Revision 1:9218b5180bd2, committed 2020-07-12

Comitter:

armo

Date:

Sun Jul 12 18:18:59 2020 +0000

Parent:

0:aed747a24dcd

Commit message:

stm32f103c8t6 using a LM35 sensor. Use a 10uF electrolitic capacitor between groung and signal pns of LM35.

Changed in this revision

--- a/main.cpp	Wed May 08 08:57:08 2013 +0000
+++ b/main.cpp	Sun Jul 12 18:18:59 2020 +0000
@@ -1,37 +1,45 @@
+/**********************************************************************************************************/
+/* ATTENTION: You have to put a 10uF electrolict capacitor between the ground and signal terminals of LM35*/
+/**********************************************************************************************************/
 #include "mbed.h"
 #include "TextLCD.h"
 
-AnalogIn LM35(p15);
+AnalogIn LM35(PA_6);
+TextLCD lcd(PA_12,PA_11, PB_6, PB_5, PB_4, PB_3);
+Serial pc(PA_9, PA_10);    //Create an object of Serial Class PA_9=RX, PA_10=TX no FTDI
 
-TextLCD lcd(p21,p22,p23,p24,p25,p26);
+/*TextLCD lcd(p21,p22,p23,p24,p25,p26);*/
 
 int main()
 {
- float tempC,tempF,a[10],avg;
+ double tempC,tempF,avg;//,a[49];
  int i;
- 
+ unsigned short a[99];
  while(1)
  {
  
- avg=0;
-for(i=0;i<10;i++)
+avg=0;
+for(i=0;i<99 ;i++)
 {
-a[i]=LM35.read();
+a[i]=LM35.read_u16();
 wait(.02);
 }
-for(i=0;i<10;i++)
+for(i=0;i<99;i++)
 {
-avg=avg+(a[i]/10);
+avg=avg+(a[i]/100);
 }
 
 
-tempC=(avg*3.685503686*100);
-tempF=(9.0*tempC)/5.0 + 32.0;
+tempC=(((avg*3.3)/65535)*100);//3.685503686
+
+
+//tempF=(9.0*tempC)/5.0 + 32.0;
+
 lcd.locate(0,0);
-lcd.printf("  Temperature   ");
+//lcd.printf("  Temperature   ");
 lcd.locate(0,1);
-lcd.printf("%.2f C %.2f F",tempC,tempF);
-
+lcd.printf("%.2f \n %.0f",tempC,avg);
+pc.printf("%.2f \n\r",tempC);/*This line is to monitoring de temp values on a Terminal*/
 wait(.5);      
     }
  }
\ No newline at end of file

--- a/mbed.bld	Wed May 08 08:57:08 2013 +0000
+++ b/mbed.bld	Sun Jul 12 18:18:59 2020 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/7e6c9f46b3bd
\ No newline at end of file
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file