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https://github.com/openmv/openmv.git
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232 lines
5.8 KiB
C
232 lines
5.8 KiB
C
/*
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* LWIP http webserver demo application
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*
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* Derived from CMSIS LWIP example projects.
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*
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* Author : Silesh C V <silesh@alifsemi.com>
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*
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* Copyright (C) 2022 ALIF SEMICONDUCTOR
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - Neither the name of ALIF SEMICONDUCTOR nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "RTE_Components.h"
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#include CMSIS_device_header
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#include "cmsis_os2.h"
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#include <stdio.h>
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#include <stdint.h>
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#include "ethernetif.h"
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#include "lwip/init.h"
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#include "lwip/netif.h"
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#include "lwip/timeouts.h"
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#include "lwip/apps/httpd.h"
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#include "netif/etharp.h"
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#include "lwip/dhcp.h"
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#include "pinconf.h"
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#if defined(RTE_Compiler_IO_STDOUT)
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#include "retarget_stdout.h"
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#endif /* RTE_Compiler_IO_STDOUT */
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static void net_init (void);
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static void net_periodic (uint32_t tick);
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static void net_timer (uint32_t *tick);
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static struct netif netif;
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#define HTTP_DEMO_DEBUG
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static int pin_mux_init(void)
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{
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int32_t ret;
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ret = pinconf_set(PORT_11, PIN_0, PINMUX_ALTERNATE_FUNCTION_6, PADCTRL_READ_ENABLE);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_1, PINMUX_ALTERNATE_FUNCTION_5, PADCTRL_READ_ENABLE);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_2, PINMUX_ALTERNATE_FUNCTION_6, 0);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_3, PINMUX_ALTERNATE_FUNCTION_6, PADCTRL_READ_ENABLE);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_4, PINMUX_ALTERNATE_FUNCTION_6, PADCTRL_READ_ENABLE);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_5, PINMUX_ALTERNATE_FUNCTION_6, PADCTRL_READ_ENABLE);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_6, PINMUX_ALTERNATE_FUNCTION_6, 0);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_11, PIN_7, PINMUX_ALTERNATE_FUNCTION_6, PADCTRL_READ_ENABLE);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_6, PIN_0, PINMUX_ALTERNATE_FUNCTION_6, 0);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_10, PIN_5, PINMUX_ALTERNATE_FUNCTION_6, 0);
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if (ret)
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return -1;
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ret = pinconf_set(PORT_10, PIN_6, PINMUX_ALTERNATE_FUNCTION_6, 0);
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if (ret)
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return -1;
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return 0;
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}
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/* Initialize lwIP */
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static void net_init (void)
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{
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ip4_addr_t ipaddr;
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ip4_addr_t netmask;
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ip4_addr_t gw;
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lwip_init ();
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#if LWIP_DHCP
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ipaddr.addr = IPADDR_ANY;
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netmask.addr = IPADDR_ANY;
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gw.addr = IPADDR_ANY;
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#else
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IP4_ADDR (&ipaddr, 192,168,1,11);
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IP4_ADDR (&netmask, 255,255,255,0);
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IP4_ADDR (&gw, 192,168,1,1);
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#endif
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/* Add the network interface to the netif_list. */
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netif_add(&netif, &ipaddr, &netmask, &gw, NULL, ðernetif_init, ðernet_input);
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/* Register the default network interface. */
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netif_set_default(&netif);
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netif_set_up(&netif);
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#if LWIP_DHCP
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dhcp_start (&netif);
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#endif
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}
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/* Link check */
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static void net_periodic (uint32_t tick)
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{
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static uint32_t old_tick;
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static ip4_addr_t ip = {0};
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if (tick == old_tick) {
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return;
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}
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old_tick = tick;
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ethernetif_check_link (&netif);
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#ifdef HTTP_DEMO_DEBUG
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if (netif_is_link_up(&netif)) {
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/* Print IP address if debug is enabled */
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if (ip.addr != netif.ip_addr.addr) {
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ip.addr = netif.ip_addr.addr;
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printf ("Link up. IP: %s.\n", ipaddr_ntoa(&ip));
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}
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}
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#endif
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}
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/* Tick timer callback */
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static void net_timer (uint32_t *tick) {
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++*tick;
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}
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/*----------------------------------------------------------------------------
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* Application main thread
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*---------------------------------------------------------------------------*/
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void app_main (void *argument)
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{
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static uint32_t tick;
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int32_t ret;
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osTimerId_t id;
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#if defined(RTE_Compiler_IO_STDOUT_User)
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ret = stdout_init();
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if (ret != 0)
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{
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while (1)
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{
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}
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}
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#endif
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ret = pin_mux_init ();
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if (ret < 0) {
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#ifdef HTTP_DEMO_DEBUG
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printf("pin mux initialization failed\n");
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#endif
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goto error;
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}
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/* Create tick timer, tick interval = 500ms */
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id = osTimerNew ((osTimerFunc_t)&net_timer, osTimerPeriodic, &tick, NULL);
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osTimerStart (id, 500);
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net_init ();
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httpd_init ();
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while (1) {
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/* check for packet reception */
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ethernetif_poll (&netif);
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/* handle system timers for lwIP */
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sys_check_timeouts ();
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net_periodic (tick);
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}
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error:
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while(1);
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}
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int main (void)
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{
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// System Initialization
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SystemCoreClockUpdate();
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osKernelInitialize(); // Initialize CMSIS-RTOS
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osThreadNew(app_main, NULL, NULL); // Create application main thread
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osKernelStart(); // Start thread execution
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for (;;) {}
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}
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