int main(int argc, char *argv[]) { int ret = 0; int devFD; int i; unsigned char ledString[]= "FRIENDLYARM"; if ((devFD = MAX7219Init()) == -1) { printf("Fail to init MAX7219\n"); return -1; } for(i = 0; i < sizeof(ledString)-1; i++) { printf("%c\n", ledString[i]); MAX7219DispChar(devFD, ledString[i]); sleep(1); } MAX7219DeInit(devFD); return ret; }
/**************Initialise SPI interface for LED driver****************/ void mInitSPI(void) { MAX7219Init(); }//end Initialise SPI routine