Hello Jim, went with the Arduino, but thanks for the other information.
Hello Nevada Mark, trying to read PROD_ID but getting 0 from ADIS16485.
Based on ADIS16485 datasheet Rev A, Figure 27, pg 27 illustration of J1 connectors, I used jumper wires to make the following connections:
CS (J1-3) - to digital pin 10 (SS) (brown wire)
SCLK (J1-2) - to digital pin 13 (SCK) (orange wire)
DOUT (J1-4) - to digital pin 12 (MISO) (green wire)
DIN (J1-6) - to digital pin 11 (MOSI) (yellow wire)
VCC (J1-12) - to 3V3 (red wire)
GND (J1-9) - to GND (black wire)
The female connections to the PCB are a bit wider than I would like, but they seem to be well connected.
Based on the documentation Pin 1 of the PCB is marked with a *, correct?
Does my wiring look like it could work?
Here are the 2 functions used to get the PROD_ID:
#define PROD_ID 0x7E // Product identification, adis16485 See Table 9
unsigned int adis16485::product_id(){
// Read 16 bits from the PROD_ID register
return read(16, PROD_ID);
}
unsigned int adis16485::read(unsigned char nbits, unsigned char reg){
// initialize variables
unsigned char upper, lower, mask;
// Get upper and lower unsigned chars
digitalWrite(CS, LOW);
SPI.transfer(reg);
SPI.transfer(0x00);
digitalWrite(CS, HIGH);
delay_cycle();
digitalWrite(CS, LOW);
upper = SPI.transfer(0x00);
lower = SPI.transfer(0x00);
digitalWrite(CS, HIGH);
// calculate mask
mask = 0xFF >> (16 - nbits);
// Combine upper and lower, and return
return ( ( upper & mask ) << 8 ) | ( lower );
}
PROD_ID is on Page 0 which should be the default.
Let me know what you think about all of this?
Thanks.
--TallDave
