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circuitpython/cc3200/mods/modwlan.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Daniel Campora
*
* 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 <stdint.h>
#include <stdbool.h>
#include "std.h"
#include "simplelink.h"
#include "py/mpconfig.h"
#include MICROPY_HAL_H
#include "py/obj.h"
#include "py/objstr.h"
#include "py/runtime.h"
#include "modnetwork.h"
#include "modwlan.h"
#include "pybioctl.h"
#include "debug.h"
#if (MICROPY_PORT_HAS_TELNET || MICROPY_PORT_HAS_FTP)
#include "serverstask.h"
#endif
#include "mpexception.h"
#include "mpcallback.h"
#include "pybsleep.h"
/******************************************************************************
DEFINE TYPES
******************************************************************************/
// Status bits - These are used to set/reset the corresponding bits in a given variable
typedef enum{
STATUS_BIT_NWP_INIT = 0, // If this bit is set: Network Processor is
// powered up
STATUS_BIT_CONNECTION, // If this bit is set: the device is connected to
// the AP or client is connected to device (AP)
STATUS_BIT_IP_LEASED, // If this bit is set: the device has leased IP to
// any connected client
STATUS_BIT_IP_ACQUIRED, // If this bit is set: the device has acquired an IP
STATUS_BIT_SMARTCONFIG_START, // If this bit is set: the SmartConfiguration
// process is started from SmartConfig app
STATUS_BIT_P2P_DEV_FOUND, // If this bit is set: the device (P2P mode)
// found any p2p-device in scan
STATUS_BIT_P2P_REQ_RECEIVED, // If this bit is set: the device (P2P mode)
// found any p2p-negotiation request
STATUS_BIT_CONNECTION_FAILED, // If this bit is set: the device(P2P mode)
// connection to client(or reverse way) is failed
STATUS_BIT_PING_DONE // If this bit is set: the device has completed
// the ping operation
}e_StatusBits;
typedef struct _wlan_obj_t {
mp_obj_base_t base;
SlWlanMode_t mode;
uint32_t status;
uint32_t ip;
uint32_t gateway;
uint32_t dns;
#if (MICROPY_PORT_HAS_TELNET || MICROPY_PORT_HAS_FTP)
bool servers_enabled;
#endif
uint8_t security;
uint8_t mac[SL_MAC_ADDR_LEN];
uint8_t ssid[33];
uint8_t bssid[6];
uint8_t staconnected;
} wlan_obj_t;
/******************************************************************************
DEFINE CONSTANTS
******************************************************************************/
#define CLR_STATUS_BIT_ALL(status) (status = 0)
#define SET_STATUS_BIT(status, bit) (status |= ( 1 << (bit)))
#define CLR_STATUS_BIT(status, bit) (status &= ~(1 << (bit)))
#define GET_STATUS_BIT(status, bit) (0 != (status & (1 << (bit))))
#define IS_NW_PROCSR_ON(status) GET_STATUS_BIT(status, STATUS_BIT_NWP_INIT)
#define IS_CONNECTED(status) GET_STATUS_BIT(status, STATUS_BIT_CONNECTION)
#define IS_IP_LEASED(status) GET_STATUS_BIT(status, STATUS_BIT_IP_LEASED)
#define IS_IP_ACQUIRED(status) GET_STATUS_BIT(status, STATUS_BIT_IP_ACQUIRED)
#define IS_SMART_CFG_START(status) GET_STATUS_BIT(status, STATUS_BIT_SMARTCONFIG_START)
#define IS_P2P_DEV_FOUND(status) GET_STATUS_BIT(status, STATUS_BIT_P2P_DEV_FOUND)
#define IS_P2P_REQ_RCVD(status) GET_STATUS_BIT(status, STATUS_BIT_P2P_REQ_RECEIVED)
#define IS_CONNECT_FAILED(status) GET_STATUS_BIT(status, STATUS_BIT_CONNECTION_FAILED)
#define IS_PING_DONE(status) GET_STATUS_BIT(status, STATUS_BIT_PING_DONE)
#define MODWLAN_SL_SCAN_ENABLE 1
#define MODWLAN_SL_SCAN_DISABLE 0
#define MODWLAN_SL_MAX_NETWORKS 20
#define MODWLAN_TIMEOUT_MS 5000
#define MODWLAN_MAX_NETWORKS 20
#define MODWLAN_SCAN_PERIOD_S 300 // 5 minutes
#define MODWLAN_WAIT_FOR_SCAN_MS 1050
#define ASSERT_ON_ERROR( x ) ASSERT((x) >= 0 )
#define IPV4_ADDR_STR_LEN_MAX (16)
#define WLAN_MAX_RX_SIZE 16000
#define WLAN_MAX_TX_SIZE 1476
#define MODWLAN_IP_MODE_DYNAMIC 0
#define MODWLAN_IP_MODE_STATIC 1
#define MAKE_SOCKADDR(addr, ip, port) sockaddr addr; \
addr.sa_family = AF_INET; \
addr.sa_data[0] = port >> 8; \
addr.sa_data[1] = port; \
addr.sa_data[2] = ip[3]; \
addr.sa_data[3] = ip[2]; \
addr.sa_data[4] = ip[1]; \
addr.sa_data[5] = ip[0];
#define UNPACK_SOCKADDR(addr, ip, port) port = (addr.sa_data[0] << 8) | addr.sa_data[1]; \
ip[0] = addr.sa_data[5]; \
ip[1] = addr.sa_data[4]; \
ip[2] = addr.sa_data[3]; \
ip[3] = addr.sa_data[2];
/******************************************************************************
DECLARE PRIVATE DATA
******************************************************************************/
STATIC wlan_obj_t wlan_obj = {
.mode = -1,
.status = 0,
.ip = 0,
.gateway = 0,
.dns = 0,
#if (MICROPY_PORT_HAS_TELNET || MICROPY_PORT_HAS_FTP)
.servers_enabled = false,
#endif
.security = SL_SEC_TYPE_OPEN,
.ssid = {0},
.bssid = {0},
.mac = {0},
.staconnected = 0
};
STATIC const mp_cb_methods_t wlan_cb_methods;
/******************************************************************************
DECLARE PUBLIC DATA
******************************************************************************/
OsiLockObj_t wlan_LockObj;
/******************************************************************************
DECLARE PRIVATE FUNCTIONS
******************************************************************************/
STATIC void wlan_initialize_data (void);
STATIC void wlan_reenable (SlWlanMode_t mode);
STATIC void wlan_servers_start (void);
STATIC void wlan_servers_stop (void);
STATIC void wlan_get_sl_mac (void);
STATIC modwlan_Status_t wlan_do_connect (const char* ssid, uint32_t ssid_len, const char* bssid, uint8_t sec,
const char* key, uint32_t key_len);
STATIC void wlan_lpds_callback_enable (mp_obj_t self_in);
STATIC void wlan_lpds_callback_disable (mp_obj_t self_in);
STATIC bool wlan_scan_result_is_unique (const mp_obj_list_t *nets, _u8 *bssid);
//*****************************************************************************
//
//! \brief The Function Handles WLAN Events
//!
