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Move to page mode to support sh1106

This commit is contained in:
penfold42 2018-07-16 21:11:55 +10:00
parent 30f1d4747e
commit e34274c01e
3 changed files with 47 additions and 30 deletions
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72
src/SSD1306.cpp
View File

@ -65,28 +65,30 @@ void SSD1306::InitHardware()
SetContrast(GetContrast());
SendCommand(SSD1306_CMD_ENTIRE_DISPLAY_ON);
SendCommand(SSD1306_CMD_ENTIRE_DISPLAY_ON); // 0xA4 - DONT force entire display on
SendCommand(SSD1306_CMD_NORMAL_DISPLAY); // 0xA6 = non inverted
SendCommand(SSD1306_CMD_SET_PRE_CHARGE_PERIOD); // 0xD9
SendCommand(0xF1);
SendCommand(SSD1306_CMD_SET_VCOMH_DESELECT_LEVEL);
SendCommand(SSD1306_CMD_SET_VCOMH_DESELECT_LEVEL); // 0xDB
SendCommand(0x40);
SendCommand(SSD1306_CMD_SET_DISPLAY_CLOCK_DIVIDE_RATIO);
SendCommand(SSD1306_CMD_SET_DISPLAY_CLOCK_DIVIDE_RATIO); // 0xD5
SendCommand(0x80); // upper nibble is rate, lower nibble is divisor
SendCommand(SSD1306_ENABLE_CHARGE_PUMP); // Enable charge pump regulator
SendCommand(SSD1306_ENABLE_CHARGE_PUMP); // 0x8D Enable charge pump regulator
SendCommand(0x14); // external = 0x10 internal = 0x14
SendCommand(SSD1306_CMD_SET_MEMORY_ADDRESSING_MODE); // Set Memory Addressing Mode
SendCommand(0x00); // 00 - Horizontal Addressing Mode
SendCommand(SSD1306_CMD_SET_MEMORY_ADDRESSING_MODE); // 0x20 Set Memory Addressing Mode
// SendCommand(0x00); // 00 - Horizontal Addressing Mode
SendCommand(0x10); // 10 - Page Addressing Mode for SH1106 compatibility
Home();
SendCommand(SSD1306_CMD_DEACTIVATE_SCROLL);
if (type != 1106)
SendCommand(SSD1306_CMD_DEACTIVATE_SCROLL); // 0x2E
}
void SSD1306::SendCommand(u8 command)
@ -120,9 +122,11 @@ void SSD1306::MoveCursorByte(u8 row, u8 col)
if (row > 7) { row = 7; }
if (type == 1106)
SetDisplayWindow(col+2, 129, row, 7); // sh1106 has 132x64 ram, display is centreed
else
SetDisplayWindow(col+0, 127, row, 7);
col += 2;
SendCommand(0xB0 + row); // page address
SendCommand(0x00 | (col & 0xf)); // column address lower bits
SendCommand(0x10 | (col >> 4)); // column address upper bits
}
void SSD1306::MoveCursorCharacter(u8 row, u8 col)
@ -136,13 +140,25 @@ void SSD1306::MoveCursorCharacter(u8 row, u8 col)
void SSD1306::RefreshScreen()
{
int i;
Home();
for (i = 0; i < SSD1306_128x64_BYTES; i++)
for (i = 0; i < 8; i++)
{
SendData(frame[i]);
RefreshPage(i);
}
}
/*
void SSD1306::RefreshRows(u32 start, u32 numRows)
{
start <<=1;
numRows <<=1;
int i;
for (i = start; i < numRows; i++)
{
RefreshPage(i);
}
}
*/
void SSD1306::RefreshRows(u32 start, u32 amountOfRows)
{
int i;
@ -160,6 +176,19 @@ void SSD1306::RefreshRows(u32 start, u32 amountOfRows)
SendData(frame[i]);
}
}
void SSD1306::RefreshPage(u32 page)
{
MoveCursorByte(page, 0);
int i;
int start = page*128;
int end = page*128 + 128;
for (i = start; i < end; i++)
{
SendData(frame[i]);
}
}
void SSD1306::ClearScreen()
{
@ -169,14 +198,12 @@ void SSD1306::ClearScreen()
void SSD1306::DisplayOn()
{
SendCommand(SSD1306_CMD_DISPLAY_ON);
ClearScreen();
SendCommand(SSD1306_CMD_DISPLAY_ON); // 0xAF
}
void SSD1306::DisplayOff()
{
ClearScreen();
SendCommand(SSD1306_CMD_DISPLAY_OFF);
SendCommand(SSD1306_CMD_DISPLAY_OFF); // 0xAE
}
void SSD1306::SetContrast(u8 value)
@ -193,17 +220,6 @@ void SSD1306::SetVCOMDeselect(u8 value)
SendCommand( (value & 7) << 4 );
}
void SSD1306::SetDisplayWindow(u8 x1, u8 x2, u8 y1, u8 y2)
{
SendCommand(SSD1306_CMD_SET_COLUMN_ADDRESS); // 0x21 Set Column Address (only for horizontal or vertical mode)
SendCommand(x1); // start 0
SendCommand(x2); // end 127
SendCommand(SSD1306_CMD_SET_PAGE_ADDRESS); // 0x22
SendCommand(y1); // start 0
SendCommand(y2); // end 7 (so 8 vertical bytes == 64 row display)
}
void SSD1306::Plottext(int x, int y, char* str, bool inverse)
{
int i;

1
src/SSD1306.h
View File

@ -90,6 +90,7 @@ public:
void ClearScreen();
void RefreshScreen();
void RefreshPage(u32 page);
void RefreshRows(u32 start, u32 amountOfRows);
void SetDisplayWindow(u8 x1, u8 y1, u8 x2, u8 y2);
void PlotPixel(int x, int y, int c);

4
src/ScreenLCD.cpp
View File

@ -40,9 +40,9 @@ void ScreenLCD::Open(u32 widthDesired, u32 heightDesired, u32 colourDepth, int B
height = heightDesired;
ssd1306 = new SSD1306(BSCMaster, LCDAddress, LCDFlip, LCDType);
ssd1306->DisplayOn();
ssd1306->ClearScreen();
ssd1306->RefreshScreen();
ssd1306->DisplayOn();
opened = true;
}