Leahnaya/mewdistro
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Back to Master mode, GB CPU is not fast enough.

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GrenderG 2024-02-10 12:53:25 +01:00
parent 7d75ae0b71
commit 9dd1834ab5
2 changed files with 40 additions and 27 deletions
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5
gen1.h
View File

@ -36,7 +36,10 @@
#define PKMN_BREAK_LINK ITEM_3_SELECTED
#define PKMN_TIME_CAPSULE_SELECT 0xD1
#define TRADE_CENTRE_WAIT 0xFD
#define TRADE_CENTRE_READY 0xFD
#define TRADE_CENTRE_WAIT 0xFE
#define LINK_CABLE_EMPTY 0x00
#define LINK_CABLE_DISCONNECT 0xFF
// Text definitions.

62
mewdistro.c
View File

@ -6,6 +6,7 @@
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "gen1.h"
@ -320,7 +321,7 @@ void fill_pokemon_team(void) {
trader_packet_to_bytes(&traderPacket, DATA_BLOCK);
}
uint8_t handle_byte(uint8_t in, size_t *counter) {
uint8_t handle_byte(uint8_t in, size_t *counter, clock_t *last_action) {
// Simple protocol explanation.
// Steps:
// First synchronization
@ -333,6 +334,22 @@ uint8_t handle_byte(uint8_t in, size_t *counter) {
// End
// Note: Gen 2 also has mail data at the end (Size: 381).
static uint8_t out;
// If the cable is disconnected or the console is not ready for more than 5 seconds, reset trading process.
// This method will only work if the distribution cartridge is acting as master.
clock_t current_time = clock();
if (connection_state != NOT_CONNECTED && (in == LINK_CABLE_EMPTY || in == LINK_CABLE_DISCONNECT)) {
if (current_time - (*last_action) > 300) {
connection_state = NOT_CONNECTED;
trade_state = INIT;
SC_REG = SIOF_CLOCK_INT;
out = PKMN_MASTER;
return out;
}
} else {
(*last_action) = current_time;
}
switch (connection_state) {
case NOT_CONNECTED:
switch (in) {
@ -376,10 +393,10 @@ uint8_t handle_byte(uint8_t in, size_t *counter) {
break;
case PKMN_MASTER:
// Reset connection; something went wrong in the last trade (console reset, etc) and we need to
// start again.
// start again. (Should only happen if distribution cart is in Slave mode).
connection_state = NOT_CONNECTED;
trade_state = INIT;
SC_REG = SIOF_CLOCK_INT;
SC_REG = SIOF_CLOCK_EXT;
out = PKMN_SLAVE;
break;
@ -390,52 +407,40 @@ uint8_t handle_byte(uint8_t in, size_t *counter) {
break;
case TRADE_CENTRE:
if (in == PKMN_MASTER && trade_state != DATA_TX_RANDOM && trade_state != DATA_TX) {
// Reset connection; something went wrong in the last trade (console reset, etc) and we need to
// start again.
// TODO: If the connection is reset in the middle of DATA_TX_RANDOM or DATA_TX it will get stuck so you
// need to reboot the distribution console.
connection_state = NOT_CONNECTED;
trade_state = INIT;
SC_REG = SIOF_CLOCK_INT;
out = PKMN_SLAVE;
break;
}
if (trade_state == INIT && in == 0x00) {
(*counter) = 0;
trade_state = READY;
out = 0x00;
} else if (trade_state == READY && in == 0xFD) {
} else if (trade_state == READY && in == TRADE_CENTRE_READY) {
trade_state = DETECTED;
out = 0xFD;
} else if (trade_state == DETECTED && in != 0xFD) {
} else if (trade_state == DETECTED && in != TRADE_CENTRE_READY) {
// Here random data seed is sent... Just ignore, we don't need it.
out = in;
trade_state = DATA_TX_RANDOM;
} else if (trade_state == DATA_TX_RANDOM && in == 0xFD) {
} else if (trade_state == DATA_TX_RANDOM && in == TRADE_CENTRE_READY) {
trade_state = DATA_TX_WAIT;
out = 0xFD;
} else if (trade_state == DATA_TX_WAIT && in == 0xFD) {
} else if (trade_state == DATA_TX_WAIT && in == TRADE_CENTRE_READY) {
out = 0x00;
} else if (trade_state == DATA_TX_WAIT && in != 0xFD) {
} else if (trade_state == DATA_TX_WAIT && in != TRADE_CENTRE_READY) {
(*counter) = 0;
// send first byte
out = DATA_BLOCK[(*counter)];
INPUT_BLOCK[(*counter)] = in;
//INPUT_BLOCK[(*counter)] = in;
trade_state = DATA_TX;
(*counter)++;
} else if (trade_state == DATA_TX) {
out = DATA_BLOCK[(*counter)];
INPUT_BLOCK[(*counter)] = in;
//INPUT_BLOCK[(*counter)] = in;
(*counter)++;
if ((*counter) == PARTY_DATA_SIZE) {
trade_state = DATA_TX_PATCH;
}
} else if (trade_state == DATA_TX_PATCH && in == 0xFD) {
} else if (trade_state == DATA_TX_PATCH && in == TRADE_CENTRE_READY) {
(*counter) = 0;
out = 0xFD;
} else if (trade_state == DATA_TX_PATCH && in != 0xFD) {
} else if (trade_state == DATA_TX_PATCH && in != TRADE_CENTRE_READY) {
// TODO: This is a hackfix, proper patch data handling is needed (0xFE bytes need to be replaced with
// 0xFF and their positions added to the patch lists). We are just sending emtpy lists for now.
@ -534,16 +539,21 @@ void main(void) {
disable_interrupts();
uint8_t in = 0xff;
size_t trade_counter = 0;
clock_t last_action = clock();
SC_REG = SIOF_CLOCK_INT;
uint8_t in = 0xff;
while (TRUE) {
if (scheduled_refill) {
fill_pokemon_team();
scheduled_refill = FALSE;
}
in = sio_exchange_slave(handle_byte(in, &trade_counter));
// Need to wait a bit before sending each byte. This is only needed if the distribution cartridge is acting as
// master.
delay(16);
in = sio_exchange_master(handle_byte(in, &trade_counter, &last_action));
}
}