#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
+#include <string.h>
#include <errno.h>
#include <libusb.h>
+#include "endian.h"
+
static libusb_device_handle *dev;
-int seq;
+static unsigned int seq;
typedef struct {
uint32_t magic;
} status_code;
#define LOG(...) printf(__VA_ARGS__)
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+static inline uint32_t fn_le32(uint32_t d)
+{
+ return (d<<24) | ((d<<8)&0xFF0000) | ((d>>8)&0xFF00) | (d>>24);
+}
+#else
#define fn_le32(x) (x)
-// TODO: support architectures that aren't little-endian
+#endif
-void dump_bl_cmd(bootloader_command cmd) {
+static void dump_bl_cmd(bootloader_command cmd) {
int i;
- for(i = 0; i < 24; i++)
+ for (i = 0; i < 24; i++)
LOG("%02X ", ((unsigned char*)(&cmd))[i]);
LOG("\n");
}
-int get_first_reply() {
+static int get_first_reply(void) {
unsigned char buffer[512];
int res;
int transferred;
res = libusb_bulk_transfer(dev, 0x81, buffer, 512, &transferred, 0);
- if(res != 0 ) {
+ if (res != 0 ) {
LOG("Error reading first reply: %d\ttransferred: %d (expected %d)\n", res, transferred, 0x60);
return res;
}
LOG("Reading first reply: ");
int i;
- for(i = 0; i < transferred; ++i) {
+ for (i = 0; i < transferred; ++i) {
LOG("%02X ", buffer[i]);
}
LOG("\n");
return res;
}
-
-int get_reply() {
- unsigned char dump[512];
- status_code buffer = ((status_code*)dump)[0];
+static int get_reply(void) {
+ union {
+ status_code buffer;
+ /* The following is needed because libusb_bulk_transfer might
+ * fail when working on a buffer smaller than 512 bytes.
+ */
+ unsigned char dump[512];
+ } reply;
int res;
int transferred;
- res = libusb_bulk_transfer(dev, 0x81, (unsigned char*)&buffer, 512, &transferred, 0);
- if(res != 0 || transferred != sizeof(status_code)) {
- LOG("Error reading reply: %d\ttransferred: %d (expected %d)\n", res, transferred, sizeof(status_code));
+
+ res = libusb_bulk_transfer(dev, 0x81, reply.dump, 512, &transferred, 0);
+ if (res != 0 || transferred != sizeof(status_code)) {
+ LOG("Error reading reply: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(status_code));
return res;
}
- if(fn_le32(buffer.magic) != 0x0a6fe000) {
- LOG("Error reading reply: invalid magic %08X\n",buffer.magic);
+ if (fn_le32(reply.buffer.magic) != 0x0a6fe000) {
+ LOG("Error reading reply: invalid magic %08X\n", reply.buffer.magic);
return -1;
}
- if(fn_le32(buffer.seq) != seq) {
- LOG("Error reading reply: non-matching sequence number %08X (expected %08X)\n", buffer.seq, seq);
+ if (fn_le32(reply.buffer.seq) != seq) {
+ LOG("Error reading reply: non-matching sequence number %08X (expected %08X)\n", reply.buffer.seq, seq);
return -1;
}
- if(fn_le32(buffer.status) != 0) {
- LOG("Notice reading reply: last uint32_t was nonzero: %d\n", buffer.status);
+ if (fn_le32(reply.buffer.status) != 0) {
+ LOG("Notice reading reply: last uint32_t was nonzero: %d\n", reply.buffer.status);
}
-
+
LOG("Reading reply: ");
int i;
- for(i = 0; i < transferred; ++i) {
- LOG("%02X ", ((unsigned char*)(&buffer))[i]);
+ for (i = 0; i < transferred; ++i) {
+ LOG("%02X ", reply.dump[i]);
}
LOG("\n");
-
+
return res;
}
int main(int argc, char** argv) {
- char* filename = "firmware.bin";
+ char default_filename[] = "firmware.bin";
