diff --git a/.gitignore b/.gitignore index e257658..ef06222 100644 --- a/.gitignore +++ b/.gitignore @@ -1,3 +1,8 @@ +.pio +.vscode/.browse.c_cpp.db* +.vscode/c_cpp_properties.json +.vscode/launch.json +.vscode/ipch # ---> C++ # Prerequisites *.d @@ -31,4 +36,3 @@ *.exe *.out *.app - diff --git a/receiver/README.md b/receiver/README.md new file mode 100644 index 0000000..210dfd6 --- /dev/null +++ b/receiver/README.md @@ -0,0 +1,7 @@ +#### Board + +https://www.banggood.com/2Pcs-LILYGO-TTGO-433-or-470MHz-SX1278-ESP32-LoRa-0_96-Inch-Blue-OLED-Display-bluetooth-WIFI-Module-p-1271663.html?akmClientCountry=SE&utm_design=18&utm_email=1618462506_2324&utm_source=emarsys&utm_medium=Shipoutinform190813&utm_campaign=trigger-logistics&utm_content=leander&sc_src=email_2671705&sc_eh=b89a072d6be32cd21&sc_llid=28998133&sc_lid=104858042&sc_uid=I3GU9NeuSO&cur_warehouse=CN + +#### PINS +![alt text](doc/board_pins.webp) + diff --git a/receiver/doc/board_pins.webp b/receiver/doc/board_pins.webp new file mode 100644 index 0000000..8f503df Binary files /dev/null and b/receiver/doc/board_pins.webp differ diff --git a/receiver/include/README b/receiver/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/receiver/include/README @@ -0,0 +1,39 @@ + +This directory is intended for project header files. + +A header file is a file containing C declarations and macro definitions +to be shared between several project source files. You request the use of a +header file in your project source file (C, C++, etc) located in `src` folder +by including it, with the C preprocessing directive `#include'. + +```src/main.c + +#include "header.h" + +int main (void) +{ + ... +} +``` + +Including a header file produces the same results as copying the header file +into each source file that needs it. Such copying would be time-consuming +and error-prone. With a header file, the related declarations appear +in only one place. If they need to be changed, they can be changed in one +place, and programs that include the header file will automatically use the +new version when next recompiled. The header file eliminates the labor of +finding and changing all the copies as well as the risk that a failure to +find one copy will result in inconsistencies within a program. + +In C, the usual convention is to give header files names that end with `.h'. +It is most portable to use only letters, digits, dashes, and underscores in +header file names, and at most one dot. + +Read more about using header files in official GCC documentation: + +* Include Syntax +* Include Operation +* Once-Only Headers +* Computed Includes + +https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html diff --git a/receiver/lib/README b/receiver/lib/README new file mode 100644 index 0000000..2593a33 --- /dev/null +++ b/receiver/lib/README @@ -0,0 +1,46 @@ + +This directory is intended for project specific (private) libraries. +PlatformIO will compile them to static libraries and link into executable file. + +The source code of each library should be placed in an own separate directory +("lib/your_library_name/[here are source files]"). + +For example, see a structure of the following two libraries `Foo` and `Bar`: + +|--lib +| | +| |--Bar +| | |--docs +| | |--examples +| | |--src +| | |- Bar.c +| | |- Bar.h +| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html +| | +| |--Foo +| | |- Foo.c +| | |- Foo.h +| | +| |- README --> THIS FILE +| +|- platformio.ini +|--src + |- main.c + +and a contents of `src/main.c`: +``` +#include +#include + +int main (void) +{ + ... +} + +``` + +PlatformIO Library Dependency Finder will find automatically dependent +libraries scanning project source files. + +More information about PlatformIO Library Dependency Finder +- https://docs.platformio.org/page/librarymanager/ldf.html diff --git a/receiver/platformio.ini b/receiver/platformio.ini new file mode 100644 index 0000000..bcee878 --- /dev/null +++ b/receiver/platformio.ini @@ -0,0 +1,18 @@ +; PlatformIO