Hi.
Hope this is where this goes. I need help.
I am trying to interface a Arduino MKR Wifi1010 to a AD2S1210 Analog Devices Eval Card through SPI.
The AD2S1210 card is connected to an electric motor, and this card reads of the resolver on the motor (Cos, Sin, Exc). What I am looking for is the position of the motor. I know the card works, due to it reading fine over the parallel interface to another card that translates and communicates through USB to the computer to the Analog Devices Program.
I want that information to the arduino, over SPI, to HW align the motor with automation without having a pc connected.
I think i have the correct settings: SPISettings settingsA(2000000, MSBFIRST, SPI_MODE2);
(maby wrong speed)
Read it Here
Datasheet on the chip Here
Datasheets and schematic0s on the AD2S1210 Board here
I re-soldered 2 components on the original board.
LK2, from C pos to B pos, to set CS to low, as stated on page 28 of the datasheet "The CS input is not required for the serial interface and should be held low"
LK9, from A pos to B pos to set SOE low, as stated on page 28 of the datasheet " The serial interface is selected by holding the SOE pin low"
I also moved jumpers LK4 and LK5 to keep A0 and A1 to low (pos b), making it Normal mode, Position (page 20)
And jumpers on LK6 and LK7 (Res0 and Res1 (resolution, see page 20)) to Low, pos b. I have tried moving them around due to it stating it should also be set up in settings, but does not state default. (no difference in result no matter position)
I have connected (from AD2S1210 to Arduino MKR Wifi1010):
SDI to MOSI
SDO to MISO
SCLK to SCK
DGND to GND
SAMPLE to DI7
So i made 2 codes, first is a hack job from another forum post that was working on the same thing, tried editing it, due to I was using a different board (then the Analog devices one). Forum post Here
Code here:
const int AD2S1210_SAMPLE = 7; // Toggle to refresh data
const int AD2S1210_SDO = 10; // Serial output from AD2S1210
const int AD2S1210_SDI = 8; // Serial Input of AD2S1210
const int AD2S1210_SCK = 9; // Serial clock output
#define SCLK_H digitalWrite(AD2S1210_SCK, HIGH)
#define SCLK_L digitalWrite(AD2S1210_SCK, LOW)
#define SDI_H digitalWrite(AD2S1210_SDI, HIGH)
#define SDI_L digitalWrite(AD2S1210_SDI, LOW)
#define SAMPLE_H digitalWrite(AD2S1210_SAMPLE, HIGH)
#define SAMPLE_L digitalWrite(AD2S1210_SAMPLE, LOW)
#define SDO digitalRead(AD2S1210_SDO)
void AD2S1210_WRITE(uint8_t addr,uint8_t data);
uint8_t AD2S1210_READ(uint8_t addr);
uint16_t READ_Position(void); //read position
uint16_t Position;
uint8_t reg[10];
uint8_t Fault;
uint8_t test;
uint16_t Dos_temp;
void setup() {
Serial.begin(115200);
pinMode(AD2S1210_SAMPLE, OUTPUT);
pinMode(AD2S1210_SDO, INPUT_PULLUP);
pinMode(AD2S1210_SDI, OUTPUT);
pinMode(AD2S1210_SCK, OUTPUT);
SAMPLE_L;
}
void loop() {
Position=READ_Position();
Serial.print("Position: ");
Serial.println(Position);
delay(200);
}
uint16_t READ_Position(void)//read position
{
uint16_t position;
SAMPLE_H;
SAMPLE_L;
position=AD2S1210_READ(0x80);
position<<=8;
position|=AD2S1210_READ(0x81);
return position;
}
uint8_t AD2S1210_READ(uint8_t addr)
{
uint8_t temp;
SCLK_L;
temp=addr;
int data=0;
for(uint8_t s=0;s<8;s++)
{
SCLK_H;
if(temp&0x80){SDI_H;}
else{SDI_L;}
SCLK_L;
temp<<=1;
if(SDO){data++;}
if(s<7){data<<1;}
}
SCLK_H;
delay(1);
SCLK_L;
temp=0;
for(uint8_t s=0;s<8;s++)
{
SCLK_H;
SCLK_L;
temp<<=1;
if(SDO){temp++;}
}
SCLK_H;
return temp;
}
This only gives 65535.
And then i made a code using the SPI.h lib.
With this code i get some data, but it is not correct. either 0, 32768, 49152, 65472 or 65535 when i rotate the axle, but not rising or falling according to rotation.
#include <SPI.h>
const int AD2S1210_SAMPLE = 7;
const int AD2S1210_SCK = 9; // Serial clock output
uint16_t Position;
#define SAMPLE_H digitalWrite(AD2S1210_SAMPLE, HIGH)
#define SAMPLE_L digitalWrite(AD2S1210_SAMPLE, LOW)
#define SCLK_H digitalWrite(AD2S1210_SCK, HIGH)
#define SCLK_L digitalWrite(AD2S1210_SCK, LOW)
SPISettings settingsA(2000000, MSBFIRST, SPI_MODE2);
void setup() {
pinMode (AD2S1210_SAMPLE, OUTPUT);
SPI.begin();
}
void loop() {
Position=READ_Position();
Serial.print("Position: ");
Serial.println(Position);
delay(200);
}
uint16_t READ_Position(void)//read position
{
uint16_t position;
SAMPLE_H;
SAMPLE_L;
position=AD2S1210_READ(0x80);
position<<=8;
position|=AD2S1210_READ(0x81);
return position;
}
uint8_t AD2S1210_READ(uint8_t addr)
{
SPI.beginTransaction(settingsA);
uint8_t temp;
SCLK_L;
temp = SPI.transfer(addr);
SCLK_H;
SPI.endTransaction();
return temp;
}
So I have no idea what I am doing wrong.
I have done other code for SPI before, but i just can not wrap my head around the datasheet and make sense of it.
I find no code or others that has done this, so I cant backward engineer something, like i use to do.
PS I am in no means a programmer, just way to interested in stuff with little to no knowledge of it. 
I know mechanical, and basic electrical.
Hope someone can help me.