//! \param[in] pWlanEvent - Pointer to WLAN Event Info
//!
//! \return None
//!
//*****************************************************************************
void SimpleLinkWlanEventHandler(SlWlanEvent_t *pWlanEvent) {
if (!pWlanEvent) {
return;
}
switch(pWlanEvent->Event)
{
case SL_WLAN_CONNECT_EVENT:
{
SET_STATUS_BIT(wlan_obj.status, STATUS_BIT_CONNECTION);
slWlanConnectAsyncResponse_t *pEventData = &pWlanEvent->EventData.STAandP2PModeWlanConnected;
// copy the new connection data
memcpy(wlan_obj.ssid, pEventData->ssid_name, pEventData->ssid_len);
memcpy(wlan_obj.bssid, pEventData->bssid, SL_BSSID_LENGTH);
}
break;
case SL_WLAN_DISCONNECT_EVENT:
{
CLR_STATUS_BIT(wlan_obj.status, STATUS_BIT_CONNECTION);
CLR_STATUS_BIT(wlan_obj.status, STATUS_BIT_IP_ACQUIRED);
memset(wlan_obj.ssid, 0, sizeof(wlan_obj.ssid));
memset(wlan_obj.bssid, 0, sizeof(wlan_obj.bssid));
}
break;
case SL_WLAN_STA_CONNECTED_EVENT:
wlan_obj.staconnected++;
break;
case SL_WLAN_STA_DISCONNECTED_EVENT:
if (wlan_obj.staconnected > 0) {
wlan_obj.staconnected--;
}
break;
case SL_WLAN_P2P_DEV_FOUND_EVENT:
// TODO
break;
case SL_WLAN_P2P_NEG_REQ_RECEIVED_EVENT:
// TODO
break;
case SL_WLAN_CONNECTION_FAILED_EVENT:
// TODO
break;
default:
break;
}
}
//*****************************************************************************
//
//! \brief This function handles network events such as IP acquisition, IP
//! leased, IP released etc.
//!
//! \param[in] pNetAppEvent - Pointer to NetApp Event Info
//!
//! \return None
//!
//*****************************************************************************
void SimpleLinkNetAppEventHandler(SlNetAppEvent_t *pNetAppEvent) {
if(!pNetAppEvent) {
return;
}
switch(pNetAppEvent->Event)
{
case SL_NETAPP_IPV4_IPACQUIRED_EVENT:
{
SlIpV4AcquiredAsync_t *pEventData = NULL;
SET_STATUS_BIT(wlan_obj.status, STATUS_BIT_IP_ACQUIRED);
// Ip Acquired Event Data
pEventData = &pNetAppEvent->EventData.ipAcquiredV4;
// Get ip, gateway and dns
wlan_obj.gateway = pEventData->gateway;
wlan_obj.ip = pEventData->ip;
wlan_obj.dns = pEventData->dns;
}
break;
case SL_NETAPP_IPV6_IPACQUIRED_EVENT:
break;
case SL_NETAPP_IP_LEASED_EVENT:
break;
case SL_NETAPP_IP_RELEASED_EVENT:
break;
default:
break;
}
}
//*****************************************************************************
//
//! \brief This function handles HTTP server events
//!
//! \param[in] pServerEvent - Contains the relevant event information
//! \param[in] pServerResponse - Should be filled by the user with the
//! relevant response information
//!
//! \return None
//!
//****************************************************************************
void SimpleLinkHttpServerCallback(SlHttpServerEvent_t *pHttpEvent, SlHttpServerResponse_t *pHttpResponse) {
if (!pHttpEvent) {
return;
}
switch (pHttpEvent->Event) {
case SL_NETAPP_HTTPGETTOKENVALUE_EVENT:
break;
case SL_NETAPP_HTTPPOSTTOKENVALUE_EVENT:
break;
default:
break;
}
}
//*****************************************************************************
//
//! \brief This function handles General Events
//!
//! \param[in] pDevEvent - Pointer to General Event Info
//!
//! \return None
//!
//*****************************************************************************
void SimpleLinkGeneralEventHandler(SlDeviceEvent_t *pDevEvent) {
if (!pDevEvent) {
return;
}
}
//*****************************************************************************
//
//! This function handles socket events indication
//!
//! \param[in] pSock - Pointer to Socket Event Info
//!
//! \return None
//!
