O problema é o seguinte, desenvolvi um periférico USB utilizando o PIC 18F4550 que através do Descriptor HID USB eu consigo que o Windows e o Linux reconheçam dois joystiks, porém a Raspberry pi 3 com Recalbox só reconhece um único joystik, enxuguei o programa no máximo que pude e não consegui fazer com que fosse reconhecido os dois joystiks na Raspberry Pi 3, nem com S.O Recalbox e nem com RetroPie, ambos reconhecem apenas um Joystick, se alguém puder ajudar a reconhecer os dois joysticks ou indicar alguém que saiba como fazer através de compensação financeira agradeceria muito. Segue o programa.
1. Programa Principal:
unsigned char readbuff[64] absolute 0x500; // Buffers should be in USB RAM, please consult datasheet unsigned char writebuff[64] absolute 0x540; void interrupt() { USB_Interrupt_Proc(); //função de execução dos serviços USB } //end interrupt void main() { HID_Enable(readbuff,writebuff); //Habilita a comunicação USB CMCON = 0x07; //Desabilita os comparadores while(1) { } //end while } //end main
2. Descriptor HID USB
const unsigned int USB_VENDOR_ID = 0x1234; const unsigned int USB_PRODUCT_ID = 0x0001; const char USB_SELF_POWER = 0x80; // Self powered 0xC0, 0x80 bus powered const char USB_MAX_POWER = 50; // Bus power required in units of 2 mA const char HID_INPUT_REPORT_BYTES = 64; const char HID_OUTPUT_REPORT_BYTES = 64; const char USB_TRANSFER_TYPE = 0x03; //0x03 Interrupt const char EP_IN_INTERVAL = 1; const char EP_OUT_INTERVAL = 1; const char USB_INTERRUPT = 1; //Se o valor da variável for 0 deverá utilizar a função USB_Polling_Proc(). Caso for 1 utilizará a função Usb_Interrupt_Proc(). const char USB_HID_IN_EP = 1; const char USB_HID_OUT_EP = 1; const char USB_HID_RPT_SIZE = 100; /* Device Descriptor */ const struct { char bLength; // bLength - Descriptor size in bytes (12h) char bDescriptorType; // bDescriptorType - The constant DEVICE (01h) unsigned int bcdUSB; // bcdUSB - USB specification release number (BCD) char bDeviceClass; // bDeviceClass - Class Code char bDeviceSubClass; // bDeviceSubClass - Subclass code char bDeviceProtocol; // bDeviceProtocol - Protocol code char bMaxPacketSize0; // bMaxPacketSize0 - Maximum packet size for endpoint 0 unsigned int idVendor; // idVendor - Vendor ID unsigned int idProduct; // idProduct - Product ID unsigned int bcdDevice; // bcdDevice - Device release number (BCD) char iManufacturer; // iManufacturer - Index of string descriptor for the manufacturer char iProduct; // iProduct - Index of string descriptor for the product. char iSerialNumber; // iSerialNumber - Index of string descriptor for the serial number. char bNumConfigurations; // bNumConfigurations - Number of possible configurations } device_dsc = { 0x12, // bLength 0x01, // bDescriptorType 0x0200, // bcdUSB 0x00, // bDeviceClass 0x00, // bDeviceSubClass 0x00, // bDeviceProtocol 8, // bMaxPacketSize0 USB_VENDOR_ID, // idVendor USB_PRODUCT_ID, // idProduct 0x0100, // bcdDevice 0x01, // iManufacturer 0x02, // iProduct 0x00, // iSerialNumber 0x01 // bNumConfigurations }; /* Configuration 1 Descriptor */ const char configDescriptor1[]= { // Configuration Descriptor 0x09, // bLength - Descriptor size in bytes 0x02, // bDescriptorType - The constant CONFIGURATION (02h) 0x29,0x00, // wTotalLength - The number of bytes in the configuration descriptor and all of its subordinate descriptors 1, // bNumInterfaces - Number of interfaces in the configuration 1, // bConfigurationValue - Identifier for Set Configuration and Get Configuration requests 0, // iConfiguration - Index of string descriptor for the configuration USB_SELF_POWER, // bmAttributes - Self/bus power and remote wakeup settings USB_MAX_POWER, // bMaxPower - Bus power required in units of 2 mA // Interface Descriptor 0x09, // bLength - Descriptor size in bytes (09h) 0x04, // bDescriptorType - The constant Interface (04h) 0, // bInterfaceNumber - Number identifying this interface 0, // bAlternateSetting - A number that identifies a descriptor with alternate settings for this bInterfaceNumber. 