本帖最后由 0522 于 2012-3-21 23:04 编辑
修改的代码早有了。到今天不会编译。
需要 交叉开发工具 cross-compiler-armv5l.tar.bz2- #include <fcntl.h>
- #include <malloc.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/ioctl.h>
- #include <stdio.h>
- #include <string.h>
- typedef struct {
- unsigned int e2prom_cmd_sub_addr;
- unsigned int sub_addr_count;
- unsigned char* e2prom_cmd_data;
- unsigned int data_count;
- } e2prom_s_cmd;
- #define E2PROM_CMD_READ 1
- #define E2PROM_CMD_WRITE 2
- #define E2PROM_DEVICE "/dev/misc/e2prom_24lc16"
- static int readparam(unsigned char *mac, unsigned char *stbid)
- {
- int fd, ret;
- e2prom_s_cmd arg;
- unsigned char buf[0x18];
- fd = open(E2PROM_DEVICE, O_RDWR);
- if (fd < 0) {
- printf("Device %s open error.\n", E2PROM_DEVICE);
- return -1;
- }
- arg.sub_addr_count = 2;
- arg.data_count = 0x18;
- arg.e2prom_cmd_sub_addr = 0x290;
- arg.e2prom_cmd_data = buf;
- ret = ioctl(fd, E2PROM_CMD_READ, &arg);
- if (ret != 0) {
- printf("Device %s read error.\n", E2PROM_DEVICE);
- return -1;
- }
- memcpy(mac, buf, 6);
- memcpy(stbid, &buf[6], 18);
- stbid[18] = '\0';
- return 0;
- }
- static int writeparam(unsigned char *mac, unsigned char *stbid)
- {
- int fd, ret;
- e2prom_s_cmd arg;
- unsigned char buf[0x18];
- memcpy(buf, mac, 6);
- memcpy(&buf[6], stbid, 18);
- fd = open(E2PROM_DEVICE, O_RDWR);
- if (fd < 0) {
- printf("Device %s open error.\n", E2PROM_DEVICE);
- return -1;
- }
- arg.sub_addr_count = 2;
- arg.data_count = 0x18;
- arg.e2prom_cmd_sub_addr = 0x290;
- arg.e2prom_cmd_data = buf;
- ret = ioctl(fd, E2PROM_CMD_WRITE, &arg);
- if (ret != 0) {
- printf("Device %s write error.\n", E2PROM_DEVICE);
- return -1;
- }
- return 0;
- }
- int main()
- {
- char c;
- int i, macs[6];
- unsigned char mac[6];
- unsigned char stbid[256];
- if (readparam(mac, stbid) < 0)
- return 1;
- printf("Current parameters: \n");
- printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
- printf(" STBID: %s\n", stbid);
-
- printf("\nPlease input new MAC (1a:2b:3c:4d:5e:6f): ");
- if (scanf("%02x:%02x:%02x:%02x:%02x:%02x", &macs[0], &macs[1], &macs[2], &macs[3], &macs[4], &macs[5]) != 6) {
- printf("Input MAC error\n");
- return 1;
- }
- for (i=0; i<6; i++)mac[i] = macs[i];
- printf("\nPlease input new STBID: ");
- scanf("%s", stbid);
- if (strlen(stbid) != 18) {
- printf("Invalid stbid\n");
- return 1;
- }
- printf("\nNew parameters: \n");
- printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
- printf(" STBID: %s\n", stbid);
- printf("\nDo you want to change paramemters? (y/N) ");
- for (;;) {
- c = getchar();
- if (c == 'y' || c == 'Y')
- break;
- if (c == 'n' || c == 'N') {
- printf("\nAborted.\n");
- return 1;
- }
- }
- if (writeparam(mac, stbid) == 0)
- printf("Parameters changed.\n");
- return 0;
- }
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