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Prototype adapter XInput feasibility

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This commit is contained in:
Joey Yakimowich-Payne 2026-09-02 07:53:18 -06:00
commit 17b3d7399c
13 changed files with 953 additions and 13 deletions
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74
switch_pro_driver.cpp
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@ -8,6 +8,10 @@
#include "pico/rand.h"
#include "pico/time.h"
#include "tusb.h"
#ifdef SWITCH_PICO_ADAPTER_FEASIBILITY
#include "adapter_host_probe.h"
#include "xinput_feasibility_descriptors.h"
#endif
#ifdef SWITCH_PICO_LOG
#define LOG_PRINTF(...) printf(__VA_ARGS__)
@ -1082,11 +1086,21 @@ uint8_t const* tud_hid_descriptor_report_cb(uint8_t instance) {
}
uint8_t const* tud_descriptor_device_cb(void) {
#ifdef SWITCH_PICO_ADAPTER_FEASIBILITY
if (adapter_host_probe_mode() == AdapterUsbMode::kXInput) {
return XInputFeasibility::kDeviceDescriptor;
}
#endif
return switch_pro_device_descriptor;
}
uint8_t const* tud_descriptor_configuration_cb(uint8_t index) {
(void)index;
#ifdef SWITCH_PICO_ADAPTER_FEASIBILITY
if (adapter_host_probe_mode() == AdapterUsbMode::kXInput) {
return XInputFeasibility::kConfigurationDescriptor;
}
#endif
return switch_pro_configuration_descriptor;
}
@ -1114,28 +1128,62 @@ void tud_umount_cb(void) {
static uint16_t desc_str[32];
uint16_t const * tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
(void)langid;
uint8_t chr_count;
#ifdef SWITCH_PICO_ADAPTER_FEASIBILITY
adapter_host_probe_note_string_descriptor(index);
if (index == 0xee) {
static constexpr char kSignature[] = "MSFT100";
for (uint8_t i = 0; i < sizeof(kSignature) - 1; ++i) {
desc_str[1 + i] = kSignature[i];
}
desc_str[8] = XInputFeasibility::kMsVendorRequest;
desc_str[0] = static_cast<uint16_t>((0x03 << 8) | 18);
return desc_str;
}
#endif
if ( index == 0 ) {
uint8_t chr_count = 0;
if (index == 0) {
memcpy(&desc_str[1], switch_pro_string_language, 2);
chr_count = 1;
} else {
if ( index >= sizeof(switch_pro_string_descriptors)/sizeof(switch_pro_string_descriptors[0]) ) return nullptr;
const uint8_t* str = nullptr;
#ifdef SWITCH_PICO_ADAPTER_FEASIBILITY
static const uint8_t kManufacturer[] = "Switch Pico";
static const uint8_t kProduct[] = "XInput Feasibility";
static const uint8_t kSerial[] = "XINPUT-PROTOTYPE";
static const uint8_t* const kXInputStrings[] = {
nullptr, kManufacturer, kProduct, kSerial};
if (adapter_host_probe_mode() == AdapterUsbMode::kXInput) {
if (index >= sizeof(kXInputStrings) /
sizeof(kXInputStrings[0])) {
return nullptr;
}
str = kXInputStrings[index];
} else
#endif
{
if (index >= sizeof(switch_pro_string_descriptors) /
sizeof(switch_pro_string_descriptors[0])) {
return nullptr;
}
str = switch_pro_string_descriptors[index];
}
const uint8_t *str = switch_pro_string_descriptors[index];
chr_count = 0;
while ( str[chr_count] ) chr_count++;
if ( chr_count > 31 ) chr_count = 31;
for(uint8_t i=0; i<chr_count; i++) {
desc_str[1+i] = str[i];
while (str[chr_count] != 0) {
++chr_count;
}
if (chr_count > 31) {
chr_count = 31;
}
for (uint8_t i = 0; i < chr_count; ++i) {
desc_str[1 + i] = str[i];
}
}
desc_str[0] = (uint16_t) ((0x03 << 8 ) | (2*chr_count + 2));
desc_str[0] =
static_cast<uint16_t>((0x03 << 8) | (2 * chr_count + 2));
return desc_str;
}