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Add stock-USB native Joy-Con R/L hub bridge

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This commit is contained in:
Joey Yakimowich-Payne 2026-09-12 15:28:58 -06:00
commit 1748910316
41 changed files with 7101 additions and 909 deletions
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62
tools/pico_usb_address_probe/main.c Normal file
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#include <inttypes.h>
#include <stdio.h>
#include "hardware/clocks.h"
#include "hardware/structs/sio.h"
#include "hardware/structs/usb.h"
#include "hardware/vreg.h"
#include "hardware/watchdog.h"
#include "pico/multicore.h"
#include "pico/stdlib.h"
#include "router.h"
#include "usb_probe.h"
#if !PICO_NO_FLASH
#error "The native USB address probe must run from RAM, never replace flash firmware"
#endif
#if !PICO_RP2350
#error "The native USB address probe requires RP2350"
#endif
int main(void) {
// A failed USB experiment must not strand the board in this RAM program.
// Explicit host GET_STATS requests are the only keepalive after startup.
watchdog_enable(8000, false);
vreg_set_voltage(VREG_VOLTAGE_1_30);
sleep_ms(10);
set_sys_clock_khz(240000, true);
stdio_init_all();
printf("\n[HUBPROBE] RAM-only built-in USB address experiment, clock=%" PRIu32 " Hz\n",
clock_get_hz(clk_sys));
printf("[HUBPROBE] No GPIO data wiring, Bluetooth, or flash writes; watchdog returns to stored firmware\n");
probe_router_init(clock_get_hz(clk_sys));
multicore_launch_core1(probe_router_core1);
const uint32_t start = time_us_32();
probe_router_stats observer = {0};
do {
probe_router_snapshot(&observer);
if (observer.ready) break;
sleep_us(10);
} while ((uint32_t)(time_us_32() - start) < 100000);
printf("[HUBPROBE] Observer ready=%" PRIu32 " cycles/bit=%" PRIu32 "\n",
observer.ready, observer.cycles_per_bit);
probe_hub_init();
#if PROBE_USB_GPIO_MODE
// With TO_PHY retained and SIO outputs disabled, hardware measurements
// showed both live SIO inputs and successful native-controller enumeration.
// Keep only the internal full-speed attachment resistor; do not drive data.
sio_hw->gpio_hi_oe_clr = SIO_GPIO_HI_IN_USB_DP_BITS | SIO_GPIO_HI_IN_USB_DM_BITS;
hw_set_bits(&usb_hw->phy_direct, USB_USBPHY_DIRECT_DP_PULLUP_EN_BITS);
hw_set_bits(&usb_hw->phy_direct_override,
USB_USBPHY_DIRECT_OVERRIDE_DP_PULLUP_EN_OVERRIDE_EN_BITS);
hw_set_bits(&usb_hw->muxing, USB_USB_MUXING_USBPHY_AS_GPIO_BITS);
printf("[HUBPROBE] USBPHY_AS_GPIO plus TO_PHY; SIO outputs disabled, internal pull-up retained\n");
#endif
printf("[HUBPROBE] RX=SIO GPIO_HI_IN[25:24], mux=%08" PRIx32 "; SIO=%08" PRIx32
" PHY=%08" PRIx32 "\n", usb_hw->muxing, sio_hw->gpio_hi_in, usb_hw->phy_direct);
while (true) {
probe_hub_task();
sleep_us(100);
}
}