//*****************************************************************************
void SimpleLinkSockEventHandler(SlSockEvent_t *pSock) {
if (!pSock) {
return;
}
switch( pSock->Event ) {
case SL_SOCKET_TX_FAILED_EVENT:
switch( pSock->socketAsyncEvent.SockTxFailData.status) {
case SL_ECLOSE:
break;
default:
break;
}
break;
case SL_SOCKET_ASYNC_EVENT:
switch(pSock->socketAsyncEvent.SockAsyncData.type) {
case SSL_ACCEPT:
break;
case RX_FRAGMENTATION_TOO_BIG:
break;
case OTHER_SIDE_CLOSE_SSL_DATA_NOT_ENCRYPTED:
break;
default:
break;
}
break;
default:
break;
}
}
//*****************************************************************************
// SimpleLink Asynchronous Event Handlers -- End
//*****************************************************************************
__attribute__ ((section (".boot")))
void wlan_pre_init (void) {
// create the wlan lock
ASSERT(OSI_OK == sl_LockObjCreate(&wlan_LockObj, "WlanLock"));
}
void wlan_first_start (void) {
if (wlan_obj.mode < 0) {
wlan_initialize_data();
wlan_obj.mode = sl_Start(0, 0, 0);
sl_LockObjUnlock (&wlan_LockObj);
}
// get the mac address
wlan_get_sl_mac();
}
modwlan_Status_t wlan_sl_enable (SlWlanMode_t mode, const char *ssid, uint8_t ssid_len, uint8_t sec,
const char *key, uint8_t key_len, uint8_t channel) {
if (mode == ROLE_STA || mode == ROLE_AP || mode == ROLE_P2P) {
// stop the servers
wlan_servers_stop();
// do a basic start
wlan_first_start();
// Device in station-mode. Disconnect previous connection if any
// The function returns 0 if 'Disconnected done', negative number if already
// disconnected Wait for 'disconnection' event if 0 is returned, Ignore
// other return-codes
if (0 == sl_WlanDisconnect()) {
while (IS_CONNECTED (wlan_obj.status)) {
HAL_Delay (5);
wlan_update();
}
}
// Remove all profiles
ASSERT_ON_ERROR(sl_WlanProfileDel(0xFF));
// Enable the DHCP client
uint8_t value = 1;
ASSERT_ON_ERROR(sl_NetCfgSet(SL_IPV4_STA_P2P_CL_DHCP_ENABLE, 1, 1, &value));
// Set PM policy to normal
ASSERT_ON_ERROR(sl_WlanPolicySet(SL_POLICY_PM, SL_NORMAL_POLICY, NULL, 0));
// Unregister mDNS services
ASSERT_ON_ERROR(sl_NetAppMDNSUnRegisterService(0, 0));
// Stop the internal HTTP server
sl_NetAppStop(SL_NET_APP_HTTP_SERVER_ID);
// Remove all 64 filters (8 * 8)
_WlanRxFilterOperationCommandBuff_t RxFilterIdMask;
memset ((void *)&RxFilterIdMask, 0 ,sizeof(RxFilterIdMask));
memset(RxFilterIdMask.FilterIdMask, 0xFF, 8);
ASSERT_ON_ERROR(sl_WlanRxFilterSet(SL_REMOVE_RX_FILTER, (_u8 *)&RxFilterIdMask, sizeof(_WlanRxFilterOperationCommandBuff_t)));
// Set Tx power level for station or AP mode
// Number between 0-15, as dB offset from max power - 0 will set max power
uint8_t ucPower = 0;
if (mode == ROLE_AP) {
// Switch to AP mode
ASSERT_ON_ERROR(sl_WlanSetMode(mode));
ASSERT (ssid != NULL && key != NULL);
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_GENERAL_PARAM_ID, WLAN_GENERAL_PARAM_OPT_AP_TX_POWER, sizeof(ucPower),
(unsigned char *)&ucPower));
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SSID, ssid_len, (unsigned char *)ssid));
memcpy(wlan_obj.ssid, (unsigned char *)ssid, ssid_len);
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SECURITY_TYPE, sizeof(uint8_t), &sec));
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_PASSWORD, key_len, (unsigned char *)key));
_u8* country = (_u8*)"EU";
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_GENERAL_PARAM_ID, WLAN_GENERAL_PARAM_OPT_COUNTRY_CODE, 2, country));
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_CHANNEL, 1, (_u8 *)&channel));
// stop and start again
wlan_reenable(mode);
ASSERT (wlan_obj.mode == mode);
SlNetCfgIpV4Args_t ipV4;
ipV4.ipV4 = (_u32)SL_IPV4_VAL(192,168,1,1); // _u32 IP address
ipV4.ipV4Mask = (_u32)SL_IPV4_VAL(255,255,255,0); // _u32 Subnet mask for this AP
ipV4.ipV4Gateway = (_u32)SL_IPV4_VAL(192,168,1,1); // _u32 Default gateway address
ipV4.ipV4DnsServer = (_u32)SL_IPV4_VAL(192,168,1,1); // _u32 DNS server address
ASSERT_ON_ERROR(sl_NetCfgSet(SL_IPV4_AP_P2P_GO_STATIC_ENABLE, IPCONFIG_MODE_ENABLE_IPV4,
sizeof(SlNetCfgIpV4Args_t), (_u8 *)&ipV4));
// stop and start again
wlan_reenable(mode);
SlNetAppDhcpServerBasicOpt_t dhcpParams;
dhcpParams.lease_time = 4096; // lease time (in seconds) of the IP Address
dhcpParams.ipv4_addr_start = SL_IPV4_VAL(192,168,1,2); // first IP Address for allocation.
dhcpParams.ipv4_addr_last = SL_IPV4_VAL(192,168,1,254); // last IP Address for allocation.
