added lpcload tool to upload firmware into lpc2220 ram vi uart0

diff --git a/betty/lpcload.c b/betty/lpcload.c
new file mode 100644 (file)
index 0000000..e2bef73
--- /dev/null
+++ b/betty/lpcload.c
@@ -0,0 +1,227 @@
+/*
+ * lpcload.c - load firmware into ram of lpc2220 via uart0
+ *
+ * author: hackbard@hackdaworld.org
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <termios.h>
+
+#define VERBOSE                (1<<0)
+#define FIRMWARE       (1<<1)
+
+#define CRYSTFREQ      "10000"
+
+#define BUFSIZE                64
+
+void usage(void) {
+
+       printf("possible argv:\n");
+       printf("  -d <serial device>\n");
+       printf("  -f <firmware>\n");
+       printf("  -c <crystal freq>\n");
+       printf("  -v\n");
+
+}
+
+int txrx(int fd,char *buf,int *len,unsigned char v) {
+
+       int ret,cnt;
+       int i;
+
+       /* write */
+
+       if(v&VERBOSE)
+               printf("  >> ");
+       cnt=0;
+       while(*len) {
+               ret=write(fd,buf+cnt,*len);
+               if(ret<0) {
+                       perror("txrx write");
+                       return ret;
+               }
+               if(v&VERBOSE)
+                       for(i=0;i<ret;i++)
+                               printf("%c",
+                                      ((buf[cnt+i]>0x19)&(buf[cnt+i]<0x7f))?
+                                      buf[cnt+i]:'.');
+               *len-=ret;
+               cnt+=ret;
+       }
+       if(v&VERBOSE)
+               printf(" (%d)\n",cnt);
+
+       /* cut the echo */
+       // add more checking here!
+       while(cnt)
+               cnt-=read(fd,buf,cnt);
+
+       /* read */
+
+       if(v&VERBOSE)
+               printf("  << ");
+       ret=1;
+       cnt=0;
+       while(ret>0) {
+               ret=read(fd,buf+cnt,BUFSIZE-cnt);
+               if(ret<0) {
+                       perror("txrx read");
+                       return ret;
+               }
+               if(ret+cnt>BUFSIZE) {
+                       printf("txrx read: too small buf size (%d)!\n",BUFSIZE);
+                       return -1;
+               }
+               if(v&VERBOSE)
+                       for(i=0;i<ret;i++)
+                               printf("%c",
+                                      ((buf[cnt+i]>0x19)&(buf[cnt+i]<0x7f))?
+                                      buf[cnt+i]:'.');
+               cnt+=ret;
+       }
+       if(v&VERBOSE)
+               printf(" (%d)\n",cnt);
+       *len=cnt;
+
+       return cnt;
+}
+
+int main(int argc,char **argv) {
+
+       int i;
+       char tts[128];
+       int tts_fd;
+       char fw[128];
+       int fw_fd;
+       unsigned char info;
+       struct termios term;
+       char cfreq[8];
+       int len;
+       char buf[BUFSIZE];
+
+       /*
+        * initial ... 
+        */
+
+       info=0;
+       memset(&term,0,sizeof(struct termios));
+       strncpy(cfreq,CRYSTFREQ,7);
+
+       /* parse argv */
+
+       for(i=1;i<argc;i++) {
+
+               if(argv[i][0]!='-') {
+                       usage();
+                       return -1;
+               }
+
+               switch(argv[i][1]) {
+                       case 'd':
+                               strncpy(tts,argv[++i],127);
+                               break;
+                       case 'f':
+                               strncpy(fw,argv[++i],127);
+                               info|=FIRMWARE;
+                               break;
+                       case 'v':
+                               info|=VERBOSE;
+                               break;
+                       case 'c':
+                               strncpy(cfreq,argv[++i],7);
+                               break;
+                       default:
+                               usage();
+                               return -1;
+               }
+
+       }
+
+       /*
+        * open serial device
+        */
+
+       tts_fd=open(tts,O_RDWR);
+       if(tts_fd<0) {
+               perror("tts open");
+               return tts_fd;
+       }
+
+       /*
+        * configure serial device
+        */
+
+       tcgetattr(tts_fd,&term);
+
+       // input/output baudrate
+
+       cfsetispeed(&term,B9600);
+       cfsetospeed(&term,B9600);
+
+       // control options -> 8n1
+
+       term.c_cflag&=~PARENB;  // no parity
+       term.c_cflag&=~CSTOPB;  // only 1 stop bit
+       term.c_cflag&=~CSIZE;   // no bit mask for data bits
+       term.c_cflag|=CS8;      // 8 data bits
+
+       // line options -> raw input
+       
+       term.c_lflag&=~(ICANON|ECHO|ECHOE|ISIG);
+
+       // input options -> disable flow control
+       
+       term.c_iflag&=~(IXON|IXOFF|IXANY);
+
+       // more control options -> timeout
+       
+       term.c_cc[VMIN]=0;
+       term.c_cc[VTIME]=10;    // 1 second timeout
+
+       tcsetattr(tts_fd,TCSANOW,&term);
+
+       /* auto baud sequence */
+
+       write(tts_fd,"?",1);
+       len=0;
+       txrx(tts_fd,buf,&len,info);
+       if(strncmp(buf,"Synchronized\r\n",14)) {
+               printf("auto baud detection failed\n");
+               return -1;
+       }
+
+       /* tell bl that we are synchronized (it's allready in buf) */
+       len=14;
+       txrx(tts_fd,buf,&len,info);
+       if(strncmp(buf,"OK\r\n",4)) {
+               printf("sync failed\n");
+               return -1;
+       }
+
+       /* tell bl the crystal frequency */
+       len=strlen(cfreq)+2;
+       strncpy(buf,cfreq,BUFSIZE);
+       buf[len-2]='\r';
+       buf[len-1]='\n';
+       txrx(tts_fd,buf,&len,info);
+       if(strncmp(buf,"OK\r\n",4)) {
+               printf("freq set failed\n");
+               return -1;
+       }
+
+
+       // to be continued ... (parsing fw file and poking it to ram)
+
+end:
+       close(tts_fd);
+
+       return 0;
+}
+

diff --git a/betty/readme b/betty/readme
index c95b57c..bd8d4a8 100644 (file)
--- a/betty/readme
+++ b/betty/readme
@@ -4,6 +4,8 @@ the betty tv project
 contents:
 ---------
 
 contents:
 ---------
 

+* lpcload.c - loads firmware to the lpc2220 via uart0
+

 * betty.c - replacement firmware for the betty tv remote
 
 
 * betty.c - replacement firmware for the betty tv remote