") == 0)
if ( (height == 64) && (strcasecmp(options.GetLcdLogoName(), "1541ii") == 0) )
{
screenLCD->PlotRawImage(logo_ssd_1541ii, 0, 0, 128, 64);
screenLCD->PlotRawImage(logo_ssd_1541ii, 0, 0, width, height);
snprintf(tempBuffer, tempBufferSize, "Pi1541 V%d.%02d", versionMajor, versionMinor);
screenLCD->PrintText(0, 16, 0, tempBuffer, 0xffffffff);
logo_done = true;
}
else if (strcasecmp(options.GetLcdLogoName(), "1541classic") == 0)
else if (( height == 64) && (strcasecmp(options.GetLcdLogoName(), "1541classic") == 0) )
{
screenLCD->PlotRawImage(logo_ssd_1541classic, 0, 0, 128, 64);
screenLCD->PlotRawImage(logo_ssd_1541classic, 0, 0, width, height);
logo_done = true;
}
else if (f_stat(options.GetLcdLogoName(), &filLcdIcon) == FR_OK && filLcdIcon.fsize <= LCD_LOGO_MAX_SIZE)
@ -398,7 +402,7 @@ void InitialiseLCD()
u32 bytesRead;
f_read(&fp, LcdLogoFile, LCD_LOGO_MAX_SIZE, &bytesRead);
f_close(&fp);
screenLCD->PlotRawImage(LcdLogoFile, 0, 0, 128, 64);
screenLCD->PlotRawImage(LcdLogoFile, 0, 0, width, height);
logo_done = true;
}
}
@ -406,8 +410,8 @@ void InitialiseLCD()
if (!logo_done)
{
snprintf(tempBuffer, tempBufferSize, "Pi1541 V%d.%02d", versionMajor, versionMinor);
int x = (128 - 8*strlen(tempBuffer) ) /2;
int y = (64-16)/2;
int x = (width - 8*strlen(tempBuffer) ) /2;
int y = (height-16)/2;
screenLCD->PrintText(0, x, y, tempBuffer, 0x0);
}
screenLCD->RefreshScreen();

8
src/options.cpp
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@ -145,7 +145,7 @@ Options::Options(void)
, i2cScan(0)
, i2cLcdFlip(0)
, i2cLcdOnContrast(127)
, i2cLcdModel(0)
, i2cLcdModel(LCD_UNKNOWN)
, scrollHighlightRate(0.125f)
, keyboardBrowseLCDScreen(0)
{
@ -241,9 +241,11 @@ void Options::Process(char* buffer)
{
strncpy(LCDName, pValue, 255);
if (strcasecmp(pValue, "ssd1306_128x64") == 0)
i2cLcdModel = 1306;
i2cLcdModel = LCD_1306_128x64;
else if (strcasecmp(pValue, "ssd1306_128x32") == 0)
i2cLcdModel = LCD_1306_128x32;
else if (strcasecmp(pValue, "sh1106_128x64") == 0)
i2cLcdModel = 1106;
i2cLcdModel = LCD_1106_128x64;
}
else if ((strcasecmp(pOption, "ROM") == 0) || (strcasecmp(pOption, "ROM1") == 0))

7
src/options.h
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@ -19,6 +19,8 @@
#ifndef OPTIONS_H
#define OPTIONS_H
#include "types.h"
class TextParser
{
public:
@ -77,7 +79,7 @@ public:
inline unsigned int I2CLcdOnContrast() const { return i2cLcdOnContrast; }
inline unsigned int I2CLcdDimContrast() const { return i2cLcdDimContrast; }
inline unsigned int I2CLcdDimTime() const { return i2cLcdDimTime; }
inline unsigned int I2CLcdModel() const { return i2cLcdModel; }
inline LCD_MODEL I2CLcdModel() const { return i2cLcdModel; }
inline const char* GetLcdLogoName() const { return LcdLogoName; }
@ -123,7 +125,8 @@ private:
unsigned int i2cLcdOnContrast;
unsigned int i2cLcdDimContrast;
unsigned int i2cLcdDimTime;
unsigned int i2cLcdModel;
// unsigned int i2cLcdModel;
LCD_MODEL i2cLcdModel = LCD_UNKNOWN;
float scrollHighlightRate;

4
src/stb_image.h
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@ -892,12 +892,14 @@ static int stbi__mad3sizes_valid(int a, int b, int c, int add)
stbi__addsizes_valid(a*b*c, add);
}
#ifndef STBI_NO_LINEAR
// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow
static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add)
{
return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) &&
stbi__mul2sizes_valid(a*b*c, d) && stbi__addsizes_valid(a*b*c*d, add);
}
#endif
// mallocs with size overflow checking
static void *stbi__malloc_mad2(int a, int b, int add)
@ -912,11 +914,13 @@ static void *stbi__malloc_mad3(int a, int b, int c, int add)
return stbi__malloc(a*b*c + add);
}
#ifndef STBI_NO_LINEAR
static void *stbi__malloc_mad4(int a, int b, int c, int d, int add)
{
if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL;
return stbi__malloc(a*b*c*d + add);
}
#endif
// stbi__err - error
// stbi__errpf - error returning pointer to float

6
src/types.h
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@ -9,5 +9,11 @@ typedef unsigned long long u64;
typedef signed long long s64;
typedef enum {
LCD_UNKNOWN,
LCD_1306_128x64,
LCD_1306_128x32,
LCD_1106_128x64,
} LCD_MODEL;
#endif