static void lcd_write(int fd, uint8_t cmd, uint8_t mode /*=0*/) { lcd_write_four_bits(fd, mode | (cmd & 0xF0)); lcd_write_four_bits(fd, mode | ((cmd << 4) & 0xF0)); }
// write a command to lcd void LCD::lcd_write(int cmd, int mode) { lcd_write_four_bits(mode | (cmd & 0xF0)); lcd_write_four_bits(mode | ((cmd << 4) & 0xF0)); }