Eduardo de Mier
Sample prog to test timer aspects
Dependencies: TextLCD mbed-src
Testing mbed Timer
Revision 0:a55017238349, committed 2015-03-30
- Comitter:
- eduardoG26
- Date:
- Mon Mar 30 14:35:55 2015 +0000
- Child:
- 1:fa206fcadfad
- Commit message:
- First
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Mon Mar 30 14:35:55 2015 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/eduardoG26/code/TextLCD/#3654c6ecddae
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Mar 30 14:35:55 2015 +0000
@@ -0,0 +1,44 @@
+/* Testing the overflow of Timer
+LCD on I2C bus, PCF8574
+ */
+#include "mbed.h"
+#include "TextLCD.h"
+
+Timer t;
+
+I2C i2c_lcd(I2C_SDA,I2C_SCL); // SDA, SCL
+
+TextLCD_I2C lcd(&i2c_lcd, 0x40, TextLCD::LCD16x2); // I2C bus, PCF8574 Slaveaddress, LCD Type
+
+int main()
+{
+ uint32_t Millis, LastMillis;
+
+ i2c_lcd.frequency(400000); // 400KHz
+ lcd.setCursor(lcd.CurOff_BlkOff); // Cursor off, Blink off
+ lcd.cls();
+ lcd.setBacklight(TextLCD::LightOn);
+ lcd.locate(0,0); // Goto beginning of line = second par.
+ lcd.printf("Testing Timer...\n");
+ lcd.locate(0,1); // Goto beginning of line = second par.
+ lcd.printf("...us overflow \n");
+
+ t.reset();
+ t.start();
+ Millis = t.read_ms() & 0x2000;
+ lcd.locate(0,1); // Goto beginning of line = second par.
+ lcd.printf("Start M: %08d",Millis);
+
+ do {
+ LastMillis = Millis;
+ Millis = t.read_ms() & 0x2000;
+ } while(LastMillis <= Millis);
+
+ lcd.locate(0,0); // Goto beginning of line = second par.
+ lcd.printf("Last M: %08d",LastMillis);
+ lcd.locate(0,1);
+ lcd.printf("Act. M: %08d",Millis);
+
+ printf("Last Millis: %06d",LastMillis);
+ printf("Act. Millis: %06d",Millis);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-src.lib Mon Mar 30 14:35:55 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-src/#d54623194236