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gc_n64_usb-v3
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gc_n64_usb-v3/main.c

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/* gc_n64_usb : Gamecube or N64 controller to USB adapter firmware
Copyright (C) 2007-2016 Raphael Assenat <raph@raphnet.net>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "main.h"
#include "util.h"
#include "usart1.h"
#include "usb.h"
#include "gamepads.h"
#include "bootloader.h"
#include "gcn64_protocol.h"
#include "n64.h"
#include "gamecube.h"
#include "usbpad.h"
#include "eeprom.h"
#include "hiddata.h"
#include "usbstrings.h"
#include "intervaltimer.h"
#include "requests.h"
#define MAX_PLAYERS 2
#define GCN64_USB_PID 0x001D
#define N64_USB_PID 0x0020
#define GC_USB_PID 0x0021
#define DUAL_GCN64_USB_PID 0x0022
#define DUAL_N64_USB_PID 0x0030
#define DUAL_GC_USB_PID 0x0031
/* Those .c files are included rather than linked for we
* want the sizeof() operator to work on the arrays */
#include "reportdesc.c"
#include "dataHidReport.c"
#define MAX_READ_ERRORS 30
struct cfg0 {
struct usb_configuration_descriptor configdesc;
struct usb_interface_descriptor interface;
struct usb_hid_descriptor hid;
struct usb_endpoint_descriptor ep1_in;
struct usb_interface_descriptor interface_admin;
struct usb_hid_descriptor hid_data;
struct usb_endpoint_descriptor ep2_in;
};
static const struct cfg0 cfg0 PROGMEM = {
.configdesc = {
.bLength = sizeof(struct usb_configuration_descriptor),
.bDescriptorType = CONFIGURATION_DESCRIPTOR,
.wTotalLength = sizeof(cfg0), // includes all descriptors returned together
.bNumInterfaces = 1 + 1, // one interface per player + one management interface
.bConfigurationValue = 1,
.bmAttributes = CFG_DESC_ATTR_RESERVED, // set Self-powred and remote-wakeup here if needed.
.bMaxPower = 25, // for 50mA
},
// Main interface, HID (player 1)
.interface = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = INTERFACE_DESCRIPTOR,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_DEVICE_CLASS_HID,
.bInterfaceSubClass = HID_SUBCLASS_NONE,
.bInterfaceProtocol = HID_PROTOCOL_NONE,
},
.hid = {
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = HID_DESCRIPTOR,
.bcdHid = 0x0101,
.bCountryCode = HID_COUNTRY_NOT_SUPPORTED,
.bNumDescriptors = 1, // Only a report descriptor
.bClassDescriptorType = REPORT_DESCRIPTOR,
.wClassDescriptorLength = sizeof(gcn64_usbHidReportDescriptor),
},
.ep1_in = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = ENDPOINT_DESCRIPTOR,
.bEndpointAddress = USB_RQT_DEVICE_TO_HOST | 1, // 0x81
.bmAttributes = TRANSFER_TYPE_INT,
.wMaxPacketsize = 16,
.bInterval = LS_FS_INTERVAL_MS(1),
},
// Second HID interface for config and update
.interface_admin = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = INTERFACE_DESCRIPTOR,
.bInterfaceNumber = 1,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_DEVICE_CLASS_HID,
.bInterfaceSubClass = HID_SUBCLASS_NONE,
.bInterfaceProtocol = HID_PROTOCOL_NONE,
},
.hid_data = {
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = HID_DESCRIPTOR,
.bcdHid = 0x0101,
.bCountryCode = HID_COUNTRY_NOT_SUPPORTED,
.bNumDescriptors = 1, // Only a report descriptor
