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This code is bad. Don't use this fork as an example. I don't know if this shows up publicly.
Dependencies: MPU6050-DMP mbed
Fork of MPU6050_Example by
Revision 2:07e29b6d29da, committed 2015-03-18
- Comitter:
- majik
- Date:
- Wed Mar 18 22:21:23 2015 +0000
- Parent:
- 1:ec0a08108442
- Commit message:
- This program successfully sends the DMP data for 2 IMUs.; Only modification required: Lowered the DMP data rate so the FIFO buffer doesn't overflow.
Changed in this revision
MPU6050-DMP.lib | Show annotated file Show diff for this revision Revisions of this file |
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/MPU6050-DMP.lib Sat Nov 23 16:47:59 2013 +0000 +++ b/MPU6050-DMP.lib Wed Mar 18 22:21:23 2015 +0000 @@ -1,1 +1,1 @@ -https://mbed.org/users/syundo0730/code/MPU6050-DMP/#7d1bf3ce0053 +http://developer.mbed.org/users/majik/code/MPU6050-DMP/#d348c3cad7c7
--- a/main.cpp Sat Nov 23 16:47:59 2013 +0000 +++ b/main.cpp Wed Mar 18 22:21:23 2015 +0000 @@ -48,6 +48,7 @@ #include "I2Cdev.h" #include "MPU6050_6Axis_MotionApps20.h" +#include "MPU6051_6Axis_MotionApps20.h" //#include "MPU6050.h" // not necessary if using MotionApps include file // class default I2C address is 0x68 @@ -56,6 +57,7 @@ // AD0 high = 0x69 MPU6050 mpu; +MPU6051 mpu2; /* ========================================================================= NOTE: In addition to connection 3.3v, GND, SDA, and SCL, this sketch @@ -77,10 +79,10 @@ const float M_PI = 3.14159265; -// uncomment "OUTPUT_READABLE_QUATERNION" if you want to see the actual +//uncomment "OUTPUT_READABLE_QUATERNION" if you want to see the actual // quaternion components in a [w, x, y, z] format (not best for parsing // on a remote host such as Processing or something though) -//#define OUTPUT_READABLE_QUATERNION +#define OUTPUT_READABLE_QUATERNION // uncomment "OUTPUT_READABLE_EULER" if you want to see Euler angles // (in degrees) calculated from the quaternions coming from the FIFO. @@ -93,7 +95,7 @@ // from the FIFO. Note this also requires gravity vector calculations. // Also note that yaw/pitch/roll angles suffer from gimbal lock (for // more info, see: http://en.wikipedia.org/wiki/Gimbal_lock) -//#define OUTPUT_READABLE_YAWPITCHROLL +#define OUTPUT_READABLE_YAWPITCHROLL // uncomment "OUTPUT_READABLE_REALACCEL" if you want to see acceleration // components with gravity removed. This acceleration reference frame is @@ -118,7 +120,14 @@ uint8_t devStatus; // return status after each device operation (0 = success, !0 = error) uint16_t packetSize; // expected DMP packet size (default is 42 bytes) uint16_t fifoCount; // count of all bytes currently in FIFO -uint8_t fifoBuffer[64]; // FIFO storage buffer +uint8_t fifoBuffer[128]; // FIFO storage buffer + +bool dmpReady2 = false; // set true if DMP init was successful +uint8_t mpuIntStatus2; // holds actual interrupt status byte from MPU +uint8_t devStatus2; // return status after each device operation (0 = success, !0 = error) +uint16_t packetSize2; // expected DMP packet size (default is 42 bytes) +uint16_t fifoCount2; // count of all bytes currently in FIFO +uint8_t fifoBuffer2[128]; // FIFO storage buffer // orientation/motion