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add cursor

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This commit is contained in:
Eggert Jung
2021-05-21 05:47:23 +02:00
parent d9087580b2
commit 470dd2077c
2 changed files with 10 additions and 0 deletions
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9
lcd.c
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@@ -9,6 +9,8 @@
volatile unsigned char char_counter = 0; volatile unsigned char char_counter = 0;
volatile uint8_t lcd_ctrl_reg = 0;
// output data to lcd // output data to lcd
void lcd_out (unsigned char c) { void lcd_out (unsigned char c) {
i2c_start(LCD_I2C_ADDR); i2c_start(LCD_I2C_ADDR);
@@ -60,6 +62,13 @@ void lcd_set_position(uint8_t row, uint8_t col){
char_counter = (row * LCD_WIDTH) + col; char_counter = (row * LCD_WIDTH) + col;
} }
void lcd_cursor(uint8_t en){
if(en)
lcd_nibble_out(0x08 | 0x04 | 0x02, 0);
else
lcd_nibble_out(0x08 | 0x04, 0);
}
//*************************************************************************************** //***************************************************************************************
// clear LCD // clear LCD
void lcd_clear() { void lcd_clear() {

1
lcd.h
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@@ -42,6 +42,7 @@ void lcd_print_str (char *str);
void lcd_write_P (const char *Buffer,...); void lcd_write_P (const char *Buffer,...);
void lcd_set_position(uint8_t row, uint8_t col); void lcd_set_position(uint8_t row, uint8_t col);
void lcd_cursor(uint8_t en);
#define lcd_write(format, args...) lcd_write_P(PSTR(format) , ## args) #define lcd_write(format, args...) lcd_write_P(PSTR(format) , ## args)