STM8L152让LCD显示需要设置哪些东西

只看该作者 · 2010-12-7 16:45

STM8L152让LCD显示需要设置哪些东西？我把LCD控制器的寄存器全部一一设置了还是没显示，郁闷了

只看该作者 · 2010-12-7 17:20

void LCD_GLASS_Init(void)
{
  /*
The LCD is configured as follow:
   - clock source = LSE (32.768 KHz)
   - Voltage source = Internal
   - Prescaler = 2
   - Divider = 18 (16 + 2)
   - Mode = 1/4 Duty, 1/3 Bias
   - LCD frequency = (clock source * Duty) / (Prescaler * Divider)
                  = 228 Hz ==> Frame frequency = 57 Hz */

CLK_PCKENR2 |= 0x08; // Enable LCD clock
CLK_CRTCR = 0x22; // Set HSI as LCD clock and it is divided by 2

// Initialize the LCD
LCD_FRQ = LCD_Prescaler_64; // Set the prescaler as ClKinput/2
LCD_FRQ |= LCD_Divider_18; // Set the divider as CLKprescaler/18
LCD_CR1 = LCD_Duty_1_4; // Set the duty as 1/4 duty
LCD_CR1 |= LCD_Bias_1_3; // Set the bias as 1/3 bias
LCD_CR2 = LCD_VoltageSource_Internal;// Set Internal voltage source for LCD

// Mask register
LCD_PM0 = 0xFF;
LCD_PM1 = 0x3F;
LCD_PM2 = 0xFF;
LCD_PM3 = 0xFF;

LCD_CR2 |= LCD_Contrast_3V3; // Select the maximum voltage value Vlcd

LCD_CR3 |= LCD_DeadTime_0; // Srt the dead time
LCD_CR2 |= LCD_PulseOnDuration_6; // Set the pulses on duration

LCD_CR3 |= LCD_CR3_LCDEN; // Enable the LCD peripheral
}