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circuitpython/extmod/network_wiznet5k.c
Jim Mussared 5f8f32f917 extmod/modnetwork: Use a type protocol to implement NIC functions. 
This was previously implemented by adding additional members to the
mp_obj_type_t defined for each NIC, which is difficult to do cleanly with
the new object type slots mechanism. The way this works is also not
supported on GCC 8.x and below.

Instead replace it with the type protocol, which is a much simpler way of
achieving the same thing.

This affects the WizNet (in non-LWIP mode) and Nina NIC drivers.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2022-12-15 17:40:06 +11:00

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Damien P. George
*
* 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.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include "py/runtime.h"
#include "py/stream.h"
#include "py/mperrno.h"
#include "py/mphal.h"
#if MICROPY_PY_NETWORK_WIZNET5K
#include "shared/netutils/netutils.h"
#include "extmod/modnetwork.h"
#include "extmod/machine_spi.h"
#include "extmod/virtpin.h"
#include "modmachine.h"
#include "drivers/bus/spi.h"
#include "lib/wiznet5k/Ethernet/wizchip_conf.h"
// The WIZNET5K module supports two usage modes:
// * Raw ethernet transport with LwIP integrated in micropython
// * Provided TCP Stack on controller presented as modnetwork / socket interface
#define WIZNET5K_WITH_LWIP_STACK (MICROPY_PY_LWIP)
#define WIZNET5K_PROVIDED_STACK (!MICROPY_PY_LWIP)
#if WIZNET5K_WITH_LWIP_STACK
// Uses LwIP for TCP Stack with Wiznet in MACRAW mode
#include "shared/netutils/netutils.h"
#include "lib/wiznet5k/Ethernet/wizchip_conf.h"
#include "lib/wiznet5k/Ethernet/socket.h"
#include "lwip/err.h"
#include "lwip/dns.h"
#include "lwip/dhcp.h"
#include "netif/etharp.h"
#define TRACE_ETH_TX (0x0002)
#define TRACE_ETH_RX (0x0004)
#else // WIZNET5K_PROVIDED_STACK
// Uses TCP Stack provided in Wiznet controller
// TODO: Not all micropython modnetwork / socket features are provided
#include "lib/wiznet5k/Ethernet/socket.h"
#include "lib/wiznet5k/Internet/DNS/dns.h"
#include "lib/wiznet5k/Internet/DHCP/dhcp.h"
#endif
#ifndef printf
#define printf(...) mp_printf(MP_PYTHON_PRINTER, __VA_ARGS__)
#endif
#ifndef MICROPY_HW_WIZNET_SPI_BAUDRATE
#define MICROPY_HW_WIZNET_SPI_BAUDRATE (2000000)
#endif
#ifndef WIZCHIP_SREG_ADDR
#if (_WIZCHIP_ == 5500)
#define WIZCHIP_SREG_ADDR(sn, addr) (_W5500_IO_BASE_ + (addr << 8) + (WIZCHIP_SREG_BLOCK(sn) << 3))
#else
#define WIZCHIP_SREG_ADDR(sn, addr) (_WIZCHIP_IO_BASE_ + WIZCHIP_SREG_BLOCK(sn) + (addr))
#endif
#endif
typedef struct _wiznet5k_obj_t {
mp_obj_base_t base;
mp_uint_t cris_state;
mp_obj_base_t *spi;
void (*spi_transfer)(mp_obj_base_t *obj, size_t len, const uint8_t *src, uint8_t *dest);
mp_hal_pin_obj_t cs;
mp_hal_pin_obj_t rst;
#if WIZNET5K_WITH_LWIP_STACK
mp_hal_pin_obj_t pin_intn;
bool use_interrupt;
uint8_t eth_frame[1514];
uint32_t trace_flags;
struct netif netif;
struct dhcp dhcp_struct;
#else // WIZNET5K_PROVIDED_STACK
wiz_NetInfo netinfo;
uint8_t socket_used;
bool active;
#endif
} wiznet5k_obj_t;
#if WIZNET5K_WITH_LWIP_STACK
#define IS_ACTIVE(self) (self->netif.flags & NETIF_FLAG_UP)
#else // WIZNET5K_PROVIDED_STACK
#define IS_ACTIVE(self) (self->active)
#endif
// Global object holding the Wiznet5k state
STATIC wiznet5k_obj_t wiznet5k_obj;
STATIC void wiz_cris_enter(void) {
wiznet5k_obj.cris_state = MICROPY_BEGIN_ATOMIC_SECTION();
}
STATIC void wiz_cris_exit(void) {
MICROPY_END_ATOMIC_SECTION(wiznet5k_obj.cris_state);
}
