// // 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 . // #include #include #include #include #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; static const soft_reg_field_t LED_REG_BLINKY_FIELD = {.num_bits=4, .shift=0}; //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 soft_reg_write(&g_led_register, LED_REG_BLINKY_FIELD, heart_beat); 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(); } //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; } }