+ /* make it a multiple of 3 (reason: uuencode) */
+ nlen=(len/3+1)*3;
+ if(nlen>BUFSIZE) {
+ printf("ram write: too much data\n");
+ return -1;
+ }
+ for(i=len;i<nlen;i++) buf[i]=0;
+
+ /* prepare write command */
+ snprintf(txrxbuf,BUFSIZE,"W %d %d",addr,len);
+ slen=strlen(txrxbuf);
+ txrxbuf[slen]='\r';
+ txrxbuf[slen+1]='\0';
+ slen+=2;
+
+ /* 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;
+ bcnt=0;
+ count=0;
+ checksum=0;
+ while(bcnt<nlen) {
+
+ /* uuencode / prepare data bytes */
+ uuencode(buf+bcnt,txrxbuf);
+ txrxbuf[4]='\0';
+ txrxbuf[5]='\0';
+
+ /* checksum */
+ checksum+=(buf[0]+buf[1]+buf[2]);
+
+ /* send a data line */
+ txrx(lpc,txrxbuf,6,TXRX_TYPE_DATA);
+
+ /* increase counters */
+ lcount+=1;
+ bcnt+=3;
+ count+=3;
+
+ /* checksum */