STATIC void wiz_cs_select(void) {
mp_hal_pin_low(wiznet5k_obj.cs);
}
STATIC void wiz_cs_deselect(void) {
mp_hal_pin_high(wiznet5k_obj.cs);
}
void mpy_wiznet_yield(void) {
// Used in socket.c via -DWIZCHIP_YIELD=mpy_wiznet_yield in make/cmake
#if MICROPY_PY_THREAD
MICROPY_THREAD_YIELD();
#else
mp_handle_pending(true);
#endif
}
STATIC void wiz_spi_read(uint8_t *buf, uint16_t len) {
wiznet5k_obj.spi_transfer(wiznet5k_obj.spi, len, buf, buf);
}
STATIC void wiz_spi_write(const uint8_t *buf, uint16_t len) {
wiznet5k_obj.spi_transfer(wiznet5k_obj.spi, len, buf, NULL);
}
STATIC uint8_t wiz_spi_readbyte() {
uint8_t buf = 0;
wiznet5k_obj.spi_transfer(wiznet5k_obj.spi, 1, &buf, &buf);
return buf;
}
STATIC void wiz_spi_writebyte(const uint8_t buf) {
wiznet5k_obj.spi_transfer(wiznet5k_obj.spi, 1, &buf, NULL);
}
STATIC void wiznet5k_get_mac_address(wiznet5k_obj_t *self, uint8_t mac[6]) {
(void)self;
getSHAR(mac);
}
#if WIZNET5K_WITH_LWIP_STACK
void wiznet5k_try_poll(void);
STATIC void wiznet5k_lwip_init(wiznet5k_obj_t *self);
STATIC mp_obj_t mpy_wiznet_read_int(mp_obj_t none_in) {
(void)none_in;
// Handle incoming data, unless the SPI bus is busy
if (mp_hal_pin_read(wiznet5k_obj.cs)) {
wiznet5k_try_poll();
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mpy_wiznet_read_int_obj, mpy_wiznet_read_int);
STATIC void wiznet5k_config_interrupt(bool enabled) {
if (!wiznet5k_obj.use_interrupt) {
return;
}
mp_hal_pin_interrupt(
wiznet5k_obj.pin_intn,
MP_OBJ_FROM_PTR(&mpy_wiznet_read_int_obj),
(enabled)? MP_HAL_PIN_TRIGGER_FALL : MP_HAL_PIN_TRIGGER_NONE,
true
);
}
void wiznet5k_deinit(void) {
for (struct netif *netif = netif_list; netif != NULL; netif = netif->next) {
if (netif == &wiznet5k_obj.netif) {
netif_remove(netif);
netif->flags = 0;
break;
}
}
}
STATIC void wiznet5k_init(void) {
// Configure wiznet for raw ethernet frame usage.
// Configure 16k buffers for fast MACRAW
uint8_t sn_size[16] = {16, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0};
ctlwizchip(CW_INIT_WIZCHIP, sn_size);
if (wiznet5k_obj.use_interrupt) {
// Enable Wiznet interrupts for socket 0
wizchip_setinterruptmask(IK_SOCK_0);
// Enable data receive interrupt
setSn_IMR(0, Sn_IR_RECV);
#if _WIZCHIP_ == W5100S
// Enable interrupt pin
setMR(MR2_G_IEN);
#endif
mp_hal_pin_input(wiznet5k_obj.pin_intn);
wiznet5k_config_interrupt(true);
}
// Deinit before a new init to clear the state from a previous activation
wiznet5k_deinit();
// Hook the Wiznet into lwIP
wiznet5k_lwip_init(&wiznet5k_obj);
netif_set_link_up(&wiznet5k_obj.netif);
netif_set_up(&wiznet5k_obj.netif);
// register with network module
mod_network_register_nic(&wiznet5k_obj);
}
STATIC void wiznet5k_send_ethernet(wiznet5k_obj_t *self, size_t len, const uint8_t *buf) {
uint8_t ip[4] = {1, 1, 1, 1}; // dummy
int ret = WIZCHIP_EXPORT(sendto)(0, (byte *)buf, len, ip, 11); // dummy port
if (ret != len) {
printf("wiznet5k_send_ethernet: fatal error %d\n", ret);
netif_set_link_down(&self->netif);
netif_set_down(&self->netif);
}
}
// Stores the frame in self->eth_frame and returns number of bytes in the frame, 0 for no frame
STATIC uint16_t wiznet5k_recv_ethernet(wiznet5k_obj_t *self) {
uint16_t len = getSn_RX_RSR(0);
if (len == 0) {
return 0;
}
byte ip[4];
uint16_t port;
int ret = WIZCHIP_EXPORT(recvfrom)(0, self->eth_frame, 1514, ip, &port);
if (ret <= 0) {
printf("wiznet5k_recv_ethernet: fatal error len=%u ret=%d\n", len, ret);
netif_set_link_down(&self->netif);
netif_set_down(&self->netif);
return 0;
}
return ret;
}
/*******************************************************************************/
