Simple square wave generator using MAX32630FTHR and a potentiometer.

Dependencies:   max32630fthr

Files at this revision

API Documentation at this revision

Comitter:
j3
Date:
Wed Jul 05 22:49:24 2017 +0000
Child:
1:649584ec899f
Commit message:
init commit

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
max32630fthr.lib Show annotated file Show diff for this revision Revisions of this file
mbed-os.lib Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jul 05 22:49:24 2017 +0000
@@ -0,0 +1,80 @@
+/******************************************************************************
+* MIT License
+*
+* Copyright (c) 2017 Justin J. Jordan
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+ 
+* The above copyright notice and this permission notice shall be included in all
+* copies or substantial portions of the Software.
+ 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+******************************************************************************/
+
+
+//Demo uses pot connected between 3.3 and GND with wiper on AIN_0.
+//SQWV is generated on P4_0
+
+
+#include "mbed.h"
+#include "max32630fthr.h"
+#include "adc.h"
+
+
+int main()
+{
+    MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
+    
+    MBED_ASSERT(ADC_Init() == E_NO_ERROR);
+    
+    //Init pwm signal
+    PwmOut pwmOut(P4_0);
+    pwmOut.write(0.5F);
+    
+    uint16_t rawADCdata;
+    float volts = 0.0F;
+    float period = 0.0F;
+    
+    pwmOut.period_us(period);
+    
+    printf("\033[H");  //home
+    printf("\033[0J"); //erase from cursor to end of screen
+    
+    //loop
+    while(1)
+    {   
+        //Do ADC conversion
+        ADC_StartConvert(ADC_CH_0_DIV_5, 1, 1);
+        ADC_GetData(&rawADCdata);
+        
+        //Get ADC value in volts
+        volts = ((6.0F * rawADCdata) / 1023.0F);
+        
+        //convert to percentage for pwm
+        period = (volts / 3.3F);
+        if(period > 1.0F)
+        {
+            period = 1.0F;
+        }
+        pwmOut.period_us(period);
+        
+        //Display data
+        printf("Raw Data = 0x%04x\r\n", rawADCdata);
+        printf("Volts    = %3.2f\r\n", volts);
+        printf("Period   = %3.2f\r\n", period);
+        printf("\033[H");  //home
+        
+        wait(0.1F);
+    }
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max32630fthr.lib	Wed Jul 05 22:49:24 2017 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/teams/MaximIntegrated/code/max32630fthr/#60997adf01a2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Wed Jul 05 22:49:24 2017 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#8828635da469162cf2854b5287561c663fb96e72