#include "scope.h"
#include "usbtmc.h"
-#define USB_TIMEOUT 50000
+#define USB_TIMEOUT 10000
+#define USBTMC_IN_TRANSFERSIZE 0x800
#if BYTE_ORDER == LITTLE_ENDIAN
#define LE32(x) x
#endif
/* TODO: fix memory leak here: */
-#define USB_ERROR(s, x) do { if (x < 0) { fprintf(stderr, "usb %s: %s\n", s, usb_strerror()); usb_reset(sc->usb.dev); return 0; } } while(0)
+#define USB_ERROR(s, x) do { if (x < 0) { fprintf(stderr, "usb %s: %s\n", s, usb_strerror()); usbtmc_clear(sc); return 0; } } while(0)
/* This routine locates a scope by VID/PID and returns a struct scope* for it */
static struct scope* usbtmc_find_scope() {
return NULL;
}
-static unsigned char usbtmc_status(struct scope *sc)
+static unsigned char usb488_status(struct scope *sc)
{
int r;
unsigned char status[3];
(sc->usb.bTag & 0x7f), 0, (char*)status, 3,
USB_TIMEOUT);
- if ((r != 3) || (status[0] != 0x01) || (status[1] != (sc->usb.bTag & 0x7f))) {
+ if ((r != 3) || (status[0] != USBTMC_STATUS_SUCCESS) || (status[1] != (sc->usb.bTag & 0x7f))) {
printf("READ_STATUS_BYTE failed: %d 0x%x 0x%x 0x%x\n", r, status[0], status[1], status[2]);
return 0xff;
}
return NULL;
}
- printf("USBTMC Version %x.%x Capabilities:\n", res.bcdUSBTMC[0], res.bcdUSBTMC[1]);
+ printf("USBTMC Version %02x.%02x Capabilities:\n", res.bcdUSBTMC[0], res.bcdUSBTMC[1]);
if (res.USBTMCIFcapabilities & USBTMC_CAP_IF_INDICATOR_PULSE)
printf("\tInterface supports indicator pulse\n");
if (res.USBTMCDEVcapabilities & USBTMC_CAP_DEV_TERMCHAR_SUPP)
printf("\tDevice supports Termchar\n");
- printf("USB488 Version %x.%x Capabilities:\n", res.bcdUSB488[0], res.bcdUSB488[1]);
+ printf("USB488 Version %02x.%02x Capabilities:\n", res.bcdUSB488[0], res.bcdUSB488[1]);
if (res.USB488IFcapabilities & USB488_CAP_IF_4882)
printf("\tInterface is 488.2 compliant\n");
return &res;
}
+void usbtmc_reset(struct scope *sc)
+{
+ usb_reset(sc->usb.dev);
+ usbtmc_claim(sc);
+}
+
+static void usbtmc_clear(struct scope *sc)
+{
+ int r;
+ unsigned char status[2];
+
+ printf("Initiating clear...\n");
+ r = usb_control_msg(sc->usb.dev, 0xA1,
+ USBTMC_CTL_INITIATE_CLEAR,
+ 0, 0, (char*)status, 1,
+ USB_TIMEOUT);
+
+ if ((r != 1) || status[0] != USBTMC_STATUS_SUCCESS) {
+ printf("INITIATE_CLEAR failed (0x%x): %s\n", status[0], usb_strerror());
+ usbtmc_reset(sc);
+ return;
+ }
+
+ while(1) {
+ usleep(100000);
+ printf("Waiting for clear to complete...\n");
+
+ r = usb_control_msg(sc->usb.dev, 0xA1,
+ USBTMC_CTL_CHECK_CLEAR_STAT,
+ 0, 0, (char*)status, 2,
+ USB_TIMEOUT);
+
+ if (r != 2) {
+ printf("CHECK_CLEAR failed: %s\n", usb_strerror());
+ return;
+ }
+
+ if (USBTMC_STATUS_FAIL(status[0])) {
+ printf("CHECK_CLEAR failed: 0x%x\n", status[0]);
+ return;
+ }
+
+ if ((status[0] == USBTMC_STATUS_SUCCESS) && (status[1] == 0)) {
+ printf("Success!\n");
+ break;
+ }
+ }
+}
+
/*
* Send a scpi-command to the scope. The response goes into the buffer
* called resp, with a size of resplen. If resp==NULL, no response
free(req);
if (resp != NULL && resplen != 0) {
- unsigned char *buff;
+ unsigned char *buff = NULL;
+ unsigned char rxbuff[USBTMC_IN_TRANSFERSIZE];
struct usbtmc_header *res;
int bytes_read;
-
- sc->usb.bTag++;
+ unsigned int read_size = USBTMC_IN_TRANSFERSIZE;
+ unsigned int headerlen;
req = calloc(1, sizeof(struct usbtmc_header));
if (req == NULL) {
exit(EXIT_FAILURE);
}