ASSERT_ON_ERROR(sl_NetAppStop(SL_NET_APP_DHCP_SERVER_ID)); // Stop DHCP server before settings
ASSERT_ON_ERROR(sl_NetAppSet(SL_NET_APP_DHCP_SERVER_ID, NETAPP_SET_DHCP_SRV_BASIC_OPT,
sizeof(SlNetAppDhcpServerBasicOpt_t), (_u8* )&dhcpParams)); // set parameters
ASSERT_ON_ERROR(sl_NetAppStart(SL_NET_APP_DHCP_SERVER_ID)); // Start DHCP server with new settings
// stop and start again
wlan_reenable(mode);
// save the security type
wlan_obj.security = sec;
}
// STA and P2P modes
else {
ASSERT_ON_ERROR(sl_WlanSet(SL_WLAN_CFG_GENERAL_PARAM_ID, WLAN_GENERAL_PARAM_OPT_STA_TX_POWER,
sizeof(ucPower), (unsigned char *)&ucPower));
ASSERT_ON_ERROR(sl_WlanSetMode(mode));
// stop and start again
wlan_reenable(mode);
// set connection policy to Auto + Fast (tries to connect to the last connected AP)
ASSERT_ON_ERROR(sl_WlanPolicySet(SL_POLICY_CONNECTION,SL_CONNECTION_POLICY(1, 1, 0, 0, 0), NULL, 0));
}
// start the servers before returning
wlan_servers_start();
return MODWLAN_OK;
}
return MODWLAN_ERROR_INVALID_PARAMS;
}
void wlan_update(void) {
#ifndef SL_PLATFORM_MULTI_THREADED
_SlTaskEntry();
#endif
}
void wlan_stop (uint32_t timeout) {
wlan_servers_stop();
sl_LockObjLock (&wlan_LockObj, SL_OS_WAIT_FOREVER);
sl_Stop(timeout);
wlan_obj.mode = -1;
}
void wlan_start (void) {
wlan_obj.mode = sl_Start(0, 0, 0);
sl_LockObjUnlock (&wlan_LockObj);
wlan_servers_start();
}
void wlan_get_mac (uint8_t *macAddress) {
if (macAddress) {
memcpy (macAddress, wlan_obj.mac, SL_MAC_ADDR_LEN);
}
}
void wlan_get_ip (uint32_t *ip) {
if (ip) {
*ip = IS_IP_ACQUIRED(wlan_obj.status) ? wlan_obj.ip : 0;
}
}
//*****************************************************************************
// DEFINE STATIC FUNCTIONS
//*****************************************************************************
STATIC void wlan_initialize_data (void) {
wlan_obj.status = 0;
wlan_obj.dns = 0;
wlan_obj.gateway = 0;
wlan_obj.ip = 0;
wlan_obj.security = SL_SEC_TYPE_OPEN;
wlan_obj.staconnected = 0;
memset(wlan_obj.ssid, 0, sizeof(wlan_obj.ssid));
memset(wlan_obj.bssid, 0, sizeof(wlan_obj.bssid));
}
STATIC void wlan_reenable (SlWlanMode_t mode) {
// stop and start again
sl_LockObjLock (&wlan_LockObj, SL_OS_WAIT_FOREVER);
sl_Stop(SL_STOP_TIMEOUT);
wlan_initialize_data();
wlan_obj.mode = sl_Start(0, 0, 0);
sl_LockObjUnlock (&wlan_LockObj);
ASSERT (wlan_obj.mode == mode);
}
STATIC void wlan_servers_start (void) {
#if (MICROPY_PORT_HAS_TELNET || MICROPY_PORT_HAS_FTP)
// start the servers if they were enabled before
if (wlan_obj.servers_enabled) {
servers_start();
}
#endif
}
STATIC void wlan_servers_stop (void) {
#if (MICROPY_PORT_HAS_TELNET || MICROPY_PORT_HAS_FTP)
// Stop all other processes using the wlan engine
if ((wlan_obj.servers_enabled = servers_are_enabled())) {
servers_stop();
}
#endif
}
STATIC modwlan_Status_t wlan_do_connect (const char* ssid, uint32_t ssid_len, const char* bssid, uint8_t sec,
const char* key, uint32_t key_len) {
SlSecParams_t secParams;
secParams.Key = (_i8*)key;
secParams.KeyLen = ((key != NULL) ? key_len : 0);
secParams.Type = sec;
if (0 == sl_WlanConnect((_i8*)ssid, ssid_len, (_u8*)bssid, &secParams, NULL)) {
// Wait for the WLAN Event
uint32_t waitForConnectionMs = 0;
while (!IS_CONNECTED(wlan_obj.status)) {
HAL_Delay (5);
wlan_update();
if (++waitForConnectionMs >= MODWLAN_TIMEOUT_MS) {
return MODWLAN_ERROR_TIMEOUT;
}
}
return MODWLAN_OK;
}
return MODWLAN_ERROR_INVALID_PARAMS;
}
STATIC void wlan_get_sl_mac (void) {
// Get the MAC address
uint8_t macAddrLen = SL_MAC_ADDR_LEN;
sl_NetCfgGet(SL_MAC_ADDRESS_GET, NULL, &macAddrLen, wlan_obj.mac);
}
/// \method init(mode, ssid=myWlan, security=wlan.WPA_WPA2, key=myWlanKey)
///
/// Initialise the UART bus with the given parameters:
///
/// - `mode` can be ROLE_AP, ROLE_STA and ROLE_P2P.
