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1、用STC89C52 74hc138驱动列，74hc595驱动行，8x8点阵显示问题。显示箭头和桃心的仿真画面如下。P1 0/T2 P1 1JT2EXPSENALE EAKTAL1XTAL2RSTPO.O/ADO PCI 1/AD1 P0.2/AD2P0.3/AD3P0.4/AD4P0.5/AD5P0 6/AD6P0.7/AD7P2.0JA8P2.1/A9P2.2/A10 P2.3/A11P2.4/A12P2.5/A13P2.6/A1 4P2.7/A15P3 O/RXDP3.1HDP3.2/INTOP3.3/iNTfP3 4JT0P3.5JT1F3百亟P3.7/ROAT89C62ppp2 3 4
2、A .U3OEQ7MRQ7Q6Q5Q4 ST_CPQ3Q2DSQISH_CPQD74HC595U2ABC12 3 E E EY0Y1Y2Y3Y4Y5Y6Y7调试成功的程序如下：/=#in clude#defi ne uint un sig ned int#defi ne uchar un sig ned charsbit H_shcp = P1A3; sbit H_stcp = P1A4;sbit H_oe = PM5; sbit H_ds = P1A6;sbit HC138_G =卩3八1;/HC595/HC138-H- UL心片-H- UL心片箭头桃心uchar data_j = 0x00
3、,0x00,0x18,0x3c,0x5a,0x18,0x18,0x00; /uchar data_t = 0x00,0x66,0x99,0x81,0x81,0x42,0x24,0x18; / void delaxms( uint xms)uint i, j;for(i = xms; i 0; i-) for(j = 118; j 0; j-);/ void main()void sendbyte_H(uchar aa) / uchar z;for(z = 0; z = 1; /H_stcp = 0;H_stcp = 1; /利用HC595俞出循环 8 次移入数据数据低位送到HC595数据线上升沿俞入数据右移一位上升沿使数据并行俞出uint i, r;while(1) for(r = 30; r 0; r-) /显示箭头for(i = 0; i 0; r-) /显示空白for(i = 0; i 0; r-) /显示桃心for(i = 0; i 0; r-) / for(i = 0; i 8; i+) HC138_G = 1; / sendbyte_H(0); / P1 = 0xd8 | i;/HC138_G = 0; / delaxms(5); / 显示的时间显示空白关闭 138，关闭显示输出 0换行打开显示显示的时间