![](/media/cache/group/11700697_10200701668420946_8214886085951071495_o.jpg.50x50_q85.jpg)
Class of MPU9250
Dependencies: AHRS_fillter mbed
Fork of MPU9250AHRS by
main.cpp@6:5665d427bceb, 2016-01-20 (annotated)
- Committer:
- icyzkungz
- Date:
- Wed Jan 20 02:34:07 2016 +0000
- Revision:
- 6:5665d427bceb
- Parent:
- 5:d31487b34216
- Child:
- 8:928673148b55
MPU9250-OOP
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
onehorse | 0:2e5e65a6fb30 | 1 | /* MPU9250 Basic Example Code |
onehorse | 0:2e5e65a6fb30 | 2 | by: Kris Winer |
onehorse | 0:2e5e65a6fb30 | 3 | date: April 1, 2014 |
soulx | 3:3e04c1c03cab | 4 | license: Beerware - Use this code however you'd like. If you |
onehorse | 0:2e5e65a6fb30 | 5 | find it useful you can buy me a beer some time. |
soulx | 3:3e04c1c03cab | 6 | |
soulx | 3:3e04c1c03cab | 7 | Demonstrate basic MPU-9250 functionality including parameterizing the register addresses, initializing the sensor, |
soulx | 3:3e04c1c03cab | 8 | getting properly scaled accelerometer, gyroscope, and magnetometer data out. Added display functions to |
soulx | 3:3e04c1c03cab | 9 | allow display to on breadboard monitor. Addition of 9 DoF sensor fusion using open source Madgwick and |
onehorse | 0:2e5e65a6fb30 | 10 | Mahony filter algorithms. Sketch runs on the 3.3 V 8 MHz Pro Mini and the Teensy 3.1. |
soulx | 3:3e04c1c03cab | 11 | |
onehorse | 0:2e5e65a6fb30 | 12 | SDA and SCL should have external pull-up resistors (to 3.3V). |
onehorse | 0:2e5e65a6fb30 | 13 | 10k resistors are on the EMSENSR-9250 breakout board. |
soulx | 3:3e04c1c03cab | 14 | |
onehorse | 0:2e5e65a6fb30 | 15 | Hardware setup: |
onehorse | 0:2e5e65a6fb30 | 16 | MPU9250 Breakout --------- Arduino |
onehorse | 0:2e5e65a6fb30 | 17 | VDD ---------------------- 3.3V |
onehorse | 0:2e5e65a6fb30 | 18 | VDDI --------------------- 3.3V |
onehorse | 0:2e5e65a6fb30 | 19 | SDA ----------------------- A4 |
onehorse | 0:2e5e65a6fb30 | 20 | SCL ----------------------- A5 |
onehorse | 0:2e5e65a6fb30 | 21 | GND ---------------------- GND |
soulx | 3:3e04c1c03cab | 22 | |
soulx | 3:3e04c1c03cab | 23 | Note: The MPU9250 is an I2C sensor and uses the Arduino Wire library. |
onehorse | 0:2e5e65a6fb30 | 24 | Because the sensor is not 5V tolerant, we are using a 3.3 V 8 MHz Pro Mini or a 3.3 V Teensy 3.1. |
onehorse | 0:2e5e65a6fb30 | 25 | We have disabled the internal pull-ups used by the Wire library in the Wire.h/twi.c utility file. |
onehorse | 0:2e5e65a6fb30 | 26 | We are also using the 400 kHz fast I2C mode by setting the TWI_FREQ to 400000L /twi.h utility file. |
onehorse | 0:2e5e65a6fb30 | 27 | */ |
soulx | 3:3e04c1c03cab | 28 | |
soulx | 3:3e04c1c03cab | 29 | //#include "ST_F401_84MHZ.h" |
onehorse | 0:2e5e65a6fb30 | 30 | //F401_init84 myinit(0); |
onehorse | 0:2e5e65a6fb30 | 31 | #include "mbed.h" |
icyzkungz | 6:5665d427bceb | 32 | #include "AHRS.h" |
soulx | 3:3e04c1c03cab | 33 | //#include "N5110.h" |
onehorse | 0:2e5e65a6fb30 | 34 | |
onehorse | 0:2e5e65a6fb30 | 35 | // Using NOKIA 5110 monochrome 84 x 48 pixel display |
onehorse | 0:2e5e65a6fb30 | 36 | // pin 9 - Serial clock out (SCLK) |
onehorse | 0:2e5e65a6fb30 | 37 | // pin 8 - Serial data out (DIN) |
onehorse | 0:2e5e65a6fb30 | 38 | // pin 7 - Data/Command select (D/C) |
onehorse | 0:2e5e65a6fb30 | 39 | // pin 5 - LCD chip select (CS) |
onehorse | 0:2e5e65a6fb30 | 40 | // pin 6 - LCD reset (RST) |
onehorse | 0:2e5e65a6fb30 | 41 | //Adafruit_PCD8544 display = Adafruit_PCD8544(9, 8, 7, 5, 6); |
onehorse | 0:2e5e65a6fb30 | 42 | |
onehorse | 0:2e5e65a6fb30 | 43 | |
icyzkungz | 6:5665d427bceb | 44 | AHRS mpu9250(D15, D14, SERIAL_TX, SERIAL_RX , 0); |
soulx | 3:3e04c1c03cab | 45 | |
soulx | 3:3e04c1c03cab | 46 | Timer t; |
onehorse | 0:2e5e65a6fb30 | 47 | |
soulx | 3:3e04c1c03cab | 48 | Serial pc(USBTX, USBRX); // tx, rx |
icyzkungz | 6:5665d427bceb | 49 | DigitalIn button(USER_BUTTON); |
soulx | 3:3e04c1c03cab | 50 | |
soulx | 3:3e04c1c03cab | 51 | |
onehorse | 0:2e5e65a6fb30 | 52 | int main() |
onehorse | 0:2e5e65a6fb30 | 53 | { |
soulx | 3:3e04c1c03cab | 54 | |
soulx | 3:3e04c1c03cab | 55 | pc.baud(115200); |
soulx | 3:3e04c1c03cab | 56 | |
onehorse | 0:2e5e65a6fb30 | 57 | |
soulx | 3:3e04c1c03cab | 58 | pc.printf("CPU SystemCoreClock is %d Hz\r\n", SystemCoreClock); |
soulx | 3:3e04c1c03cab | 59 | |
soulx | 3:3e04c1c03cab | 60 | t.start(); |
soulx | 3:3e04c1c03cab | 61 | |
soulx | 3:3e04c1c03cab | 62 | |
icyzkungz | 6:5665d427bceb | 63 | mpu9250.Start(); |
soulx | 3:3e04c1c03cab | 64 | |
soulx | 3:3e04c1c03cab | 65 | while(1) { |
icyzkungz | 6:5665d427bceb | 66 | mpu9250.Run(); |
onehorse | 0:2e5e65a6fb30 | 67 | } |
onehorse | 0:2e5e65a6fb30 | 68 | } |