diff options
Diffstat (limited to 'tinyusb/examples/device/net_lwip_webserver/src/main.c')
| -rwxr-xr-x | tinyusb/examples/device/net_lwip_webserver/src/main.c | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/tinyusb/examples/device/net_lwip_webserver/src/main.c b/tinyusb/examples/device/net_lwip_webserver/src/main.c deleted file mode 100755 index 80831921..00000000 --- a/tinyusb/examples/device/net_lwip_webserver/src/main.c +++ /dev/null @@ -1,247 +0,0 @@ -/* - * The MIT License (MIT) - * - * Copyright (c) 2020 Peter Lawrence - * - * influenced by lrndis https://github.com/fetisov/lrndis - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - */ - -/* -this appears as either a RNDIS or CDC-ECM USB virtual network adapter; the OS picks its preference - -RNDIS should be valid on Linux and Windows hosts, and CDC-ECM should be valid on Linux and macOS hosts - -The MCU appears to the host as IP address 192.168.7.1, and provides a DHCP server, DNS server, and web server. -*/ -/* -Some smartphones *may* work with this implementation as well, but likely have limited (broken) drivers, -and likely their manufacturer has not tested such functionality. Some code workarounds could be tried: - -The smartphone may only have an ECM driver, but refuse to automatically pick ECM (unlike the OSes above); -try modifying ./examples/devices/net_lwip_webserver/usb_descriptors.c so that CONFIG_ID_ECM is default. - -The smartphone may be artificially picky about which Ethernet MAC address to recognize; if this happens, -try changing the first byte of tud_network_mac_address[] below from 0x02 to 0x00 (clearing bit 1). -*/ - -#include "bsp/board.h" -#include "tusb.h" - -#include "dhserver.h" -#include "dnserver.h" -#include "lwip/init.h" -#include "lwip/timeouts.h" -#include "httpd.h" - -/* lwip context */ -static struct netif netif_data; - -/* shared between tud_network_recv_cb() and service_traffic() */ -static struct pbuf *received_frame; - -/* this is used by this code, ./class/net/net_driver.c, and usb_descriptors.c */ -/* ideally speaking, this should be generated from the hardware's unique ID (if available) */ -/* it is suggested that the first byte is 0x02 to indicate a link-local address */ -const uint8_t tud_network_mac_address[6] = {0x02,0x02,0x84,0x6A,0x96,0x00}; - -/* network parameters of this MCU */ -static const ip_addr_t ipaddr = IPADDR4_INIT_BYTES(192, 168, 7, 1); -static const ip_addr_t netmask = IPADDR4_INIT_BYTES(255, 255, 255, 0); -static const ip_addr_t gateway = IPADDR4_INIT_BYTES(0, 0, 0, 0); - -/* database IP addresses that can be offered to the host; this must be in RAM to store assigned MAC addresses */ -static dhcp_entry_t entries[] = -{ - /* mac ip address lease time */ - { {0}, IPADDR4_INIT_BYTES(192, 168, 7, 2), 24 * 60 * 60 }, - { {0}, IPADDR4_INIT_BYTES(192, 168, 7, 3), 24 * 60 * 60 }, - { {0}, IPADDR4_INIT_BYTES(192, 168, 7, 4), 24 * 60 * 60 }, -}; - -static const dhcp_config_t dhcp_config = -{ - .router = IPADDR4_INIT_BYTES(0, 0, 0, 0), /* router address (if any) */ - .port = 67, /* listen port */ - .dns = IPADDR4_INIT_BYTES(192, 168, 7, 1), /* dns server (if any) */ - "usb", /* dns suffix */ - TU_ARRAY_SIZE(entries), /* num entry */ - entries /* entries */ -}; -static err_t linkoutput_fn(struct netif *netif, struct pbuf *p) -{ - (void)netif; - - for (;;) - { - /* if TinyUSB isn't ready, we must signal back to lwip that there is nothing we can do */ - if (!tud_ready()) - return ERR_USE; - - /* if the network