// Wiznet5k lwIP interface
STATIC err_t wiznet5k_netif_output(struct netif *netif, struct pbuf *p) {
wiznet5k_obj_t *self = netif->state;
pbuf_copy_partial(p, self->eth_frame, p->tot_len, 0);
if (self->trace_flags & TRACE_ETH_TX) {
netutils_ethernet_trace(MP_PYTHON_PRINTER, p->tot_len, self->eth_frame, NETUTILS_TRACE_IS_TX | NETUTILS_TRACE_NEWLINE);
}
wiznet5k_send_ethernet(self, p->tot_len, self->eth_frame);
return ERR_OK;
}
STATIC err_t wiznet5k_netif_init(struct netif *netif) {
netif->linkoutput = wiznet5k_netif_output;
netif->output = etharp_output;
netif->mtu = 1500;
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP;
wiznet5k_get_mac_address(netif->state, netif->hwaddr);
netif->hwaddr_len = sizeof(netif->hwaddr);
int ret = WIZCHIP_EXPORT(socket)(0, Sn_MR_MACRAW, 0, 0);
if (ret != 0) {
printf("WIZNET fatal error in netifinit: %d\n", ret);
return ERR_IF;
}
// Enable MAC filtering so we only get frames destined for us, to reduce load on lwIP
setSn_MR(0, getSn_MR(0) | Sn_MR_MFEN);
return ERR_OK;
}
STATIC void wiznet5k_lwip_init(wiznet5k_obj_t *self) {
ip_addr_t ipconfig[4];
ipconfig[0].addr = 0;
ipconfig[1].addr = 0;
ipconfig[2].addr = 0;
ipconfig[3].addr = 0;
netif_add(&self->netif, &ipconfig[0], &ipconfig[1], &ipconfig[2], self, wiznet5k_netif_init, ethernet_input);
self->netif.name[0] = 'e';
self->netif.name[1] = '0';
netif_set_default(&self->netif);
dns_setserver(0, &ipconfig[3]);
dhcp_set_struct(&self->netif, &self->dhcp_struct);
// Setting NETIF_FLAG_UP then clearing it is a workaround for dhcp_start and the
// LWIP_DHCP_CHECK_LINK_UP option, so that the DHCP client schedules itself to
// automatically start when the interface later goes up.
self->netif.flags |= NETIF_FLAG_UP;
dhcp_start(&self->netif);
self->netif.flags &= ~NETIF_FLAG_UP;
}
void wiznet5k_poll(void) {
wiznet5k_obj_t *self = &wiznet5k_obj;
if ((self->netif.flags & (NETIF_FLAG_UP | NETIF_FLAG_LINK_UP)) == (NETIF_FLAG_UP | NETIF_FLAG_LINK_UP)) {
uint16_t len;
while ((len = wiznet5k_recv_ethernet(self)) > 0) {
if (self->trace_flags & TRACE_ETH_RX) {
netutils_ethernet_trace(MP_PYTHON_PRINTER, len, self->eth_frame, NETUTILS_TRACE_NEWLINE);
}
struct pbuf *p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
if (p != NULL) {
pbuf_take(p, self->eth_frame, len);
if (self->netif.input(p, &self->netif) != ERR_OK) {
pbuf_free(p);
}
}
}
}
wizchip_clrinterrupt(IK_SOCK_0);
#if _WIZCHIP_ == W5100S
setSn_IR(0, Sn_IR_RECV); // W5100S driver bug: must write to the Sn_IR register to reset the IRQ signal
#endif
}
#endif // MICROPY_PY_LWIP
#if WIZNET5K_PROVIDED_STACK
STATIC void wiz_dhcp_assign(void) {
getIPfromDHCP(wiznet5k_obj.netinfo.ip);
getGWfromDHCP(wiznet5k_obj.netinfo.gw);
getSNfromDHCP(wiznet5k_obj.netinfo.sn);
getDNSfromDHCP(wiznet5k_obj.netinfo.dns);
ctlnetwork(CN_SET_NETINFO, (void *)&wiznet5k_obj.netinfo);
}
STATIC void wiz_dhcp_update(void) {
;
}
STATIC void wiz_dhcp_conflict(void) {
;
}
STATIC void wiznet5k_init(void) {
// Configure wiznet provided TCP / socket interface
reg_dhcp_cbfunc(wiz_dhcp_assign, wiz_dhcp_update, wiz_dhcp_conflict);
uint8_t sn_size[16] = {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2}; // 2k buffer for each socket
ctlwizchip(CW_INIT_WIZCHIP, sn_size);
ctlnetwork(CN_SET_NETINFO, (void *)&wiznet5k_obj.netinfo);
// set some sensible default values; they are configurable using ifconfig method
wiz_NetInfo netinfo = {
.mac = {0, 0, 0, 0, 0, 0},
.ip = {192, 168, 0, 18},
.sn = {255, 255, 255, 0},
.gw = {192, 168, 0, 1},
.dns = {8, 8, 8, 8}, // Google public DNS