.bClassDescriptorType = REPORT_DESCRIPTOR,
.wClassDescriptorLength = sizeof(dataHidReport),
},
.ep2_in = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = ENDPOINT_DESCRIPTOR,
.bEndpointAddress = USB_RQT_DEVICE_TO_HOST | 2, // 0x82
.bmAttributes = TRANSFER_TYPE_INT,
.wMaxPacketsize = 64,
.bInterval = LS_FS_INTERVAL_MS(1),
},
};
struct cfg0_2p {
struct usb_configuration_descriptor configdesc;
struct usb_interface_descriptor interface;
struct usb_hid_descriptor hid;
struct usb_endpoint_descriptor ep1_in;
struct usb_interface_descriptor interface_admin;
struct usb_hid_descriptor hid_data;
struct usb_endpoint_descriptor ep2_in;
struct usb_interface_descriptor interface_p2;
struct usb_hid_descriptor hid_p2;
struct usb_endpoint_descriptor ep3_in;
};
static const struct cfg0_2p cfg0_2p PROGMEM = {
.configdesc = {
.bLength = sizeof(struct usb_configuration_descriptor),
.bDescriptorType = CONFIGURATION_DESCRIPTOR,
.wTotalLength = sizeof(cfg0_2p), // includes all descriptors returned together
.bNumInterfaces = 2 + 1, // one interface per player + one management interface
.bConfigurationValue = 1,
.bmAttributes = CFG_DESC_ATTR_RESERVED, // set Self-powred and remote-wakeup here if needed.
.bMaxPower = 25, // for 50mA
},
// Main interface, HID (player 1)
.interface = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = INTERFACE_DESCRIPTOR,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_DEVICE_CLASS_HID,
.bInterfaceSubClass = HID_SUBCLASS_NONE,
.bInterfaceProtocol = HID_PROTOCOL_NONE,
},
.hid = {
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = HID_DESCRIPTOR,
.bcdHid = 0x0101,
.bCountryCode = HID_COUNTRY_NOT_SUPPORTED,
.bNumDescriptors = 1, // Only a report descriptor
.bClassDescriptorType = REPORT_DESCRIPTOR,
.wClassDescriptorLength = sizeof(gcn64_usbHidReportDescriptor),
},
.ep1_in = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = ENDPOINT_DESCRIPTOR,
.bEndpointAddress = USB_RQT_DEVICE_TO_HOST | 1, // 0x81
.bmAttributes = TRANSFER_TYPE_INT,
.wMaxPacketsize = 16,
.bInterval = LS_FS_INTERVAL_MS(1),
},
// Second HID interface for config and update
.interface_admin = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = INTERFACE_DESCRIPTOR,
.bInterfaceNumber = 1,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_DEVICE_CLASS_HID,
.bInterfaceSubClass = HID_SUBCLASS_NONE,
.bInterfaceProtocol = HID_PROTOCOL_NONE,
},
.hid_data = {
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = HID_DESCRIPTOR,
.bcdHid = 0x0101,
.bCountryCode = HID_COUNTRY_NOT_SUPPORTED,
.bNumDescriptors = 1, // Only a report descriptor
.bClassDescriptorType = REPORT_DESCRIPTOR,
.wClassDescriptorLength = sizeof(dataHidReport),
},
.ep2_in = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = ENDPOINT_DESCRIPTOR,
.bEndpointAddress = USB_RQT_DEVICE_TO_HOST | 2, // 0x82
.bmAttributes = TRANSFER_TYPE_INT,
.wMaxPacketsize = 64,
.bInterval = LS_FS_INTERVAL_MS(1),
},
// Main interface, HID (player 2)
.interface_p2 = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = INTERFACE_DESCRIPTOR,
.bInterfaceNumber = 2,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_DEVICE_CLASS_HID,
.bInterfaceSubClass = HID_SUBCLASS_NONE,
