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V2.06

pull/13/head
ArjanteMarvelde 2021-12-15 19:57:23 +01:00
rodzic 1541a8ebe7
commit 4d1ebf211c
1 zmienionych plików z 19 dodań i 13 usunięć
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32
lcd.c
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@ -44,14 +44,14 @@
/** User selectable definitions **/
// Set I2C address
#define I2C_LCD 0x27
//#define I2C_LCD 0x3E
//#define I2C_LCD 0x27
#define I2C_LCD 0x3E
// Select LCD type matching your HW
#define LCD_1804 0 // Seeed / Grove
#define LCD_8574_ADA 1 // Adafruit I2C backpack
#define LCD_8574_GEN 2 // Generic I2C backpack
#define LCD_TYPE LCD_8574_GEN
#define LCD_TYPE LCD_1804
/** HD44780 interface **/
@ -99,6 +99,7 @@
#define LCD_DATA 0x40
#define LCD_INIT_1804 (LCD_FUNCTIONSET | LCD_8BITMODE | LCD_2LINE | LCD_5x8DOTS)
// 8574-based specific bitmasks
#define LCD_COMMAND_ADA 0x00
#define LCD_DATA_ADA 0x02
@ -113,10 +114,13 @@
#define LCD_INIT_GEN (LCD_FUNCTIONSET | LCD_4BITMODE | LCD_2LINE | LCD_5x8DOTS)
#if (LCD_TYPE == LCD_1804)
#define LCD_START LCD_INIT_1804
#define LCD_INIT_FUNCTION LCD_INIT_1804
#elif (LCD_TYPE == LCD_8574_ADA)
#define LCD_START 0x30
#define LCD_INIT_FUNCTION LCD_INIT_ADA
#elif (LCD_TYPE == LCD_8574_GEN)
#define LCD_START 0x30
#define LCD_INIT_FUNCTION LCD_INIT_GEN
#endif
@ -205,22 +209,30 @@ void lcd_init(void)
uint8_t i;
/* HD44780 start sequence */
sleep_ms(200);
i = 0x30;
sleep_ms(500);
i = LCD_START;
lcd_sendbyte(true, i);
sleep_us(4100);
sleep_us(4500);
lcd_sendbyte(true, i);
sleep_us(100);
lcd_sendbyte(true, i);
/* Initialize function set */
lcd_sendbyte(true, LCD_INIT_FUNCTION);
/* Initialize display control */
lcd_sendbyte(true, LCD_DISPLAYCONTROL | LCD_DISPLAYOFF | LCD_CURSOROFF | LCD_BLINKOFF);
lcd_sendbyte(true, LCD_DISPLAYCONTROL | LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF);
/* Initialize entry mode set */
lcd_sendbyte(true, LCD_ENTRYMODESET | LCD_ENTRYINC | LCD_ENTRYNOSHIFT);
/* Initialize display */
// lcd_sendbyte(true, LCD_DISPLAYCONTROL | LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF);
lcd_sendbyte(true, LCD_CLEARDISPLAY);
sleep_ms(2);
lcd_sendbyte(true, LCD_RETURNHOME);
sleep_ms(2);
/* Load CGRAM */
for (i=0; i<8; i++)
{
@ -229,12 +241,6 @@ void lcd_init(void)
lcd_sendbyte(false, cgram[i][j]); // One byte at a time
}
/* Initialize display control */
lcd_sendbyte(true, LCD_DISPLAYCONTROL | LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF);
lcd_sendbyte(true, LCD_CLEARDISPLAY);
sleep_ms(2);
lcd_sendbyte(true, LCD_RETURNHOME);
sleep_ms(2);
}
void lcd_clear(void)