.dhcp = NETINFO_STATIC,
};
wiznet5k_obj.netinfo = netinfo;
// register with network module
mod_network_register_nic(&wiznet5k_obj);
wiznet5k_obj.active = true;
}
STATIC int wiznet5k_gethostbyname(mp_obj_t nic, const char *name, mp_uint_t len, uint8_t *out_ip) {
uint8_t dns_ip[MOD_NETWORK_IPADDR_BUF_SIZE] = {8, 8, 8, 8};
uint8_t *buf = m_new(uint8_t, MAX_DNS_BUF_SIZE);
DNS_init(2, buf);
if (wiznet5k_obj.netinfo.dns[0]) {
memcpy(dns_ip, wiznet5k_obj.netinfo.dns, MOD_NETWORK_IPADDR_BUF_SIZE);
}
mp_int_t ret = DNS_run(dns_ip, (uint8_t *)name, out_ip);
m_del(uint8_t, buf, MAX_DNS_BUF_SIZE);
if (ret == 1) {
// success
return 0;
} else {
// failure
return -2;
}
}
STATIC int wiznet5k_socket_socket(mod_network_socket_obj_t *socket, int *_errno) {
if (socket->domain != MOD_NETWORK_AF_INET) {
*_errno = MP_EAFNOSUPPORT;
return -1;
}
switch (socket->type) {
case MOD_NETWORK_SOCK_STREAM:
socket->type = Sn_MR_TCP;
break;
case MOD_NETWORK_SOCK_DGRAM:
socket->type = Sn_MR_UDP;
break;
default:
*_errno = MP_EINVAL;
return -1;
}
if (socket->fileno == -1) {
// get first unused socket number
for (mp_uint_t sn = 0; sn < _WIZCHIP_SOCK_NUM_; sn++) {
if ((wiznet5k_obj.socket_used & (1 << sn)) == 0) {
wiznet5k_obj.socket_used |= (1 << sn);
socket->fileno = sn;
break;
}
}
if (socket->fileno == -1) {
// too many open sockets
*_errno = MP_EMFILE;
return -1;
}
}
// WIZNET does not have a concept of pure "open socket". You need to know
// if it's a server or client at the time of creation of the socket.
// So, we defer the open until we know what kind of socket we want.
// use "domain" to indicate that this socket has not yet been opened
socket->domain = 0;
return 0;
}
STATIC void wiznet5k_socket_close(mod_network_socket_obj_t *socket) {
uint8_t sn = (uint8_t)socket->fileno;
if (sn < _WIZCHIP_SOCK_NUM_) {
wiznet5k_obj.socket_used &= ~(1 << sn);
WIZCHIP_EXPORT(close)(sn);
}
}
STATIC int wiznet5k_socket_bind(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
// open the socket in server mode (if port != 0)
mp_int_t ret = WIZCHIP_EXPORT(socket)(socket->fileno, socket->type, port, 0);
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
// indicate that this socket has been opened
socket->domain = 1;
// success
return 0;
}
STATIC int wiznet5k_socket_listen(mod_network_socket_obj_t *socket, mp_int_t backlog, int *_errno) {
mp_int_t ret = WIZCHIP_EXPORT(listen)(socket->fileno);
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return 0;
}
STATIC int wiznet5k_socket_accept(mod_network_socket_obj_t *socket, mod_network_socket_obj_t *socket2, byte *ip, mp_uint_t *port, int *_errno) {
for (;;) {
int sr = getSn_SR((uint8_t)socket->fileno);
if (sr == SOCK_ESTABLISHED) {
socket2->domain = socket->domain;
socket2->type = socket->type;
socket2->fileno = socket->fileno;
getSn_DIPR((uint8_t)socket2->fileno, ip);
*port = getSn_PORT(socket2->fileno);
// WIZnet turns the listening socket into the client socket, so we
// need to re-bind and re-listen on another socket for the server.
// TODO handle errors, especially no-more-sockets error
socket->domain = MOD_NETWORK_AF_INET;
socket->fileno = -1;
int _errno2;
if (wiznet5k_socket_socket(socket, &_errno2) != 0) {
// printf("(bad resocket %d)\n", _errno2);
} else if (wiznet5k_socket_bind(socket, NULL, *port, &_errno2) != 0) {
// printf("(bad rebind %d)\n", _errno2);
} else if (wiznet5k_socket_listen(socket, 0, &_errno2) != 0) {
// printf("(bad relisten %d)\n", _errno2);
}
return 0;
}
if (sr == SOCK_CLOSED || sr == SOCK_CLOSE_WAIT) {
wiznet5k_socket_close(socket);
*_errno = MP_ENOTCONN; // ??