+ char* filename = default_filename;
+ int res = 0;
+
if (argc == 2) {
filename = argv[1];
}
- FILE* fw = fopen(filename, "r");
- if(fw == NULL) {
- fprintf(stderr, "Failed to open %s: error %d", filename, errno);
+
+ FILE* fw = fopen(filename, "rb");
+ if (fw == NULL) {
+ fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno));
return errno;
}
libusb_init(NULL);
- libusb_set_debug(0,3);
- dev = libusb_open_device_with_vid_pid(NULL, 0x045e, 0x02ad);
+ libusb_set_debug(NULL, 3);
- if(dev == NULL) {
- printf("Couldn't open device.\n");
- return 1;
+ dev = libusb_open_device_with_vid_pid(NULL, 0x045e, 0x02ad);
+ if (dev == NULL) {
+ fprintf(stderr, "Couldn't open device.\n");
+ res = -ENODEV;
+ goto fail_libusb_open;
}
libusb_set_configuration(dev, 1);
LOG("About to send: ");
dump_bl_cmd(cmd);
- int res;
+
int transferred;
res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
- if(res != 0 || transferred != sizeof(cmd)) {
- LOG("Error: res: %d\ttransferred: %d (expected %d)\n",res, transferred, sizeof(cmd));
+ if (res != 0 || transferred != sizeof(cmd)) {
+ LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
goto cleanup;
}
res = get_first_reply(); // This first one doesn't have the usual magic bytes at the beginning, and is 96 bytes long - much longer than the usual 12-byte replies.
res = get_reply(); // I'm not sure why we do this twice here, but maybe it'll make sense later.
seq++;
- uint32_t addr = 0x00080000;
- char page[0x4000];
+ // Split addr declaration and assignment in order to compile as C++,
+ // otherwise this would give "jump to label '...' crosses initialization"
+ // errors.
+ uint32_t addr;
+ addr = 0x00080000;
+ unsigned char page[0x4000];
int read;
do {
read = fread(page, 1, 0x4000, fw);
- if(read <= 0) {
+ if (read <= 0) {
break;
}
//LOG("");
dump_bl_cmd(cmd);
// Send it off!
res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
- if(res != 0 || transferred != sizeof(cmd)) {
- LOG("Error: res: %d\ttransferred: %d (expected %d)\n",res, transferred, sizeof(cmd));
+ if (res != 0 || transferred != sizeof(cmd)) {
+ LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
goto cleanup;
}
int bytes_sent = 0;
- while(bytes_sent < read) {
+ while (bytes_sent < read) {
int to_send = (read - bytes_sent > 512 ? 512 : read - bytes_sent);
res = libusb_bulk_transfer(dev, 1, &page[bytes_sent], to_send, &transferred, 0);
- if(res != 0 || transferred != to_send) {
- LOG("Error: res: %d\ttransferred: %d (expected %d)\n",res, transferred, to_send);
+ if (res != 0 || transferred != to_send) {
+ LOG("Error: res: %d\ttransferred: %d (expected %d)\n", res, transferred, to_send);
goto cleanup;
}
bytes_sent += to_send;
cmd.write_addr = fn_le32(0x00080030);
dump_bl_cmd(cmd);
res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
- if(res != 0 || transferred != sizeof(cmd)) {
- LOG("Error: res: %d\ttransferred: %d (expected %d)\n", res, transferred, sizeof(cmd));
+ if (res != 0 || transferred != sizeof(cmd)) {
+ LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
goto cleanup;
}
res = get_reply();
seq++;
// Now the device reenumerates.
-
+
cleanup:
libusb_close(dev);
+fail_libusb_open:
libusb_exit(NULL);
- return 0;
+ fclose(fw);
+ return res;
}
-
projects / kinect-audio-setup.git / blobdiff