--- /dev/null
+/*
+ * Tool for Saturn USB DataLink device
+ * Copyright (c) 2014 notaz
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+// ugh.. avoid conflicting winsize/termio from sys/ioctl.h
+#define winsize winsize_
+#define termio termio_
+#include <linux/termios.h>
+
+#define BAUD_RATE 375000
+#define MAX_DATA_SIZE 191
+
+static int setup(int fd)
+{
+ struct termios2 tty;
+ //struct termios tty;
+ int ret;
+
+ memset(&tty, 0, sizeof(tty));
+
+ //ret = tcgetattr(fd, &tty);
+ ret = ioctl(fd, TCGETS2, &tty);
+ if (ret != 0) {
+ perror("TCGETS2");
+ return ret;
+ }
+
+ tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
+ | INLCR | IGNCR | ICRNL | IXON);
+ tty.c_oflag &= ~OPOST;
+ tty.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+ tty.c_cflag &= ~(CSIZE | PARENB);
+ tty.c_cflag |= CS8 | CSTOPB | CREAD;
+ tty.c_cflag &= ~CBAUD;
+ tty.c_cflag |= BOTHER;
+ tty.c_ispeed =
+ tty.c_ospeed = BAUD_RATE;
+
+ tty.c_cc[VMIN] = 1;
+ tty.c_cc[VTIME] = 0; // read timeout deciseconds
+
+ //ret = tcsetattr(fd, TCSANOW, &tty);
+ ret = ioctl(fd, TCSETS2, &tty);
+ if (ret != 0) {
+ perror("TCSETS2");
+ return ret;
+ }
+
+ memset(&tty, 0, sizeof(tty));
+ ret = ioctl(fd, TCGETS2, &tty);
+ if (ret != 0) {
+ perror("TCGETS2");
+ return ret;
+ }
+
+ if (tty.c_ispeed != BAUD_RATE || tty.c_ospeed != BAUD_RATE) {
+ fprintf(stderr, "warning: could not set %d baud, got:\n",
+ BAUD_RATE);
+ fprintf(stderr, "c_ispeed: %d\n", tty.c_ispeed);
+ fprintf(stderr, "c_ospeed: %d\n", tty.c_ospeed);
+ fprintf(stderr, "c_cflag: 0%o\n", tty.c_cflag);
+ }
+
+ return 0;
+}
+
+static void dump_pkt(const uint8_t *buf, size_t size, const char *msg)
+{
+ size_t i;
+
+ printf("%s\n", msg);
+
+ for (i = 0; i < size; ) {
+ printf("%02zx:", i);
+ while (i < size) {
+ printf(" %02x", buf[i]);
+ i++;
+ if ((i & 15) == 0)
+ break;
+ }
+ printf("\n");
+ }
+}
+
+static uint8_t sum(const uint8_t *buf, size_t size)
+{
+ uint8_t ret = 0;
+ size_t i;
+
+ for (i = 0; i < size; i++)
+ ret += buf[i];
+
+ return ret;
+}
+
+static int send_pkt(int fd, uint8_t cmd, uint32_t addr, uint8_t len,
+ const void *data, size_t data_size)
+{
+ uint8_t pkt[200];
+ int ret;
+
+ pkt[0] = 0x5a;
+ pkt[1] = 9 - 2 + data_size;
+ pkt[2] = cmd;
+ pkt[3] = addr >> 24;
+ pkt[4] = addr >> 16;
+ pkt[5] = addr >> 8;
+ pkt[6] = addr;
+ pkt[7] = len;
+ if (data_size > 0)
+ memcpy(&pkt[8], data, data_size);
+ pkt[8 + data_size] = sum(&pkt[1], 8 + data_size - 1);
+
+ // dump_pkt(pkt, 9 + data_size, "send:");
+
+ ret = write(fd, pkt, 9 + data_size);
+ if (ret != 9 + data_size) {
+ fprintf(stderr, "write: %d/%zd, cmd %02x, addr %08x: ",
+ ret, 9 + data_size, cmd, addr);
+ perror("");
+ dump_pkt(pkt, 9 + data_size, "");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int recv_pkt(int fd, uint8_t cmd, uint32_t addr,
