Stefan Waldschmidt
Test the response time from toggling a GPIO input to setting a GPIO output from the interrupt handler.
Measure the interrupt response time for a GPIO input
This mbed program registers "on rise" and "on fall" interrupt handlers for a GPIO input and drives a different GPIO output to follow the input.
Measurements are performed on a NUCLEO-F767ZI board https://os.mbed.com/platforms/ST-Nucleo-F767ZI/.
mbed-os-5.12.3
- rising: 1.1 usec - 1.3 usec
- falling: 1.1 usec - 1.3 usec
OS 2
- rising: 0.7 usec - 1.2 usec
- falling: 0.8 usec - 1.3 usec
Revision 3:e4a312a8ad61, committed 2019-05-10
- Comitter:
- stefanwaldschmidt
- Date:
- Fri May 10 07:44:18 2019 +0000
- Parent:
- 2:57e26cc56a38
- Commit message:
- upgrade form mbed 2 to mbed-os-5.12.3;
Changed in this revision
diff -r 57e26cc56a38 -r e4a312a8ad61 main.cpp
--- a/main.cpp Thu May 09 13:43:35 2019 +0000
+++ b/main.cpp Fri May 10 07:44:18 2019 +0000
@@ -2,9 +2,11 @@
Test interrupt response time
Hardware: NUCLEO-F767ZI
+ Libraries:
+ mbed-os-5.12.3
Measured delay between gpio_in and gpio_out
- * rising: 0.7 usec - 1.2 usec
- * falling: 0.8 usec - 1.3 usec
+ * rising: 1.1 usec - 1.3 usec
+ * falling: 1.1 usec - 1.3 usec
*/
#include "mbed.h"
diff -r 57e26cc56a38 -r e4a312a8ad61 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Fri May 10 07:44:18 2019 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os.git/#2f1338b89fc2d8d932b1165a4e19d76989219c66
diff -r 57e26cc56a38 -r e4a312a8ad61 mbed.bld --- a/mbed.bld Thu May 09 13:43:35 2019 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file