2, // bNumEndpoint - Number of endpoints supported not counting endpoint zero 0x03, // bInterfaceClass - Class code 0, // bInterfaceSubclass - Subclass code 0, // bInterfaceProtocol - Protocol code 0, // iInterface - Interface string index // HID Class-Specific Descriptor 0x09, // bLength - Descriptor size in bytes. 0x21, // bDescriptorType - This descriptor's type: 21h to indicate the HID class. 0x01,0x01, // bcdHID - HID specification release number (BCD). 0x00, // bCountryCode - Numeric expression identifying the country for localized hardware (BCD) or 00h. 1, // bNumDescriptors - Number of subordinate report and physical descriptors. 0x22, // bDescriptorType - The type of a class-specific descriptor that follows USB_HID_RPT_SIZE,0x00, // wDescriptorLength - Total length of the descriptor identified above. // Endpoint Descriptor 0x07, // bLength - Descriptor size in bytes (07h) 0x05, // bDescriptorType - The constant Endpoint (05h) USB_HID_IN_EP | 0x80, // bEndpointAddress - Endpoint number and direction USB_TRANSFER_TYPE, // bmAttributes - Transfer type and supplementary information 0x40,0x00, // wMaxPacketSize - Maximum packet size supported EP_IN_INTERVAL, // bInterval - Service interval or NAK rate // Endpoint Descriptor 0x07, // bLength - Descriptor size in bytes (07h) 0x05, // bDescriptorType - The constant Endpoint (05h) USB_HID_OUT_EP, // bEndpointAddress - Endpoint number and direction USB_TRANSFER_TYPE, // bmAttributes - Transfer type and supplementary information 0x40,0x00, // wMaxPacketSize - Maximum packet size supported EP_OUT_INTERVAL // bInterval - Service interval or NAK rate }; const struct { char report[]; } hid_rpt_desc = { 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x05, // USAGE (Game Pad) 0xa1, 0x01, // COLLECTION (Application) 0xa1, 0x00, // COLLECTION (Physical) 0x85, 0x01, // REPORT_ID (1) 0x05, 0x09, // USAGE_PAGE (Button) 0x19, 0x01, // USAGE_MINIMUM (Button 1) 0x29, 0x0e, // USAGE_MAXIMUM (Button 14) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x01, // LOGICAL_MAXIMUM (1) 0x95, 0x0e, // REPORT_COUNT (14) 0x75, 0x01, // REPORT_SIZE (1) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x02, // REPORT_SIZE (2) 0x81, 0x03, // INPUT (Cnst,Var,Abs) 0x09, 0x30, // USAGE (X) 0x09, 0x31, // USAGE (Y) 0x15, 0xff, // LOGICAL_MINIMUM (-1) 0x25, 0x01, // LOGICAL_MAXIMUM (1) 0x75, 0x08, // REPORT_SIZE (8) 0x95, 0x02, // REPORT_COUNT (2) 0x81, 0x02, // INPUT (Data,Var,Abs) 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x05, // USAGE (Game Pad) 0xa1, 0x01, // COLLECTION (Application) 0xa1, 0x00, // COLLECTION (Physical) 0x85, 0x02, // REPORT_ID (2) 0x05, 0x09, // USAGE_PAGE (Button) 0x19, 0x01, // USAGE_MINIMUM (Button 1) 0x29, 0x0e, // USAGE_MAXIMUM (Button 14) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x01, // LOGICAL_MAXIMUM (1) 0x95, 0x0e, // REPORT_COUNT (14) 0x75, 0x01, // REPORT_SIZE (1) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x02, // REPORT_SIZE (2) 0x81, 0x03, // INPUT (Cnst,Var,Abs) 0x09, 0x30, // USAGE (X) 0x09, 0x31, // USAGE (Y) 0x15, 0xff, // LOGICAL_MINIMUM (-1) 0x25, 0x01, // LOGICAL_MAXIMUM (1) 0x75, 0x08, // REPORT_SIZE (8) 0x95, 0x02, // REPORT_COUNT (2) 0x81, 0x02, // INPUT (Data,Var,Abs) 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION }; //Language code string descriptor const struct { char bLength; char bDscType; unsigned int string[1]; } strd1 = { 4, 0x03, {0x0409} }; //Manufacturer string descriptor const struct{ char bLength; char bDscType; unsigned int string[17]; }strd2={ 36, //sizeof this descriptor string 0x03, {'E','l','i','s','o','n','-','E','l','e','t','r','o','n','i','c','s'} }; //Product string descriptor const struct{ char bLength; char bDscType; unsigned int string[10]; }strd3={ 22, //sizeof this descriptor string 0x03, {'M','u','l','t','i','j','o','g','o','s'} }; //Array of configuration descriptors const char* USB_config_dsc_ptr[1]; //Array of string descriptors const char* USB_string_dsc_ptr[3]; void USB_Init_Desc(){ USB_config_dsc_ptr[0] = &configDescriptor1; USB_string_dsc_ptr[0] = (const char*)&strd1; USB_string_dsc_ptr[1] = (const char*)&strd2; USB_string_dsc_ptr[2] = (const char*)&strd3; }