Working on PoC, trying to get bulk_transfer to work

8051.c

@@ -0,0 +1,136 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <libusb-1.0/libusb.h>
+
+#define EZP2010_VID 0x10c4
+#define EZP2010_PID 0xf5a0
+
+/* $ lsusb -d 10c4:f5a0 -v
+
+Bus 001 Device 053: ID 10c4:f5a0 Cygnal Integrated Products, Inc. 
+Couldn't open device, some information will be missing
+Device Descriptor:
+  bLength                18
+  bDescriptorType         1
+  bcdUSB               2.00
+  bDeviceClass            0 
+  bDeviceSubClass         0 
+  bDeviceProtocol         0 
+  bMaxPacketSize0        64
+  idVendor           0x10c4 Cygnal Integrated Products, Inc.
+  idProduct          0xf5a0 
+  bcdDevice            0.00
+  iManufacturer           0 
+  iProduct                0 
+  iSerial                 0 
+  bNumConfigurations      1
+  Configuration Descriptor:
+    bLength                 9
+    bDescriptorType         2
+    wTotalLength       0x0020
+    bNumInterfaces          1
+    bConfigurationValue     1
+    iConfiguration          0 
+    bmAttributes         0x80
+      (Bus Powered)
+    MaxPower              480mA
+    Interface Descriptor:
+      bLength                 9
+      bDescriptorType         4
+      bInterfaceNumber        0
+      bAlternateSetting       0
+      bNumEndpoints           2
+      bInterfaceClass         0 
+      bInterfaceSubClass      0 
+      bInterfaceProtocol      0 
+      iInterface              0 
+      Endpoint Descriptor:
+        bLength                 7
+        bDescriptorType         5
+        bEndpointAddress     0x81  EP 1 IN
+        bmAttributes            2
+          Transfer Type            Bulk
+          Synch Type               None
+          Usage Type               Data
+        wMaxPacketSize     0x0040  1x 64 bytes
+        bInterval               5
+      Endpoint Descriptor:
+        bLength                 7
+        bDescriptorType         5
+        bEndpointAddress     0x02  EP 2 OUT
+        bmAttributes            2
+          Transfer Type            Bulk
+          Synch Type               None
+          Usage Type               Data
+        wMaxPacketSize     0x0040  1x 64 bytes
+        bInterval               5
+*/
+
+libusb_context *ctx;
+libusb_device_handle *dev;
+
+int main(int argc, char *argv[])
+{
+    int r = 0;
+    int transfered = 0;
+
+    libusb_init(&ctx);
+    libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, LIBUSB_LOG_LEVEL_DEBUG);
+
+    dev = libusb_open_device_with_vid_pid(ctx, EZP2010_VID, EZP2010_PID);
+    if (dev) {
+        r = libusb_set_configuration(dev, 0);
+        if (r > 0) {
+            perror("libusb_set_configuration");
+        }
+
+        r = libusb_claim_interface(dev, 0);
+        if (r > 0) {
+            perror("libusb_claim_interface");
+        }
+
+        r = libusb_set_interface_alt_setting(dev, 0, 0);
+        if (r > 0) {
+            perror("libusb_set_configuration");
+        }
+
+        printf("set control\n");
+        // LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT = 0x40
+        r = libusb_control_transfer(dev, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT, 0, 0xffff, 0, NULL, 0, 500);
+        if (r > 0) {
+            perror("libusb_control_transfer");
+        }
+
+        r = libusb_control_transfer(dev, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT, 1, 0x2000, 0, NULL, 0, 500);
+        if (r > 0) {
+            perror("libusb_control_transfer");
+        }
+
+        printf("set control\n");
+
+        unsigned char bufferOut[2] = {'\x17', '\0'};
+        r = libusb_bulk_transfer(dev, 0x81, bufferOut, 2, &transfered, 500);
+        if (r > 0) {
+            perror("libusb_bulk_transfer");
+        }
+        printf("Bytes sent: %d\n", transfered);
+
+        unsigned char bufferIn[256] = {0};
+        r = libusb_interrupt_transfer(dev, 0x02, bufferIn, 0x20, &transfered, 500);
+        if (r > 0) {
+            perror("libusb_bulk_transfer");
+        }
+        printf("Bytes received: %d\n", transfered);
+        printf("Packet: %s\n", bufferIn);
+
+        r = libusb_release_interface(dev, 0);
+        if (r > 0) {
+            perror("libusb_release_interface");
+        }
+        libusb_close(dev);
+    }
+
+    libusb_exit(ctx);
+
+}

CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required (VERSION 2.8)
+
+project(8051)
+
+add_definitions('-g')
+add_definitions('-Wall')
+
+add_executable(${PROJECT_NAME} ${PROJECT_NAME}.c)
+
+target_link_libraries(${PROJECT_NAME} usb-1.0)