vars Quaternion q; // [w, x, y, z] quaternion container @@ -129,13 +138,18 @@ float euler[3]; // [psi, theta, phi] Euler angle container float ypr[3]; // [yaw, pitch, roll] yaw/pitch/roll container and gravity vector + // packet structure for InvenSense teapot demo uint8_t teapotPacket[14] = { '$', 0x02, 0,0, 0,0, 0,0, 0,0, 0x00, 0x00, '\r', '\n' }; -DigitalOut led1(LED1); -InterruptIn checkpin(p29); -Serial pc(USBTX, USBRX); - +DigitalOut led1(PTE3); +InterruptIn checkpin(PTD7); //PTD7, PTD5 +InterruptIn checkpin2(PTD5); +Serial pc(PTA2,PTA1); +DigitalOut btSwitch(PTE30); +DigitalOut imuSwitch(PTD6); //PTD6, PTD4 +DigitalOut imu2Switch(PTD4); +//int counter = 0; // ================================================================ // === INTERRUPT DETECTION ROUTINE === // ================================================================ @@ -144,14 +158,26 @@ void dmpDataReady() { mpuInterrupt = true; } +volatile bool mpuInterrupt2 = false; // indicates whether MPU interrupt pin has gone high +void dmpDataReady2() { + mpuInterrupt2 = true; +} void setup(); void loop(); - +void loop2(); +Timer t; int main() { setup(); + t.start(); + pc.baud(115200); while(1) { + // pc.printf("Loopy loop\n\r"); + //pc.printf("%f\t",t.read()); loop(); + //pc.printf("\t"); + loop2(); + //pc.printf("\n\r"); } } @@ -165,7 +191,25 @@ // the baud timing being too misaligned with processor ticks. You must use // 38400 or slower in these cases, or use some kind of external separate // crystal solution for the UART timer. - +btSwitch = 1; +imuSwitch = 1; +imu2Switch = 1; +wait_ms(200); +while(!mpu.testConnection()){ + imuSwitch = 0; + wait_ms(100); + imuSwitch = 1; + wait_ms(200); + led1 = !led1; +} +while(!mpu2.testConnection()){ + imu2Switch = 0; + wait_ms(100); + imu2Switch = 1; + wait_ms(200); + led1 = !led1; +} +pc.baud(115200); // initialize device pc.printf("Initializing I2C devices...\r\n"); mpu.initialize(); @@ -175,12 +219,6 @@ if (mpu.testConnection()) pc.printf("MPU6050 connection successful\r\n"); else pc.printf("MPU6050 connection failed\r\n"); - // wait for ready - //Serial.println(F("\nSend any character to begin DMP programming and demo: ")); - //while (Serial.available() && Serial.read()); // empty buffer - //while (!Serial.available()); // wait for data - //while (Serial.available() && Serial.read()); // empty buffer again - // load and configure the DMP pc.printf("Initializing DMP...\r\n"); devStatus = mpu.dmpInitialize(); @@ -213,7 +251,47 @@ pc.printf("%d", devStatus); pc.printf(")\r\n"); } + // initialize device + pc.printf("Initializing I2C devices...\r\n"); + mpu2.initialize(); + // verify connection + pc.printf("Testing device connections...\r\n"); + if (mpu2.testConnection()) pc.printf("MPU6050 connection successful\r\n"); + else pc.printf("MPU6050 connection failed\r\n"); + + // load and configure the DMP + pc.printf("Initializing DMP...\r\n"); + devStatus2 = mpu2.dmpInitialize(); + + // make sure it worked (returns 0 if so) + if (devStatus2 == 0) { + // turn on the DMP, now that it's ready + pc.printf("Enabling DMP...\r\n"); + mpu2.setDMPEnabled(true); + + // enable Arduino interrupt detection + pc.printf("Enabling interrupt detection (Arduino external interrupt 0)...