按K1按键进入设定状态

按K2,依次进入闹钟功能是否启用，闹钟时,分秒,年,月,日及时间时,分,秒的设置,直到退出设置状态

按K3,调整是否起用闹钟和调节闹钟时,分,秒,年,月,日,时间的时,分,秒的数字

LCD第二排中间显示小喇叭，表示启用闹钟功能，无则禁止闹钟功能（可在调整状态进行设置）

正常状态,LCD上排最前面显示自定义字符,LCD下排最前面闪动"RICHMCU"

设置状态,LCD上排最前面显示"P",下排最前面在设置闹钟时间时显示"alarm:",其它状态显示"time"

年代变化2000--2099,星期自动转换-//Set button to enter the state by K1// by K2, turn into the alarm clock feature is enabled, the alarm time, every minute, year, month, day and time, minutes, seconds, set, set up exit status// by K3 , whether the adjustment only use alarm clock and adjust the hours, minutes, seconds, year, month, day, time, hours, minutes, seconds Digital// LCD display the second row of the middle of a small speaker that enable the alarm, no alarm is prohibited (adjustment of status can be set)// normal state, LCD display on the front row of a custom character, LCD flashing under the front row " RICHMCU" // set status, LCD display on the front row " P" , the next row front set the alarm time is displayed in the " alarm:" , other status " time" //　s change 2000--2099, automatic conversion week