- req->MsgID = USBTMC_REQUEST_DEV_DEP_MSG_IN;
- req->bTag = sc->usb.bTag;
- req->bTagInverse = ~sc->usb.bTag;
- req->TransferSize = LE32(sc->usb.wMaxPacketSize_in);
- req->bmTransferAttributes = USBTMC_TRANSFERATTRIB_EOM;
- req->TermChar = 0;
+ if (sc->usb.brokenRigol == 1) {
+ read_size = sc->usb.wMaxPacketSize_in;
+ }
- /* send read command */
- r=usb_bulk_write(sc->usb.dev, sc->usb.ep_bulk_out,
- (char*)req, sizeof(struct usbtmc_header), USB_TIMEOUT);
- USB_ERROR("USBTMC_REQUEST_DEV_DEP_MSG_IN", r);
+ bytes_read = 0;
+ do {
+ headerlen = 0;
- free(req);
+ if ((sc->usb.brokenRigol == 0) || (bytes_read == 0)) {
+ sc->usb.bTag++;
- buff=malloc(sc->usb.wMaxPacketSize_in);
- if (buff == NULL) {
- perror("malloc");
- exit(EXIT_FAILURE);
- }
+ req->MsgID = USBTMC_REQUEST_DEV_DEP_MSG_IN;
+ req->bTag = sc->usb.bTag;
+ req->bTagInverse = ~sc->usb.bTag;
+ req->TransferSize = LE32(USBTMC_IN_TRANSFERSIZE);
+ req->bmTransferAttributes = 0;
+ req->TermChar = 0;
- r=usb_bulk_read(sc->usb.dev, sc->usb.ep_bulk_in,
- (char*)buff, sc->usb.wMaxPacketSize_in, USB_TIMEOUT);
- USB_ERROR("USBTMC_DEV_DEP_MSG_IN1", r);
+ /* send read command */
+ r=usb_bulk_write(sc->usb.dev, sc->usb.ep_bulk_out,
+ (char*)req, sizeof(struct usbtmc_header), USB_TIMEOUT);
+ USB_ERROR("USBTMC_REQUEST_DEV_DEP_MSG_IN", r);
- if (r < sizeof(struct usbtmc_header)) {
- fprintf(stderr, "Short read!\n");
- return 0;
- }
+ headerlen = sizeof(struct usbtmc_header);
+ }
+
+ r=usb_bulk_read(sc->usb.dev, sc->usb.ep_bulk_in,
+ (char*)rxbuff, read_size, USB_TIMEOUT);
+ USB_ERROR("USBTMC_DEV_DEP_MSG_IN", r);
- bytes_read = r - sizeof(struct usbtmc_header);
-
- res = (struct usbtmc_header*)buff;
- len = LE32(res->TransferSize);
+ if (r < headerlen) {
+ fprintf(stderr, "Short read!\n");
+ return 0;
+ }
- memmove(buff, buff + sizeof(struct usbtmc_header), bytes_read);
+ if (headerlen > 0) {
+ res = (struct usbtmc_header*)rxbuff;
+
+ if ((res->bTag != sc->usb.bTag) ||
+ (res->bTagInverse != (unsigned char)(~sc->usb.bTag))) {
+ fprintf(stderr, "Wrong TAG received! We: 0x%02x, Scope: 0x%02x\n", sc->usb.bTag, res->bTag);
+ if (sc->usb.brokenRigol == 1) {
+ fprintf(stderr, "Tying to restart transfer...\n");
+ bytes_read = 0;
+ continue;
+ }
+ return 0;
+ }
- buff = realloc(buff, len);
- if (buff == NULL) {
- perror("realloc");
- exit(EXIT_FAILURE);
- }
+ if (buff == NULL) {
+ len = LE32(res->TransferSize);
+ buff=malloc(len);
+ if (buff == NULL) {
+ perror("malloc");
+ exit(EXIT_FAILURE);
+ }
+ }
+ }
- while ((len - bytes_read) > 0) {
- r=usb_bulk_read(sc->usb.dev, sc->usb.ep_bulk_in,
- (char*)buff + bytes_read, len - bytes_read,
- USB_TIMEOUT);
- USB_ERROR("USBTMC_DEV_DEP_MSG_INx", r);
+ if ((r - headerlen) > 0) {
+ memcpy(buff + bytes_read, rxbuff + headerlen, r - headerlen);
+ bytes_read += r - headerlen;
+ }
- bytes_read += r;
- }
+ read_size = USBTMC_IN_TRANSFERSIZE;
+ } while(bytes_read < len);
+
+ free(req);
/* TODO: FIXME */
if (bytes_read > resplen) {
}
usbtmc_claim(sc);
- usbtmc_get_capabilities(sc);
- printf("Device status: 0x%x\n", usbtmc_status(sc));
+ sc->usb.cap = usbtmc_get_capabilities(sc);
+ printf("Device status: 0x%x\n", usb488_status(sc));
/* The following code isn't really necessary, the program works
OK without it too. */
r=usb_control_msg(sc->usb.dev, 0xC8, 9, 0, 0, (char*)&vidpid, 4, USB_TIMEOUT);
projects / rigol / blobdiff