94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <errno.h>
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#include <libusb.h>
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//uncomment to DEBUG this file alone
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//#define DEBUG
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//"make debug" to get DEBUG msgs on entire program
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#include "dbg.h"
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#include "usb_operations.h"
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//control transfer request types
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//uint8_t libusb_control_setup::bmRequestType
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//Request type.
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// Bits 0:4 determine recipient, see libusb_request_recipient. Bits 5:6 determine type, see libusb_request_type. Bit 7 determines data transfer direction, see libusb_endpoint_direction.
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//
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//libusb_request_types:
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//LIBUSB_REQUEST_TYPE_STANDARD Standard handled by driver during setup/etc
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//LIBUSB_REQUEST_TYPE_CLASS Class for use with specific device classes like HID.
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//LIBUSB_REQUEST_TYPE_VENDOR Vendor application specific as we choose which is what we'll be utilizing for all transfers
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//LIBUSB_REQUEST_TYPE_RESERVED Reserved.
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//
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//libusb_request_recipients:
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//LIBUSB_RECIPIENT_DEVICE Device.
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//LIBUSB_RECIPIENT_INTERFACE Interface.
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//LIBUSB_RECIPIENT_ENDPOINT Endpoint.
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//LIBUSB_RECIPIENT_OTHER Other.
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//
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//LIBUSB_ENDPOINT_IN In: device-to-host.
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//LIBUSB_ENDPOINT_OUT Out: host-to-device.
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// vendor requests also defined in firmware
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// TODO put in combined .h file for both host and fw
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#define REQ_LED_ON 1
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#define REQ_LED_OFF 2
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//USB timeout
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#define SEC_5 5000
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int main(int argc, char *argv[])
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{
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//context set to NULL since only acting as single user of libusb
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libusb_context *context = NULL;
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libusb_device_handle *rprog_handle = NULL;
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rprog_handle = open_usb_device( context );
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check(rprog_handle != NULL, "Unable to open INL retro-prog usb device handle.");
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int xfr_cnt = 0;
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//uint8_t buffer8[8]; //8 is max payload for low speed devices' data packet
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//uint8_t buffer128[128]; //128 largest power of 2 for non-LONG_TRANSFERS with V-USB
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uint8_t buffer254[254]; //254 is max for non-LONG_TRANSFERS with V-USB
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//uint8_t buffer16k[16384]; //16384 is max for LONG_TRANSFERS with V-USB
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if (argc < 2) {
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printf("USAGE: inlretro <action o/f>\n");
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exit(1);
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}
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char action = argv[1][0];
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switch (action) {
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case 'o': //ON send REQ_LED_ON
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xfr_cnt = usb_write_to_device( rprog_handle,
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REQ_LED_ON, (unsigned char *)buffer254, sizeof(buffer254) );
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printf("total bytes xfrd: %d \n", xfr_cnt);
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break;
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case 'f':
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xfr_cnt = usb_write_to_device( rprog_handle,
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REQ_LED_OFF, (unsigned char *)buffer254, sizeof(buffer254) );
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printf("total bytes xfrd: %d \n", xfr_cnt);
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break;
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default:
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printf("Invalid action o-on f-off\n");
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exit(1);
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}
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close_usb( context, rprog_handle);
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return 0;
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error:
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printf("main program went to error\n");
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return 1;
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}
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