Diff: main.cpp

Revision:

0:2ca5fe3fc968

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Mar 09 10:53:26 2019 +0000
@@ -0,0 +1,131 @@
+// libraries //
+#include "mbed.h"
+#include "LIS3DSH.h"
+///////////////////////////////////////////////////////////////
+
+// **see DocID022256 rev6 (google it) page 27-31 schematic** //
+// Note: following pins are connected to onboard hardware //
+///////////////////////////////////////////////////////////////
+// i/o initialization //
+DigitalOut rLED(PD_14);   // on board red LED, DO
+DigitalOut bLED(PD_15);   // on board blue LED. DO
+DigitalOut gLED(PD_12);   // on board green LED, DO
+DigitalOut oLED(PD_13);   // on board orange LED, DO
+PwmOut GLED(PA_9);        // on board green LED, PWM
+DigitalIn  pbSW(PA_0);    // on board blue PUSH Switch, active high DI
+// DAC tested, it works //
+//AnalogOut dac1(PA_5); //
+//AnalogOut dac2(PA_4);
+
+/////////////////////////////////////////////////////////////////
+// on board accerometer  mosi, miso, clk , cs  pins //
+LIS3DSH acc(PA_7, PA_6, PA_5, PE_3);
+// INT1 PE_0
+// INT2 PE_1
+/////////////////////////////////////////////////////////////////
+// on board digital mic MP45DT02//
+DigitalOut mic_clk(PB_10);
+DigitalIn mic_data(PC_3);
+// on board audio dac CS43L22 //
+// Audio_SDA PB_9
+// Audio_SCL PB_6
+// Audio_RST PD_4
+// DAC_Out PA_4
+// PDM_Out PC_4
+// ISS_MCK PC_7
+// ISS_CLK PC_10
+// ISS_SDI  PC_12
+// ISS_WS PA_4
+//////////////////////////////////////////////////////////////////
+Serial serial(PA_2,PA_3); // serial com tx, rx UART
+AnalogIn   adcPB0(PB_0);  // PB0 as 12 bit ADC
+
+
+// variables declearation //
+double delay = .2;     // delay variable for wait 
+double freq = 1000.0f;  // pwm frequency variable upto 84 Mhz
+double duty = 50.0f;    // duty cycle of pwm variable 0.0 - 99.9
+uint16_t adcval=0;      // adc value capture variable
+int16_t X, Y, Z;        // signed integer variables for X,Y,Z values
+float roll, pitch;      // float variables for angle
+// main code //
+int main() 
+{
+     //////////////////////////////////////////////////////////////
+      // set serial baud and print welcome msg //
+    serial.baud(19200);
+    serial.printf("Welcome to STM32F407 Development with mbedOS \n\r");
+                  
+             
+       GLED.period(1.0f/freq);  // set pwm period      
+       GLED.write(duty/100.0f); // set pwm duty cycle
+    while(1) 
+    { 
+        //////////////////////////////////////////////////////////// 
+         // on board RGBO LED blink //
+               // set up 1 volt on dac 1
+               //dac1 = 0.333f; // vdd* 0.333 = 3.0*0.333 =  1.0 volt
+               // set up 1.5 volt on dac 2
+               //dac2 = 0.5f; // vdd*0.5 = 1.5 volt
+
+       
+                rLED = 1;
+                gLED = 1;
+                wait(delay);
+                rLED = 0;
+                gLED = 0;
+                wait(delay);            
+                bLED = 1;
+                oLED = 1;
+                wait(delay);
+                bLED = 0; 
+                oLED = 0;
+                wait(delay);
+          //////////////////////////////////////////////////////////////////      
+          // on board user push switch test // 
+                if (pbSW==1) 
+                 {
+                      // adc value read //         
+                   adcval = 4095*adcPB0.read_u16()/65535; // 12 bit value
+                      // serial message //
+          ///////////////////////////////////////////////////////////////////
+                      
+                   serial.printf("Button Pressed\n\r");
+                   serial.printf("ADC on PB0: %d\n\r", adcval);
+                   delay=delay+.05;
+                   wait(.2);
+          //////////////////////////////////////////////////////////////////         
+                      // PWM fading green LED 2 //
+                   for(double i=0.0; i<1.0;i=i+0.01)
+                    {
+                      GLED.write(i); // duty cycle changing
+                      wait(.01);
+                    }
+              
+                   for(double i=0.0; i<1.0;i=i+0.01)
+                    {
+                      GLED.write(1.0-i); // duty cycle changing
+                      wait(.01);
+                    }
+                   }// end of if //   
+            /////////////////////////////////////////////////////////////////
+            // on board accerometer //  
+            if(acc.Detect() != 1)
+             {
+              serial.printf("LIS3DSH acceromoter not detected!\n\r");
+             }
+             else
+             {
+              serial.printf("LIS3DSH acceromoter detected! , Reading now\n\r");
+              acc.ReadData(&X, &Y, &Z);           // reads X, Y, Z values
+              acc.ReadAngles(&roll, &pitch);      // reads roll and pitch angles
+              serial.printf("X: %d  Y: %d  Z: %d\n\r", X, Y, Z);
+              serial.printf("Roll: %f   Pitch: %f\n\r", roll, pitch);
+              // divide raw value by 1750 to get acceleration in m/s^2 //
+             }     
+             ///////////////////////////////////////////////////////////////
+  
+     
+                 
+    }// end of while //
+}// end of main