Well, 13 is SCK, so you seem to have some wiring issues right off the bat.
13 is clock,
12 is MISO (connect to device's Dout
11 is MOSI (connect to device's Din)
and D10 for chip select.
You should also have a 0.1uF capacitor on the devices Vcc pin, to Gnd.
I'm not familiar with that library.
I just wrote my own code to cycle thru the 8 addresses on a MCP3208, which is a 12 bit ADC.
int baseADCaddress = 0x0600; // 600, 640, 680, 6C0, 700, 740, 780, 7C0
// Elapsed time check for ADC and Switch reading
if (millis()>=previousMillis){
previousMillis = previousMillis + 5; // set for next 5 mS interval
// read ADC with 3 byte transfer
PORTB = PORTB & B11111011; // ADC_SS, LOW
// ADCaddress = 0x0600, 640, 680, 6C0, 700, 740, 780, 7C0
dummyADC = SPI.transfer (highByte(ADCaddress)); // 0x06, 0x07 out, read in dummy data
highADC = SPI.transfer (lowByte(ADCaddress)); // 0x00, 0x40, 0x80, 0xC0, read in upper 4 bits
lowADC = SPI.transfer (0); // dummy 0 byte out , read in lower 8 bits
PORTB = PORTB | B00000100; // ADC_SS, HIGH
// send the data out
Serial.write (ADCsyncbyte); // syncbyte = B00110011, 0x33
// bits 4-3-2 = 0 when switch pressed. Invert them. Leave bits 1-0 alone. No bits 7-6. Bit 5 not used.
Serial.write (PINC ^ B0011100); // 3 switches on Port C, make them 1 if 0 (1 EXOR 1 = 0, 0 EXOR 1 = 1, 0 EXOR 0 = 0
Serial.write (address_count); // find way to put this in top nibble of next command?
Serial.write (highADC & 0x0F); // send it out
Serial.write (lowADC); // send it out
// prep address_count for next pass. Used to create ADC select, DAC select
address_count = address_count +1; // 0 to 7, pass to Rx for DAC sync
if (address_count == 8){
address_count = 0;
} // reset if hit all 8
ADCaddress = baseADCaddress + (address_count * 0x40); // update for next ADC pass
} // end 5mS test
The bytes were sent to another device, which put them back together. You can change the Serial.write()s I used to Serial.print()s and manipulate the data as needed.