奋斗多日，开发板的串口程序下载终于搞定了，再看时间已是凌晨4点了！
在HC32L136开发板上配有一个笔段式的液晶屏，但无奈的是厂家却没提供一个能直接调用的显示函数。 在没解决该显示屏的显示函数前，先以轻车熟路的OLED屏来实现显示的问题。 由于手头的OLED屏是一款I2C接口的单色显示屏，故另其与MCU的连接关系为： PA11：SCL PA12：SDA 使这2个引脚输出高低电平的语句定义为： #define OLED_SCLK_Set() Gpio_SetIO(GpioPortA, GpioPin11) #define OLED_SCLK_Clr() Gpio_ClrIO(GpioPortA, GpioPin11); #define OLED_SDIN_Set() Gpio_SetIO(GpioPortA, GpioPin12) #define OLED_SDIN_Clr() Gpio_ClrIO(GpioPortA, GpioPin12); 分配2个引脚为输出功能的函数为： void App_OledInit(void)
{
stc_gpio_cfg_t stcGpioCfg;
///< 打开GPIO外设时钟门控
Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE);
///< 端口方向配置->输出(其它参数与以上（输入）配置参数一致)
stcGpioCfg.enDir = GpioDirOut;
///< 端口上下拉配置->下拉
stcGpioCfg.enPu = GpioPuDisable;
stcGpioCfg.enPd = GpioPdEnable;
///< GPIO IO OLED端口初始化
Gpio_Init(GpioPortA, GpioPin11, &stcGpioCfg);
Gpio_Init(GpioPortA, GpioPin12, &stcGpioCfg);
}
实现图1显示效果的主程序为： int32_t main(void)
{
stc_rtc_time_t readtime;
Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio,TRUE); //GPIO外设时钟打开
Sysctrl_SetPeripheralGate(SysctrlPeripheralRtc,TRUE); //RTC模块时钟打开
Sysctrl_ClkSourceEnable(SysctrlClkRCL, TRUE);
RTC_Cfg(); //配置RTC
EnableNvic(RTC_IRQn, IrqLevel3, TRUE); //使能RTC中断向量
Rtc_Cmd(TRUE); //使能RTC开始计数
App_OledInit();
OLED_Init();
OLED_Clear();
OLED_ShowString(0,0,"HC32L136 TEST",16);
OLED_ShowString(0,2,"OLED DISPLAY",16);
while (1);
}
图1 OLED屏显示效果 实现RTC时间设置的函数为： void RTC_Cfg(void)
{
stc_rtc_initstruct_t RtcInitStruct;
RtcInitStruct.rtcAmpm = RtcPm; //12小时制
RtcInitStruct.rtcClksrc = RtcClkRcl; //内部低速时钟
RtcInitStruct.rtcPrdsel.rtcPrdsel = RtcPrds; //周期中断类型PRDS
RtcInitStruct.rtcPrdsel.rtcPrds = Rtc1S; //周期中断事件间隔
RtcInitStruct.rtcTime.u8Second = 0x55;
RtcInitStruct.rtcTime.u8Minute = 0x55;
RtcInitStruct.rtcTime.u8Hour = 0x10;
RtcInitStruct.rtcTime.u8Day = 0x06;
RtcInitStruct.rtcTime.u8DayOfWeek = 0x04;
RtcInitStruct.rtcTime.u8Month = 0x10;
RtcInitStruct.rtcTime.u8Year = 0x20;
RtcInitStruct.rtcCompen = RtcCompenEnable;
RtcInitStruct.rtcCompValue = 0;//补偿值根据实际情况进行补偿
Rtc_Init(&RtcInitStruct);
Rtc_AlmIeCmd(TRUE); //使能闹钟中断
}
实现图3 RTC计时效果的主程序为： int32_t main(void)
{
stc_rtc_time_t readtime;
Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio,TRUE); //GPIO外设时钟打开
Sysctrl_SetPeripheralGate(SysctrlPeripheralRtc,TRUE); //RTC模块时钟打开
Sysctrl_ClkSourceEnable(SysctrlClkRCL, TRUE);
RTC_Cfg(); //配置RTC
EnableNvic(RTC_IRQn, IrqLevel3, TRUE); //使能RTC中断向量
Rtc_Cmd(TRUE); //使能RTC开始计数
App_OledInit();
OLED_Init();
OLED_Clear();
OLED_ShowString(0,0,"HC32L136 TEST",16);
OLED_ShowString(0,2,"OLED & RTC",16);
delay1ms(2000);
OLED_Clear();
OLED_ShowString(0,0,"20 - -",16);
OLED_ShowString(0,2," : :",16);
while (1)
{
if(flag == 1)
{
flag = 0;
Rtc_ReadDateTime(&readtime);
second = readtime.u8Second;
minute = readtime.u8Minute;
hour = readtime.u8Hour;
day = readtime.u8Day;
week = readtime.u8DayOfWeek;
month = readtime.u8Month;
year = readtime.u8Year;
OLED_ShowNum(16,0,year/16*10+year%16,2,16);
OLED_ShowNum(40,0,month/16*10+month%16,2,16);
OLED_ShowNum(64,0,day/16*10+day%16,2,16);
OLED_ShowNum(16,2,hour/16*10+hour%16,2,16);
OLED_ShowNum(40,2,minute/16*10+minute%16,2,16);
OLED_ShowNum(64,2,second/16*10+second%16,2,16);
}
}
}
图2 RTC起始界面
图3 RTC计时效果
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