Peter Andersson
Sample program showing a software method to initiate reload and subsequent reset of the target without pressing the reset button.
main.cpp@0:0230dff6c24f, 2012-02-15 (annotated)
- Committer:
- peterand
- Date:
- Wed Feb 15 15:27:25 2012 +0000
- Revision:
- 0:0230dff6c24f
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| peterand | 0:0230dff6c24f | 1 | #include "mbed.h" |
| peterand | 0:0230dff6c24f | 2 | |
| peterand | 0:0230dff6c24f | 3 | /* connect a "wedge" between an arbitrary digital pin (p5 in this example) and nR (pin4)*/ |
| peterand | 0:0230dff6c24f | 4 | |
| peterand | 0:0230dff6c24f | 5 | Serial pc(USBTX, USBRX); |
| peterand | 0:0230dff6c24f | 6 | DigitalInOut reset(p5); |
| peterand | 0:0230dff6c24f | 7 | LocalFileSystem local("local"); |
| peterand | 0:0230dff6c24f | 8 | //FILE *fp; |
| peterand | 0:0230dff6c24f | 9 | |
| peterand | 0:0230dff6c24f | 10 | int main() { |
| peterand | 0:0230dff6c24f | 11 | |
| peterand | 0:0230dff6c24f | 12 | pc.baud(115200); |
| peterand | 0:0230dff6c24f | 13 | char filename[64]; |
| peterand | 0:0230dff6c24f | 14 | int n = 0; |
| peterand | 0:0230dff6c24f | 15 | |
| peterand | 0:0230dff6c24f | 16 | while(1) { |
| peterand | 0:0230dff6c24f | 17 | sprintf(filename, "/local/reset%03d.txt", n); |
| peterand | 0:0230dff6c24f | 18 | FILE *fp = fopen(filename, "r"); |
| peterand | 0:0230dff6c24f | 19 | if(fp == NULL) { |
| peterand | 0:0230dff6c24f | 20 | break; |
| peterand | 0:0230dff6c24f | 21 | } |
| peterand | 0:0230dff6c24f | 22 | fclose(fp); |
| peterand | 0:0230dff6c24f | 23 | n++; |
| peterand | 0:0230dff6c24f | 24 | } |
| peterand | 0:0230dff6c24f | 25 | |
| peterand | 0:0230dff6c24f | 26 | FILE *fp = fopen(filename, "w"); |
| peterand | 0:0230dff6c24f | 27 | fprintf(fp, "Reset # %d\n", n); |
| peterand | 0:0230dff6c24f | 28 | fclose(fp); |
| peterand | 0:0230dff6c24f | 29 | |
| peterand | 0:0230dff6c24f | 30 | pc.printf("\nThis was reset # %u\n", n); |
| peterand | 0:0230dff6c24f | 31 | pc.printf("Press 'R' to reset (and reload) the target\n"); |
| peterand | 0:0230dff6c24f | 32 | |
| peterand | 0:0230dff6c24f | 33 | while(1) { |
| peterand | 0:0230dff6c24f | 34 | if (pc.readable()){ |
| peterand | 0:0230dff6c24f | 35 | char c = pc.getc(); |
| peterand | 0:0230dff6c24f | 36 | if(c== 'R'){ |
| peterand | 0:0230dff6c24f | 37 | pc.printf("\nReset! Bye, bye...\n"); |
| peterand | 0:0230dff6c24f | 38 | reset.output(); |
| peterand | 0:0230dff6c24f | 39 | /* reset.write(0); not necessary*/ |
| peterand | 0:0230dff6c24f | 40 | } |
| peterand | 0:0230dff6c24f | 41 | else pc.printf("Got %c\n",c); |
| peterand | 0:0230dff6c24f | 42 | } |
| peterand | 0:0230dff6c24f | 43 | } |
| peterand | 0:0230dff6c24f | 44 | } |