/// - `ssid` is the network ssid in case of AP mode
/// - `security` is the security type for AP mode
/// - `key` is the key when in AP mode
/// - `channel` is the channel to use for the AP network
STATIC const mp_arg_t wlan_init_args[] = {
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = ROLE_STA} },
{ MP_QSTR_ssid, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_security, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = SL_SEC_TYPE_OPEN} },
{ MP_QSTR_key, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_channel, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5} },
};
STATIC mp_obj_t wlan_init_helper(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(wlan_init_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(wlan_init_args), wlan_init_args, args);
// get the ssid
mp_uint_t ssid_len;
const char *ssid = mp_obj_str_get_data(args[1].u_obj, &ssid_len);
// get the key
mp_uint_t key_len;
const char *key = mp_obj_str_get_data(args[3].u_obj, &key_len);
if (key_len < 8) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
// Force the channel to be between 1-11
uint8_t channel = args[4].u_int > 0 ? args[4].u_int % 12 : 1;
if (MODWLAN_OK != wlan_sl_enable (args[0].u_int, ssid, ssid_len, args[2].u_int, key, key_len, channel)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
return mp_const_none;
}
STATIC void wlan_lpds_callback_enable (mp_obj_t self_in) {
mp_obj_t _callback = mpcallback_find(self_in);
pybsleep_set_wlan_lpds_callback (_callback);
}
STATIC void wlan_lpds_callback_disable (mp_obj_t self_in) {
pybsleep_set_wlan_lpds_callback (NULL);
}
STATIC bool wlan_scan_result_is_unique (const mp_obj_list_t *nets, _u8 *bssid) {
for (int i = 0; i < nets->len; i++) {
// index 1 in the list is the bssid
mp_obj_str_t *_bssid = (mp_obj_str_t *)((mp_obj_tuple_t *)nets->items[i])->items[1];
if (!memcmp (_bssid->data, bssid, SL_BSSID_LENGTH)) {
return false;
}
}
return true;
}
/******************************************************************************/
// Micro Python bindings; WLAN class
/// \class WLAN - driver for the WLAN functionality of the SoC
/// \classmethod \constructor()
/// Create a wlan obecjt and initialise the simplelink engine
//
STATIC mp_obj_t wlan_make_new (mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
// check arguments
mp_arg_check_num(n_args, n_kw, 0, MP_ARRAY_SIZE(wlan_init_args), true);
if (n_args > 0) {
// Get the mode
SlWlanMode_t mode = mp_obj_get_int(args[0]);
if (mode == ROLE_AP) {
// start the peripheral
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
wlan_init_helper(n_args, args, &kw_args);
}
// TODO: Only STA mode supported for the moment. What if P2P?
else if (n_args == 1) {
if (MODWLAN_OK != wlan_sl_enable (mode, NULL, 0, 0, NULL, 0, 0)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
}
else {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, mpexception_num_type_invalid_arguments));
}
} else if (wlan_obj.mode < 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, mpexception_num_type_invalid_arguments));
}
wlan_obj.base.type = (mp_obj_type_t*)&mod_network_nic_type_wlan;
// register with the network module
mod_network_register_nic(&wlan_obj);
return &wlan_obj;
}
STATIC void wlan_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
wlan_obj_t *self = self_in;
mp_printf(print, "<WLAN, mode=%u", self->mode);
// only print the bssid if in station mode
if (self->mode != ROLE_AP && GET_STATUS_BIT(self->status, STATUS_BIT_CONNECTION)) {
mp_printf(print, ", connected to: ssid=%s, bssid=%02x:%02x:%02x:%02x:%02x:%02x", self->ssid,
self->bssid[0], self->bssid[1], self->bssid[2], self->bssid[3], self->bssid[4], self->bssid[5]);
}
else {
mp_printf(print, ", ssid=%s", self->ssid);
}
mp_printf(print, ", security=%u>", self->security);
}
/// \method connect(ssid, security=OPEN, key=None, bssid=None)
// if security is WPA/WPA2, the key must be a string
/// if security is WEP, the key must be binary
STATIC mp_obj_t wlan_connect(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC const mp_arg_t allowed_args[] = {
{ MP_QSTR_ssid, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_security, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = SL_SEC_TYPE_OPEN} },
{ MP_QSTR_key, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_bssid, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
};
// check for correct wlan mode
if (wlan_obj.mode != ROLE_STA && wlan_obj.mode != ROLE_P2P) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
}
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
// get the ssid
mp_uint_t ssid_len;
const char *ssid = mp_obj_str_get_data(args[0].u_obj, &ssid_len);
// get the security type
mp_uint_t sec = args[1].u_int;
// get key and its len
mp_uint_t key_len = 0;
const char *key = NULL;
mp_buffer_info_t wepkey;
if (args[2].u_obj != mp_const_none) {
// wep key must be given as raw bytes
if (sec == SL_SEC_TYPE_WEP) {
mp_get_buffer_raise(args[2].u_obj, &wepkey, MP_BUFFER_READ);
key = wepkey.buf;
key_len = wepkey.len;
}
else {
key = mp_obj_str_get_data(args[2].u_obj, &key_len);
}
}
// get bssid
const char *bssid = NULL;
if (args[3].u_obj != mp_const_none) {
bssid = mp_obj_str_get_str(args[3].u_obj);
}
if (GET_STATUS_BIT(wlan_obj.status, STATUS_BIT_CONNECTION)) {
if (0 == sl_WlanDisconnect()) {
while (IS_CONNECTED(wlan_obj.status)) {
HAL_Delay (5);
wlan_update();
}
}
}
// connect to the requested access point
modwlan_Status_t status;
status = wlan_do_connect (ssid, ssid_len, bssid, sec, key, key_len);
if (status == MODWLAN_ERROR_TIMEOUT) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
else if (status == MODWLAN_ERROR_INVALID_PARAMS) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
wlan_obj.security = sec;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(wlan_connect_obj, 1, wlan_connect);
/// \method wlan_disconnect()
/// Close the current WLAN connection
STATIC mp_obj_t wlan_disconnect(mp_obj_t self_in) {
sl_WlanDisconnect();
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wlan_disconnect_obj, wlan_disconnect);
/// \method is_connected()
/// Return true if connected to the AP and an IP address has been assigned. Also true if there's any station connected.
/// false otherwise.
