Diff: mbed_objects.cpp

Revision:

0:6ddf88b49483

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_objects.cpp	Thu Oct 26 18:40:57 2017 +0000
@@ -0,0 +1,37 @@
+// The purpose of this file and associated header file is to 
+// enable globalization of mbed platform specific objects
+// for all source files to utilize
+
+#include "mbed_objects.h"
+
+//******************************
+// MBED Library instatiations 
+//******************************
+
+I2C i2c(I2C_SDA, I2C_SCL);
+Serial pc(USBTX, USBRX);
+
+DigitalIn DRDY_PIN(D8);
+
+// MBED native READ/ WRITE functions
+unsigned int rm3100_i2c_write(char registerAddress, char* buffer, short int length)
+{
+    char writeBuffer[MAX_I2C_WRITE + 1];
+    writeBuffer[0] = registerAddress;
+    memcpy(&writeBuffer[1], buffer, length);
+    //i2c.write(RM3100_I2C_ADDRESS_8bit, const char *data, int length, 1);
+    // returns 0 on success (ack), non-0 on failure (nack)
+    int status = i2c.write(RM3100_I2C_ADDRESS_8bit, writeBuffer, length+1, 0);
+    return !status; // return True if successfull. mbed:0=Success
+}
+
+unsigned int rm3100_i2c_read(char registerAddress, char* buffer, short int length)
+{
+    char writeBuffer[1] = {registerAddress};
+    i2c.write(RM3100_I2C_ADDRESS_8bit, writeBuffer, 1, 1);
+    int status = i2c.read(RM3100_I2C_ADDRESS_8bit, buffer, length, 0);
+    if (!status) //mbed:0=Success
+        return length;
+    else
+        return 0;
+}