Other Parts Discussed in Thread: ENERGIA
Hi, I am trying to make a UART connection with a device from serial1 in MSP432. It isn't working as i cannot see anything printing on my serial monitor (I am trying to print the data stored in global variables using serial/USB).
Wherein the same code works fine on MSP430 or TM4C1294 devices.
I have double checked my wiring connections.. P3.2, P3.3 for RX, TX.
Can anyone here help me resolve this issue or point out where im going wrong.. Please find the code below
//-----------------------------------------------------------------------------
// Microchip MCP39F501 Power Monitor TI Interface Sample Code
#define ACK 0x06
#define NACK 0x15
#define CSFAIL 0x51
int OK1_Count = 0; // Success/No Success Counter for Reg Read 0x0002
int NOK1_Count = 0;
byte Xmit_Dly = 2; // Transmit Delay between bytes, in msec
byte Header; // Received ACK/NACK/CSFAIL byte
byte Byte_Count; // Reveived Byte count
byte CurrentRMS_LL; // 0x0004 CurrentRMS
byte CurrentRMS_L; // 0x0005 CurrentRMS
byte CurrentRMS_H; // 0x0006 CurrentRMS
byte CurrentRMS_HH; // 0x0007 CurrentRMS
byte VoltageRMS_L; // 0x0008 Voltage RMS
byte VoltageRMS_H; // 0x0009 Voltage RMS
byte ActivePower_LL; // 0x000A ActivePower
byte ActivePower_L; // 0x000B ActivePower
byte ActivePower_H; // 0x000C ActivePower
byte ActivePower_HH; // 0x000D ActivePower
byte ReactivePower_LL; // 0x000E ReactivePower
byte ReactivePower_L; // 0x000F ReactivePower
byte ReactivePower_H; // 0x0010 ReactivePower
byte ReactivePower_HH; // 0x0011 ReactivePower
byte ApparentPower_LL; // 0x0012 ApparentPower
byte ApparentPower_L; // 0x0013 ApparentPower
byte ApparentPower_H; // 0x0014 ApparentPower
byte ApparentPower_HH; // 0x0015 ApparentPower
byte PowerFactor_L; // 0x0016 PowerFactor
byte PowerFactor_H; // 0x0017 PowerFactor
byte Freq_L; // 0x0016 Frequency
byte Freq_H; // 0x0017 Frequency
byte CheckSum;
byte CalculatedCS;
float CurrentRMS; // Current RMS
float VoltageRMS; // Voltage RMS
float ActivePower; // Active Power
float ReactivePower; // Reactive Power
float ApparentPower; // Apparent Power
float PowerFactor; // Power Factor
float Freq; // Frequency
void setup() {
Serial.begin(9600);
Serial.println("Entering Loop ");
}
void loop() {
if (RegRead0x0004()) { OK1_Count++; } else { NOK1_Count++; }
Serial.println("------------------------------------------");
Serial.print("MCP39F501 DEMO BOARD : ");
Serial.println("------------------------------------------");
Serial.println("OUTPUTS");
Serial.print("RMS Current : "); Serial.print(CurrentRMS*0.0001,4); Serial.println(" A");
Serial.print("RMS Voltage : "); Serial.print(VoltageRMS*0.1,1); Serial.println(" V");
Serial.println("DATA COMMUNICATION");
Serial.print("1st frame counts: OK="); Serial.print(OK1_Count,DEC);
Serial.print(", Not OK="); Serial.println(NOK1_Count,DEC);
delay(1000);
}
bool RegRead0x0004(void) {
Serial1.begin(4800);
WriteByte(0xA5);
WriteByte(0x08);
WriteByte(0x41);
WriteByte((byte)0x00);
WriteByte(0x04);
WriteByte(0x4E);
WriteByte(0x16);
WriteByteND(0x56);
ClearBuffer();
// Parse the data returned from the meter
if (Serial1.available()) {
Header = Serial1.read();
Byte_Count = Serial1.read();
CurrentRMS_LL = Serial1.read();
CurrentRMS_L = Serial1.read();
CurrentRMS_H = Serial1.read();
CurrentRMS_HH = Serial1.read();
VoltageRMS_L = Serial1.read();
VoltageRMS_H = Serial1.read();
ActivePower_LL = Serial1.read();
ActivePower_L = Serial1.read();
ActivePower_H = Serial1.read();
ActivePower_HH = Serial1.read();
delay(50);
ReactivePower_LL = Serial1.read();
ReactivePower_L = Serial1.read();
ReactivePower_H = Serial1.read();
ReactivePower_HH = Serial1.read();
ApparentPower_LL = Serial1.read();
ApparentPower_L = Serial1.read();
ApparentPower_H = Serial1.read();
ApparentPower_HH = Serial1.read();
PowerFactor_L = Serial1.read();
PowerFactor_H = Serial1.read();
Freq_L = Serial1.read();
Freq_H = Serial1.read();
CheckSum = Serial1.read();
}
Serial1.end();
Serial.print("Cehcksum Received: ");
Serial.println(CheckSum,HEX);
// Calculate the expected CheckSum
CalculatedCS = (byte)((int)( Header + Byte_Count +
CurrentRMS_LL + CurrentRMS_L + CurrentRMS_H + CurrentRMS_HH +
VoltageRMS_L + VoltageRMS_H +
ActivePower_LL + ActivePower_L + ActivePower_H + ActivePower_HH +
ReactivePower_LL + ReactivePower_L + ReactivePower_H + ReactivePower_HH +
ApparentPower_LL + ApparentPower_L + ApparentPower_H + ApparentPower_HH +
PowerFactor_L + PowerFactor_H +
Freq_L + Freq_H +
0)%256);
Serial.print("Checksum Calculated: ");
Serial.println(CalculatedCS,HEX);
// Check for ACK, correct byte count and CheckSum matches expected checksum
if ((Header == 0x06) ){//&& (Byte_Count == 0xD) && (CheckSum == CalculatedCS)) {
Serial.println("IM HERE");
CurrentRMS = ((unsigned long)(CurrentRMS_HH << 24) + (unsigned long)(CurrentRMS_H << 16) + (unsigned long)(CurrentRMS_L << 8) + (unsigned long)(CurrentRMS_LL));
VoltageRMS = ((unsigned int)(VoltageRMS_H << 8) + (unsigned int)(VoltageRMS_L)) ;
return true;
}
else return false;
}
void WriteByte(byte _wbyte) {
Serial1.flush();
Serial1.write(_wbyte);
delay(Xmit_Dly);
}
void WriteByteND(byte _wbyte) {
Serial1.flush();
Serial1.write(_wbyte);
//delay(Xmit_Dly);
}
void ClearBuffer(void) {
Serial1.flush();
while(Serial1.available()) char _f = Serial1.read();
delay(30);
}
So when i run the code. if (Serial1.available()) this statement always FAIL. Program never enters into that if loop, it is just skipping that. As a result the Serial1.end(); after the IF loop is halting the program there and the loop breaks. As a result i cannot see anything print on my serial monitor.
But the same code works well with MSP430.
What would the issue be? Should i change some jumper settings on my MSP432 for the Serial1 to work. I tried on multiple MSP432 boards both red and black nothing worked.
