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circuitpython/shared-module/wiznet/wiznet5k.c

432 lines
14 KiB

/*
* 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 "py/objlist.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "py/stream.h"
#include "py/mperrno.h"
#include "py/mphal.h"
#include "lib/netutils/netutils.h"
#if MICROPY_PY_WIZNET5K
#include "shared-module/network/__init__.h"
#include "shared-bindings/digitalio/DigitalInOut.h"
#include "shared-bindings/digitalio/DriveMode.h"
#include "shared-bindings/busio/SPI.h"
#include "shared-module/network/__init__.h"
#include "ethernet/wizchip_conf.h"
#include "ethernet/socket.h"
#include "internet/dns/dns.h"
#include "internet/dhcp/dhcp.h"
#include "shared-module/wiznet/wiznet5k.h"
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) {
common_hal_digitalio_digitalinout_set_value(&wiznet5k_obj.cs, 0);
}
STATIC void wiz_cs_deselect(void) {
common_hal_digitalio_digitalinout_set_value(&wiznet5k_obj.cs, 1);
}
STATIC void wiz_spi_read(uint8_t *buf, uint32_t len) {
(void)common_hal_busio_spi_read(wiznet5k_obj.spi, buf, len, 0);
}
STATIC void wiz_spi_write(const uint8_t *buf, uint32_t len) {
(void)common_hal_busio_spi_write(wiznet5k_obj.spi, buf, len);
}
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(0, buf);
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;
}
}
int get_available_socket(wiznet5k_obj_t *wiz) {
for (uint8_t sn = 0; sn < _WIZCHIP_SOCK_NUM_; sn++) {
if ((wiz->socket_used & (1 << sn)) == 0) {
wiz->socket_used |= (1 << sn);
return sn;
}
}
return -1;
}
int wiznet5k_socket_socket(mod_network_socket_obj_t *socket, int *_errno) {
if (socket->u_param.domain != MOD_NETWORK_AF_INET) {
*_errno = MP_EAFNOSUPPORT;
return -1;
}
switch (socket->u_param.type) {
case MOD_NETWORK_SOCK_STREAM: socket->u_param.type = Sn_MR_TCP; break;
case MOD_NETWORK_SOCK_DGRAM: socket->u_param.type = Sn_MR_UDP; break;
default: *_errno = MP_EINVAL; return -1;
}
if (socket->u_param.fileno == -1) {
// get first unused socket number
socket->u_param.fileno = get_available_socket(&wiznet5k_obj);
if (socket->u_param.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->u_param.domain = 0;
return 0;
}
void wiznet5k_socket_close(mod_network_socket_obj_t *socket) {
uint8_t sn = (uint8_t)socket->u_param.fileno;
if (sn < _WIZCHIP_SOCK_NUM_) {
wiznet5k_obj.socket_used &= ~(1 << sn);
WIZCHIP_EXPORT(close)(sn);
}
}
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->u_param.fileno, socket->u_param.type, port, 0);
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
// indicate that this socket has been opened
socket->u_param.domain = 1;
// success
return 0;
}
int wiznet5k_socket_listen(mod_network_socket_obj_t *socket, mp_int_t backlog, int *_errno) {
mp_int_t ret = WIZCHIP_EXPORT(listen)(socket->u_param.fileno);
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return 0;
}
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->u_param.fileno);
if (sr == SOCK_ESTABLISHED) {
socket2->u_param = socket->u_param;
getSn_DIPR((uint8_t)socket2->u_param.fileno, ip);
*port = getSn_PORT(socket2->u_param.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->u_param.domain = MOD_NETWORK_AF_INET;
socket->u_param.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);
}
}
int wiznet5k_socket_connect(mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno) {
uint16_t src_port = network_module_create_random_source_tcp_port();
// make sure same outgoing port number can't be in use by two different sockets.
