Diff: main.cpp

Revision:

0:a9f350f894e7

Child:

1:9b9c2989d4eb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 22 21:23:39 2019 +0000
@@ -0,0 +1,87 @@
+#include "mbed.h"
+#include "max32630fthr.h"
+#include "USBSerial.h"
+
+MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
+
+// Hardware serial port over DAPLink
+Serial daplink(P2_1, P2_0);
+
+// Virtual serial port over USB
+USBSerial microUSB; 
+
+DigitalOut rLED(LED1);
+DigitalOut gLED(LED2);
+DigitalOut bLED(LED3);
+
+/* Analog inputs 0 and 1 have internal dividers to allow measuring 5V signals  
+ * The dividers are selected by using inputs AIN_4 and AIN_5 respectively.
+ * The full scale range for AIN0-3 is 1.2V
+ * The full scale range for AIN4-5 is 6.0V
+ */
+AnalogIn ain1(AIN_5);
+const float AIN5_FSV = 6.0f;   /* Full scale value for AIN5 */
+
+float max6613_celsius_to_fahrenheit(float temp_c)
+{
+    float temp_f;
+    temp_f = ((temp_c * 9)/5) + 32;
+    return temp_f;
+}
+// main() runs in its own thread in the OS
+// (note the calls to Thread::wait below for delays)
+/**
+* @brief Sample main program for MAX6613
+* @version 1.0000.0000
+*
+* @details Sample main program for MAX6613
+* The prints are sent to the terminal window (9600, 8n1).
+* The program sets the GPIOs to 3.3V and the program
+* configures the chip and reads temperatures.
+* To run the program, drag and drop the .bin file into the 
+* DAPLINK folder. After it finishes flashing, cycle the power or 
+* reset the Pegasus (MAX32630FTHR) after flashing by pressing the button on
+* the Pegasus next to the battery connector or the button
+* on the MAXREFDES100HDK.
+*/
+int main()
+{
+    float temperature;
+    uint32_t i;
+    const float A = -0.00000225f;
+    const float B = -0.01105f;
+    const float C1 = 1.8455f;
+    float c2;
+    microUSB.printf("micro USB serial port\r\n");
+    rLED = LED_OFF;
+    gLED = LED_ON;
+    bLED = LED_OFF;
+
+    rLED = LED_OFF;
+    temperature = (float)((1.8455f - (AIN5_FSV * ain1)) / 0.01123f);
+//    daplink.printf("AIN1: %1.5f\n", (AIN5_FSV * ain1) );  // analog inputs 1
+
+    daplink.printf("Temperature using Linear Approximation\r\n");
+    for (i = 0; i < 8; i++) {
+        temperature = (float)((1.8455f - (AIN5_FSV * ain1)) / 0.01123f);
+        daplink.printf("temperature: %3.1f degrees C C, %3.1f degrees F\r\n", temperature, max6613_celsius_to_fahrenheit(temperature));
+        wait(2);
+    }
+    daplink.printf("\r\n");
+
+    daplink.printf("Temperature using the Quadratic Equation\r\n");
+    for (i = 0; i < 8; i++) {
+        c2 = AIN5_FSV * ain1;
+        temperature = (-B - sqrt(B*B - 4*A*(C1-c2)))/(2*A);
+        daplink.printf("temperature: %3.1f degrees C C, %3.1f degrees F\r\n", temperature, max6613_celsius_to_fahrenheit(temperature));
+        wait(2);
+    }
+
+    daplink.printf("\r\n");
+
+    while(1) {
+        gLED = !gLED;
+        wait(0.5);
+    }
+}
+