jyapayne/switch-pico
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Joey Yakimowich-Payne 2025-11-20 22:40:36 -07:00
commit de4c978a07
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7 changed files with 582 additions and 17 deletions
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24
switch-pico.cpp
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@ -1,4 +1,5 @@
#include <stdio.h>
#include <string.h>
#include "bsp/board.h"
#include "hardware/uart.h"
#include "pico/stdlib.h"
@ -13,9 +14,11 @@
// UART1 is reserved for external input frames from the host PC.
#define UART_ID uart1
#define BAUD_RATE 1000000
#define BAUD_RATE 900000
#define UART_TX_PIN 4
#define UART_RX_PIN 5
#define UART_RUMBLE_HEADER 0xBB
#define UART_RUMBLE_RUMBLE_TYPE 0x01
static bool g_last_mounted = false;
static bool g_last_ready = false;
@ -47,6 +50,24 @@ static SwitchInputState neutral_input() {
return state;
}
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);
uint8_t checksum = 0;
for (int i = 0; i < 10; ++i) {
checksum = static_cast<uint8_t>(checksum + frame[i]);
}
frame[10] = checksum;
uart_write_blocking(UART_ID, frame, sizeof(frame));
}
static void on_rumble_from_switch(const uint8_t rumble[8]) {
send_rumble_uart_frame(rumble);
}
// Consume UART bytes and forward complete frames to the Switch Pro driver.
static void poll_uart_frames() {
static uint8_t buffer[8];
@ -183,6 +204,7 @@ int main() {
tusb_init();
switch_pro_init();
switch_pro_set_rumble_callback(on_rumble_from_switch);
g_user_state = neutral_input();
switch_pro_set_input(g_user_state);