From f416d675a06903504d86cab1e7b1065b98ab5705 Mon Sep 17 00:00:00 2001 From: Michael Gernoth Date: Tue, 26 Mar 2013 20:09:58 +0100 Subject: [PATCH] update to libusb-1.0 --- Makefile | 2 +- scope.h | 4 +- usbtmc.c | 171 +++++++++++++++++++++++++++++++++++++------------------ 3 files changed, 120 insertions(+), 57 deletions(-) diff --git a/Makefile b/Makefile index 12b4cc7..fe465ed 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ OFILES=png.o usbtmc.o commands.o scope.o CFLAGS=-O2 -Wall -I/opt/local/include -g -LDFLAGS=-L/opt/local/lib -lusb -lreadline -lz +LDFLAGS=-L/opt/local/lib -lusb-1.0 -lreadline -lz CC=gcc all: rigol rigold raw2gp diff --git a/scope.h b/scope.h index a74809b..6c4f954 100644 --- a/scope.h +++ b/scope.h @@ -40,7 +40,7 @@ struct channel_s { struct scope { struct { - struct usb_dev_handle *dev; + struct libusb_device_handle *dev; int ep_bulk_out; int ep_bulk_in; unsigned int wMaxPacketSize_in; @@ -101,6 +101,8 @@ struct scope { } timebase; struct { + char mode[32]; + /* TODO */ } trigger; diff --git a/usbtmc.c b/usbtmc.c index d87d9ac..5f15d72 100644 --- a/usbtmc.c +++ b/usbtmc.c @@ -1,7 +1,9 @@ #include #include #include -#include +#include +#include +#include #include #include "scope.h" @@ -10,6 +12,9 @@ #define USB_TIMEOUT 10000 #define USBTMC_IN_TRANSFERSIZE 0x800 +#define ID_VENDOR 0x400 +#define ID_PRODUCT 0x5dc + #if BYTE_ORDER == LITTLE_ENDIAN #define LE32(x) x #elif BYTE_ORDER == BIG_ENDIAN @@ -19,43 +24,95 @@ #endif /* TODO: fix memory leak here: */ -#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) +#define USB_ERROR(s, x) do { if (x < 0) { fprintf(stderr, "usb %s: %s\n", s, usb_strerror(x)); usbtmc_clear(sc); return 0; } } while(0) + +/* Not in all libusb-1.0 versions, so we have to roll our own :-( */ +static char * usb_strerror(int e) +{ + static char unknerr[256]; + + switch (e) { + case LIBUSB_SUCCESS: + return "Success"; + case LIBUSB_ERROR_IO: + return "Input/output error"; + case LIBUSB_ERROR_INVALID_PARAM: + return "Invalid parameter"; + case LIBUSB_ERROR_ACCESS: + return "Access denied (insufficient permissions)"; + case LIBUSB_ERROR_NO_DEVICE: + return "No such device (it may have been disconnected)"; + case LIBUSB_ERROR_NOT_FOUND: + return "Entity not found"; + case LIBUSB_ERROR_BUSY: + return "Resource busy"; + case LIBUSB_ERROR_TIMEOUT: + return "Operation timed out"; + case LIBUSB_ERROR_OVERFLOW: + return "Overflow"; + case LIBUSB_ERROR_PIPE: + return "Pipe error"; + case LIBUSB_ERROR_INTERRUPTED: + return "System call interrupted (perhaps due to signal)"; + case LIBUSB_ERROR_NO_MEM: + return "Insufficient memory"; + case LIBUSB_ERROR_NOT_SUPPORTED: + return "Operation not supported or unimplemented on this platform"; + case LIBUSB_ERROR_OTHER: + return "Other error"; + }; + snprintf(unknerr, sizeof(unknerr), "Unknown error code %d / 0x%02x", e, e); + return unknerr; +} /* This routine locates a scope by VID/PID and returns a struct scope* for it */ static struct scope* usbtmc_find_scope() { - struct usb_bus *bus; - struct usb_device *dev=NULL; - struct usb_dev_handle *devh; - + libusb_device_handle *devh = NULL; + libusb_device **list; + ssize_t cnt; + ssize_t i; + int err; struct scope *sc; - usb_find_busses(); - usb_find_devices(); + cnt = libusb_get_device_list(NULL, &list); + if (cnt < 0) { + fprintf(stderr, "Can't get USB device list: %d\n", (int)cnt); + return NULL; + } + + for (i = 0; i < cnt; i++){ + struct libusb_device_descriptor desc; - for (bus=usb_busses; bus; bus=bus->next) { - for (dev=bus->devices; dev; dev=dev->next) { - if (dev->descriptor.idVendor == 0x400 && dev->descriptor.idProduct == 0x5dc) { - devh = usb_open(dev); - if (devh == NULL) - return NULL; + err = libusb_get_device_descriptor(list[i], &desc); + if (err) + continue; - sc = calloc(1, sizeof(struct scope)); - if (sc == NULL) { - perror("calloc"); - exit(EXIT_FAILURE); - } + if ((desc.idVendor == ID_VENDOR) && (desc.idProduct == ID_PRODUCT)) { + libusb_device *dev = list[i]; - sc->usb.dev = devh; + err = libusb_open(dev, &devh); + if (err) { + fprintf(stderr, "Can't open device: %d\n", err); + return NULL; + } - /* TODO: FIXME */ - sc->usb.brokenRigol = 1; - sc->usb.ep_bulk_out = 0x01; - sc->usb.ep_bulk_in = 0x82; - sc->usb.wMaxPacketSize_in = 0x40; - - return sc; + sc = calloc(1, sizeof(struct scope)); + if (sc == NULL) { + perror("calloc"); + exit(EXIT_FAILURE); } + + sc->usb.dev = devh; + + /* TODO: FIXME */ + sc->usb.brokenRigol = 1; + sc->usb.ep_bulk_out = 0x01; + sc->usb.ep_bulk_in = 0x82; + sc->usb.wMaxPacketSize_in = 0x40; + + return sc; } + } return NULL; @@ -68,9 +125,9 @@ static unsigned char usb488_status(struct scope *sc) sc->usb.bTag++; - r = usb_control_msg(sc->usb.dev, 0xA1, + r = libusb_control_transfer(sc->usb.dev, 0xA1, USB488_CTL_READ_STATUS_BYTE, - (sc->usb.bTag & 0x7f), 0, (char*)status, 3, + (sc->usb.bTag & 0x7f), 0, status, 3, USB_TIMEOUT); if ((r != 3) || (status[0] != USBTMC_STATUS_SUCCESS) || (status[1] != (sc->usb.bTag & 0x7f))) { @@ -86,12 +143,12 @@ static struct usbtmc_capabilities* usbtmc_get_capabilities(struct scope *sc) int r; static struct usbtmc_capabilities res; - r = usb_control_msg(sc->usb.dev, 0xA1, + r = libusb_control_transfer(sc->usb.dev, 0xA1, USBTMC_CTL_GET_CAPABILITIES, - 0, 0, (char*)&res, sizeof(struct usbtmc_capabilities), + 0, 0, (unsigned char*)&res, sizeof(struct usbtmc_capabilities), USB_TIMEOUT); if (r != sizeof(struct usbtmc_capabilities)) { - printf("GET_CAPABILITIES failed: %s\n", usb_strerror()); + printf("GET_CAPABILITIES failed: %s\n", usb_strerror(r)); return NULL; } @@ -136,7 +193,7 @@ static struct usbtmc_capabilities* usbtmc_get_capabilities(struct scope *sc) void usbtmc_reset(struct scope *sc) { - usb_reset(sc->usb.dev); + libusb_reset_device(sc->usb.dev); usbtmc_claim(sc); } @@ -146,13 +203,13 @@ static void usbtmc_clear(struct scope *sc) unsigned char status[2]; printf("Initiating clear...\n"); - r = usb_control_msg(sc->usb.dev, 0xA1, + r = libusb_control_transfer(sc->usb.dev, 0xA1, USBTMC_CTL_INITIATE_CLEAR, - 0, 0, (char*)status, 1, + 0, 0, status, 1, USB_TIMEOUT); if ((r != 1) || status[0] != USBTMC_STATUS_SUCCESS) { - printf("INITIATE_CLEAR failed (0x%x): %s\n", status[0], usb_strerror()); + printf("INITIATE_CLEAR failed (0x%x): %s\n", status[0], usb_strerror(r)); usbtmc_reset(sc); return; } @@ -161,13 +218,13 @@ static void usbtmc_clear(struct scope *sc) usleep(100000); printf("Waiting for clear to complete...