MSP430單片機(jī)試驗(yàn)報(bào)告

1、MSP430單片機(jī)實(shí)驗(yàn)報(bào)告專業(yè):姓名：學(xué)號：MSP430單片機(jī)實(shí)驗(yàn)報(bào)告設(shè)計(jì)目標(biāo)：使8位數(shù)碼管顯示“ 5202114. ,深入了解串行數(shù)據(jù)接口.實(shí)現(xiàn)過程：主要分為主函數(shù)、驅(qū)動 8位數(shù)碼管函數(shù)、驅(qū)動 1位數(shù)碼管函數(shù)及延時(shí)函數(shù).延時(shí)函數(shù)：采用for循環(huán).驅(qū)動1位數(shù)碼管子函數(shù)：設(shè)置74HC164的時(shí)鐘傳輸和數(shù)傳輸, 聲明變量,使數(shù)據(jù)表中每一個要表 示的字符的每一位都與 shift做與運(yùn)算從而進(jìn)行傳輸,上升沿將傳輸數(shù)據(jù)傳送出去.驅(qū)動 1位數(shù)碼管子函數(shù)的流程圖如圖 1所示.設(shè)置時(shí)鐘和 數(shù)據(jù)傳輸for循環(huán)逐個發(fā)送8位圖1驅(qū)動1位數(shù)碼管子函數(shù)流程圖驅(qū)動8位數(shù)碼管子函數(shù)：調(diào)用 8次驅(qū)動1位數(shù)碼管子函數(shù).驅(qū)動 8

2、位數(shù)碼管子函數(shù)流程圖如圖 2所示.調(diào)用8次一 位數(shù)碼管圖2驅(qū)動8位數(shù)碼管流程圖主函數(shù)：設(shè)置IO 口,while死循環(huán)中調(diào)用驅(qū)動 8位.主函數(shù)流程圖如圖3所示.可編輯while圖3主函數(shù)流程圖實(shí)驗(yàn)結(jié)果：供電后,數(shù)碼管顯示“ 5202114. 字樣./*源程序:程序名稱：5202114.*/*程序功能:通過模擬同步串口限制8個共陽數(shù)碼管*/*P5.1數(shù)據(jù)管腳,P5.3同步時(shí)鐘管腳*/頭文件/聲明驅(qū)動1位數(shù)碼管函數(shù)#include void delay(void);/聲明延遲函數(shù)void seg7_1 (unsigned char seg7_data);void seg7_8 ( unsigned

3、char seg7_data7,unsigned char seg7_data6,unsigned char seg7_data5,unsigned char seg7_data4,unsigned char seg7_data3,unsigned char seg7_data2,unsigned char seg7_data0);const unsigned char decoder_seg7=0x92,0xa4,0xc0,0xf9,0xb0,0xf9,0x99,0x7f ;int main(void)WDTCTL=WDTPW+WDTHOLD;P5SEL&=BIT1;P5DIR|=BIT1;

4、P5SEL&=BIT3;P5DIR|=BIT3;while(1)seg7_8 (7,6,5,4,3,2,1,0);delay ( );void seg7_8 (unsigned char seg7_data7,unsigned char seg7_data6,unsigned char seg7_data5,unsigned char seg7_data4,/聲明驅(qū)動8位數(shù)碼管函數(shù)/數(shù)碼管顯示表【5202114./主函數(shù)/關(guān)閉看門狗/設(shè)置P5.1端口為并行數(shù)字輸入/輸出口/設(shè)置P5.1端口為輸出口/設(shè)置P5.3端口為并行數(shù)字輸入/輸出口/設(shè)置P5.3端口為輸出口/重復(fù)執(zhí)行/調(diào)用驅(qū)動8位數(shù)碼管函

5、數(shù)/延時(shí)unsigned char seg7_data3,unsigned char seg7_data1, unsigned char seg7_data0)/驅(qū)動8位數(shù)碼管的同步串行數(shù)據(jù)接口驅(qū)動函數(shù)seg7_1(seg7_data0);/調(diào)用1位數(shù)碼管的同步串行數(shù)據(jù)接口驅(qū)動函數(shù)seg7_1(seg7_data1);seg7_1(seg7_data2);seg7_1(seg7_data3);seg7_1(seg7_data4);seg7_1(seg7_data5);seg7_1(seg7_data6);seg7_1(seg7_data7);void seg7_1 (unsigned char seg7_data)/驅(qū)動1位數(shù)碼管的同步串行數(shù)據(jù)接口驅(qū)動函數(shù)unsigned char code_seg7;/聲明顯示代碼變量unsigned char a;/聲明循環(huán)變量unsigned char shift;/聲明串行數(shù)據(jù)位存儲變量code_seg7=decoder_seg7seg7_data;/顯示數(shù)據(jù)譯碼/同步串行接口初始化P5OUT&=BIT1;P5OUT&=BIT3;shift=0x80;for(a=0; a1;void delay (void)/(/ P5.1 輸出低電平/ P5.3 輸出低電平/串行數(shù)據(jù)位指向8位數(shù)據(jù)的最高位/判斷顯示代碼位的狀態(tài)/ P