LeafLabs Garden » Topic: i2cdevlib, mpu-6050 and maple ide

LeafLabs Garden » Topic: i2cdevlib, mpu-6050 and maple ide http://forums.leaflabs.com/topic.php?id=74052 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:24:52 +0000 http://bbpress.org/?v=1.0.2 <![CDATA[Search]]> q http://forums.leaflabs.com/search.php cambazz on "i2cdevlib, mpu-6050 and maple ide" http://forums.leaflabs.com/topic.php?id=74052#post-104777 Sun, 13 Oct 2013 06:49:50 +0000 cambazz 104777@http://forums.leaflabs.com/ Well the program runs on maple mini, unfortunately, only producing output with all values that are 0. It can not connect and identify the mpu6050. upon further testing I found out that: bool MPU6050::testConnection() { return getDeviceID() == 0x34; } always returns false, since deviceID is always zero. I am suspecting the i2c is not working as it is supposed to be. Best Regards, C.B. cambazz on "i2cdevlib, mpu-6050 and maple ide" http://forums.leaflabs.com/topic.php?id=74052#post-104776 Sun, 13 Oct 2013 05:59:32 +0000 cambazz 104776@http://forums.leaflabs.com/ So I progressed even more: I had to add: #include <stdint.h> #include <stdlib.h> #include <string.h> #include "MPU6050.h" typedef const unsigned char prog_uchar; #define pgm_read_byte_near(x) (*(prog_uchar*)x) #define pgm_read_byte(x) (*(prog_uchar*)x) The first 3 includes takes care of malloc, free and memcmp, while the typedefs redefine this pgm_read_byte function. (this declaration was on leaflabs docs) So when I compile the program I get the output below: Going to build using 'armcompiler' (ARM) Compiling core... Compiling libraries: Wire Compiling the sketch... In member function 'bool MPU6050::writeMemoryBlock(const uint8_t*, uint16_t, uint8_t, uint8_t, bool, bool)': In member function 'bool MPU6050::writeDMPConfigurationSet(const uint8_t*, uint16_t, bool)': Linking... Computing sketch size... C:\Users\seg\AppData\Local\Temp\build5555698171104260142.tmp\MPU51.cpp.bin : section size addr .data 17600 0 Total 17600 Binary sketch size is reported above. Check it against a 108000 byte maximum. -- the part which it complains about writeMemoryBlock, writeDMPConfigurationSet - is in red. I dont know what this means. I will actually hookup the circuit now, and test if it really works. However the i2c implementation is still in question. Best Regards, -C.B. cambazz on "i2cdevlib, mpu-6050 and maple ide" http://forums.leaflabs.com/topic.php?id=74052#post-104774 Sat, 12 Oct 2013 16:11:18 +0000 cambazz 104774@http://forums.leaflabs.com/ So I fixed things more, by including wire.h on the cpp files. now the mpu6050 needs things like malloc, memcp, and free - This could be a naive attempt, but I am trying to port it by fixing errors. malloc and memcmp has to do with memory allocation and i am not sure if it is the same in maple. Best regards, C.B. <BUILD>\MPU6050.cpp:2975: error: 'malloc' was not declared in this scope <BUILD>\MPU6050.cpp:2988: error: 'pgm_read_byte' was not declared in this scope <BUILD>\MPU6050.cpp:3001: error: 'memcmp' was not declared in this scope <BUILD>\MPU6050.cpp:3019: error: 'free' was not declared in this scope cambazz on "i2cdevlib, mpu-6050 and maple ide" http://forums.leaflabs.com/topic.php?id=74052#post-104773 Sat, 12 Oct 2013 15:49:26 +0000 cambazz 104773@http://forums.leaflabs.com/ Hello, So this fixed my problem, and I am trying to make this library with maple. This library uses arduino's wire library, and there are different implementations of using Wire depending on the arduino version. What is the proper way to use i2c in maple? Would it be really diffucult to port this to the lowlevel i2c as in maplelib? Also, from cpp files we have in the project it can not call millis() and Wire.xx - am I mussing another include? Best regards, C.B. gbulmer on "i2cdevlib, mpu-6050 and maple ide" http://forums.leaflabs.com/topic.php?id=74052#post-104770 Sat, 12 Oct 2013 12:05:32 +0000 gbulmer 104770@http://forums.leaflabs.com/ cambazz int8_t, uint8_t, uint16_t etc are defined in the header stdint.h. So put <code>#include <stdint.h></code> near the top of your source code. cambazz on "i2cdevlib, mpu-6050 and maple ide" http://forums.leaflabs.com/topic.php?id=74052#post-104769 Sat, 12 Oct 2013 11:08:30 +0000 cambazz 104769@http://forums.leaflabs.com/ Hello, I am trying to get the code for the mpu 6050 accelmeter + gyro with mapleboard. Although there are many ways of doing this, I would like to get this code running: <a href="https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050" rel="nofollow">https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050</a> So basically, I have copied I2Cdev.cpp and I2Cdev.h, along with MPU6050.cpp and MPU6050.h, and tried to verify the code, and I get bunch of errors. Namely: <BUILD>/I2Cdev.h:94: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:95: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:96: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:97: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:98: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:99: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:100: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:101: error: 'int8_t' does not name a type <BUILD>/I2Cdev.h:103: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:103: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:103: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:103: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:104: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:104: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:104: error: 'uint8_t' has not been declared <BUILD>/I2Cdev.h:104: error: 'uint16_t' has not been declared So are there no uint8_t, uint16_t, int8_t in maple ide? or am I getting something wrong? Best Regards, C.B.