haopeng tang
/
Nucleo_STM32_401RE
hello world
Revision 1:b97739800353, committed 2016-11-10
- Comitter:
- zef
- Date:
- Thu Nov 10 09:02:08 2016 +0000
- Parent:
- 0:b43404785506
- Commit message:
- add usb serial
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Thu Nov 10 08:18:55 2016 +0000 +++ b/main.cpp Thu Nov 10 09:02:08 2016 +0000 @@ -4,17 +4,21 @@ DigitalOut myled(LED1); DigitalIn myBt(USER_BUTTON); +Serial pc(USBTX,USBRX); int main() { //mypwm.period_ms(10); //mypwm.pulsewidth_ms(1); //printf("pwm set to %.2f %%\n", mypwm.read() * 100); - printf("hello world!"); + pc.baud(115200); + printf("hello world!");//why is cant't printf???? + pc.printf("PChello world!\n"); while(1) { if(myBt.read()==0) { myled = !myled; + printf("hello world,system had passed%dms\n",(int)us_ticker_read()); } //myled = !myled; wait(0.1);