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#include <FreeRTOS.h>
#include <task.h>
#include <stdio.h>
#include <stddef.h>
#include <stdint.h>
#include <pico/stdlib.h>
#include <hardware/i2c.h>
#include "i2c.h"
#include "pb-mod.h"
#include "pbdrv.h"
#include "config.h"
#include "pb-buf.h"
#include "pb-send.h"
i2c_addr_t modules[CFG_PB_MOD_MAX];
size_t modules_size = 0;
static void state_exchange() {
for (size_t i = 0; i < modules_size; i++) {
pb_buf_t buf = pb_send_state_req();
pb_buf_free(&buf);
}
}
void bus_task() {
// do a scan of the bus
bus_scan();
// FIXME: this should be removed (see handover: RP2040 I2C limitations)
// wait for 5 seconds until all handshake responses are received
pb_mod_blocking_delay_ms(5e3);
while(1) {
// send my state to all puzzle modules
state_exchange();
// wait 1 second
pb_mod_blocking_delay_ms(1e3);
}
}
/**
* \ingroup main_pb_override
* \anchor main_route_cmd_magic_res
*
* This function registers the I2C address of the puzzle module that replied to
* the \c MAGIC \c REQ command into a list of "known puzzle modules", which are
* then periodically updated during gameplay.
*
* \note Up to \ref CFG_PB_MOD_MAX puzzle modules can be registered
* simultaniously.
*/
void pb_route_cmd_magic_res(pb_msg_t * msg) {
if (modules_size == CFG_PB_MOD_MAX) return;
modules[modules_size++] = msg->sender;
printf("i2c: registered puzzle module w/ address 0x%02x\n", msg->sender);
}
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