Oliver Broad
/
I2C_Counting_Test
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I2C_HelloWorld_Mbed
by 
mbed official
Revision 1:494c4f7f60db, committed 2016-09-16
- Comitter:
- oliverb
- Date:
- Fri Sep 16 09:08:25 2016 +0000
- Parent:
- 0:f76c26307f9a
- Commit message:
- Tested with a PIC18F4520 acting as peripheral (slave), test displays 4 bits on LEDs, writes to PIC, waits 0.5s, reads value and displays then waits 0.5s.; Success=non flashing, fail=leds flash sent value-red value
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r f76c26307f9a -r 494c4f7f60db main.cpp
--- a/main.cpp Thu Feb 14 17:24:48 2013 +0000
+++ b/main.cpp Fri Sep 16 09:08:25 2016 +0000
@@ -1,25 +1,30 @@
#include "mbed.h"
-// Read temperature from LM75BD
I2C i2c(p28, p27);
+BusOut myleds(LED1, LED2, LED3, LED4);
-const int addr = 0x90;
+
+const int addr = 0xAA;
int main() {
- char cmd[2];
- while (1) {
- cmd[0] = 0x01;
- cmd[1] = 0x00;
+ i2c.frequency(100000);
+ while (1) {
+ for(int aa=0;aa<16;aa++)
+ {
+ myleds=aa;
+ char cmd[2];
+ cmd[0] = 0x00;
+ cmd[1] = aa;
i2c.write(addr, cmd, 2);
wait(0.5);
cmd[0] = 0x00;
- i2c.write(addr, cmd, 1);
- i2c.read(addr, cmd, 2);
-
- float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
- printf("Temp = %.2f\n", tmp);
+ i2c.write(addr, cmd, 1,true);
+ i2c.read(addr, cmd, 1);
+ myleds=cmd[0];
+ wait(0.5);
}
+ }
}
\ No newline at end of file
diff -r f76c26307f9a -r 494c4f7f60db mbed.bld --- a/mbed.bld Thu Feb 14 17:24:48 2013 +0000 +++ b/mbed.bld Fri Sep 16 09:08:25 2016 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/0954ebd79f59 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/2e9cc70d1897 \ No newline at end of file