Dear TI,
I am working on AFE4490 using MSP430 as a Master device.
I am able to write into the AFE's registers and read them back. I am able to vary the transmitter reference voltage to 0.5, 0.75 and 1.0 Volts using Control Register 2.
I am not able to get any current in the LED pins. Nor am I amble to get any clocks on LED_ALM or PD_ALM even though I have enabled 'ALMPINCLKEN =1' in Alarm Register with CLKALMPIN[2:0] of Control Register1 as '000'.
I have shorted all the VDDs as I intend to operates the system finally at 3.3V. The MSP430 Launchpad board is powering the AFE4490 Board.
I am attaching the schematic and layout of the board along with the Energia code(copy pasted the code in a .txt file) I am using for MSP430 Launchpad board (25MHz).
Please help me solve the issue.
Regards,
Salil Kale
Research Assistant
Electrical Engineering
IIT-Bombay
/*
F5529 LaunchPad pin mapping
+--\/--+ +--\/--+
3.3v |1 21| 5.0v (TA2.2) P2.5 |40 20| GND
(TB0.0) P6.5 |2 22| GND (TA2.1) P2.4 |39 19| P2.0 (TA1.1)
(UCA0RXD -> Serial1) P3.4 |3 23| P6.0 (A0) (TA0.4) P1.5 |38 18| P2.2
(UCA0TXD -> Serial1) P3.3 |4 24| P6.1 (A1) (TA0.3) P1.4 |37 17| P7.4 (TB0.2)
P1.6 |5 25| P6.2 (A2) (TA0.2) P1.3 |36 16| RST
(A6) P6.6 |6 26| P6.3 (A3) (TA0.1) P1.2 |35 15| P3.0 (UCB0SIMO) (UCB0SDA)
P3.2 |7 27| P6.4 (A4) P4.3 |34 14| P3.1 (UCB0SOMI) (UCB0SCL)
P2.7 |8 28| P7.0 (A12) P4.0 |33 13| P2.6
(PM_UCB1SCL) P4.2 |9 29| P3.6 (TB0.6) P3.7 |32 12| P2.3 (TA2.0)
(PM_UCB1SDA) P4.1 |10 30| P3.5 (TB0.5) P8.2 |31 11| P8.1
+------+ +------+
----+
41| P2.1 (PUSH1)
42| P1.1 (PUSH2)
43| P1.0 (LED1 - RED)
44| P4.7 (LED2 - GREEN)
45| P4.5 (UCA1RXD -> ezFET -> Serial)
46| P4.4 (UCA1TXD -> ezFET -> Serial)
----+
*/
#include<SPI.h>
unsigned long data;
byte address;
const int SPI_STE = 8;
const int SPI_CLK = 7;
const int SPI_SIMO = 15;
const int SPI_SOMI = 14;
const int AFE_RESET = 39;
const int ADC_RDY = 38;
const int AFE_PDNZ = 40;
// constant int SPI_SOMI = 14;
// constant int SPI_STE = 8;
// constant int SPI_CLK = 7;
void setup()
{
// put your setup code here, to run once:
Serial.begin(9600);
SPI.begin();
pinMode(AFE_RESET,OUTPUT);
pinMode(ADC_RDY,INPUT);
pinMode(AFE_PDNZ,OUTPUT);
pinMode(SPI_STE,OUTPUT);
digitalWrite(AFE_RESET,HIGH);
digitalWrite(AFE_PDNZ,HIGH);
digitalWrite(SPI_STE, HIGH);
delay(10);
digitalWrite(AFE_RESET,LOW);
delay(10);
digitalWrite(AFE_RESET,HIGH);
delay(20);
write(0x01,0x0017C0); ////
write(0x02,0x001f3E); ////
write(0x03,0x001770); ////
write(0x04,0x001F3F); ////
write(0x05,0x000050); ////
write(0x06,0x0007CE); ////
write(0x07,0x000820); ////
write(0x08,0x000F9E); ////
write(0x09,0x0007D0); ////
write(0x0A,0x000F9F); ////
write(0x0B,0x000FF0); ////
write(0x0C,0x00176E); ////
write(0x0D,0x000006); ////
write(0x0E,0x0007cf); ////
write(0x0F,0x0007d6); ////
