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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 |
--- /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); + } +}
--- /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