?? ps7219_1.c
字號:
#include "reg51.h"#include "ps7219.h"void ps7219_reset(){unsigned char i;ps7219_pin_RST=0;for(i=0;i<125;i++)ps7219_delay();ps7219_pin_RST=1;for(i=0;i<255;i++)ps7219_delay();ps7219_pin_RST=0;for(i=0;i<125;i++)ps7219_delay();}void ps7219_init(){ps7219_reset();ps7219_send_data(addr_scan_count,0x04);ps7219_send_data(addr_light_con,0x0f);ps7219_send_data(addr_trans_mode,0xff);ps7219_send_data(addr_close,0x01);}void ps7219_echo(unsigned char da_1,da_2,da_3,da_4){ ps7219_send_data(0x01,da_1); ps7219_send_data(0x02,da_2); ps7219_send_data(0x03,da_3); ps7219_send_data(0x04,da_4);}void ps7219_send_data(unsigned char addr,da){unsigned char i,byte_out;byte_out=addr;ps7219_pin_DIN=1;ps7219_pin_CLK=1;ps7219_pin_LOAD=0;for(i=0;i<8;i++){ps7219_pin_CLK=1;ps7219_pin_DIN=(bit)(byte_out&0x80);byte_out=byte_out<<1;ps7219_pin_CLK=0;ps7219_delay();}ps7219_pin_CLK=1;byte_out=da;for(i=0;i<7;i++){ps7219_pin_CLK=1;ps7219_pin_DIN=(bit)(byte_out&0x80);byte_out=byte_out<<1;ps7219_pin_CLK=0;ps7219_delay();}ps7219_pin_CLK=1;ps7219_pin_LOAD=1;ps7219_pin_DIN=(bit)(byte_out&0x80);ps7219_pin_CLK=0;ps7219_delay();ps7219_pin_CLK=1;}void ps7219_delay(void){unsigned char i;for(i=0;i<125;i++){}}?? 快捷鍵說明
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