driver can accept another packet, we make it happen */ - if (tud_network_can_xmit()) - { - tud_network_xmit(p, 0 /* unused for this example */); - return ERR_OK; - } - - /* transfer execution to TinyUSB in the hopes that it will finish transmitting the prior packet */ - tud_task(); - } -} - -static err_t output_fn(struct netif *netif, struct pbuf *p, const ip_addr_t *addr) -{ - return etharp_output(netif, p, addr); -} - -static err_t netif_init_cb(struct netif *netif) -{ - LWIP_ASSERT("netif != NULL", (netif != NULL)); - netif->mtu = CFG_TUD_NET_MTU; - netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP | NETIF_FLAG_UP; - netif->state = NULL; - netif->name[0] = 'E'; - netif->name[1] = 'X'; - netif->linkoutput = linkoutput_fn; - netif->output = output_fn; - return ERR_OK; -} - -static void init_lwip(void) -{ - struct netif *netif = &netif_data; - - lwip_init(); - - /* the lwip virtual MAC address must be different from the host's; to ensure this, we toggle the LSbit */ - netif->hwaddr_len = sizeof(tud_network_mac_address); - memcpy(netif->hwaddr, tud_network_mac_address, sizeof(tud_network_mac_address)); - netif->hwaddr[5] ^= 0x01; - - netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, netif_init_cb, ip_input); - netif_set_default(netif); -} - -/* handle any DNS requests from dns-server */ -bool dns_query_proc(const char *name, ip_addr_t *addr) -{ - if (0 == strcmp(name, "tiny.usb")) - { - *addr = ipaddr; - return true; - } - return false; -} - -bool tud_network_recv_cb(const uint8_t *src, uint16_t size) -{ - /* this shouldn't happen, but if we get another packet before - parsing the previous, we must signal our inability to accept it */ - if (received_frame) return false; - - if (size) - { - struct pbuf *p = pbuf_alloc(PBUF_RAW, size, PBUF_POOL); - - if (p) - { - /* pbuf_alloc() has already initialized struct; all we need to do is copy the data */ - memcpy(p->payload, src, size); - - /* store away the pointer for service_traffic() to later handle */ - received_frame = p; - } - } - - return true; -} - -uint16_t tud_network_xmit_cb(uint8_t *dst, void *ref, uint16_t arg) -{ - struct pbuf *p = (struct pbuf *)ref; - - (void)arg; /* unused for this example */ - - return pbuf_copy_partial(p, dst, p->tot_len, 0); -} - -static void service_traffic(void) -{ - /* handle any packet received by tud_network_recv_cb() */ - if (received_frame) - { - ethernet_input(received_frame, &netif_data); - pbuf_free(received_frame); - received_frame = NULL; - tud_network_recv_renew(); - } - - sys_check_timeouts(); -} - -void tud_network_init_cb(void) -{ - /* if the network is re-initializing and we have a leftover packet, we must do a cleanup */ - if (received_frame) - { - pbuf_free(received_frame); - received_frame = NULL; - } -} - -int main(void) -{ - /* initialize TinyUSB */ - board_init(); - tusb_init(); - - /* initialize lwip, dhcp-server, dns-server, and http */ - init_lwip(); - while (!netif_is_up(&netif_data)); - while (dhserv_init(&dhcp_config) != ERR_OK); - while (dnserv_init(&ipaddr, 53, dns_query_proc) != ERR_OK); - httpd_init(); - - while (1) - { - tud_task(); - service_traffic(); - } - - return 0; -} - -/* lwip has provision for using a mutex, when applicable */ -sys_prot_t sys_arch_protect(void) -{ - return 0; -} -void sys_arch_unprotect(sys_prot_t pval) -{ - (void)pval; -} - -/* lwip needs a millisecond time source, and the TinyUSB board support code has one available */ -uint32_t sys_now(void) -{ - return board_millis(); -} |