Project Configuration File +; +; Build options: build flags, source filter +; Upload options: custom upload port, speed and extra flags +; Library options: dependencies, extra library storages +; Advanced options: extra scripting +; +; Please visit documentation for the other options and examples +; https://docs.platformio.org/page/projectconf.html + +[env:ttgo-lora32-v1] +platform = espressif32 +board = ttgo-lora32-v1 +framework = arduino +monitor_speed = 115200 +lib_deps = + thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.5.0 + sandeepmistry/LoRa@^0.8.0 diff --git a/receiver/src/main.cpp b/receiver/src/main.cpp new file mode 100644 index 0000000..c58f4c7 --- /dev/null +++ b/receiver/src/main.cpp @@ -0,0 +1,108 @@ +#include "SSD1306.h" // alias for `#include "SSD1306Wire.h"` +#include +#include +#include +// #include "SSD1306.h" +#include + + +//OLED pins to ESP32 GPIOs via this connecthin: +//OLED_SDA GPIO4 +//OLED_SCL GPIO15 +//OLED_RST GPIO16 + +SSD1306 display(0x3c, 4, 15); + + // WIFI_LoRa_32 ports +// GPIO5 SX1278 SCK +// GPIO19 SX1278 MISO +// GPIO27 SX1278 MOSI +// GPIO18 SX1278 CS +// GPIO14 SX1278 RESET +// GPIO26 SX1278 IRQ(Interrupt Request) + +#define SS 18 +#define RST 14 +#define DI0 26 +// #define BAND 429E6 //915E6 + +// #define BAND 434500000.00 +#define BAND 434500000.00 + +#define spreadingFactor 9 +// #define SignalBandwidth 62.5E3 +#define SignalBandwidth 31.25E3 +#define preambleLength 8 +#define codingRateDenominator 8 + +int counter = 0; + +void setup() { + pinMode(25,OUTPUT); //Send success, LED will bright 1 second + + pinMode(16,OUTPUT); + digitalWrite(16, LOW); // set GPIO16 low to reset OLED + delay(50); + digitalWrite(16, HIGH); + + Serial.begin(115200); + while (!Serial); //If just the the basic function, must connect to a computer + +// Initialising the UI will init the display too. + display.init(); + display.flipScreenVertically(); + display.setFont(ArialMT_Plain_10); + display.setTextAlignment(TEXT_ALIGN_LEFT); + display.drawString(5,5,"LoRa Sender"); + display.display(); + + SPI.begin(5,19,27,18); + LoRa.setPins(SS,RST,DI0); + Serial.println("LoRa Sender"); + if (!LoRa.begin(BAND)) { + Serial.println("Starting LoRa failed!"); + while (1); + } + + Serial.print("LoRa Spreading Factor: "); + Serial.println(spreadingFactor); + LoRa.setSpreadingFactor(spreadingFactor); + + Serial.print("LoRa Signal Bandwidth: "); + Serial.println(SignalBandwidth); + LoRa.setSignalBandwidth(SignalBandwidth); + + LoRa.setCodingRate4(codingRateDenominator); + + LoRa.setPreambleLength(preambleLength); + + Serial.println("LoRa Initial OK!"); + display.drawString(5,20,"LoRa Initializing OK!"); + display.display(); + delay(2000); +} + +void loop() { + Serial.print("Sending packet: "); + Serial.println(counter); + + display.clear(); + display.setFont(ArialMT_Plain_16); + display.drawString(3, 5, "Sending packet "); + display.drawString(50, 30, String(counter)); + display.display(); + + // send packet + LoRa.beginPacket(); + LoRa.print("Hello.."); + LoRa.print(counter); + LoRa.endPacket(); + + counter++; + digitalWrite(25, HIGH); // turn the LED on (HIGH is the voltage level) + delay(1000); // wait for a second + digitalWrite(25, LOW); // turn the LED off by making the voltage LOW + delay(1000); // wait for a second + +// delay(3000); +} diff --git a/receiver/test/README b/receiver/test/README new file mode 100644 index 0000000..9b1e87b --- /dev/null +++ b/receiver/test/README @@ -0,0 +1,11 @@ + +This directory is intended for PlatformIO Test Runner and project tests. + +Unit Testing is a software testing method by which individual units of +source code, sets of one or more MCU program modules together with associated +control data, usage procedures, and operating procedures, are tested to +determine whether they are fit for use. Unit testing finds problems early +in the development cycle. + +More information about PlatformIO Unit Testing: +- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html