msp430+数码管显示程序 #include MSP430x16x.h void _delay() { unsigned int i,j; for(i=0;i=5000;i++) { for(j=0;j=5;j++); } } void main(void) { WDTCTL = WDTPW + WDTHOLD; P1DIR=P1DIR|0xFF; static unsigned int a[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6, 0xa1,0x86,0x8e,0x8c,0xc1,0x91,0x00}; unsigned int x; for(;;) { for(x=0;x=16;x++) { P1OUT=a[x]; _delay(); } } } MSP430实现MAX7219显示程序(汇编) #include msp430x41x.h DIN EQU 001H ;P1.0 CLK EQU 002H ;P1.1 LOAD EQU 004H ;P1.2 ORG 0F000H RESET MOV #300H,SP ;初始化 MOV #WDTPW+WDTHOLD,WDTCTL BIS.B #CLK,P1DIR BIS.B #DIN,P1DIR BIS.B #LOAD,P1DIR PUSH #00C01H ;设置工作模式 BIC.B #LOAD,P1OUT CALL #MOVE BIS.B #LOAD,P1OUT PUSH #00B05H ;设置扫描位数 BIC.B #LOAD,P1OUT CALL #MOVE BIS.B #LOAD,P1OUT PUSH #009FFH ;设置编码方式 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00A07H ;设置亮度 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT XIAN PUSH #00107H ;显示第一位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00206H ;显示第二位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00305H ;显示第三位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00404H ;显示第四位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00503H ;显示第五位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00602H ;显示第六位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT JMP $ MOVE MOV.B #16,R6 MOV 2(SP),R13 MOV #1,R10 SENDLOOP BIC.B #CLK,P1OUT BIT R10,R13 JNZ SEND1 SEND0 BIC.B #DIN,P1OUT JMP GOON SEND1 BIS.B #DIN,P1OUT GOON BIS.B #CLK,P1OUT RLA R10 BIC.B #CLK,P1OUT DEC R6 JNZ SENDLOOP RET ORG 0FFFEH DW RESET END#include msp430x41x.h DIN EQU 001H ;P1.0 CLK EQU 002H ;P1.1 LOAD EQU 004H ;P1.2 ORG 0F000H MOV #300H,SP ;初始化 MOV #WDTPW+WDTHOLD,WDTCTL BIS.B #CLK,P1DIR BIS.B #DIN,P1DIR BIS.B #LOAD,P1DIR PUSH #00C01H ;设置工作模式 BIC.B #LOAD,P1OUT CALL #MOVE BIS.B #LOAD,P1OUT PUSH #00B05H ;设置扫描位数 BIC.B #LOAD,P1OUT CALL #MOVE BIS.B #LOAD,P1OUT PUSH #009FFH ;设置编码方式 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00A07H ;设置亮度 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT XIAN PUSH #00107H ;显示第一位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00206H ;显示第二位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00305H ;显示第三位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00404H ;显示第四位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00503H ;显示第五位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT PUSH #00602H ;显示第六位 BIC.B #LOAD,P1OUT CALL MOVE BIS.B #LOAD,P1OUT JMP $ MOVE MOV.B #16,R6 POP R13 MOV #1,R10 SENDLOOP BIC.B #CLK,P1OUT BIT R10,R13 JNZ SEND1 SEND0 BIC.B #DIN,P1OUT JMP GOON SEND1 BIS.B #DIN,P1OUT GOON BIS.B #CLK,P1OUT RLA R10 BIC.B #CLK,P1OUT DEC R6 JNZ SENDLOOP RET END |
评论