return -1;
}
mp_hal_delay_ms(1);
}
}
STATIC int wiznet5k_socket_connect(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
// use "bind" function to open the socket in client mode
if (wiznet5k_socket_bind(socket, ip, 0, _errno) != 0) {
return -1;
}
// now connect
MP_THREAD_GIL_EXIT();
mp_int_t ret = WIZCHIP_EXPORT(connect)(socket->fileno, ip, port);
MP_THREAD_GIL_ENTER();
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
// success
return 0;
}
STATIC mp_uint_t wiznet5k_socket_send(mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, int *_errno) {
MP_THREAD_GIL_EXIT();
mp_int_t ret = WIZCHIP_EXPORT(send)(socket->fileno, (byte *)buf, len);
MP_THREAD_GIL_ENTER();
// TODO convert Wiz errno's to POSIX ones
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return ret;
}
STATIC mp_uint_t wiznet5k_socket_recv(mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, int *_errno) {
MP_THREAD_GIL_EXIT();
mp_int_t ret = WIZCHIP_EXPORT(recv)(socket->fileno, buf, len);
MP_THREAD_GIL_ENTER();
// TODO convert Wiz errno's to POSIX ones
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return ret;
}
STATIC mp_uint_t wiznet5k_socket_sendto(mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, byte *ip, mp_uint_t port, int *_errno) {
if (socket->domain == 0) {
// socket not opened; use "bind" function to open the socket in client mode
if (wiznet5k_socket_bind(socket, ip, 0, _errno) != 0) {
return -1;
}
}
MP_THREAD_GIL_EXIT();
mp_int_t ret = WIZCHIP_EXPORT(sendto)(socket->fileno, (byte *)buf, len, ip, port);
MP_THREAD_GIL_ENTER();
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return ret;
}
STATIC mp_uint_t wiznet5k_socket_recvfrom(mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, byte *ip, mp_uint_t *port, int *_errno) {
uint16_t port2;
MP_THREAD_GIL_EXIT();
mp_int_t ret = WIZCHIP_EXPORT(recvfrom)(socket->fileno, buf, len, ip, &port2);
MP_THREAD_GIL_ENTER();
*port = port2;
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return ret;
}
STATIC int wiznet5k_socket_setsockopt(mod_network_socket_obj_t *socket, mp_uint_t level, mp_uint_t opt, const void *optval, mp_uint_t optlen, int *_errno) {
// TODO
*_errno = MP_EINVAL;
return -1;
}
STATIC int wiznet5k_socket_settimeout(mod_network_socket_obj_t *socket, mp_uint_t timeout_ms, int *_errno) {
// TODO
*_errno = MP_EINVAL;
return -1;
/*
if (timeout_ms == 0) {
// set non-blocking mode
uint8_t arg = SOCK_IO_NONBLOCK;
WIZCHIP_EXPORT(ctlsocket)(socket->fileno, CS_SET_IOMODE, &arg);
}
*/
}
STATIC int wiznet5k_socket_ioctl(mod_network_socket_obj_t *socket, mp_uint_t request, mp_uint_t arg, int *_errno) {
if (request == MP_STREAM_POLL) {
int ret = 0;
if (arg & MP_STREAM_POLL_RD && getSn_RX_RSR(socket->fileno) != 0) {
ret |= MP_STREAM_POLL_RD;
}
if (arg & MP_STREAM_POLL_WR && getSn_TX_FSR(socket->fileno) != 0) {
ret |= MP_STREAM_POLL_WR;
}
return ret;
} else {
*_errno = MP_EINVAL;
return MP_STREAM_ERROR;
}
}
STATIC void wiznet5k_dhcp_init(wiznet5k_obj_t *self) {
uint8_t test_buf[2048];
uint8_t ret = 0;
uint8_t dhcp_retry = 0;
while (ret != DHCP_IP_LEASED) {
mp_uint_t timeout = mp_hal_ticks_ms() + 3000;
DHCP_init(1, test_buf);
while (1) {
ret = DHCP_run();
if (ret == DHCP_IP_LEASED) {
break;
} else if (ret == DHCP_FAILED || mp_hal_ticks_ms() > timeout) {
dhcp_retry++;
break;
}
mpy_wiznet_yield();
}
if (dhcp_retry > 3) {
mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("timeout waiting for DHCP to get IP address"));
break;
}
}
if (ret == DHCP_IP_LEASED) {
ctlnetwork(CN_GET_NETINFO, &self->netinfo);
}
}
#endif // WIZNET5K_PROVIDED_STACK
/*******************************************************************************/
// MicroPython bindings
// WIZNET5K(spi, pin_cs, pin_rst[, pin_intn])
// Create and return a WIZNET5K object.
STATIC mp_obj_t wiznet5k_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_obj_base_t *spi;
mp_hal_pin_obj_t cs;
mp_hal_pin_obj_t rst;
#if WIZNET5K_WITH_LWIP_STACK
mp_hal_pin_obj_t pin_intn = (mp_hal_pin_obj_t)NULL;
bool use_interrupt = false;
// Bring down interface while configuring
wiznet5k_obj.netif.flags = 0;
#endif
#ifdef MICROPY_HW_WIZNET_SPI_ID
// Allow auto-configuration of SPI if defined for board and no args passed
if (n_args == 0 && n_kw == 0) {
// Initialize SPI.
