firmware upload to ram possible

diff --git a/betty/lpcload.c b/betty/lpcload.c
index 905ebbd..6ec1186 100644 (file)
--- a/betty/lpcload.c
+++ b/betty/lpcload.c
@@ -1,8 +1,10 @@
 /*
  * lpcload.c - load firmware into ram of lpc2220 via uart0
  *
- * author: hackbard@hackdaworld.org
+ * author: hackbard@hackdaworld.org, rolf.anders@physik.uni-augsburg.de
  *
+ * build: make
+ * usage: sudo ./lpcload -d /dev/ttyS0 -f firmware.hex [-v]
  */
 
 #include <stdio.h>
@@ -56,8 +58,6 @@ typedef struct s_lpc {
        char fwfile[128];       /* firmware file */
        u8 info;                /* info/mode */
        char freq[8];           /* frequency */
-       int partid;             /* part id */
-       u8 bcv[2];              /* boot code version */
        u32 hoff;               /* start addr of ihex file */
        u32 roff;               /* ram offset of uc */
 } t_lpc;
@@ -110,8 +110,8 @@ int open_serial_device(t_lpc *lpc) {
        // input options -> enable flow control
        
        //term.c_iflag&=~(IXON|IXOFF|IXANY|INLCR|ICRNL);
-       term.c_iflag&=~(INLCR|ICRNL);
-       term.c_iflag|=(IXON|IXOFF|IXANY);
+       term.c_iflag&=~(INLCR|ICRNL|IXANY);
+       term.c_iflag|=(IXON|IXOFF);
 
        // more control options -> timeout / flow control
        
@@ -184,79 +184,68 @@ int txrx(t_lpc *lpc,char *buf,int len,u8 type) {
        /* cut the echo if not of type auto baud */
 
        if(type!=TXRX_TYPE_BAUD) {
-               while(cnt>0) {
+               while(cnt) {
                        ret=read(lpc->sfd,buf,cnt);
                        if(ret<0) {
                                perror("txrx echo cut");
                                return ret;
                        }
-                       if(type==TXRX_TYPE_CKSM) {
-                               printf("   cksm resp: ");
-                               for(i=0;i<ret;i++)
-                                       printf("%02x ",buf[i]);
-                               printf("\n");
-                       }
-                       for(i=0;i<ret;i++) {
-                               if(buf[i]==0x13)
-                                       printf("STOP !!!\n");
-                       }
                        cnt-=ret;
                }
        }
 
        /* return here if type is data */
 
-       if(type==TXRX_TYPE_DATA) {
-               ret=1;
-               while(ret) {
-                       ret=read(lpc->sfd,buf,BUFSIZE);
-                       for(i=0;i<ret;i++) {
-                               if(buf[i]!='\n') {
-                                       printf("FATAL!!!\n");
-                                       int j;
-                                       for(j=0;j<ret;j++) printf("%02x ",buf[j]);
-                                       printf("\n");
-                               }
-                       }
-               }
+       if(type==TXRX_TYPE_DATA)
                return cnt;
-       }
-
-       /* wait, if cksum has to be verified */
-       
-       //if(type==TXRX_TYPE_CKSM)
-       //      sleep(3);
 