\n"); - r = usb_control_msg(sc->usb.dev, 0xA1, + r = libusb_control_transfer(sc->usb.dev, 0xA1, USBTMC_CTL_CHECK_CLEAR_STAT, - 0, 0, (char*)status, 2, + 0, 0, status, 2, USB_TIMEOUT); if (r != 2) { - printf("CHECK_CLEAR failed: %s\n", usb_strerror()); + printf("CHECK_CLEAR failed: %s\n", usb_strerror(r)); return; } @@ -191,7 +248,9 @@ static void usbtmc_clear(struct scope *sc) int usbtmc_sendscpi(struct scope *sc, char* cmd, unsigned char *resp, int resplen) { int len,r; + int err; int cmdlen = strlen(cmd); + int transferred; struct usbtmc_header *req; sc->usb.bTag++; @@ -214,18 +273,20 @@ int usbtmc_sendscpi(struct scope *sc, char* cmd, memcpy(req->msg, cmd, cmdlen); if (sc->usb.brokenRigol) { - r=usb_bulk_write(sc->usb.dev, sc->usb.ep_bulk_out, - (char*)req, sizeof(struct usbtmc_header), + r=libusb_bulk_transfer(sc->usb.dev, sc->usb.ep_bulk_out, + (unsigned char*)req, sizeof(struct usbtmc_header), + &transferred, USB_TIMEOUT); USB_ERROR("USBTMC_DEV_DEP_MSG_OUT1", r); - r=usb_bulk_write(sc->usb.dev, sc->usb.ep_bulk_out, - (char*)&(req->msg), len - sizeof(struct usbtmc_header), + r=libusb_bulk_transfer(sc->usb.dev, sc->usb.ep_bulk_out, + (unsigned char*)&(req->msg), len - sizeof(struct usbtmc_header), + &transferred, USB_TIMEOUT); USB_ERROR("USBTMC_DEV_DEP_MSG_OUT2", r); } else { - r=usb_bulk_write(sc->usb.dev, sc->usb.ep_bulk_out, - (char*)req, len, USB_TIMEOUT); + r=libusb_bulk_transfer(sc->usb.dev, sc->usb.ep_bulk_out, + (unsigned char*)req, len, &transferred, USB_TIMEOUT); USB_ERROR("USBTMC_DEV_DEP_MSG_OUT", r); } @@ -264,16 +325,16 @@ int usbtmc_sendscpi(struct scope *sc, char* cmd, req->TermChar = 0; /* send read command */ - r=usb_bulk_write(sc->usb.dev, sc->usb.ep_bulk_out, - (char*)req, sizeof(struct usbtmc_header), USB_TIMEOUT); + r=libusb_bulk_transfer(sc->usb.dev, sc->usb.ep_bulk_out, + (unsigned char*)req, sizeof(struct usbtmc_header), &transferred, USB_TIMEOUT); USB_ERROR("USBTMC_REQUEST_DEV_DEP_MSG_IN", r); 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); + err=libusb_bulk_transfer(sc->usb.dev, sc->usb.ep_bulk_in, + (unsigned char*)rxbuff, read_size, &r, USB_TIMEOUT); + USB_ERROR("USBTMC_DEV_DEP_MSG_IN", err); if (r < headerlen) { fprintf(stderr, "Short read!\n"); @@ -331,12 +392,12 @@ int usbtmc_sendscpi(struct scope *sc, char* cmd, void usbtmc_claim(struct scope *sc) { - usb_claim_interface(sc->usb.dev, 0); + libusb_claim_interface(sc->usb.dev, 0); } void usbtmc_release(struct scope *sc) { - usb_release_interface(sc->usb.dev, 0); + libusb_release_interface(sc->usb.dev, 0); } /* Initialize the scope. */ @@ -346,7 +407,7 @@ struct scope* usbtmc_initscope(void) { struct scope *sc; /* Init libusb */ - usb_init(); + libusb_init(NULL); /* Locate and open the scope */ sc = usbtmc_find_scope(); if (!sc) { @@ -358,7 +419,7 @@ struct scope* usbtmc_initscope(void) { 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); + r=libusb_control_transfer(sc->usb.dev, 0xC8, 9, 0, 0, (unsigned char*)&vidpid, 4, USB_TIMEOUT); usbtmc_release(sc); if (r < 0) { fprintf (stderr, "Error %d sending init message: %s\n", @@ -375,5 +436,5 @@ struct scope* usbtmc_initscope(void) { void usbtmc_close(struct scope *sc) { /* Free up and exit */ - usb_close(sc->usb.dev); + libusb_close(sc->usb.dev); } -- 2.39.5