mp_obj_t spi_obj = MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_SPI_SCK);
mp_obj_t miso_obj = MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_SPI_MISO);
mp_obj_t mosi_obj = MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_SPI_MOSI);
mp_obj_t args[] = {
MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_SPI_ID),
MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_SPI_BAUDRATE),
MP_ROM_QSTR(MP_QSTR_sck), mp_pin_make_new(NULL, 1, 0, &spi_obj),
MP_ROM_QSTR(MP_QSTR_miso), mp_pin_make_new(NULL, 1, 0, &miso_obj),
MP_ROM_QSTR(MP_QSTR_mosi), mp_pin_make_new(NULL, 1, 0, &mosi_obj),
};
spi = MP_OBJ_TO_PTR(MP_OBJ_TYPE_GET_SLOT(&machine_spi_type, make_new)((mp_obj_t)&machine_spi_type, 2, 3, args));
cs = mp_hal_get_pin_obj(mp_pin_make_new(NULL, 1, 0, (mp_obj_t[]) {MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_PIN_CS)}));
rst = mp_hal_get_pin_obj(mp_pin_make_new(NULL, 1, 0, (mp_obj_t[]) {MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_PIN_RST)}));
#if WIZNET5K_WITH_LWIP_STACK && defined(MICROPY_HW_WIZNET_PIN_INTN)
pin_intn = mp_hal_get_pin_obj(mp_pin_make_new(NULL, 1, 0, (mp_obj_t[]) {MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIZNET_PIN_INTN)}));
use_interrupt = true;
#endif
} else
#endif
{
// If passing in args, must supply spi, pin_cs, pin_rst and optionally pin_intn
#if WIZNET5K_WITH_LWIP_STACK
mp_arg_check_num(n_args, n_kw, 3, 4, false);
#else
mp_arg_check_num(n_args, n_kw, 3, 3, false);
#endif
spi = mp_hal_get_spi_obj(args[0]);
cs = mp_hal_get_pin_obj(args[1]);
rst = mp_hal_get_pin_obj(args[2]);
#if WIZNET5K_WITH_LWIP_STACK
if (n_args > 3) {
pin_intn = mp_hal_get_pin_obj(args[3]);
use_interrupt = true;
}
#endif
}
mp_hal_pin_output(cs);
mp_hal_pin_output(rst);
// Init the wiznet5k object
wiznet5k_obj.base.type = (mp_obj_type_t *)&mod_network_nic_type_wiznet5k;
wiznet5k_obj.cris_state = 0;
wiznet5k_obj.spi = spi;
wiznet5k_obj.spi_transfer = ((mp_machine_spi_p_t *)MP_OBJ_TYPE_GET_SLOT(spi->type, protocol))->transfer;
wiznet5k_obj.cs = cs;
wiznet5k_obj.rst = rst;
#if WIZNET5K_WITH_LWIP_STACK
wiznet5k_obj.pin_intn = pin_intn;
wiznet5k_obj.use_interrupt = use_interrupt;
wiznet5k_obj.trace_flags = 0;
#else // WIZNET5K_PROVIDED_STACK
wiznet5k_obj.active = false;
wiznet5k_obj.socket_used = 0;
#endif
// Return wiznet5k object
return MP_OBJ_FROM_PTR(&wiznet5k_obj);
}
// regs()
// Dump WIZNET5K registers.
STATIC mp_obj_t wiznet5k_regs(mp_obj_t self_in) {
(void)self_in;
printf("Wiz CREG:");
for (int i = 0; i < 0x50; ++i) {
if (i % 16 == 0) {
printf("\n %04x:", i);
}
#if _WIZCHIP_ == 5500
uint32_t reg = _W5500_IO_BASE_ | i << 8;
#else
uint32_t reg = i;
#endif
printf(" %02x", WIZCHIP_READ(reg));
}
for (int sn = 0; sn < 4; ++sn) {
printf("\nWiz SREG[%d]:", sn);
for (int i = 0; i < 0x30; ++i) {
if (i % 16 == 0) {
printf("\n %04x:", i);
}
#if _WIZCHIP_ == 5500
uint32_t reg = _W5500_IO_BASE_ | i << 8 | WIZCHIP_SREG_BLOCK(sn) << 3;
#else
uint32_t reg = WIZCHIP_SREG_ADDR(sn, i);
#endif
printf(" %02x", WIZCHIP_READ(reg));
}
}
printf("\n");
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wiznet5k_regs_obj, wiznet5k_regs);
STATIC mp_obj_t wiznet5k_isconnected(mp_obj_t self_in) {
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(self_in);
return mp_obj_new_bool(
wizphy_getphylink() == PHY_LINK_ON
&& IS_ACTIVE(self)
#if WIZNET5K_WITH_LWIP_STACK
&& self->netif.ip_addr.addr != 0
#endif
);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wiznet5k_isconnected_obj, wiznet5k_isconnected);
STATIC mp_obj_t wiznet5k_active(size_t n_args, const mp_obj_t *args) {
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (n_args == 1) {
