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Add stateful HD-rumble decoder with TinyUSB report normalization

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Decode Nintendo HD-rumble words once in firmware into conventional low/high magnitudes and normalize stripped control SET_REPORT vs complete interrupt OUT reports through one path.
This commit is contained in:
Joey Yakimowich-Payne 2026-08-29 22:12:24 -06:00
commit bce94d38ce
21 changed files with 902 additions and 180 deletions
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24
switch-pico.cpp
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@ -1,5 +1,4 @@
#include <stdio.h>
#include <string.h>
#include "bsp/board.h"
#include "pico/stdlib.h"
#include "tusb.h"
@ -23,7 +22,7 @@
#define UART_TX_PIN 4
#define UART_RX_PIN 5
#define UART_RUMBLE_HEADER 0xBB
#define UART_RUMBLE_RUMBLE_TYPE 0x01
#define UART_RUMBLE_TYPE 0x02
#endif
static bool g_last_mounted = false;
@ -51,22 +50,23 @@ static SwitchInputState neutral_input() {
}
#ifndef SWITCH_PICO_BLUEPAD32
static void send_rumble_uart_frame(const uint8_t rumble[8]) {
uint8_t frame[11];
frame[0] = UART_RUMBLE_HEADER;
frame[1] = UART_RUMBLE_RUMBLE_TYPE;
memcpy(&frame[2], rumble, 8);
static void send_rumble_uart_frame(const SwitchRumbleOutput& rumble) {
uint8_t frame[5] = {
UART_RUMBLE_HEADER,
UART_RUMBLE_TYPE,
rumble.low_frequency_magnitude,
rumble.high_frequency_magnitude,
0,
};
uint8_t checksum = 0;
for (int i = 0; i < 10; ++i) {
checksum = static_cast<uint8_t>(checksum + frame[i]);
for (uint8_t i = 0; i < 4; ++i) {
frame[4] = static_cast<uint8_t>(frame[4] + frame[i]);
}
frame[10] = checksum;
uart_write_blocking(UART_ID, frame, sizeof(frame));
}
#endif
static void on_rumble_from_switch(const uint8_t rumble[8]) {
static void on_rumble_from_switch(const SwitchRumbleOutput& rumble) {
#ifdef SWITCH_PICO_BLUEPAD32
bluepad32_input_backend_queue_rumble(rumble);
#else