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Jhd1313m1: add basic scroll functionality

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll 2014-07-14 15:25:12 +01:00
parent 00170bea97
commit 731704eaac
3 changed files with 14 additions and 0 deletions
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5
src/lcd/i2clcd.h
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@ -55,6 +55,11 @@ namespace upm {
#define LCD_BLINKON 0x01
#define LCD_BLINKOFF 0x00
// flags for display/cursor shift
#define LCD_DISPLAYMOVE 0x08
#define LCD_MOVERIGHT 0x04
#define LCD_MOVELEFT 0x00
// flags for function set
#define LCD_8BITMODE 0x10
#define LCD_4BITMODE 0x00

8
src/lcd/jhd1313m1.cxx
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@ -84,6 +84,14 @@ Jhd1313m1::setColor(uint8_t r, uint8_t g, uint8_t b)
return MRAA_SUCCESS;
}
mraa_result_t
Jhd1313m1::scroll(bool direction)
{
if (direction)
return i2Cmd (m_i2c_lcd_control, (LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT));
return i2Cmd (m_i2c_lcd_control, (LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT));
}
/*
* **************
* virtual area

1
src/lcd/jhd1313m1.h
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@ -37,6 +37,7 @@ class Jhd1313m1 : public I2CLcd {
mraa_result_t setCursor (int row, int column);
mraa_result_t clear ();
mraa_result_t home ();
mraa_result_t scroll (bool direction);
private:
int m_rgb_address;