+ void *data, size_t data_size)
+{
+ size_t size = 9 + data_size;
+ size_t got;
+ uint8_t pkt[200];
+ uint8_t csum;
+ int ret;
+
+ for (got = 0; got < size; ) {
+ ret = read(fd, pkt + got, size);
+ if (ret <= 0) {
+ fprintf(stderr, "read: %d, %zd/%zd, "
+ "cmd %02x, addr %08x: ",
+ ret, got, size, cmd, addr);
+ perror("");
+ if (got > 0)
+ dump_pkt(pkt, got, "received data:");
+ return -1;
+ }
+ got += ret;
+ }
+
+ csum = sum(&pkt[1], size - 2);
+ if (csum != pkt[size - 1]) {
+ fprintf(stderr, "read: %zd, cmd %02x, addr %08x: "
+ "checksum incorrect, expected %02x\n",
+ got, cmd, addr, csum);
+ dump_pkt(pkt, got, "");
+ return -2;
+ }
+
+ if (pkt[0] != 0xa5 || pkt[1] != size - 2 || pkt[2] != 0xff) {
+ fprintf(stderr, "read: %zd, cmd %02x, addr %08x: "
+ "unexpected response header\n",
+ got, cmd, addr);
+ dump_pkt(pkt, got, "");
+ return -2;
+ }
+
+ if (data_size != 0)
+ memcpy(data, &pkt[8], data_size);
+
+ // dump_pkt(pkt, got, "recv:");
+
+ return 0;
+}
+
+static int do_rx(int fd, uint32_t addr, void *buf, size_t size)
+{
+ char *cbuf = buf;
+ int ret;
+ int len;
+
+ /* must use at least 2 packets */
+ if (size <= MAX_DATA_SIZE)
+ len = size / 2;
+ else
+ len = MAX_DATA_SIZE;
+
+ ret = send_pkt(fd, 0x01, addr, len, NULL, 0);
+ if (ret != 0)
+ return ret;
+
+ ret = recv_pkt(fd, 0x01, addr, cbuf, len);
+ if (ret != 0)
+ return ret;
+
+ addr += len;
+ cbuf += len;
+ size -= len;
+
+ while (size > 0) {
+ uint8_t cmd = size > MAX_DATA_SIZE ? 0x11 : 0x21;
+
+ len = size;
+ if (len > MAX_DATA_SIZE)
+ len = MAX_DATA_SIZE;
+
+ ret = send_pkt(fd, cmd, addr, len, NULL, 0);
+ if (ret != 0)
+ return ret;
+
+ ret = recv_pkt(fd, 0x01, addr, cbuf, len);
+ if (ret != 0)
+ return ret;
+
+ addr += len;
+ cbuf += len;
+ size -= len;
+ }
+
+ return 0;
+}
+
+static int do_tx(int fd, uint32_t addr, void *buf, size_t size, int exe)
+{
+ size_t size_last = size;
+ uint32_t addr_last = addr;
+ char *cbuf = buf;
+ uint8_t cmd = 0x09;
+ int ret;
+ int len;
+
+ if (size > MAX_DATA_SIZE) {
+ /* skip first packet, we'll send it last */
+ size_last = MAX_DATA_SIZE;
+ addr += size_last;
+ cbuf += size_last;
+ size -= size_last;
+
+ while (size > 0) {
+ len = size;
+ if (len > MAX_DATA_SIZE)
+ len = MAX_DATA_SIZE;
+
+ ret = send_pkt(fd, cmd, addr, len, cbuf, len);
+ if (ret != 0)
+ return ret;
+
+ ret = recv_pkt(fd, cmd, addr, NULL, 0);
+ if (ret != 0)
+ return ret;
+
+ addr += len;
+ cbuf += len;
+ size -= len;
+ }
+ }
+
+ if (exe)
+ cmd = 0x19;
+
+ ret = send_pkt(fd, cmd, addr_last, size_last, buf, size_last);
+ if (ret != 0)
+ return ret;
+
+ ret = recv_pkt(fd, cmd, addr_last, NULL, 0);
+ if (ret != 0)
+ return ret;
+
+ return 0;
+}
+
+static void usage(const char *argv0)
+{
+ printf("usage:\n"
+ "%s [dev <device>] command(s)\n"
+ "commands:\n"
+ " rx <addr> <size> <outfile>\n"
