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Found 3 results

  1. I am working on TM4C1294XL board and through Energia platform. I am trying to get the outputs from BMG250 shuttle board. I am pasting the code below but I believe the code has no fault. I have doubts about the connections to the shuttle board. I am getting -1 (when dividing outputs by 256) in all the three axis. I am sharing the schematic pdf that has information about the shuttle board connections. I have connected as given in the file but I have the following doubts: 1. How can set the pmu_status to normal gyroscope as it is mentioned in the datasheet as only readable? And when I read the pmu_status to know the current mode, I only get a 0 as the output and no output comes for the three axis. 2. In the schematic pdf, it can be seen that there are multiple SDO, SCL etc. Should I connect them to each other or use only one of them? Somebody help me out. Code :- #include "Wire.h" #define pmu_status 0x03 #define data 0x12 #define gyr_config 0x42 #define gyr_range 0x43 #define offset 0x74 #define dataReadyStatus 0x1B #define X_axis_dataX0 0x12 #define X_axis_dataX1 0x13 #define Y_axis_dataY0 0x14 #define Y_axis_dataY1 0x15 #define Z_axis_dataZ0 0x16 #define Z_axis_dataZ1 0x17 #define command 0x7E int gyrAddress=0x68; long X0,X1,Y0,Y1,Z0,Z1; long X_out,Xg,Y_out,Yg,Z_out,Zg; void setup() { Wire.setModule(0); Wire.begin(); Serial.begin(115200); Wire.beginTransmission(gyrAddress); Wire.write(gyr_config); Wire.write(0x28); Wire.write(command); Wire.write(0x15); Wire.write(gyr_range); Wire.write(0x00); Wire.endTransmission(); } void loop() { Wire.beginTransmission(gyrAddress); Wire.write(X_axis_dataX0); Wire.write(X_axis_dataX1); Wire.endTransmission(); Wire.requestFrom(gyrAddress,2); if(Wire.available()<=2) { X0 = Wire.read(); X1 = Wire.read(); X1 = X1<<8; X_out = X0+X1; Xg = (X_out)/1.0; } Wire.beginTransmission(gyrAddress); Wire.write(Y_axis_dataY0); Wire.write(Y_axis_dataY1); Wire.endTransmission(); Wire.requestFrom(gyrAddress,2); if(Wire.available()<=2) { Y0 = Wire.read(); Y1 = Wire.read(); Y1 = Y1<<8; Y_out = Y0+Y1; Yg = (Y_out)/1.0; } Wire.beginTransmission(gyrAddress); Wire.write(Z_axis_dataZ0); Wire.write(Z_axis_dataZ1); Wire.endTransmission(); Wire.requestFrom(gyrAddress,2); if(Wire.available()<=2) { Z0 = Wire.read(); Z1 = Wire.read(); Z1 = Z1<<8; Z_out = Z0+Z1; Zg = (Z_out)/1.0; } Serial.print("Xg = "); Serial.print(Xg); Serial.print("\t"); Serial.print("Yg = "); Serial.print(Yg); Serial.print("\t"); Serial.print("Zg = "); Serial.println(Zg); delay(200); } SCHEMATIC1 _ BMG250.pdf
  2. I am trying to interface GY-80 (only adxl345) to TM4C1294XL board using Energia. But outputs comes out to be 0. And also there comes this error "Failed to load dynamic library: 'ftd2xx.dll' " while uploading but the code gets uploaded successfully. I am pasting the code below, can somebody tell me where i am doing it wrong? #include "Wire.h" #define Power_Register 0x2D #define BW_rate 0x2C #define Int_enable 0x2E #define dataFormat 0x31 #define X_Axis_Register_DATAX0 0x32 #define X_Axis_Register_DATAX1 0x33 #define Y_Axis_Register_DATAY0 0x34 #define Y_Axis_Register_DATAY1 0x35 #define Z_Axis_Register_DATAZ0 0x36 #define Z_Axis_Register_DATAZ1 0x37 #define fifoCntrl 0x38 int ADXAddress = 0x53; int X0,X1,X_out; int Y0,Y1,Y_out; int Z1,Z0,Z_out; float Xa,Ya,Za; void setup() { Wire.setModule(0); Wire.begin(ADXAddress); Serial.begin(115200); delay(100); Wire.beginTransmission(ADXAddress); Wire.write(Power_Register); Wire.write(8); Wire.write(BW_rate); Wire.write(10); Wire.write(dataFormat); Wire.write(11); Wire.write(fifoCntrl); Wire.write(0); Wire.endTransmission(); } void loop() { Wire.beginTransmission(ADXAddress); Wire.write(X_Axis_Register_DATAX0); Wire.write(X_Axis_Register_DATAX1); Wire.endTransmission(); Wire.requestFrom(ADXAddress,2); if(Wire.available()<=2) { X0 = Wire.read(); X1 = Wire.read(); X1=X1<<8; X_out =X0+X1; } Wire.beginTransmission(ADXAddress); Wire.write(Y_Axis_Register_DATAY0); Wire.write(Y_Axis_Register_DATAY1); Wire.endTransmission(); Wire.requestFrom(ADXAddress,2); if(Wire.available()<=2) { Y0 = Wire.read(); Y1 = Wire.read(); Y1=Y1<<8; Y_out =Y0+Y1; } Wire.beginTransmission(ADXAddress); Wire.write(Z_Axis_Register_DATAZ0); Wire.write(Z_Axis_Register_DATAZ1); Wire.endTransmission(); Wire.requestFrom(ADXAddress,2); if(Wire.available()<=2) { Z0 = Wire.read(); Z1 = Wire.read(); Z1=Z1<<8; Z_out =Z0+Z1; } Serial.print("Xa= "); Serial.print(Xa);Serial.print("\t"); Serial.print("Ya= "); Serial.print(Ya);Serial.print("\t"); Serial.print("Za= "); Serial.println(Za); delay(1000); Serial.println(); }
  3. i would like to interface a multiplexed 4-digit-7-segment common anode display with msp430 g2 launchpad and display 4 numbers simultaneously.here the 4 digits are controlled by 4 BC547 transistors. here the segments a,b,c,d,e,f,g,dp of the display are connected to port1 pins respectively and the transistors bases are connected to port2 pins. i tried with single 7-segment display and it is working .when i extended to 4-digits i could not get the display. could you please give me the code to display 4 numbers simultaneously. thank you...
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