X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Ffpga.git;a=blobdiff_plain;f=fx2%2Fee2ihex.c;fp=fx2%2Fee2ihex.c;h=d438b43092984da06cfee6f8cc89754b1c456d8e;hp=0000000000000000000000000000000000000000;hb=bdea9cbc1343bec0c7f993f3dcde9e23fe9e3569;hpb=0544bb04468bc99232d9cad31d2238d23488e524

diff --git a/fx2/ee2ihex.c b/fx2/ee2ihex.c
new file mode 100644
index 0000000..d438b43
--- /dev/null
+++ b/fx2/ee2ihex.c
@@ -0,0 +1,132 @@
+/*
+ * ee2ihex, convert eeprom content to intel hex
+ *
+ * author: hackbard@hackdaworld.org
+ *
+ * build: gcc -Wall -O3 -o ee2ihex ee2ihex.c
+ * usage: ./ee2ihex foo.iic > foo.ihx
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int hexdump(unsigned char *buf,int len) {
+
+	int i;
+
+	for(i=0;i<len;i++)
+		printf("%02x ",buf[i]);
+
+	return 0;
+}
+
+int asciidump(unsigned char *buf,int len) {
+
+	int i;
+
+	for(i=0;i<len;i++)
+		printf("%c ",(buf[i]<0x20)||(buf[i]>0x7e)?'.':buf[i]);
+
+	return 0;
+}
+
+int main(int argc,char **argv) {
+
+	int i;
+	int fd;
+	int ret;
+	int size=0;
+	unsigned short len;
+	unsigned short ihxaddr;
+	unsigned char addrl;
+	unsigned char addrh;
+	unsigned char ihxlen;
+	unsigned char crc;
+	unsigned char buf[1024];
+
+	fd=open(argv[1],O_RDONLY);
+	if(fd<0) {
+		perror("fd open");
+		return fd;
+	}
+
+	/* verify eeprom image */
+	ret=read(fd,buf,8);
+	if(ret!=8) {
+		printf("header too small\n");
+		return -1;
+	}
+
+	if(buf[0]!=0xc2) {
+		printf("wrong boot byte: %02x\n",buf[0]);
+		return -1;
+	}
+
+	printf("# ihex file, source eeprom file: %s\n",argv[1]);
+	printf("#\n");
+	printf("# header:\n");
+	printf("# ");
+	hexdump(buf,8);
+	printf(" | ");
+	asciidump(buf,8);
+	printf("\n");
+	printf("#\n");
+	printf("\n");
+
+	size=0;
+
+	while(ret) {
+		ret=read(fd,buf,4);
+		if(ret!=4) {
+			perror("read len/addr");
+			return ret;
+		}
+
+		len=(buf[0]<<8)|(buf[1]);
+		crc=0x00;
+		ihxaddr=(buf[2]<<8)|buf[3];
+
+		if(buf[0]&(1<<7))
+			goto END;
+
+		while(len) {
+
+			ihxlen=(len>=0x10)?0x10:len;
+			addrh=ihxaddr>>8;
+			addrl=ihxaddr&0xff;
+			printf(":%02x%02x%02x%02x",ihxlen,addrh,addrl,0);
+			crc=ihxlen+addrh+addrl;
+
+			ret=read(fd,buf,ihxlen);
+			if(ret!=ihxlen) {
+				perror("read data");
+				return ret;
+			}
+
+			for(i=0;i<ihxlen;i++) {
+				printf("%02x",buf[i]);
+				crc+=buf[i];
+			}
+
+			crc^=0xff;
+			crc+=1;
+			printf("%02x\n",crc);
+
+			ihxaddr+=ihxlen;
+			len-=ihxlen;
+		}
+
+	}
+
+END:
+	printf(":00000001ff\n");
+	close(fd);
+
+	return 0;
+}