src_port = (src_port & ~(_WIZCHIP_SOCK_NUM_ - 1)) | socket->u_param.fileno;
// use "bind" function to open the socket in client mode
if (wiznet5k_socket_bind(socket, NULL, src_port, _errno) != 0) {
return -1;
}
// now connect
MP_THREAD_GIL_EXIT();
mp_int_t ret = WIZCHIP_EXPORT(connect)(socket->u_param.fileno, ip, port);
MP_THREAD_GIL_ENTER();
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
// success
return 0;
}
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->u_param.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;
}
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->u_param.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;
}
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->u_param.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->u_param.fileno, (byte*)buf, len, ip, port);
MP_THREAD_GIL_ENTER();
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return ret;
}
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->u_param.fileno, buf, len, ip, &port2);
MP_THREAD_GIL_ENTER();
*port = port2;
if (ret < 0) {
wiznet5k_socket_close(socket);
*_errno = -ret;
return -1;
}
return ret;
}
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;
}
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->u_param.fileno, CS_SET_IOMODE, &arg);
}
*/
}
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->u_param.fileno) != 0) {
ret |= MP_STREAM_POLL_RD;
}
if (arg & MP_STREAM_POLL_WR && getSn_TX_FSR(socket->u_param.fileno) != 0) {
ret |= MP_STREAM_POLL_WR;
}
return ret;
} else {
*_errno = MP_EINVAL;
return MP_STREAM_ERROR;
}
}
void wiznet5k_socket_timer_tick(mod_network_socket_obj_t *socket) {
if (wiznet5k_obj.dhcp_socket >= 0) {
DHCP_time_handler();
DHCP_run();
}
}
int wiznet5k_start_dhcp(void) {
// XXX this should throw an error if DHCP fails
static DHCP_INIT_BUFFER_TYPE dhcp_buf[DHCP_INIT_BUFFER_SIZE];
if (wiznet5k_obj.dhcp_socket < 0) {
// Set up the socket to listen on UDP 68 before calling DHCP_init
wiznet5k_obj.dhcp_socket = get_available_socket(&wiznet5k_obj);
if (wiznet5k_obj.dhcp_socket < 0) return MP_EMFILE;
WIZCHIP_EXPORT(socket)(wiznet5k_obj.dhcp_socket, MOD_NETWORK_SOCK_DGRAM, DHCP_CLIENT_PORT, 0);
DHCP_init(wiznet5k_obj.dhcp_socket, dhcp_buf);
}
return 0;
}
int wiznet5k_stop_dhcp(void) {
if (wiznet5k_obj.dhcp_socket >= 0) {
DHCP_stop();
WIZCHIP_EXPORT(close)(wiznet5k_obj.dhcp_socket);
wiznet5k_obj.socket_used &= ~(1 << wiznet5k_obj.dhcp_socket);
wiznet5k_obj.dhcp_socket = -1;
}
return 0;
}
bool wiznet5k_check_dhcp(void) {
return wiznet5k_obj.dhcp_socket >= 0;
}
void wiznet5k_reset(void) {
if (wiznet5k_obj.rst.pin) {
// hardware reset if using RST pin
common_hal_digitalio_digitalinout_set_value(&wiznet5k_obj.rst, 0);
mp_hal_delay_us(10); // datasheet says 2us
common_hal_digitalio_digitalinout_set_value(&wiznet5k_obj.rst, 1);
mp_hal_delay_ms(150); // datasheet says 150ms
} else {
// otherwise, software reset
wizchip_sw_reset();
}
}
void wiznet5k_socket_deinit(mod_network_socket_obj_t *socket) {
wiznet5k_reset();
}
/// Create and return a WIZNET5K object.
mp_obj_t wiznet5k_create(busio_spi_obj_t *spi_in, const mcu_pin_obj_t *cs_in, const mcu_pin_obj_t *rst_in) {
// 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_in;
wiznet5k_obj.socket_used = 0;
wiznet5k_obj.dhcp_socket = -1;
/*!< SPI configuration */
// XXX probably should check if the provided SPI is already configured, and
// if so skip configuration?
common_hal_busio_spi_configure(wiznet5k_obj.spi,
10000000, // BAUDRATE 10MHz
1, // HIGH POLARITY
1, // SECOND PHASE TRANSITION
8 // 8 BITS
);
common_hal_digitalio_digitalinout_construct(&wiznet5k_obj.cs, cs_in);
common_hal_digitalio_digitalinout_switch_to_output(&wiznet5k_obj.cs, 1, DRIVE_MODE_PUSH_PULL);
if (rst_in) common_hal_digitalio_digitalinout_construct(&wiznet5k_obj.rst, rst_in);
wiznet5k_reset();
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_read, wiz_spi_write);
// 2k buffer for each socket
uint8_t sn_size[16] = {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};
ctlwizchip(CW_INIT_WIZCHIP, sn_size);
wiz_NetInfo netinfo = {
.dhcp = NETINFO_DHCP,
};
network_module_create_random_mac_address(netinfo.mac);
ctlnetwork(CN_SET_NETINFO, (void*)&netinfo);
// seems we need a small delay after init
mp_hal_delay_ms(250);
// register with network module
network_module_register_nic(&wiznet5k_obj);
// return wiznet5k object
return &wiznet5k_obj;
}
#endif // MICROPY_PY_WIZNET5K