void
lcd_contrast(uint8_t hb)
{
uint8_t contrast = erb((uint8_t*)EE_CONTRAST);
if(hb == 0xFE) {
contrast--;
} else if (hb == 0xFD) {
contrast++;
} else if (hb == 0xFC) {
//keep the eeprom value
} else {
contrast = hb;
}
if(contrast < 40) contrast = 40;
if(contrast > 80) contrast = 80;
ewb((uint8_t*)EE_CONTRAST, contrast);
lcd_sendcmd (LCD_CMD_SETCON);
lcd_senddata (contrast);
DS_P( PSTR("Contrast:") );
DU(100-(contrast-40)*100/40, 3);
DC('%');
DNL();
}
void lcd_write_cmdordata(COM_STATUS bank, unsigned char cCmd, int oprand)
{
rt_uint8_t value = cCmd | oprand;
GPIO_ResetBits(lcd_gpio_ctrl,lcd_CSB);
if(bank)
{
GPIO_SetBits(lcd_gpio_ctrl,lcd_A0);
}
else
{
GPIO_ResetBits(lcd_gpio_ctrl,lcd_A0);
}
lcd_senddata(value);
GPIO_SetBits(lcd_gpio_ctrl ,lcd_CSB);
}