Add basic Arduino example

The C++/Arduino wrapper is used on top of the portable C code

Author: oclyke

examples/Arduino/Example1_Basics_I2C/Example1_Basics_I2C.ino

@@ -0,0 +1,13 @@
+#include "ICM_20948.h"
+
+ICM_20948_I2C myIC;
+
+void setup() {
+  // put your setup code here, to run once:
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}

…rectTesting/Example999_DirectTesting.ino …rectTesting/Example999_DirectTesting.inoexamples/Example999_DirectTesting/Example999_DirectTesting.ino renamed to examples/PortableC/Example999_DirectTesting/Example999_DirectTesting.ino examples/Example999_DirectTesting/Example999_DirectTesting.ino renamed to examples/PortableC/Example999_DirectTesting/Example999_DirectTesting.ino

@@ -10,6 +10,87 @@ ICM_20948_Status_e ICM_20948_read_SPI(uint8_t reg, uint8_t* buff, uint32_t len,
 
 
 
+// Base
+ICM_20948::ICM_20948(){
+
+}
+
+
+
+
+
+
+
+
+// I2C
+ICM_20948_I2C::ICM_20948_I2C(){
+
+}
+
+ICM_20948_Status_e ICM_20948_I2C::begin(TwoWire &wirePort, bool ad0val, uint8_t ad0pin){
+    // Associate 
+	_ad0 = ad0pin;
+	_i2c = &wirePort;
+	_ad0val = ad0val;
+
+    // Set pinmodes
+	if(_ad0 != ICM_20948_ARD_UNUSED_PIN){ pinMode(_ad0, OUTPUT); }
+
+    // Set pins to default positions
+	if(_ad0 != ICM_20948_ARD_UNUSED_PIN){ digitalWrite(_ad0, _ad0val); }
+
+    // _i2c->begin(); // Moved into user's sketch
+
+    // Set up the serif
+    _serif.write = ICM_20948_write_I2C;
+    _serif.read = ICM_20948_read_I2C;
+    _serif.user = (void*)this;              // refer to yourself in the user field
+
+    // Link the serif
+    _device._serif = &_serif;
+
+    return ICM_20948_Stat_Ok;
+}
+
+
+
+
+
+
+
+// SPI
+SPISettings ICM_20948_SPI_DEFAULT_SETTINGS(ICM_20948_SPI_DEFAULT_FREQ, ICM_20948_SPI_DEFAULT_ORDER, ICM_20948_SPI_DEFAULT_MODE);
+
+ICM_20948_SPI::ICM_20948_SPI(){
+
+}
+
+ICM_20948_Status_e ICM_20948_SPI::begin( uint8_t csPin, SPIClass &spiPort){
+    // Associate
+    _spi = &spiPort;
+    _spisettings = ICM_20948_SPI_DEFAULT_SETTINGS;
+	_cs = csPin;
+
+
+	// Set pinmodes
+	pinMode(_cs, OUTPUT);
+
+	// Set pins to default positions
+	digitalWrite(_cs, HIGH);
+
+    // _spi->begin(); // Moved into user's sketch
+
+    // Set up the serif
+    _serif.write = ICM_20948_write_SPI;
+    _serif.read = ICM_20948_read_SPI;
+    _serif.user = (void*)this;              // refer to yourself in the user field
+
+    // Link the serif
+    _device._serif = &_serif;
+
+    return ICM_20948_Stat_Ok;
+}
+
 
 
 

…9_I2C_Testing/Example999_I2C_Testing.ino …ting/Example999_Portable_I2C_Testing.inoexamples/Example999_I2C_Testing/Example999_I2C_Testing.ino renamed to examples/PortableC/Example999_Portable_I2C_Testing/Example999_Portable_I2C_Testing.ino examples/Example999_I2C_Testing/Example999_I2C_Testing.ino renamed to examples/PortableC/Example999_Portable_I2C_Testing/Example999_Portable_I2C_Testing.ino

@@ -9,43 +9,60 @@ A C++ interface to the ICM-20948
 
 #include "util/ICM_20948_C.h"	// The C backbone
 
-#include "Wire.h"   // Arduino support
+#include "Arduino.h"   // Arduino support
+#include "Wire.h"
 #include "SPI.h"
 
+#define ICM_20948_ARD_UNUSED_PIN 0xFF
+
+
+// Base
 class ICM_20948 {
 private:
 protected:
-    ICM_20948_Device_t device;
+    ICM_20948_Device_t _device;
 public:
 
+    ICM_20948();
 };
 
 
-
-class ICM_20948_I2C {
+// I2C
+class ICM_20948_I2C : public ICM_20948 {
 private:
 protected:
 public:
-    TwoWire*    _i2c;
-    uint8_t     _addr;
+    TwoWire*                _i2c;
+    uint8_t                 _addr;
+    uint8_t                 _ad0;
+    bool                    _ad0val;
+    ICM_20948_Serif_t       _serif;
 
     ICM_20948_I2C(); // Constructor
 
+    ICM_20948_Status_e begin(TwoWire &wirePort = Wire, bool ad0val = true, uint8_t ad0pin = ICM_20948_ARD_UNUSED_PIN);
 
 };
 
 
-class ICM_20948_SPI {
+
+// SPI
+#define ICM_20948_SPI_DEFAULT_FREQ 1000000
+#define ICM_20948_SPI_DEFAULT_ORDER MSBFIRST
+#define ICM_20948_SPI_DEFAULT_MODE SPI_MODE3
+
+class ICM_20948_SPI : public ICM_20948 {
 private:
 protected:
 public:
-    SPIClass*   _spi;
-    SPISettings _spisettings;
-    uint8_t     _cs;
+    SPIClass*               _spi;
+    SPISettings             _spisettings;
+    uint8_t                 _cs;
+    ICM_20948_Serif_t       _serif;
 
     ICM_20948_SPI(); // Constructor
 
-    ICM_20948_Status_e begin();
+    ICM_20948_Status_e begin( uint8_t csPin, SPIClass &spiPort);
 
     // read(  )
 };