write(0x10,0x000f9f); ////
write(0x11,0x000fa6); ////
write(0x12,0x00176f); ////
write(0x13,0x001776); ////
write(0x14,0x001f3f); ////
write(0x15,0x000000); ////
write(0x16,0x000005); ////
write(0x17,0x0007d0); ////
write(0x18,0x0007d5); ////
write(0x19,0x000fa0); ////
write(0x1A,0x000fa5); ////
write(0x1B,0x001770); ////
write(0x1C,0x001775); ////
write(0x1D,0x001f3f); ////
write(0x1E,0x000101); ////
write(0x1F,0x000000); ////
write(0x20,0x000000);
write(0x21,0x000000);
write(0x22,0x02ffff);
write(0x23,0x020000); ////
write(0x24,0x000000);
write(0x25,0x000000);
write(0x26,0x000000);
write(0x27,0x000000);
write(0x28,0x000000);
write(0x29,0x000080);
write(0x2A,0x000000);
write(0x2B,0x000000);
write(0x2C,0x000000);
write(0x2D,0x000000);
write(0x2E,0x000000);
write(0x2F,0x000000);
write(0x30,0x000000);
unsigned long dataafe1, dataafe2, dataafe3, dataafe4, dataafe5, dataafe6, dataafe7;
// Serial.print(read(0x22));
dataafe1 = read(0x04);
dataafe2 = read(0x29);
dataafe3 = read(0x2C);
dataafe4 = read(0x2D);
dataafe5 = read(0x03);
// read(0x03);
// read(0x22);
delay(1);
}
void loop()
{
// put your main code here, to run repeatedly:
delay(10);
}
void write(byte address,unsigned long data)
{
digitalWrite(SPI_STE, LOW);
delay(1);
SPI.transfer(0x00);
SPI.transfer(0x00);
SPI.transfer(0x00);
SPI.transfer(0x00);
delay(1);
digitalWrite(SPI_STE, HIGH);
delay(1);
digitalWrite(SPI_STE, LOW);
delay(1);
SPI.transfer(address);
SPI.transfer(data>>16);
SPI.transfer(data>>8);
SPI.transfer(data);
digitalWrite(SPI_STE, HIGH);
delay(1);
}
unsigned long read(byte address)
{
unsigned long Result;
digitalWrite(SPI_STE, LOW);
delay(1);
SPI.transfer(0x00);
SPI.transfer(0x00);
SPI.transfer(0x00);
SPI.transfer(0x01);
delay(1);
digitalWrite(SPI_STE, HIGH);
delay(1);
unsigned long RX[3];
digitalWrite(SPI_STE, LOW);
delay(1);
RX[0] = SPI.transfer(address);///////////////
RX[1] = SPI.transfer(0x00);
RX[2] = SPI.transfer(0x00);
RX[3] = SPI.transfer(0x00);
digitalWrite(SPI_STE, HIGH);
delay(1);
Result = (RX[1] << 16)|(RX[2] << 8)|(RX[3]);
Serial.print(RX[1]);
Serial.print("\n");
Serial.print(RX[2]);
Serial.print("\n");
Serial.print(RX[3]);
Serial.print("\n");
Serial.print("\n");
return Result;
}
/*
write(0x23,0x001f3f);
write(0x23,0x001f3f);
write(0x23,0x001f3f);
write(0x23,0x001f3f);
write(0x23,0x001f3f);
write(0x23,0x001f3f);
*/
/*
address1 = 0x23;
data1= 0x020000; ////// Data to LED control register Address: 22h
address1 = 0x22;
data1= 0x020f0f; ////// Data to LED control register Address: 22h
address1 = 0x1D;
data1= 0x001f3f; ////// Data to LED control register Address: 22h
address1 = 0x23;
data1= 0x020000; ////// Data to LED control register Address: 22h
address1 = 0x22;
data1= 0x01ffff; ////// Data to LED control register Address: 22h
address = 1;
data=0;
*/
