From ae72fedd36f55dc12709a59b0f345251ef9bf072 Mon Sep 17 00:00:00 2001 From: hans-jurgen Date: Sun, 29 Sep 2024 13:04:01 +0200 Subject: [PATCH] 2024-09-2900 --- .gitignore | 5 +++ .vscode/extensions.json | 10 ++++++ include/README | 39 ++++++++++++++++++++++ lib/README | 46 ++++++++++++++++++++++++++ platformio.ini | 16 +++++++++ src/main.cpp | 73 +++++++++++++++++++++++++++++++++++++++++ test/README | 11 +++++++ 7 files changed, 200 insertions(+) create mode 100644 .gitignore create mode 100644 .vscode/extensions.json create mode 100644 include/README create mode 100644 lib/README create mode 100644 platformio.ini create mode 100644 src/main.cpp create mode 100644 test/README diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..89cc49c --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +.pio +.vscode/.browse.c_cpp.db* +.vscode/c_cpp_properties.json +.vscode/launch.json +.vscode/ipch diff --git a/.vscode/extensions.json b/.vscode/extensions.json new file mode 100644 index 0000000..080e70d --- /dev/null +++ b/.vscode/extensions.json @@ -0,0 +1,10 @@ +{ + // See http://go.microsoft.com/fwlink/?LinkId=827846 + // for the documentation about the extensions.json format + "recommendations": [ + "platformio.platformio-ide" + ], + "unwantedRecommendations": [ + "ms-vscode.cpptools-extension-pack" + ] +} diff --git a/include/README b/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/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/lib/README b/lib/README new file mode 100644 index 0000000..2593a33 --- /dev/null +++ b/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/platformio.ini b/platformio.ini new file mode 100644 index 0000000..c9690e8 --- /dev/null +++ b/platformio.ini @@ -0,0 +1,16 @@ +; 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:d1] +platform = espressif8266 +board = d1 +framework = arduino +monitor_speed = 74800 +monitor_port = /dev/ttyUSB0 \ No newline at end of file diff --git a/src/main.cpp b/src/main.cpp new file mode 100644 index 0000000..6fa2f62 --- /dev/null +++ b/src/main.cpp @@ -0,0 +1,73 @@ +#include + +/* +* i2c_port_address_scanner +* Scans ports D0 to D7 on an ESP8266 and searches for I2C device. based on the original code +* available on Arduino.cc and later improved by user Krodal and Nick Gammon (www.gammon.com.au/forum/?id=10896) +* D8 throws exceptions thus it has been left out +* +*/ + +#include + +void scanPorts(); +void check_if_exist_I2C(); + +void setup() { + Serial.begin(74800); + while (!Serial); // Leonardo: wait for serial monitor + Serial.println("\n\nI2C Scanner to scan for devices on each port pair D0 to D7"); + scanPorts(); +} + +uint8_t portArray[] = {16, 5, 4, 0, 2, 14, 12, 13}; +String portMap[] = {"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7"}; //for Wemos +//String portMap[] = {"GPIO16", "GPIO5", "GPIO4", "GPIO0", "GPIO2", "GPIO14", "GPIO12", "GPIO13"}; + +void scanPorts() { + for (uint8_t i = 0; i < sizeof(portArray); i++) { + for (uint8_t j = 0; j < sizeof(portArray); j++) { + if (i != j){ + Serial.print("Scanning (SDA : SCL) - " + portMap[i] + " : " + portMap[j] + " - "); + Wire.begin(portArray[i], portArray[j]); + check_if_exist_I2C(); + } + } + } +} + +void check_if_exist_I2C() { + byte error, address; + int nDevices; + nDevices = 0; + for (address = 1; address < 127; address++ ) { + // The i2c_scanner uses the return value of + // the Write.endTransmisstion to see if + // a device did acknowledge to the address. + Wire.beginTransmission(address); + error = Wire.endTransmission(); + + if (error == 0){ + Serial.print("I2C device found at address 0x"); + if (address < 16) + Serial.print("0"); + Serial.print(address, HEX); + Serial.println(" !"); + + nDevices++; + } else if (error == 4) { + Serial.print("Unknow error at address 0x"); + if (address < 16) + Serial.print("0"); + Serial.println(address, HEX); + } + } //for loop + if (nDevices == 0) + Serial.println("No I2C devices found"); + else + Serial.println("**********************************\n"); + //delay(1000); // wait 1 seconds for next scan, did not find it necessary +} + +void loop() { +} \ No newline at end of file diff --git a/test/README b/test/README new file mode 100644 index 0000000..9b1e87b --- /dev/null +++ b/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