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| Original file line number | Diff line number | Diff line change |
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| #include "py/runtime.h" | ||
| #include "py/mphal.h" | ||
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| #if MICROPY_HW_USB_NET | ||
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| #include "tusb.h" | ||
| // #include "lwip/ethip6.h" | ||
| // #include "lwip/init.h" | ||
| // #include "lwip/timeouts.h" | ||
| #include "shared/netutils/netutils.h" | ||
| #include "extmod/modnetwork.h" | ||
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| #include "lwip/etharp.h" | ||
| #include "lwip/dns.h" | ||
| #include "lwip/dhcp.h" | ||
| #include "netif/ethernet.h" | ||
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| // typedef struct _eth_t { | ||
| // uint32_t trace_flags; | ||
| // struct netif netif_data; | ||
| // struct dhcp dhcp_struct; | ||
| // } eth_t; | ||
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| #define INIT_IP4(a, b, c, d) \ | ||
| { PP_HTONL(LWIP_MAKEU32(a, b, c, d)) } | ||
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| /* lwip context */ | ||
| static struct netif netif_data; | ||
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| /* shared between tud_network_recv_cb() and service_traffic() */ | ||
| static struct pbuf *received_frame; | ||
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| /* 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 */ | ||
| uint8_t tud_network_mac_address[6] = {0x02, 0x02, 0x84, 0x6A, 0x96, 0x00}; | ||
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| static err_t linkoutput_fn(struct netif *netif, struct pbuf *p) { | ||
| (void) netif; | ||
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| 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; | ||
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| /* if the network driver can accept another packet, we make it happen */ | ||
| if (tud_network_can_xmit(p->tot_len)) { | ||
| tud_network_xmit(p, 0 /* unused for this example */); | ||
| return ERR_OK; | ||
| } | ||
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| /* transfer execution to TinyUSB in the hopes that it will finish transmitting the prior packet */ | ||
| tud_task(); | ||
| } | ||
| } | ||
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| static err_t ip4_output_fn(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr) { | ||
| return etharp_output(netif, p, addr); | ||
| } | ||
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| #if LWIP_IPV6 | ||
| static err_t ip6_output_fn(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr) { | ||
| return ethip6_output(netif, p, addr); | ||
| } | ||
| #endif | ||
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| 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_NETARP | NETIF_FLAG_LINK_UP | NETIF_FLAG_UP; | ||
| netif->state = NULL; | ||
| netif->name[0] = 'E'; | ||
| netif->name[1] = 'X'; | ||
| netif->linkoutput = linkoutput_fn; | ||
| netif->output = ip4_output_fn; | ||
| #if LWIP_IPV6 | ||
| netif->output_ip6 = ip6_output_fn; | ||
| #endif | ||
| return ERR_OK; | ||
| } | ||
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| 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; | ||
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| if (size) { | ||
| struct pbuf *p = pbuf_alloc(PBUF_RAW, size, PBUF_POOL); | ||
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| if (p) { | ||
| /* pbuf_alloc() has already initialized struct; all we need to do is copy the data */ | ||
| memcpy(p->payload, src, size); | ||
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| /* store away the pointer for service_traffic() to later handle */ | ||
| received_frame = p; | ||
| } | ||
| } | ||
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| return true; | ||
| } | ||
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| uint16_t tud_network_xmit_cb(uint8_t *dst, void *ref, uint16_t arg) { | ||
| struct pbuf *p = (struct pbuf *) ref; | ||
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| (void) arg; /* unused for this example */ | ||
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| return pbuf_copy_partial(p, dst, p->tot_len, 0); | ||
| } | ||
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| 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(); | ||
| } | ||
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| sys_check_timeouts(); | ||
| } | ||
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| 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; | ||
| } | ||
| } | ||
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| void mp_usbd_net_init(void) { | ||
| MICROPY_PY_LWIP_ENTER | ||
| netif->hwaddr_len = sizeof(tud_network_mac_address); | ||
| memcpy(netif->hwaddr, tud_network_mac_address, sizeof(tud_network_mac_address)); | ||
| netif->hwaddr[5] ^= 0x01; | ||
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| netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, netif_init_cb, ip_input); | ||
| #if LWIP_IPV6 | ||
| netif_create_ip6_linklocal_address(netif, 1); | ||
| #endif | ||
| netif_set_default(netif); | ||
| MICROPY_PY_LWIP_EXIT | ||
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| } | ||
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| #endif |
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