STATIC mp_obj_t wlan_isconnected(mp_obj_t self_in) {
if ((GET_STATUS_BIT(wlan_obj.status, STATUS_BIT_CONNECTION) &&
GET_STATUS_BIT(wlan_obj.status, STATUS_BIT_IP_ACQUIRED)) || (wlan_obj.staconnected > 0)) {
return mp_const_true;
}
return mp_const_false;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wlan_isconnected_obj, wlan_isconnected);
STATIC mp_obj_t wlan_ifconfig (mp_obj_t self_in) {
unsigned char len = sizeof(SlNetCfgIpV4Args_t);
unsigned char dhcpIsOn;
SlNetCfgIpV4Args_t ipV4;
sl_NetCfgGet(SL_IPV4_STA_P2P_CL_GET_INFO, &dhcpIsOn, &len, (uint8_t *)&ipV4);
mp_obj_t ifconfig = mp_obj_new_dict(0);
mp_obj_dict_store (ifconfig, mp_obj_new_str("ip", strlen("ip"), false), mod_network_format_ipv4_addr((uint8_t *)&wlan_obj.ip));
mp_obj_dict_store (ifconfig, mp_obj_new_str("subnet", strlen("subnet"), false), mod_network_format_ipv4_addr((uint8_t *)&ipV4.ipV4Mask));
mp_obj_dict_store (ifconfig, mp_obj_new_str("gateway", strlen("gateway"), false), mod_network_format_ipv4_addr((uint8_t *)&wlan_obj.gateway));
mp_obj_dict_store (ifconfig, mp_obj_new_str("dns", strlen("dns"), false), mod_network_format_ipv4_addr((uint8_t *)&wlan_obj.dns));
char mac_str[18];
mp_uint_t mac_len = snprintf(mac_str, sizeof(mac_str), "%02x:%02x:%02x:%02x:%02x:%02x", wlan_obj.mac[0], wlan_obj.mac[1], wlan_obj.mac[2],
wlan_obj.mac[3], wlan_obj.mac[4], wlan_obj.mac[5]);
mp_obj_dict_store (ifconfig, mp_obj_new_str("mac", strlen("mac"), false), mp_obj_new_str(mac_str, mac_len, false));
char *mode_str;
if (wlan_obj.mode == ROLE_STA) {
mode_str = "station";
}
else if (wlan_obj.mode == ROLE_AP) {
mode_str = "ap";
}
else {
mode_str = "p2p";
}
mp_obj_dict_store (ifconfig, mp_obj_new_str("mode", strlen("mode"), false), mp_obj_new_str(mode_str, strlen(mode_str), false));
mp_obj_dict_store (ifconfig, mp_obj_new_str("ssid", strlen("ssid"), false), mp_obj_new_str((const char *)wlan_obj.ssid, strlen((const char *)wlan_obj.ssid), false));
return ifconfig;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wlan_ifconfig_obj, wlan_ifconfig);
STATIC mp_obj_t wlan_urn (uint n_args, const mp_obj_t *args) {
char urn[MAX_DEVICE_URN_LEN];
uint8_t len = MAX_DEVICE_URN_LEN;
// an URN is given, so set it
if (n_args == 2) {
const char *p = mp_obj_str_get_str(args[1]);
uint8_t len = strlen(p);
// the call to sl_NetAppSet corrupts the input string URN=args[1], so we copy into a local buffer
if (len > MAX_DEVICE_URN_LEN) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
strcpy(urn, p);
if (sl_NetAppSet(SL_NET_APP_DEVICE_CONFIG_ID, NETAPP_SET_GET_DEV_CONF_OPT_DEVICE_URN, len, (unsigned char *)urn) < 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
}
else {
// get the URN
if (sl_NetAppGet(SL_NET_APP_DEVICE_CONFIG_ID, NETAPP_SET_GET_DEV_CONF_OPT_DEVICE_URN, &len, (uint8_t *)urn) < 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
return mp_obj_new_str(urn, (len - 1), false);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(wlan_urn_obj, 1, 2, wlan_urn);
/// \method wlan_netlist()
/// Return a list of tuples with all the acces points within range
STATIC mp_obj_t wlan_scan(mp_obj_t self_in) {
STATIC const qstr wlan_scan_info_fields[] = {
MP_QSTR_ssid, MP_QSTR_bssid,
MP_QSTR_security, MP_QSTR_channel, MP_QSTR_rssi
};
Sl_WlanNetworkEntry_t wlanEntry;
uint8_t _index = 0;
mp_obj_t nets = NULL;
// trigger a new network scan
uint32_t scanSeconds = MODWLAN_SCAN_PERIOD_S;
ASSERT_ON_ERROR(sl_WlanPolicySet(SL_POLICY_SCAN , MODWLAN_SL_SCAN_ENABLE, (_u8 *)&scanSeconds, sizeof(scanSeconds)));
// wait for the scan to complete
HAL_Delay (MODWLAN_WAIT_FOR_SCAN_MS);
do {
if (sl_WlanGetNetworkList(_index++, 1, &wlanEntry) <= 0) {
break;
}
if (_index == 1) {
// initialize the list
nets = mp_obj_new_list(0, NULL);
}
// we must skip any duplicated results
else if (!wlan_scan_result_is_unique(nets, wlanEntry.bssid)) {
continue;
}
mp_obj_t tuple[5];
tuple[0] = mp_obj_new_str((const char *)wlanEntry.ssid, wlanEntry.ssid_len, false);
tuple[1] = mp_obj_new_bytes((const byte *)wlanEntry.bssid, SL_BSSID_LENGTH);
// 'normalize' the security type
if (wlanEntry.sec_type > 2) {
wlanEntry.sec_type = 2;
}
tuple[2] = mp_obj_new_int(wlanEntry.sec_type);
tuple[3] = mp_const_none;
tuple[4] = mp_obj_new_int(wlanEntry.rssi);
// add the network to the list
mp_obj_list_append(nets, mp_obj_new_attrtuple(wlan_scan_info_fields, 5, tuple));
} while (_index < MODWLAN_SL_MAX_NETWORKS);
return (nets != NULL) ? nets : mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(wlan_scan_obj, wlan_scan);
/// \method callback(handler, pwrmode)
/// Create a callback object associated with WLAN
/// min num of arguments is 1 (pwrmode)
STATIC mp_obj_t wlan_callback (mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