.bInterfaceProtocol = HID_PROTOCOL_NONE,
},
.hid_p2 = {
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = HID_DESCRIPTOR,
.bcdHid = 0x0101,
.bCountryCode = HID_COUNTRY_NOT_SUPPORTED,
.bNumDescriptors = 1, // Only a report descriptor
.bClassDescriptorType = REPORT_DESCRIPTOR,
.wClassDescriptorLength = sizeof(gcn64_usbHidReportDescriptor),
},
.ep3_in = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = ENDPOINT_DESCRIPTOR,
.bEndpointAddress = USB_RQT_DEVICE_TO_HOST | 3, // 0x83
.bmAttributes = TRANSFER_TYPE_INT,
.wMaxPacketsize = 16,
.bInterval = LS_FS_INTERVAL_MS(1),
},
};
struct usb_device_descriptor device_descriptor = {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = DEVICE_DESCRIPTOR,
.bcdUSB = 0x0101,
.bDeviceClass = 0, // set at interface
.bDeviceSubClass = 0, // set at interface
.bDeviceProtocol = 0,
.bMaxPacketSize = 64,
.idVendor = 0x289B,
.idProduct = GCN64_USB_PID,
.bcdDevice = 0x0300, // 1.0.0
.bNumConfigurations = 1,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
};
/** **/
static uint16_t _usbpad_hid_get_report(void *ctx, struct usb_request *rq, const uint8_t **dat)
{
return usbpad_hid_get_report((struct usbpad*)ctx, rq, dat);
}
static uint8_t _usbpad_hid_set_report(void *ctx, const struct usb_request *rq, const uint8_t *dat, uint16_t len)
{
return usbpad_hid_set_report((struct usbpad*)ctx, rq, dat, len);
}
static struct usb_parameters usb_params = {
.flags = USB_PARAM_FLAG_CONFDESC_PROGMEM |
USB_PARAM_FLAG_REPORTDESC_PROGMEM,
.devdesc = (PGM_VOID_P)&device_descriptor,
.configdesc = (PGM_VOID_P)&cfg0, // Patched in main() for two players
.configdesc_ttllen = sizeof(cfg0), // Patched in main() for two players
.num_strings = NUM_USB_STRINGS,
.strings = g_usb_strings,
.n_hid_interfaces = 1 + 1, // One per player + one management interface (patched in main() for two players)
.hid_params = {
[0] = {
.reportdesc = gcn64_usbHidReportDescriptor,
.reportdesc_len = sizeof(gcn64_usbHidReportDescriptor),
.getReport = _usbpad_hid_get_report,
.setReport = _usbpad_hid_set_report,
},
[1] = {
.reportdesc = dataHidReport,
.reportdesc_len = sizeof(dataHidReport),
.getReport = hiddata_get_report,
.setReport = hiddata_set_report,
},
[2] = {
.reportdesc = gcn64_usbHidReportDescriptor,
.reportdesc_len = sizeof(gcn64_usbHidReportDescriptor),
.getReport = _usbpad_hid_get_report,
.setReport = _usbpad_hid_set_report,
},
},
};
void hwinit(void)
{
/* PORTB
*
* 7: NC Output low
* 6: NC Output low
* 5: NC Output low
* 4: NC Output low
* 3: MISO Output low
* 2: MOSI Output low
* 1: SCK Output low
* 0: NC Output low
*/
PORTB = 0x00;
DDRB = 0xFF;
/* PORTC
*
* 7: NC Output low
* 6: NC Output low
* 5: NC Output low
* 4: NC Output low
* 3: (no such pin)
* 2: NC Output low
* 1: RESET (N/A: Reset input per fuses) (left floating)
* 0: XTAL2 (N/A: Crystal oscillator) (left floating)
*/
DDRC = 0xfc;
PORTC = 0x00;
/* PORTD
*
* 7: HWB Input (external pull-up)
* 6: NC Output low
* 5: NC Output low
* 4: NC Output low
* 3: IO3_MCU Input
* 2: IO2_MCU Input
* 1: IO1_MCU Input
* 0: IO0_MCU Input
*/
PORTD = 0x00;
DDRD = 0x70;
// System clock. External crystal is 16 Mhz and we want
// to run at max. speed.