+ " tx <addr> <size> <infile> [x]\n"
+ " <outfile> can be \"/hd/\" for a hexdump\n"
+ " x instructs to execute uploaded data\n"
+ " for tx, size 0 asks to use filesize\n", argv0);
+ exit(1);
+}
+
+static void invarg(int argc, char *argv[], int arg)
+{
+ if (arg < argc)
+ fprintf(stderr, "invalid arg %d: \"%s\"\n", arg, argv[arg]);
+ else
+ fprintf(stderr, "missing required argument %d\n", arg);
+ exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+ const char *portname = "/dev/ttyUSB0";
+ const char *fname;
+ struct stat st;
+ void *buf = NULL;
+ FILE *f = NULL;
+ uint32_t addr;
+ size_t size;
+ char *endp;
+ int arg = 1;
+ int ret;
+ int fd;
+
+ if (argc < 2 || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
+ usage(argv[0]);
+
+ if (!strcmp(argv[arg], "dev")) {
+ arg++;
+ if (argv[arg] != NULL)
+ portname = argv[arg];
+ else
+ invarg(argc, argv, arg);
+ arg++;
+ }
+
+ fd = open(portname, O_RDWR | O_NOCTTY | O_SYNC);
+ if (fd < 0) {
+ fprintf(stderr, "open %s: ", portname);
+ perror("");
+ return 1;
+ }
+
+ ret = setup(fd);
+ if (ret)
+ return ret;
+
+ while (arg < argc)
+ {
+ if (!strcmp(argv[arg], "rx") ||
+ !strcmp(argv[arg], "tx"))
+ {
+ int tx = !strcmp(argv[arg], "tx");
+ int exe = 0;
+
+ if (argc - arg < 4)
+ invarg(argc, argv, argc);
+
+ endp = NULL;
+ addr = strtoul(argv[++arg], &endp, 0);
+ if (endp == NULL || *endp != 0)
+ invarg(argc, argv, arg);
+
+ endp = NULL;
+ size = strtoul(argv[++arg], &endp, 0);
+ if (endp == NULL || *endp != 0)
+ invarg(argc, argv, arg);
+
+ fname = argv[++arg];
+ if (tx || strcmp(fname, "/hd/") != 0) {
+ f = fopen(fname, tx ? "rb" : "wb");
+ if (f == NULL) {
+ fprintf(stderr, "open %s: \n",
+ fname);
+ perror("");
+ return 1;
+ }
+ }
+
+ if (tx && size == 0) {
+ ret = fstat(fileno(f), &st);
+ if (ret != 0) {
+ fprintf(stderr, "fstat %s: \n",
+ fname);
+ perror("stat");
+ return 1;
+ }
+ size = st.st_size;
+ }
+
+ if (size == 0) {
+ fprintf(stderr, "size is 0\n");
+ return 1;
+ }
+
+ buf = realloc(buf, size);
+ if (buf == NULL) {
+ fprintf(stderr, "OOM\n");
+ return 1;
+ }
+
+ if (tx) {
+ ret = fread(buf, 1, size, f);
+ if (ret != size) {
+ fprintf(stderr, "read %s: \n",
+ fname);
+ perror("");
+ return 1;
+ }
+
+ if (arg + 1 < argc
+ && !strcmp(argv[arg + 1], "x"))
+ {
+ exe = 1;
+ arg++;
+ }
+
+ ret = do_tx(fd, addr, buf, size, exe);
+ if (ret != 0)
+ return ret;
+ }
+ else {
+ ret = do_rx(fd, addr, buf, size);
+ if (ret != 0)
+ return ret;
+
+ if (f != NULL) {
+ ret = fwrite(buf, 1, size, f);
+ if (ret != size) {
+ fprintf(stderr,
+ "write %s: \n",
+ fname);
+ perror("");
+ return 1;
+ }
+ }
+ else {
+ dump_pkt(buf, size, "");
+ }
+ }
+
+ if (f != NULL) {
+ fclose(f);
+ f = NULL;
+ }
+ arg++;
+ }
+ else {
+ invarg(argc, argv, arg);
+ }
+ }
+
+ return 0;
+}
notaz.gp2x.de / saturn.git / commitdiff