        /* read */
 
-       if(lpc->info&VERBOSE)
-               printf("  << ");
+       ret=read(lpc->sfd,buf,1);
+       if(ret<0) {
+               perror("txrx read (first byte)");
+               return ret;
+       }
+               
+       switch(buf[0]) {
+               case 'S':
+                       cnt=13;
+                       break;
+               case 'O':
+                       cnt=3;
+                       break;
+               case 'R':
+                       cnt=7;
+                       break;
+               case '0':
+                       cnt=2;
+                       break;
+               default:
+                       printf("txrx read: bad return byte '%02x'\n",buf[0]);
+                       break;
+       }
+
        ret=1;
-       cnt=0;
-       while(ret) {
-               ret=read(lpc->sfd,buf+cnt,BUFSIZE-cnt);
+       i=cnt;
+       while(i) {
+               ret=read(lpc->sfd,buf+1+cnt-i,i);
                if(ret<0) {
-                       perror("txrx read");
+                       perror("txrx read (next bytes)");
                        return ret;
                }
-               if(ret+cnt>BUFSIZE) {
-                       printf("txrx read: too small buf size (%d)!\n",BUFSIZE);
-                       return -1;
-               }
-               if(lpc->info&VERBOSE)
-                       for(i=0;i<ret;i++)
-                               printf("%c",
-                                      ((buf[cnt+i]>0x19)&(buf[cnt+i]<0x7f))?
-                                      buf[cnt+i]:'.');
-               cnt+=ret;
+               i-=ret;
        }
        if(lpc->info&VERBOSE) {
+               printf("  << ");
+               for(i=0;i<cnt+1;i++)
+                       printf("%c",((buf[i]>0x19)&(buf[i]<0x7f))?
+                                   buf[i]:'.');
                printf(" | ");
-               for(i=0;i<cnt;i++)
+               for(i=0;i<cnt+1;i++)
                        printf("%02x ",buf[i]);
-               printf("| (%d)\n",cnt);
+               printf("| (%d)\n",cnt+1);
        }
-       buf[cnt]='\0';
+       buf[cnt+1]='\0';
 
        /* check/strip return code if type is cmd */
 
@@ -284,7 +273,7 @@ int bl_init(t_lpc *lpc) {
        /* auto baud sequence */
        buf[0]='?';
        txrx(lpc,buf,1,TXRX_TYPE_BAUD);
-       if(strncmp(buf,"Synchronized",12)) {
+       if(strncmp(buf,"Synchronized\r\n",14)) {
                printf("auto baud detection failed\n");
                return -1;
        }
@@ -310,32 +299,6 @@ int bl_init(t_lpc *lpc) {
        return 0;
 }
 
-int read_part_id(t_lpc *lpc) {
-
-       char buf[BUFSIZE];
-
-       memcpy(buf,"J\r\n",3);
-       txrx(lpc,buf,3,TXRX_TYPE_CMD);
-       lpc->partid=atoi(buf);
-
-       return lpc->partid;
-}
-
-int read_bcv(t_lpc *lpc) {
-
-       char buf[BUFSIZE];
-       char *ptr;
-
-       memcpy(buf,"K\r\n",3);
-       txrx(lpc,buf,3,TXRX_TYPE_CMD);
-       ptr=strtok(buf,"\r\n");
-       lpc->bcv[0]=strtol(ptr,NULL,16);
-       ptr=strtok(NULL,"\r\n");
-       lpc->bcv[1]=strtol(ptr,NULL,16);
-
-       return 0;
-}
-
 int unlock_go(t_lpc *lpc) {
 
        char buf[BUFSIZE];
@@ -359,22 +322,13 @@ int go(t_lpc *lpc) {
        return ret;
 }
 
-int uuencode(char *in,char *out) {
-
-       int i;
-
-       out[0]=0x20+((in[0]>>2)&0x3f);
-       out[1]=0x20+(((in[0]<<4)|(in[1]>>4))&0x3f);
-       out[2]=0x20+(((in[1]<<2)|(in[2]>>6))&0x3f);
-       out[3]=0x20+(in[2]&0x3f);
+int uuencode(u8 *in,u8 *out,int len) {
 
-       printf("  enc: ");
-       for(i=0;i<3;i++)
-               printf("%02x ",in[i]);
-       printf("-> ");
-       for(i=0;i<4;i++)
-               printf("%02x ",out[i]);
-       printf("\n");
+       out[0]=0x20+len;
+       out[1]=0x20+((in[0]>>2)&0x3f);
+       out[2]=0x20+(((in[0]<<4)|(in[1]>>4))&0x3f);
+       out[3]=0x20+(((in[1]<<2)|(in[2]>>6))&0x3f);
+       out[4]=0x20+(in[2]&0x3f);
 
        return 0;
 }
@@ -413,10 +367,6 @@ int write_to_ram(t_lpc *lpc,char *buf,u32 addr,int len) {
 