CLKPR = 0x80;
CLKPR = 0x0; // Division factor of 1
PRR0 = 0;
PRR1 = 0;
}
unsigned char current_pad_type[NUM_CHANNELS] = { };
Gamepad *detectPad(unsigned char chn)
{
current_pad_type[chn] = gcn64_detectController(chn);
switch (current_pad_type[chn])
{
case CONTROLLER_IS_ABSENT:
case CONTROLLER_IS_UNKNOWN:
return NULL;
case CONTROLLER_IS_N64:
printf("Detected N64 controller\n");
return n64GetGamepad();
break;
case CONTROLLER_IS_GC:
printf("Detected GC controller\n");
return gamecubeGetGamepad();
}
return NULL;
}
/* Called after eeprom content is loaded. */
void eeprom_app_ready(void)
{
static wchar_t serial_from_eeprom[SERIAL_NUM_LEN+1];
int i;
for (i=0; i<SERIAL_NUM_LEN; i++) {
serial_from_eeprom[i] = g_eeprom_data.cfg.serial[i];
}
serial_from_eeprom[i] = 0;
g_usb_strings[USB_STRING_SERIAL_IDX] = serial_from_eeprom;
}
void pollDelay(void)
{
int i;
for (i=0; i<g_eeprom_data.cfg.poll_interval[0]; i++) {
_delay_ms(1);
}
}
static struct usbpad usbpads[MAX_PLAYERS];
static char g_polling_suspended = 0;
static void setSuspendPolling(uint8_t suspend)
{
g_polling_suspended = suspend;
}
static void forceVibration(uint8_t channel, uint8_t force)
{
if (channel < MAX_PLAYERS) {
usbpad_forceVibrate(&usbpads[channel], force);
}
}
static struct hiddata_ops hiddata_ops = {
.suspendPolling = setSuspendPolling,
.forceVibration = forceVibration,
};
#define STATE_WAIT_POLLTIME 0
#define STATE_POLL_PAD 1
#define STATE_WAIT_INTERRUPT_READY 2
#define STATE_TRANSMIT 3
#define STATE_WAIT_INTERRUPT_READY_P2 4
#define STATE_TRANSMIT_P2 5
int main(void)
{
Gamepad *pads[MAX_PLAYERS] = { };
gamepad_data pad_data;
unsigned char gamepad_vibrate = 0;
unsigned char state = STATE_WAIT_POLLTIME;
int error_count[MAX_PLAYERS] = { };
int i;
int channel;
int num_players = 1;
hwinit();
usart1_init();
eeprom_init();
intervaltimer_init();
switch (g_eeprom_data.cfg.mode)
{
default:
case CFG_MODE_STANDARD:
break;
case CFG_MODE_N64_ONLY:
usbstrings_changeProductString(L"N64 to USB v"VERSIONSTR_SHORT);
device_descriptor.idProduct = N64_USB_PID;
break;
case CFG_MODE_GC_ONLY:
usbstrings_changeProductString(L"Gamecube to USB v"VERSIONSTR_SHORT);
device_descriptor.idProduct = GC_USB_PID;
break;
case CFG_MODE_2P_STANDARD:
usbstrings_changeProductString(L"Dual GC/N64 to USB v"VERSIONSTR_SHORT);
device_descriptor.idProduct = DUAL_GCN64_USB_PID;
usb_params.configdesc = (PGM_VOID_P)&cfg0_2p;
usb_params.configdesc_ttllen = sizeof(cfg0_2p);
usb_params.n_hid_interfaces = 3;
num_players = 2;
break;
case CFG_MODE_2P_N64_ONLY:
usbstrings_changeProductString(L"Dual N64 to USB v"VERSIONSTR_SHORT);
device_descriptor.idProduct = DUAL_N64_USB_PID;
usb_params.configdesc = (PGM_VOID_P)&cfg0_2p;
usb_params.configdesc_ttllen = sizeof(cfg0_2p);
usb_params.n_hid_interfaces = 3;
num_players = 2;
break;
case CFG_MODE_2P_GC_ONLY:
usbstrings_changeProductString(L"Dual Gamecube to USB v"VERSIONSTR_SHORT);
