Cannot invoke 3X3 convolution in Arduino IDE

[caleb221]

Hi! I am trying to invode dl_matrix3dqq_conv_3x3() in the Arduino IDE in order to do some deep learning classification but the compiler cant find the function in the library, what do i do?? after creating a quantized matrix I can use other functions in the library (ReLu, PreRelu, allocation, etc..) but when it comes to the convolution operations I get the following error:

ESP32_DeepNet_attempt:219:12: error: 'dl_matrix3dqq_conv_3x3' was not declared in this scope outMatrix=dl_matrix3dqq_conv_3x3(qMatrix,qMatrix,2,2,0,2,"test"); ^ exit status 1 'dl_matrix3dqq_conv_3x3' was not declared in this scope

when it is defined in dl_lib_matrix3dq.h library as:

/**

@brief Do 1x1 convolution with an 8-bit fixed point matrix, with bias adding @param out Preallocated quantized matrix, size (1, w, h, n) @param in Input matrix, size (1, w, h, c) @param filter 1x1 filter, size (n, 1, 1, c) @param bias Bias, size (1, 1, 1, n) @param mode Implementation mode / void dl_matrix3duq_conv_1x1_with_bias(dl_matrix3dq_t out, dl_matrix3du_t in, dl_matrix3dq_t filter, dl_matrix3dq_t bias, dl_conv_mode mode, char name); // // Conv 3x3 //

Hardware: Board: ESP32-Cam Core Installation version: 1.0.4 IDE name: Arduino IDE Flash Frequency: 40Mhz PSRAM enabled: yes Upload Speed: 115200 Computer OS: Ubuntu

[XiaochaoGONG]

Hi, since you can refer to other functions declared in the dl_matrix3dq.h, you should normally can use dl_matrix3dqq_conv_3x3 as well. Can you use other 1x1 or 3x3 functions ?

[caleb221]

Every function defined in the .h as dl_matrix3dq_t *dl_matrix...... cannot be used, but any function defined with void dl_matrix... can be used I'm not sure what I'm doing wrong

[XiaochaoGONG]

Seems the compiler doesn't know the dl_matrix3dq_t * functions... What is the compiler the Arduino IDE using ? And one thing need to be confirmed that is make or idf.py(cmake) also meet that strange thing? I've tested on my side without any problem yet.

[caleb221]

yeah, the compiler should be using the same as espressif V1.0.0.4 (gcc i believe) using the program void setup(){ Serial.begin(115200); Serial.print("C++ STANDARD: "); Serial.println(__cplusplus); } void loop(){}

outputs: C++ VERSION: 201103

Another odd thing, when i tried directly moving the library into the project folder I got errors concerning redefinitions of the same dl_matrix_3dq_t* functions, so the compiler should know the functions exist (it does when there are 2 of them) but it won't let me invoke them.

Thanks for your help on this, its really odd and I need to get a model up and running for a research project thats due in a few weeks

[XiaochaoGONG]

Try adding extern "C" before the declaration of those funcions in header files. The libraries are build with C, the C++ compiler would adding some suffix to distinguish their override functions.

[caleb221]

adding extern "C" {} doesn't fix it.

I've gotten a successful compile on idf.py build using: dl_matrix3d_t deepLearn(dl_matrix3d_t in , dl_matrix3d_t filter, dl_padding_type padding) { dl_matrix3d_t bias = dl_matrix3d_alloc(1, 1, 1, outp); dl_matrix3d_t *result; result = dl_matrix3dff_conv_3x3(in,filter,bias,2,2,PADDING_SAME); return result;
}

But i guess just for future reference the library really doesn't like Arduino IDE for some reason. Thanks for all your help I really appreciate it!

**i know its not really a part of this issue but if you could help explain to me the process of linking the libraries in cmake i would really really appreciate it ***