\r\n"); + checkpin2.rise(&dmpDataReady2); + + mpuIntStatus2 = mpu2.getIntStatus(); + + // set our DMP Ready flag so the main loop() function knows it's okay to use it + pc.printf("DMP ready! Waiting for first interrupt...\r\n"); + dmpReady2 = true; + + // get expected DMP packet size for later comparison + packetSize2 = mpu2.dmpGetFIFOPacketSize(); + } else { + // ERROR! + // 1 = initial memory load failed + // 2 = DMP configuration updates failed + // (if it's going to break, usually the code will be 1) + + pc.printf("DDMP Initialization failed (code "); + pc.printf("%d", devStatus2); + pc.printf(")\r\n"); + } } @@ -238,6 +316,8 @@ // . // . // . + //led1 = !led1; + //wait_ms(100); } // reset interrupt flag and get INT_STATUS byte @@ -265,6 +345,8 @@ // (this lets us immediately read more without waiting for an interrupt) fifoCount -= packetSize; + + printf("\n\r%.4f\t",t.read()); #ifdef OUTPUT_READABLE_QUATERNION // display quaternion values in easy matrix form: w x y z mpu.dmpGetQuaternion(&q, fifoBuffer); @@ -272,7 +354,7 @@ printf("%f\t", q.w); printf("%f\t", q.x); printf("%f\t", q.y); - printf("%f\t\r\n", q.z); + printf("%f\t", q.z); #endif #ifdef OUTPUT_READABLE_EULER @@ -282,7 +364,7 @@ printf("euler\t"); printf("%f\t", euler[0] * 180/M_PI); printf("%f\t", euler[1] * 180/M_PI); - printf("%f\t\r\n", euler[2] * 180/M_PI); + printf("%f\t\", euler[2] * 180/M_PI); #endif #ifdef OUTPUT_READABLE_YAWPITCHROLL @@ -291,9 +373,9 @@ mpu.dmpGetGravity(&gravity, &q); mpu.dmpGetYawPitchRoll(ypr, &q, &gravity); printf("ypr\t"); - printf("%f\t", ypr[0] * 180/M_PI); - printf("%f\t", ypr[1] * 180/M_PI); - printf("%f\t\r\n", ypr[2] * 180/M_PI); + printf("%.4f\t", ypr[0] * 180/M_PI); + printf("%.4f\t", ypr[1] * 180/M_PI); + printf("%.4f\t", ypr[2] * 180/M_PI); #endif #ifdef OUTPUT_READABLE_REALACCEL @@ -303,9 +385,9 @@ mpu.dmpGetGravity(&gravity, &q); mpu.dmpGetLinearAccel(&aaReal, &aa, &gravity); printf("areal\t"); - printf("%f\t", aaReal.x); - printf("%f\t", aaReal.y); - printf("%f\t\r\n", aaReal.z); + printf("%f.4\t", aaReal.x); + printf("%f.4\t", aaReal.y); + printf("%f.4\t", aaReal.z); #endif #ifdef OUTPUT_READABLE_WORLDACCEL @@ -316,9 +398,9 @@ mpu.dmpGetGravity(&gravity, &q); mpu.dmpGetLinearAccelInWorld(&aaWorld, &aaReal, &q); printf("aworld\t"); - printf("%f\t", aaWorld.x); - printf("%f\t", aaWorld.y); - printf("%f\t\r\n", aaWorld.z); + printf("%f.4\t", aaWorld.x); + printf("%f.4\t", aaWorld.y); + printf("%f.4\t", aaWorld.z); #endif #ifdef OUTPUT_TEAPOT @@ -338,6 +420,129 @@ #endif // blink LED to indicate activity - led1 = !led1; + //led1 = !led1; + } +} + + +void loop2() { + // if programming failed, don't try to do anything + if (!dmpReady2) return; + + // wait for MPU interrupt or extra packet(s) available + while (!mpuInterrupt2 && fifoCount2 < packetSize2) { + // other program behavior stuff here + // . + // . + // . + // if you are really paranoid you can frequently test in between other + // stuff to see if mpuInterrupt is true, and if so, "break;" from the + // while() loop to immediately process the MPU data + // . + // . + // . + //led1 = !led1; + //wait_ms(100); + } + + // reset interrupt flag and get INT_STATUS byte + mpuInterrupt2 = false; + mpuIntStatus2 = mpu2.getIntStatus(); + + // get current FIFO count + fifoCount2 = mpu2.getFIFOCount(); + + // check for overflow (this should never happen unless our code is too inefficient) + if ((mpuIntStatus2 & 0x10) || fifoCount2 == 1024) { + // reset so we can continue cleanly + mpu2.resetFIFO(); + //Serial.println(F("FIFO overflow!")); + + // otherwise, check for DMP data ready interrupt (this should happen frequently) + } else if (mpuIntStatus2 & 0x02) { + // wait for correct available data length, should be a VERY short wait + while (fifoCount2 < packetSize2) fifoCount2 = mpu2.getFIFOCount(); + + // read a packet from FIFO + mpu2.getFIFOBytes(fifoBuffer2, packetSize2); + + // track FIFO count here in case there is > 1 packet available + // (this lets us immediately read more without waiting for an interrupt) + fifoCount2 -= packetSize2; + + #ifdef OUTPUT_READABLE_QUATERNION + // display quaternion values in easy matrix form: w x y z + mpu2.dmpGetQuaternion(&q, fifoBuffer2); + printf("quat\t"); + printf("%.4f\t", q.w); + printf("%.4f\t", q.x); + printf("%.4f\t", q.y); + printf("%.4f\t", q.z); + #endif + + #ifdef OUTPUT_READABLE_EULER + // display Euler angles in degrees + mpu2.dmpGetQuaternion(&q, fifoBuffer2); + mpu2.dmpGetEuler(euler, &q); + printf("euler\t"); + printf("%.4f\t", euler2[0] * 180/M_PI); + printf("%.4f\t", euler2[1] * 180/M_PI); + printf("%.4f\t", euler2[2] * 180/M_PI); + #endif + + #ifdef OUTPUT_READABLE_YAWPITCHROLL + // display Euler angles in degrees + mpu2.dmpGetQuaternion(&q, fifoBuffer2); + mpu2.dmpGetGravity(&gravity, &q); + mpu2.dmpGetYawPitchRoll(ypr, &q, &gravity); + printf("ypr\t"); + printf("%.4f\t", ypr[0] * 180/M_PI); + printf("%.4f\t", ypr[1] * 180/M_PI); + printf("%.4f\t", ypr[2] * 180/M_PI); + #endif + + #ifdef OUTPUT_READABLE_REALACCEL + // display real acceleration, adjusted to remove gravity + mpu.dmpGetQuaternion(&q, fifoBuffer); + mpu.dmpGetAccel(&aa, fifoBuffer); + mpu.dmpGetGravity(&gravity, &q); + mpu.dmpGetLinearAccel(&aaReal, &aa, &gravity); + printf("areal\t"); + printf("%.4f\t", aaReal.x); + printf("%.4f\t", aaReal.y); + printf("%.4f\t\r\n", aaReal.z); + #endif + + #ifdef OUTPUT_READABLE_WORLDACCEL + // display initial world-frame acceleration, adjusted to remove gravity + // and rotated based on known orientation from quaternion + mpu.dmpGetQuaternion(&q, fifoBuffer); + mpu.dmpGetAccel(&aa, fifoBuffer); + mpu.dmpGetGravity(&gravity, &q); + mpu.dmpGetLinearAccelInWorld(&aaWorld, &aaReal, &q); + printf("aworld\t"); + printf("%f\t", aaWorld.x); + printf("%f\t", aaWorld.y); + printf("%f\t\r\n", aaWorld.z); + #endif + /* + #ifdef OUTPUT_TEAPOT + // display quaternion values in InvenSense Teapot demo format: + teapotPacket[2] = fifoBuffer[0]; + teapotPacket[3] = fifoBuffer[1]; + teapotPacket[4] = fifoBuffer[4]; + teapotPacket[5] = fifoBuffer[5]; + teapotPacket[6] = fifoBuffer[8]; + teapotPacket[7] = fifoBuffer[9]; + teapotPacket[8] = fifoBuffer[12]; + teapotPacket[9] = fifoBuffer[13]; + for (int i = 0; i < 14; ++i) { + pc.send(teapotPacket[i]); + } + teapotPacket[11]++; // packetCount, loops at 0xFF on purpose + #endif*/ + printf("\r\n"); + // blink LED to indicate activity + //led1 = !led1; } } \ No newline at end of file