device_descriptor.idProduct = DUAL_GC_USB_PID;
usb_params.configdesc = (PGM_VOID_P)&cfg0_2p;
usb_params.configdesc_ttllen = sizeof(cfg0_2p);
usb_params.n_hid_interfaces = 3;
num_players = 2;
break;
}
for (i=0; i<num_players; i++) {
int hid_iface_id;
usbpad_init(&usbpads[i]);
// Skip interface 1 (always used for the dataReport)
if (i>0) {
hid_iface_id = i + 1;
} else {
hid_iface_id = i;
}
usb_params.hid_params[hid_iface_id].ctx = &usbpads[i];
}
sei();
usb_init(&usb_params);
while (1)
{
static char last_v[MAX_PLAYERS] = { };
usb_doTasks();
hiddata_doTask(&hiddata_ops);
switch(state)
{
case STATE_WAIT_POLLTIME:
if (!g_polling_suspended) {
intervaltimer_set(g_eeprom_data.cfg.poll_interval[0]);
if (intervaltimer_get()) {
state = STATE_POLL_PAD;
}
}
break;
case STATE_POLL_PAD:
for (channel=0; channel<num_players; channel++)
{
/* Try to auto-detect controller if none*/
if (!pads[channel]) {
pads[channel] = detectPad(channel);
if (pads[channel] && (pads[channel]->hotplug)) {
// For gamecube, this make sure the next
// analog values we read become the center
// reference.
pads[channel]->hotplug(channel);
}
}
/* Read from the pad by calling update */
if (pads[channel]) {
if (pads[channel]->update(channel)) {
error_count[channel]++;
if (error_count[channel] > MAX_READ_ERRORS) {
pads[channel] = NULL;
error_count[channel] = 0;
continue;
}
} else {
error_count[channel]=0;
}
if (pads[channel]->changed(channel))
{
pads[channel]->getReport(channel, &pad_data);
usbpad_update(&usbpads[channel], &pad_data);
state = STATE_WAIT_INTERRUPT_READY;
continue;
}
} else {
/* Just make sure the gamepad state holds valid data
* to appear inactive (no buttons and axes in neutral) */
usbpad_update(&usbpads[channel], NULL);
}
}
/* If there were change on any of the gamepads, state will
* be set to STATE_WAIT_INTERRUPT_READY. Otherwise, go back
* to WAIT_POLLTIME. */
if (state == STATE_POLL_PAD) {
state = STATE_WAIT_POLLTIME;
}
break;
case STATE_WAIT_INTERRUPT_READY:
/* Wait until one of the interrupt endpoint is ready */
if (usb_interruptReady_ep1() || (num_players>1 && usb_interruptReady_ep3())) {
state = STATE_TRANSMIT;
}
break;
case STATE_TRANSMIT:
if (usb_interruptReady_ep1()) {
usb_interruptSend_ep1(usbpad_getReportBuffer(&usbpads[0]), usbpad_getReportSize());
}
if (num_players>1 && usb_interruptReady_ep3()) {
usb_interruptSend_ep3(usbpad_getReportBuffer(&usbpads[1]), usbpad_getReportSize());
}
state = STATE_WAIT_POLLTIME;
break;
}
for (channel=0; channel < num_players; channel++) {
gamepad_vibrate = usbpad_mustVibrate(&usbpads[channel]);
if (last_v[channel] != gamepad_vibrate) {
if (pads[channel] && pads[channel]->setVibration) {
pads[channel]->setVibration(channel, gamepad_vibrate);
}
last_v[channel] = gamepad_vibrate;
}
}
}
return 0;
}
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