mp_arg_val_t args[mpcallback_INIT_NUM_ARGS];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, mpcallback_INIT_NUM_ARGS, mpcallback_init_args, args);
wlan_obj_t *self = pos_args[0];
mp_obj_t _callback = mpcallback_find(self);
// check if any parameters were passed
if (kw_args->used > 0 || !_callback) {
// check the power mode
if (args[4].u_int != PYB_PWR_MODE_LPDS) {
// throw an exception since WLAN only supports LPDS mode
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
// create the callback
_callback = mpcallback_new (self, args[1].u_obj, &wlan_cb_methods);
// enable network wakeup
pybsleep_set_wlan_lpds_callback (_callback);
}
return _callback;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(wlan_callback_obj, 1, wlan_callback);
/// \method config_ip(mode, *, ip='192.168.1.1', subnet='255.255.255.0', gateway='192.168.1.1', dns='8.8.8.8')
STATIC mp_obj_t wlan_config_ip (mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC const mp_arg_t allowed_args[] = {
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = MODWLAN_IP_MODE_DYNAMIC} },
{ MP_QSTR_ip, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_subnet, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_gateway, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_dns, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
};
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
if (args[0].u_int == MODWLAN_IP_MODE_DYNAMIC) {
// only mode must be given
if (args[1].u_obj || args[2].u_obj || args[3].u_obj || args[4].u_obj) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, mpexception_num_type_invalid_arguments));
}
wlan_servers_stop();
// nothing to do if we are an access point
if (wlan_obj.mode != ROLE_AP) {
_u8 val = 1;
sl_NetCfgSet(SL_IPV4_STA_P2P_CL_DHCP_ENABLE, IPCONFIG_MODE_ENABLE_IPV4, 1, &val);
wlan_reenable (wlan_obj.mode);
}
}
else {
// we need all arguments at this point
if (!args[1].u_obj || !args[2].u_obj || !args[3].u_obj || !args[4].u_obj) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, mpexception_num_type_invalid_arguments));
}
SlNetCfgIpV4Args_t ipV4;
mod_network_parse_ipv4_addr(args[1].u_obj, (uint8_t *)&ipV4.ipV4);
mod_network_parse_ipv4_addr(args[2].u_obj, (uint8_t *)&ipV4.ipV4Mask);
mod_network_parse_ipv4_addr(args[3].u_obj, (uint8_t *)&ipV4.ipV4Gateway);
mod_network_parse_ipv4_addr(args[4].u_obj, (uint8_t *)&ipV4.ipV4DnsServer);
wlan_servers_stop();
if (wlan_obj.mode == ROLE_AP) {
ASSERT_ON_ERROR(sl_NetCfgSet(SL_IPV4_AP_P2P_GO_STATIC_ENABLE, IPCONFIG_MODE_ENABLE_IPV4, sizeof(SlNetCfgIpV4Args_t), (_u8 *)&ipV4));
// stop and start again
wlan_reenable(wlan_obj.mode);
SlNetAppDhcpServerBasicOpt_t dhcpParams;
dhcpParams.lease_time = 4096; // lease time (in seconds) of the IP Address
dhcpParams.ipv4_addr_start = ipV4.ipV4 + 1; // first IP Address for allocation.
dhcpParams.ipv4_addr_last = (ipV4.ipV4 & 0xFFFFFF00) + 254; // last IP Address for allocation.
ASSERT_ON_ERROR(sl_NetAppStop(SL_NET_APP_DHCP_SERVER_ID)); // stop DHCP server before settings
ASSERT_ON_ERROR(sl_NetAppSet(SL_NET_APP_DHCP_SERVER_ID, NETAPP_SET_DHCP_SRV_BASIC_OPT,
sizeof(SlNetAppDhcpServerBasicOpt_t), (_u8* )&dhcpParams)); // set parameters
ASSERT_ON_ERROR(sl_NetAppStart(SL_NET_APP_DHCP_SERVER_ID)); // start DHCP server with new settings
}
else {
ASSERT_ON_ERROR(sl_NetCfgSet(SL_IPV4_STA_P2P_CL_STATIC_ENABLE, IPCONFIG_MODE_ENABLE_IPV4, sizeof(SlNetCfgIpV4Args_t), (_u8 *)&ipV4));
}
wlan_reenable (wlan_obj.mode);
}
wlan_servers_start();
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(wlan_config_ip_obj, 1, wlan_config_ip);
STATIC const mp_map_elem_t wlan_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&wlan_connect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&wlan_scan_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_disconnect), (mp_obj_t)&wlan_disconnect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_isconnected), (mp_obj_t)&wlan_isconnected_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_ifconfig), (mp_obj_t)&wlan_ifconfig_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_urn), (mp_obj_t)&wlan_urn_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_callback), (mp_obj_t)&wlan_callback_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_config_ip), (mp_obj_t)&wlan_config_ip_obj },
// class constants
