git.mutantstargoat.com Git - rpikern/blob - src/main.c

   1 #include "config.h"
   2
   3 #include <string.h>
   4 #include <stdint.h>
   5 #include <ctype.h>
   6 #include "asm.h"
   7 #include "serial.h"
   8
   9 void dbgled(int x);
  10 void exit(int x);
  11
  12 static void cmdrun(char *cmd);
  13
  14 int main(void)
  15 {
  16         int lastnl = 0;
  17         static char cmdbuf[256];
  18         static int cmdend;
  19
  20         init_serial(115200);
  21         ser_printstr("starting rpikern\n");
  22
  23         for(;;) {
  24                 int c = ser_getchar();
  25
  26                 switch(c) {
  27                 case '\r':
  28                 case '\n':
  29                         if(!lastnl) {
  30                                 ser_printstr("\r\n");
  31                                 cmdbuf[cmdend] = 0;
  32                                 cmdend = 0;
  33                                 cmdrun(cmdbuf);
  34                         }
  35                         lastnl = 1;
  36                         break;
  37
  38                 case -1:
  39                         lastnl = 0;
  40                         ser_printstr("error!\n");
  41                         break;
  42
  43                 default:
  44                         lastnl = 0;
  45                         ser_putchar(c);
  46                         if(cmdend < sizeof cmdbuf) {
  47                                 cmdbuf[cmdend++] = c;
  48                         }
  49                 }
  50         }
  51
  52         return 0;
  53 }
  54
  55 void panic(void)
  56 {
  57         ser_printstr("PANIC!\n");
  58         exit(0);
  59 }
  60
  61 static void cmdrun(char *cmd)
  62 {
  63         char *ptr, *args;
  64
  65         while(*cmd && isspace(*cmd)) cmd++;
  66         ptr = cmd;
  67         while(*ptr && !isspace(*ptr)) ptr++;
  68         *ptr = 0;
  69         args = ptr + 1;
  70
  71         if(strcmp(cmd, "help") == 0) {
  72                 ser_printstr("help not implemented yet\n");
  73         } else if(strcmp(cmd, "ver") == 0) {
  74                 ser_printstr("rpikern version 0.0\n");
  75         } else {
  76                 ser_printstr("Unknown command: ");
  77                 ser_printstr(cmd);
  78                 ser_printstr("\n");
  79         }
  80 }