return mp_obj_new_bool(IS_ACTIVE(self));
} else {
if (mp_obj_is_true(args[1])) {
if (!IS_ACTIVE(self)) {
/*!< Wiznet initialisation */
// Reset the chip
mp_hal_pin_low(wiznet5k_obj.rst);
mp_hal_delay_ms(1); // datasheet says 2us
mp_hal_pin_high(wiznet5k_obj.rst);
mp_hal_delay_ms(160); // datasheet says 150ms
// Set physical interface callbacks
reg_wizchip_cris_cbfunc(wiz_cris_enter, wiz_cris_exit);
reg_wizchip_cs_cbfunc(wiz_cs_select, wiz_cs_deselect);
reg_wizchip_spi_cbfunc(wiz_spi_readbyte, wiz_spi_writebyte);
reg_wizchip_spiburst_cbfunc(wiz_spi_read, wiz_spi_write);
// Configure lwip/provided specific settings
wiznet5k_init();
// If the device doesn't have a MAC address then set one
#if WIZNET5K_WITH_LWIP_STACK
uint8_t *mac = self->netif.hwaddr;
#else // WIZNET5K_PROVIDED_STACK
uint8_t *mac = wiznet5k_obj.netinfo.mac;
#endif
getSHAR(mac);
if ((mac[0] | mac[1] | mac[2] | mac[3] | mac[4] | mac[5]) == 0) {
mp_hal_get_mac(MP_HAL_MAC_ETH0, mac);
setSHAR(mac);
}
// seems we need a small delay after init
mp_hal_delay_ms(250);
}
} else {
#if WIZNET5K_WITH_LWIP_STACK
netif_set_down(&self->netif);
netif_set_link_down(&self->netif);
wiznet5k_deinit();
#else // WIZNET5K_PROVIDED_STACK
self->active = false;
wizchip_sw_reset();
#endif
}
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(wiznet5k_active_obj, 1, 2, wiznet5k_active);
#if WIZNET5K_PROVIDED_STACK
// ifconfig([(ip, subnet, gateway, dns)])
// Get/set IP address, subnet mask, gateway and DNS.
STATIC mp_obj_t wiznet5k_ifconfig(size_t n_args, const mp_obj_t *args) {
wiz_NetInfo netinfo;
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(args[0]);
ctlnetwork(CN_GET_NETINFO, &netinfo);
if (n_args == 1) {
// Get IP addresses
mp_obj_t tuple[4] = {
netutils_format_ipv4_addr(netinfo.ip, NETUTILS_BIG),
netutils_format_ipv4_addr(netinfo.sn, NETUTILS_BIG),
netutils_format_ipv4_addr(netinfo.gw, NETUTILS_BIG),
netutils_format_ipv4_addr(netinfo.dns, NETUTILS_BIG),
};
return mp_obj_new_tuple(4, tuple);
} else if (args[1] == MP_OBJ_NEW_QSTR(MP_QSTR_dhcp)) {
// Start the DHCP client
self->netinfo.dhcp = NETINFO_DHCP;
wiznet5k_dhcp_init((void *)self);
mp_obj_t tuple[4] = {
netutils_format_ipv4_addr(self->netinfo.ip, NETUTILS_BIG),
netutils_format_ipv4_addr(self->netinfo.sn, NETUTILS_BIG),
netutils_format_ipv4_addr(self->netinfo.gw, NETUTILS_BIG),
netutils_format_ipv4_addr(self->netinfo.dns, NETUTILS_BIG),
};
return mp_obj_new_tuple(4, tuple);
} else {
// Set static IP addresses
self->netinfo.dhcp = NETINFO_STATIC;
mp_obj_t *items;
mp_obj_get_array_fixed_n(args[1], 4, &items);
netutils_parse_ipv4_addr(items[0], netinfo.ip, NETUTILS_BIG);
netutils_parse_ipv4_addr(items[1], netinfo.sn, NETUTILS_BIG);
netutils_parse_ipv4_addr(items[2], netinfo.gw, NETUTILS_BIG);
netutils_parse_ipv4_addr(items[3], netinfo.dns, NETUTILS_BIG);
ctlnetwork(CN_SET_NETINFO, &netinfo);
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(wiznet5k_ifconfig_obj, 1, 2, wiznet5k_ifconfig);
#endif // WIZNET5K_PROVIDED_STACK
#if WIZNET5K_WITH_LWIP_STACK
STATIC mp_obj_t wiznet5k_ifconfig(size_t n_args, const mp_obj_t *args) {
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(args[0]);
return mod_network_nic_ifconfig(&self->netif, n_args - 1, args + 1);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(wiznet5k_ifconfig_obj, 1, 2, wiznet5k_ifconfig);
STATIC mp_obj_t send_ethernet_wrapper(mp_obj_t self_in, mp_obj_t buf_in) {
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_buffer_info_t buf;
mp_get_buffer_raise(buf_in, &buf, MP_BUFFER_READ);
wiznet5k_send_ethernet(self, buf.len, buf.buf);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(send_ethernet_obj, send_ethernet_wrapper);
