Daniel Scarnatto
Simple analog input and LCD 4 bit Example reading a LM35. Tested in BluePill board
Revision 2:93417af6f469, committed 2020-07-28
- Comitter:
- dscarnatto
- Date:
- Tue Jul 28 09:20:47 2020 +0000
- Parent:
- 1:e10c603cf0ae
- Commit message:
- first commit;
Changed in this revision
--- a/main.cpp Tue Feb 05 14:00:02 2019 +0000
+++ b/main.cpp Tue Jul 28 09:20:47 2020 +0000
@@ -1,60 +1,43 @@
/* Hello World! for the TextLCD Enhanced Library*/
+//Probado en el BluePill 27/07/20
#include "mbed.h"
#include "TextLCD.h"
// Host PC Communication channels
-Serial pc(PA_2, PA_3); // tx, rx
-
+//Serial pc(PA_2, PA_3); // tx, rx
+AnalogIn LM35(PA_7);
// LCD instantiation
-TextLCD lcd(PA_8, PA_9, PA_10, PA_11, PA_12, PA_15, TextLCD::LCD16x2); // 4-bit bus: RS, E, D4, D5, D6, D7
+TextLCD lcd(PB_4, PB_3, PB_12, PB_13, PB_14, PB_15, TextLCD::LCD20x4); // 4-bit bus: RS, E, D4, D5, D6, D7
Timer t;
int main()
{
- pc.printf("TextLCD Enhanced Test. Columns=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
-
- for (int row = 0; row < lcd.rows(); row++) {
- int col = 0;
-
- pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
-
- lcd.putc('0' + row);
-
- for (col=1; col < lcd.columns() - 1; col++) {
- lcd.putc('*');
- }
-
- pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
- lcd.putc('+');
- }
-
-// Fill screen again and time it
- t.start();
-
- for (int row=0; row<lcd.rows(); row++) {
- int col=0;
+ //pc.printf("TextLCD Enhanced Test. Columns=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
+ lcd.printf("Funka locoso");
+ float tempC,tempF,a[10],avg;
+ int i;
+ lcd.locate(0,1);
+ while(1) {
- lcd.putc('0' + row);
-
- for (col=1; col<lcd.columns()-1; col++) {
- lcd.putc('*');
+ avg=0;
+ //Toma 10 lecturas del LM35
+ for(i=0; i<10; i++) {
+ a[i]=LM35.read();
+ wait(.02);
}
-
- lcd.putc('+');
- }
- t.stop();
- pc.printf("All my hard work took %f sec\r\n", t.read());
+ //Calcula el promedio
+ for(i=0; i<10; i++) {
+ avg=avg+(a[i]/10);
+ }
+ //Ajusta conversion
-// Show cursor as blinking character
- lcd.setCursor(TextLCD::CurOff_BlkOn);
+ tempC=(avg*3.685503686*100);
+ tempF=(9.0*tempC)/5.0 + 32.0;
+ //Imprime en LCD
+ lcd.printf("Temp = %.0f C -> %.0f F\r\n", tempC,tempF);
-// Set and show user defined characters. A maximum of 8 UDCs are supported by the HD44780.
-// They are defined by a 5x7 bitpattern.
- lcd.setUDC(0, (char *) udc_0); // Show |>
- lcd.putc(0);
- lcd.setUDC(1, (char *) udc_1); // Show <|
- lcd.putc(1);
-
- pc.printf("Bye now\r\n");
+ wait(1);
+ lcd.locate(0,1);
+ }
}
--- a/mbed.bld Tue Feb 05 14:00:02 2019 +0000 +++ b/mbed.bld Tue Jul 28 09:20:47 2020 +0000 @@ -1,1 +1,1 @@ -https://os.mbed.com/users/mbed_official/code/mbed/builds/3a7713b1edbc \ No newline at end of file +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed1.bld Tue Jul 28 09:20:47 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/3a7713b1edbc \ No newline at end of file