        /* send command and check return code */
        txrx(lpc,txrxbuf,slen,TXRX_TYPE_CMD);
-       //if(strncmp(txrxbuf,"OK\r\n",4)) {
-       //      printf("ram write: write command failed\n");
-       //      return -1;
-       //}
 
        /* send data */
        lcount=0;
@@ -426,13 +376,12 @@ int write_to_ram(t_lpc *lpc,char *buf,u32 addr,int len) {
        while(bcnt<nlen) {
 
                /* uuencode / prepare data bytes */
-               uuencode(buf+bcnt,txrxbuf);
-               txrxbuf[4]='\r';
-               txrxbuf[5]='\n';
+               uuencode((u8 *)(buf+bcnt),(u8 *)(txrxbuf),bcnt==nlen-3?len%3:3);
+               txrxbuf[5]='\r';
+               txrxbuf[6]='\n';
 
                /* checksum */
-               checksum+=(buf[bcnt]+buf[bcnt+1]+buf[bcnt+2]);
-               printf("----> %d %d\n",checksum,bcnt);
+               checksum+=((u8)buf[bcnt]+(u8)buf[bcnt+1]+(u8)buf[bcnt+2]);
 
                /* send a data line */
                txrx(lpc,txrxbuf,6,TXRX_TYPE_DATA);
@@ -444,11 +393,15 @@ int write_to_ram(t_lpc *lpc,char *buf,u32 addr,int len) {
 
                /* checksum */
                if((!(lcount%20))|(bcnt==nlen)) {
+                       /* send backtick */
+                       memcpy(txrxbuf,"`\r\n",3);
+                       //txrx(lpc,txrxbuf,3,TXRX_TYPE_DATA);
                        /* send checksum */
-                       snprintf(txrxbuf,BUFSIZE,"%d\r\n",checksum%0x100);
+                       snprintf(txrxbuf,BUFSIZE,"%d\r\n",checksum);
                        slen=strlen(txrxbuf);
                        txrx(lpc,txrxbuf,slen,TXRX_TYPE_CKSM);
-                       if(!strncmp(txrxbuf,"RESEND\r\n",8)) {
+                       if(!strncmp(txrxbuf,"RESE",4)) {
+                               read(lpc->sfd,txrxbuf+4,4);
                                printf("ram write: resending ...\n");
                                bcnt-=count;
                        }
@@ -470,9 +423,10 @@ int firmware_to_ram(t_lpc *lpc) {
 
        char buf[BUFSIZE];
        u32 addr,len,type;
-       int ret;
+       int ret,temp;
 
        /* read a line */
+       ret=1;
        while(ret) {
                /* sync line */
                ret=read(lpc->fwfd,buf,1);
@@ -504,14 +458,16 @@ int firmware_to_ram(t_lpc *lpc) {
                /* successfull return if type is end of file */
                if(type==0x01)
                        return 0;
-               /* read data */
-               ret=read(lpc->fwfd,buf,2*len);
-               if(ret!=(2*len)) {
+               /* read data (and cksum) */
+               ret=read(lpc->fwfd,buf,2*(len+1));
+               if(ret!=(2*(len+1))) {
                        printf("fw to ram: data missing\n");
                                return -1;
                }
-               /* checksum */
-               ret=read(lpc->fwfd,buf,2);
+               for(ret=0;ret<len;ret++) {
+                       sscanf(buf+2*ret,"%02x",&temp);
+                       buf[ret]=temp;
+               }
                /* act according to type */
                switch(type) {
                        case 0x03:
@@ -585,15 +541,8 @@ int main(int argc,char **argv) {
        if(bl_init(&lpc)<0)
                return -1;
 
-       /* read part id */
-       read_part_id(&lpc);
-       printf("part id: %d\n",lpc.partid);
-
-       /* read boot code version */
-       read_bcv(&lpc);
-       printf("boot code version: %02x %02x\n",lpc.bcv[0],lpc.bcv[1]);
-
        /* parse intel hex file and write to ram */
+       printf("write firmware to ram ...\n");
        firmware_to_ram(&lpc);
 
        /* unlock go cmd */