STM8L152R8段式LCD 8com口32seg 1/4偏压COM口没有波型

只看该作者 · 2013-7-26 15:28

本帖最后由 weiweiwsk 于 2013-7-26 15:53 编辑

初用STM8,根据官网上的例子还有网上的一些资料段式液晶驱动流程都差不多,我也是用库函数来驱动的,不知道是不是硬件有问题,只接了一个32768的晶振,另外屏的引脚比较多,因此走线也相对长了点,最长的大概有个5cm.
程序如下:
(时钟部分初始化,官网例子里有这部分)
CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE);
RTC_DeInit();
RTC_WakeUpClockConfig(RTC_WakeUpClock_RTCCLK_Div16);
RTC_SetWakeUpCounter(0x400);
RTC_ITConfig(RTC_IT_WUT, ENABLE);
TimingDelay_Init();
(LCD初始化部分,下面的是详细内容)
LCD_GLASS_Init();

CLK_PeripheralClockConfig(CLK_Peripheral_LCD, ENABLE);
  CLK_RTCClockConfig(CLK_RTCCLKSource_LSE, CLK_RTCCLKDiv_1);

  LCD_Init(LCD_Prescaler_2, LCD_Divider_18, LCD_Duty_1_8,
         LCD_Bias_1_4, LCD_VoltageSource_Internal);

seg脚全部配上了,有些没有用上
  LCD_PortMaskConfig(LCD_PortMaskRegister_0, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_1, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_2, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_3, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_4, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_5, 0xFF);

  LCD_ContrastConfig(LCD_Contrast_Level_7);
  LCD_DeadTimeConfig(LCD_DeadTime_0);
  LCD_PulseOnDurationConfig(LCD_PulseOnDuration_1);

  LCD_Cmd(ENABLE);

然后就是往RAM里写数据了
while (1)
{
            LCD_WriteRAM(LCD_RAMRegister_0,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_1,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_2,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_3,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_4,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_5,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_6,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_7,0xFF);
}

但COM口一直没有波型,也没有电压,弄了几天了,求帮助!

1万 · 2013-7-26 15:43

COM口一直没有波型，那SEGMENT呢？

1万 · 2013-7-26 15:52

没有波形是什么意思？没有信号么？

只看该作者 · 2013-7-26 15:58

IJK 发表于 2013-7-26 15:43
COM口一直没有波型，那SEGMENT呢？

SEGMENT脚也是一样,没有波型,也没有电压,现在正在调试,下面是程序
void main(void)
{
      SYS_CLK_Configuration();
      LCD_Configuration();
      while (1)
      {
            LCD_WriteRAM(LCD_RAMRegister_0,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_1,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_2,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_3,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_4,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_5,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_6,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_7,0xFF);
      }
}
void SYS_CLK_Configuration(void)
{
  //使能系统时钟切换
  CLK_SYSCLKSourceSwitchCmd(ENABLE);
  CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);

  CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_2);

  while (CLK_GetSYSCLKSource() != CLK_SYSCLKSource_HSI)
      {

      }
  CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE);
}

void LCD_Configuration(void)
{
  CLK_PeripheralClockConfig(CLK_Peripheral_LCD, ENABLE);
  CLK_RTCClockConfig(CLK_RTCCLKSource_LSE, CLK_RTCCLKDiv_1);

  LCD_Init(LCD_Prescaler_2, LCD_Divider_18, LCD_Duty_1_8,
         LCD_Bias_1_4, LCD_VoltageSource_Internal);

  LCD_PortMaskConfig(LCD_PortMaskRegister_0, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_1, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_2, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_3, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_4, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_5, 0xFF);

  LCD_ContrastConfig(LCD_Contrast_Level_7);
  LCD_DeadTimeConfig(LCD_DeadTime_0);
  LCD_PulseOnDurationConfig(LCD_PulseOnDuration_1);

  LCD_Cmd(ENABLE);
}

只看该作者 · 2013-7-26 15:59

outstanding 发表于 2013-7-26 15:52
没有波形是什么意思？没有信号么？

嗯,没有信号

1万 · 2013-7-26 16:01

0 或 1都没有，那就是完全没有驱动了

只看该作者 · 2013-7-26 16:06

outstanding 发表于 2013-7-26 16:01
0 或 1都没有，那就是完全没有驱动了

也奇怪了,之前调串口都可以通信,后来LCD一直不出来,现在专门弄LCD了,4楼贴了程序,帮忙看看有没有问题!

1万 · 2013-7-26 16:11

weiweiwsk 发表于 2013-7-26 16:06
也奇怪了,之前调串口都可以通信,后来LCD一直不出来,现在专门弄LCD了,4楼贴了程序,帮忙看看有没有问题! ...

seg脚全部配上了,有些没有用上
  LCD_PortMaskConfig(LCD_PortMaskRegister_0, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_1, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_2, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_3, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_4, 0xFF);
  LCD_PortMaskConfig(LCD_PortMaskRegister_5, 0xFF);

while (1)
{
            LCD_WriteRAM(LCD_RAMRegister_0,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_1,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_2,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_3,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_4,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_5,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_6,0xFF);
            LCD_WriteRAM(LCD_RAMRegister_7,0xFF);
}
不是差不多么？我不清楚，猜测的，我没有玩过。至少要上电路图部分，不然怎么知道 com和段的关系。