9c066355
henyxia
USB Initialized
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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <libusb-1.0/libusb.h>
#include "usb.h"
#define VENDOR_ID 0xfccf
#define PRODUCT_ID 0xa001
#define ENDPOINT_OUT 0x01
#define MAX_SIZE_OUT 64
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#define HEIGHT 240
#define WIDTH 320
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USB Initialized
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libusb_device_handle* screenHandle;
unsigned char data[MAX_SIZE_OUT];
unsigned short dataPointer = 0;
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void blackScreen(void)
{
unsigned char data[] = {0x81, 0x00, 0x00};
int transfered;
libusb_bulk_transfer(screenHandle, ENDPOINT_OUT, data, 3, &transfered, 0);
}
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void fillDataWithHeader(void)
{
data[dataPointer] = 0x82; // HEADER
dataPointer++;
data[dataPointer] = 0x00; // XPOS
dataPointer++;
data[dataPointer] = 0x00; // XPOS
dataPointer++;
data[dataPointer] = 0x00; // YPOS
dataPointer++;
data[dataPointer] = 0x00; // YPOS
dataPointer++;
data[dataPointer] = 0x40; // Width 0x40
dataPointer++;
data[dataPointer] = 0x01; // Width 0x01
dataPointer++;
data[dataPointer] = 0xF0; // Height
dataPointer++;
data[dataPointer] = 0x00; // Height
dataPointer++;
data[dataPointer] = 0x00; // Copy
dataPointer++;
}
void fillDataWithSubHeader(void)
{
data[dataPointer] = 0x02; // HEADER
dataPointer++;
}
void sendUSBData(int i)
{
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//printf("Sending data %d\n", i);
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int transfered;
libusb_bulk_transfer(screenHandle, ENDPOINT_OUT, data, dataPointer, &transfered, 0);
dataPointer = 0;
fillDataWithSubHeader();
}
void displayPicture(char* filename)
{
FILE* file = NULL;
file = fopen(filename, "r");
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henyxia
Low IPS
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dataPointer = 0;
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if(file == NULL)
{
printf("Unable to open the picture\n");
return;
}
else
printf("Picture successfully opened\n");
fillDataWithHeader();
for(int i=0; i<HEIGHT*WIDTH*2; i++)
{
if(feof(file))
{
printf("File corrupted\n");
return;
}
data[dataPointer] = getc(file);
dataPointer++;
if(dataPointer == MAX_SIZE_OUT)
sendUSBData(i);
}
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if(dataPointer != 0)
sendUSBData(-1);
printf("Screen updated\n");
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}
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bool initUSB(void)
{
int ret;
ret = libusb_init(NULL);
if(ret != 0)
{
printf("Error while initializing libusb, return : %d\n", ret);
return false;
}
struct libusb_config_descriptor* dConfig = NULL;
libusb_device** list = NULL;
ssize_t cnt = libusb_get_device_list(NULL, &list);
struct libusb_device_descriptor dDevice;
printf("Starting lsusb things\n");
if(cnt < 0)
{
printf("Unable to get USB device list\n");
return false;
}
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printf("%d devices detected\n", (int)cnt);
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printf("List of compatible devices detected\n");
for (int i = 0; i < cnt; i++)
{
libusb_device *device = list[i];
ret = libusb_get_device_descriptor(device, &dDevice);
if(VENDOR_ID == dDevice.idVendor && PRODUCT_ID == dDevice.idProduct)
{
printf("Bus %03d Device %03d: ID %04x:%04x\n",
libusb_get_bus_number(device),
libusb_get_device_address(device), dDevice.idVendor,
dDevice.idProduct);
ret = libusb_open(device, &screenHandle);
if(ret != 0)
{
printf("Unable to open this device, error %d\n", ret);
return false;
}
}
}
libusb_free_device_list(list, 1);
ret = libusb_get_config_descriptor(libusb_get_device(screenHandle), 0, &dConfig);
if(ret!=0)
{
printf("Descriptor for this device unavailable\n");
return false;
}
else
{
for(int j=0; j<dConfig->bNumInterfaces; j++)
{
if(libusb_kernel_driver_active(screenHandle, j) && (libusb_detach_kernel_driver(screenHandle, j) != 0))
{
printf("Unable to detach this device\n");
return false;
}
}
ret = libusb_set_configuration(screenHandle, dConfig->bConfigurationValue);
if(ret != 0)
{
printf("Configuration unavailable, error %d\n", ret);
return false;
}
for(int j=0; j<dConfig->bNumInterfaces; j++)
if(libusb_claim_interface(screenHandle, j) != 0)
{
printf("Device not claimed\n");
return false;
}
else
printf("Interface %d ready\n", j);
}
libusb_free_config_descriptor(dConfig);
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displayPicture("img/home.boz");
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return true;
}
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