#endif // MICROPY_PY_LWIP
STATIC mp_obj_t wiznet5k_status(size_t n_args, const mp_obj_t *args) {
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(args[0]);
(void)self;
if (n_args == 1) {
// No arguments: return link status
if (wizphy_getphylink() == PHY_LINK_ON) {
if (IS_ACTIVE(self)) {
return MP_OBJ_NEW_SMALL_INT(2);
} else {
return MP_OBJ_NEW_SMALL_INT(1);
}
} else {
return MP_OBJ_NEW_SMALL_INT(0);
}
}
mp_raise_ValueError(MP_ERROR_TEXT("unknown status param"));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(wiznet5k_status_obj, 1, 2, wiznet5k_status);
STATIC mp_obj_t wiznet5k_config(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
wiznet5k_obj_t *self = MP_OBJ_TO_PTR(args[0]);
if (kwargs->used == 0) {
// Get config value
if (n_args != 2) {
mp_raise_TypeError(MP_ERROR_TEXT("must query one param"));
}
switch (mp_obj_str_get_qstr(args[1])) {
case MP_QSTR_mac: {
uint8_t buf[6];
wiznet5k_get_mac_address(self, buf);
return mp_obj_new_bytes(buf, 6);
}
default:
mp_raise_ValueError(MP_ERROR_TEXT("unknown config param"));
}
} else {
// Set config value(s)
if (n_args != 1) {
mp_raise_TypeError(MP_ERROR_TEXT("can't specify pos and kw args"));
}
for (size_t i = 0; i < kwargs->alloc; ++i) {
if (MP_MAP_SLOT_IS_FILLED(kwargs, i)) {
mp_map_elem_t *e = &kwargs->table[i];
switch (mp_obj_str_get_qstr(e->key)) {
case MP_QSTR_mac: {
mp_buffer_info_t buf;
mp_get_buffer_raise(e->value, &buf, MP_BUFFER_READ);
if (buf.len != 6) {
mp_raise_ValueError(NULL);
}
setSHAR(buf.buf);
#if WIZNET5K_WITH_LWIP_STACK
memcpy(self->netif.hwaddr, buf.buf, 6);
#endif
break;
}
#if WIZNET5K_WITH_LWIP_STACK
case MP_QSTR_trace: {
self->trace_flags = mp_obj_get_int(e->value);
break;
}
#endif
default:
mp_raise_ValueError(MP_ERROR_TEXT("unknown config param"));
}
}
}
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(wiznet5k_config_obj, 1, wiznet5k_config);
STATIC const mp_rom_map_elem_t wiznet5k_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_regs), MP_ROM_PTR(&wiznet5k_regs_obj) },
{ MP_ROM_QSTR(MP_QSTR_isconnected), MP_ROM_PTR(&wiznet5k_isconnected_obj) },
{ MP_ROM_QSTR(MP_QSTR_active), MP_ROM_PTR(&wiznet5k_active_obj) },
{ MP_ROM_QSTR(MP_QSTR_ifconfig), MP_ROM_PTR(&wiznet5k_ifconfig_obj) },
{ MP_ROM_QSTR(MP_QSTR_status), MP_ROM_PTR(&wiznet5k_status_obj) },
{ MP_ROM_QSTR(MP_QSTR_config), MP_ROM_PTR(&wiznet5k_config_obj) },
#if WIZNET5K_WITH_LWIP_STACK
{ MP_ROM_QSTR(MP_QSTR_send_ethernet), MP_ROM_PTR(&send_ethernet_obj) },
#endif
};
STATIC MP_DEFINE_CONST_DICT(wiznet5k_locals_dict, wiznet5k_locals_dict_table);
#if WIZNET5K_WITH_LWIP_STACK
#define NIC_TYPE_WIZNET_PROTOCOL
#else // WIZNET5K_PROVIDED_STACK
const mod_network_nic_protocol_t mod_network_nic_protocol_wiznet = {
.gethostbyname = wiznet5k_gethostbyname,
.socket = wiznet5k_socket_socket,
.close = wiznet5k_socket_close,
.bind = wiznet5k_socket_bind,
.listen = wiznet5k_socket_listen,
.accept = wiznet5k_socket_accept,
.connect = wiznet5k_socket_connect,
.send = wiznet5k_socket_send,
.recv = wiznet5k_socket_recv,
.sendto = wiznet5k_socket_sendto,
.recvfrom = wiznet5k_socket_recvfrom,
.setsockopt = wiznet5k_socket_setsockopt,
.settimeout = wiznet5k_socket_settimeout,
.ioctl = wiznet5k_socket_ioctl,
};
#define NIC_TYPE_WIZNET_PROTOCOL protocol, &mod_network_nic_protocol_wiznet,
#endif
MP_DEFINE_CONST_OBJ_TYPE(
mod_network_nic_type_wiznet5k,
MP_QSTR_WIZNET5K,
MP_TYPE_FLAG_NONE,
make_new, wiznet5k_make_new,
NIC_TYPE_WIZNET_PROTOCOL
locals_dict, &wiznet5k_locals_dict
);
#endif // MICROPY_PY_NETWORK_WIZNET5K
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