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//
// Copyright 2014 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include <cron.h>
#include <wb_soft_reg.h>
#include <u3_net_stack.h>
#include <trace.h>
#include "n230_eth_handlers.h"
#include "n230_fw_defs.h"
#include "n230_fw_host_iface.h"
#include "n230_init.h"
//The version hash should come from a cmake build variable
//If it doesn't then the build system does not support the feature
//so just default to 0xFFFFFFFF
#ifndef UHD_VERSION_HASH
#define UHD_VERSION_HASH 0xFFFFFFFF
#endif
//TODO: This is just for initial debugging.
static soft_reg_t g_led_register;
//Shared memory
static n230_host_shared_mem_t g_host_shared_mem;
//Functions
static void n230_handle_claim();
/***********************************************************************
* Main loop runs all the handlers
**********************************************************************/
int main(void)
{
//Initialize host shared mem
g_host_shared_mem.data.fw_compat_num = N230_FW_COMPAT_NUM;
g_host_shared_mem.data.fw_version_hash = UHD_VERSION_HASH;
//Main initialization function
n230_init();
//Initialize UDP Handlers
n230_register_udp_fw_comms_handler(&g_host_shared_mem);
n230_register_udp_prog_framer();
n230_register_flash_comms_handler();
initialize_writeonly_soft_reg(&g_led_register, SR_ADDR(WB_SBRB_BASE, SR_ZPU_LEDS));
uint32_t heart_beat = 0;
while(true)
{
//TODO: This is just for initial debugging. Once the firmware
//is somewhat stable we should delete this cron job
if (cron_job_run_due(PER_SECOND_CRON_JOBID)) {
//Everything in this block runs approx once per second
if (heart_beat % 10 == 0) {
UHD_FW_TRACE_FSTR(INFO, "0.1Hz Heartbeat (%u)", heart_beat);
}
heart_beat++;
}
if (cron_job_run_due(PER_MILLISEC_CRON_JOBID)) {
//Everything in this block runs approx once per millisecond
n230_handle_claim();
n230_handle_sfp_updates(&g_led_register);
}
//run the network stack - poll and handle
u3_net_stack_handle_one();
}
return 0;
}
// Watchdog timer for claimer
static void n230_handle_claim()
{
static uint32_t last_time = 0;
static size_t timeout = 0;
if (g_host_shared_mem.data.claim_time == 0) {
//If time is 0 if the claim was forfeit
g_host_shared_mem.data.claim_status = 0;
} else if (last_time != g_host_shared_mem.data.claim_time) {
//If the time changes, reset timeout
g_host_shared_mem.data.claim_status = 1;
timeout = 0;
} else {
//Otherwise increment for timeout
timeout++;
}
//Always stash the last seen time
last_time = g_host_shared_mem.data.claim_time;
//Timeout logic
if (timeout > N230_CLAIMER_TIMEOUT_IN_MS) {
g_host_shared_mem.data.claim_time = 0;
}
}
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