Diff: commHeaders/SPIcommFunctions.h

Revision:

2:4c248212e354

Parent:

1:67d6484416a6

diff -r 67d6484416a6 -r 4c248212e354 commHeaders/SPIcommFunctions.h
--- a/commHeaders/SPIcommFunctions.h	Tue Oct 30 21:14:15 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,106 +0,0 @@
-#define SPImode                                     //Used to check if the sensor is in I2C mode or SPI mode.
-
-//=========================================================================
-//Communication pinouts for serial COM port, SPI, and interrupts
-//=========================================================================
-static Serial pc(USBTX, USBRX);                     //PC comm
-static SPI spi(p23, p24, p25);                      //mosi, miso, sclk
-static DigitalOut cs(p22);                          //chip select
-static DigitalOut shutdown(p20);                    //Shutdown pin
-static DigitalOut IO_sel(p19);                      //IO interface selection pin (I2C and SPI)
-
-
-//=========================================================================
-//Variables and arrays used for communications and data storage
-//=========================================================================
-int8_t deltaX, deltaY;                              //Stores the value of one individual motion report.
-int totalX, totalY = 0;                          //Stores the total deltaX and deltaY moved during runtime.
-
-
-//=========================================================================
-//Functions used to communicate with the sensor and grab/print data
-//=========================================================================
-uint8_t readRegister(uint8_t addr);
-//This function takes an 8-bit address in the form 0x00 and returns an 8-bit value in the form 0x00.
-
-void writeRegister(uint8_t addr, uint8_t data);
-//This function takes an 8-bit address and 8-bit data. Writes the given data to the given address.
-
-void load(const uint8_t array[][2], uint8_t arraySize);
-//Takes an array of registers/data (found in registerArrays.h) and their size and writes in all the values.
-
-void grabData(void);
-//Grabs the deltaX and deltaY information from the proper registers and formats it into the proper format.
-
-void printData(void);
-//Prints the data out to a serial terminal.
-
-
-
-
-
-//=========================================================================
-//Functions definitions
-//=========================================================================
-uint8_t readRegister(uint8_t addr)
-{
-    cs = 0;                                 //Set chip select low/active
-    addr = addr & 0x7F;                     //Set MSB to 0 to indicate read operation
-    spi.write(addr);                        //Write the given address
-    wait_us(5);
-    uint8_t data_read = spi.write(0x00);    //Throw dummy byte after sending address to receieve data
-    wait_us(30);
-    cs = 1;                                 //Set chip select back to high/inactive
-    return data_read;                       //Returns 8-bit data from register
-}
-
-
-//=========================================================================
-void writeRegister(uint8_t addr, uint8_t data)
-{
-    cs = 0;                         //Set chip select low/active
-    addr = addr | 0x80;             //Set MSB to 1 to indicate write operation
-    spi.write(addr);                //Write the given address
-    spi.write(data);                //Write the given data
-    cs = 1;                         //Set chip select back to high/inactive
-    wait_us(30);                    //Wait time between write commands.
-    
-    //pc.printf("R:%2X, D:%2X\n\r", addr, readRegister(addr));
-            //Uncomment this line for debugging. Prints every register write operation.
-}
-
-
-//=========================================================================
-void load(const uint8_t array[][2], uint8_t arraySize)
-{
-    for(uint8_t q = 0; q < arraySize; q++)
-    {
-        writeRegister(array[q][0], array[q][1]);    //Writes the given array of registers/data.
-    }
-}
-
-
-//=========================================================================
-void grabData(void)
-{
-    deltaX = readRegister(0x03);        //Grabs data from the proper registers.
-    deltaY = readRegister(0x04);
-    writeRegister(0x02, 0x00);          //Clear EVENT and motion registers.
-}
-
-
-//=========================================================================
-void printData(void)
-{
-    if((deltaX != 0) || (deltaY != 0))      //If there is deltaX or deltaY movement, print the data.
-    {
-        totalX += deltaX;
-        totalY += deltaY;
-        
-        pc.printf("deltaX: %d\t\t\tdeltaY: %d\n\r", deltaX, deltaY);    //Prints each individual count of deltaX and deltaY.
-        pc.printf("X-axis Counts: %d\t\tY-axis Counts: %d\n\r", totalX, totalY);  //Prints the total movement made during runtime.
-    }
-    
-    deltaX = 0;                             //Resets deltaX and Y values to zero, otherwise previous data is stored until overwritten.
-    deltaY = 0;
-}