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Commit 5019b86

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add thermal camera to ascii art example
1 parent 10e2ab1 commit 5019b86

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13 files changed

+274
-126
lines changed

13 files changed

+274
-126
lines changed

‎.gitignore‎

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@@ -7,4 +7,6 @@ node_modules
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yarn-error.log
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*.patch
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model.h
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tensorflow
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tensorflow
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.idea/
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examples/.idea/

‎.idea/workspace.xml‎

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‎examples/.idea/examples.iml‎

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‎examples/.idea/misc.xml‎

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‎examples/.idea/modules.xml‎

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‎examples/.idea/vcs.xml‎

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‎examples/.idea/workspace.xml‎

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#pragma once
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#include <Stream.h>
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namespace Eloquent {
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namespace ImageProcessing {
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/**
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*
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* @tparam width
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* @tparam height
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*/
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template<size_t width, size_t height>
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class AsciiArt {
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public:
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AsciiArt(const uint8_t *data) {
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_data = data;
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}
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/**
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* Get pixel at given coordinates
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* @param x
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* @param y
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* @return
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*/
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uint8_t at(size_t x, size_t y) {
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return _data[y * width + x];
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}
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/**
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* Print as ASCII art picture
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* @param stream
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*/
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void print(Stream *stream, uint8_t frameSize = 0) {
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const char glyphs[] = " .,:;xyYX";
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const uint8_t glyphsCount = 9;
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printAsciiArtHorizontalFrame(stream, frameSize);
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for (size_t y = 0; y < height; y++) {
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// vertical frame
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for (uint8_t k = 0; k < frameSize; k++)
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Serial.print('|');
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for (size_t x = 0; x < width; x++) {
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const uint8_t glyph = floor(((uint16_t) at(x, y)) * glyphsCount / 256);
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stream->print(glyphs[glyph]);
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}
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// vertical frame
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for (uint8_t k = 0; k < frameSize; k++)
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Serial.print('|');
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stream->print('\n');
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stream->flush();
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}
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printAsciiArtHorizontalFrame(stream, frameSize);
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}
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protected:
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const uint8_t *_data;
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/**
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*
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* @param stream
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* @param frameSize
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*/
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void printAsciiArtHorizontalFrame(Stream *stream, uint8_t frameSize) {
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for (uint8_t i = 0; i < frameSize; i++) {
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for (size_t j = 0; j < width + 2 * frameSize; j++)
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stream->print('-');
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stream->print('\n');
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stream->flush();
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}
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}
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};
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}
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}
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#pragma once
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#include <Wire.h>
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#include <MLX90640_API.h>
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#include <MLX90640_I2C_Driver.h>
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#ifndef TA_SHIFT
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//Default shift for MLX90640 in open air
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#define TA_SHIFT 8
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#endif
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namespace Eloquent {
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namespace Sensors {
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enum class MLX90640Status {
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OK,
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NOT_CONNECTED,
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DUMP_ERROR,
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PARAMETER_ERROR,
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FRAME_ERROR
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};
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class MLX90640 {
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public:
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/**
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*
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* @param address
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*/
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MLX90640(uint8_t address = 0x33) :
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_address(address),
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_status(MLX90640Status::OK) {
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}
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/**
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*
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* @return
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*/
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bool begin() {
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Wire.begin();
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Wire.setClock(400000);
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return isConnected() && loadParams();
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}
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/**
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*
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* @return
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*/
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bool read(float result[768]) {
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for (byte x = 0 ; x < 2 ; x++) {
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uint16_t frame[834];
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int status = MLX90640_GetFrameData(_address, frame);
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if (status < 0)
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return fail(MLX90640Status::FRAME_ERROR);
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float vdd = MLX90640_GetVdd(frame, &_params);
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float Ta = MLX90640_GetTa(frame, &_params);
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float tr = Ta - TA_SHIFT;
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float emissivity = 0.95;
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MLX90640_CalculateTo(frame, &_params, emissivity, tr, result);
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}
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}
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protected:
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uint8_t _address;
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paramsMLX90640 _params;
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MLX90640Status _status;
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/**
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* Test if device is connected
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* @return
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*/
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bool isConnected() {
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Wire.beginTransmission(_address);
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if (Wire.endTransmission() == 0) {
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return true;
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}
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return fail(MLX90640Status::NOT_CONNECTED);
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}
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/**
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*
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* @return
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*/
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bool loadParams() {
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uint16_t ee[832];
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int status = MLX90640_DumpEE(_address, ee);
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if (status != 0)
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return fail(MLX90640Status::DUMP_ERROR);
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status = MLX90640_ExtractParameters(ee, &_params);
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if (status != 0)
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return fail(MLX90640Status::PARAMETER_ERROR);
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return true;
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}
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/**
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* Mark a failure
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* @param status
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* @return
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*/
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bool fail(MLX90640Status status) {
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_status = status;
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return false;
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}
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};
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}
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}

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