Simon Ford
A temporary workaround for stdio hangs when using both inside and outside an interrupt
Revision 0:51318bb188e2, committed 2010-02-20
- Comitter:
- simon
- Date:
- Sat Feb 20 07:55:48 2010 +0000
- Commit message:
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 000000000000 -r 51318bb188e2 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Feb 20 07:55:48 2010 +0000
@@ -0,0 +1,29 @@
+// using 2 serial instances to workaround hand bug while using printf both inside and outside interrupt
+
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+Serial pc2(USBTX, USBRX); // tx, rx
+
+// debugging LEDs
+DigitalOut interrupt(LED1);
+DigitalOut tx(LED4);
+
+void handle() {
+ char rx_byte = pc2.getc();
+ interrupt = !interrupt;
+}
+
+int main() {
+ pc2.attach(handle);
+
+ while (1) {
+ // send a long string of bytes
+ tx = 1;
+ for (int i=0;i<20;i++) {
+ printf("If I receive while transmitting this I will crash...\r\n");
+ }
+ tx = 0;
+ wait(1.0);
+ }
+}
diff -r 000000000000 -r 51318bb188e2 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat Feb 20 07:55:48 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/49a220cc26e0