{ MP_OBJ_NEW_QSTR(MP_QSTR_OPEN), MP_OBJ_NEW_SMALL_INT(SL_SEC_TYPE_OPEN) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_WEP), MP_OBJ_NEW_SMALL_INT(SL_SEC_TYPE_WEP) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_WPA_WPA2), MP_OBJ_NEW_SMALL_INT(SL_SEC_TYPE_WPA_WPA2) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_WPA_ENT), MP_OBJ_NEW_SMALL_INT(SL_SEC_TYPE_WPA_ENT) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_WPS_PBC), MP_OBJ_NEW_SMALL_INT(SL_SEC_TYPE_WPS_PBC) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_WPS_PIN), MP_OBJ_NEW_SMALL_INT(SL_SEC_TYPE_WPS_PIN) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_STA), MP_OBJ_NEW_SMALL_INT(ROLE_STA) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_AP), MP_OBJ_NEW_SMALL_INT(ROLE_AP) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_P2P), MP_OBJ_NEW_SMALL_INT(ROLE_P2P) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_DYNAMIC), MP_OBJ_NEW_SMALL_INT(MODWLAN_IP_MODE_DYNAMIC) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_STATIC), MP_OBJ_NEW_SMALL_INT(MODWLAN_IP_MODE_STATIC) },
};
STATIC MP_DEFINE_CONST_DICT(wlan_locals_dict, wlan_locals_dict_table);
STATIC const mp_cb_methods_t wlan_cb_methods = {
.init = wlan_callback,
.enable = wlan_lpds_callback_enable,
.disable = wlan_lpds_callback_disable,
};
/******************************************************************************/
// Micro Python bindings; WLAN socket
STATIC int wlan_gethostbyname(mp_obj_t nic, const char *name, mp_uint_t len, uint8_t *out_ip, uint8_t family) {
uint32_t ip;
int result = sl_NetAppDnsGetHostByName((_i8 *)name, (_u16)len, (_u32*)&ip, (_u8)family);
out_ip[0] = ip;
out_ip[1] = ip >> 8;
out_ip[2] = ip >> 16;
out_ip[3] = ip >> 24;
return result;
}
STATIC int wlan_socket_socket(struct _mod_network_socket_obj_t *s, int *_errno) {
// open the socket
int16_t sd = sl_Socket(s->u_param.domain, s->u_param.type, s->u_param.proto);
if (s->sd < 0) {
*_errno = s->sd;
return -1;
}
// mark the socket not closed
s->closed = false;
// save the socket descriptor
s->sd = sd;
// make it blocking by default
int32_t optval = 0;
sl_SetSockOpt(sd, SOL_SOCKET, SO_NONBLOCKING, &optval, (SlSocklen_t)sizeof(optval));
return 0;
}
STATIC void wlan_socket_close(mod_network_socket_obj_t *s) {
s->closed = true;
sl_Close(s->sd);
}
STATIC int wlan_socket_bind(mod_network_socket_obj_t *s, byte *ip, mp_uint_t port, int *_errno) {
MAKE_SOCKADDR(addr, ip, port)
int ret = sl_Bind(s->sd, &addr, sizeof(addr));
if (ret != 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int wlan_socket_listen(mod_network_socket_obj_t *s, mp_int_t backlog, int *_errno) {
int ret = sl_Listen(s->sd, backlog);
if (ret != 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int wlan_socket_accept(mod_network_socket_obj_t *s, mod_network_socket_obj_t *s2, byte *ip, mp_uint_t *port, int *_errno) {
// accept incoming connection
int16_t sd;
sockaddr addr;
socklen_t addr_len = sizeof(addr);
if ((sd = sl_Accept(s->sd, &addr, &addr_len)) < 0) {
*_errno = sd;
return -1;
}
// Mark the socket not closed and save the new descriptor
s2->closed = false;
s2->sd = sd;
// return ip and port
UNPACK_SOCKADDR(addr, ip, *port);
return 0;
}
STATIC int wlan_socket_connect(mod_network_socket_obj_t *s, byte *ip, mp_uint_t port, int *_errno) {
MAKE_SOCKADDR(addr, ip, port)
int ret = sl_Connect(s->sd, &addr, sizeof(addr));
if (ret != 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int wlan_socket_send(mod_network_socket_obj_t *s, const byte *buf, mp_uint_t len, int *_errno) {
if (s->closed) {
sl_Close (s->sd);
*_errno = EBADF;
return -1;
}
mp_int_t bytes = 0;
if (len > 0) {
bytes = sl_Send(s->sd, (const void *)buf, len, 0);
}
if (bytes <= 0) {
*_errno = bytes;
return -1;
}
return bytes;
}
STATIC int wlan_socket_recv(mod_network_socket_obj_t *s, byte *buf, mp_uint_t len, int *_errno) {
// check if the socket is open
if (s->closed) {
// socket is closed, but the CC3200 may have some data remaining in its buffer, so check
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(s->sd, &rfds);
timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 2;
int nfds = sl_Select(s->sd + 1, &rfds, NULL, NULL, &tv);
if (nfds == -1 || !FD_ISSET(s->sd, &rfds)) {
// no data waiting, so close socket and return 0 data
sl_Close(s->sd);
return 0;
}
}
// cap length at WLAN_MAX_RX_SIZE
len = MIN(len, WLAN_MAX_RX_SIZE);
// do the recv
int ret = sl_Recv(s->sd, buf, len, 0);
if (ret < 0) {
*_errno = ret;
return -1;
}
return ret;
}
STATIC int wlan_socket_sendto( mod_network_socket_obj_t *s, const byte *buf, mp_uint_t len, byte *ip, mp_uint_t port, int *_errno) {
MAKE_SOCKADDR(addr, ip, port)
int ret = sl_SendTo(s->sd, (byte*)buf, len, 0, (sockaddr*)&addr, sizeof(addr));
if (ret < 0) {
*_errno = ret;
return -1;
}
return ret;
}
STATIC int wlan_socket_recvfrom(mod_network_socket_obj_t *s, byte *buf, mp_uint_t len, byte *ip, mp_uint_t *port, int *_errno) {
sockaddr addr;
socklen_t addr_len = sizeof(addr);
mp_int_t ret = sl_RecvFrom(s->sd, buf, len, 0, &addr, &addr_len);
if (ret < 0) {
*_errno = ret;
return -1;
}
UNPACK_SOCKADDR(addr, ip, *port);
return ret;
}
STATIC int wlan_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) {
int ret = sl_SetSockOpt(socket->sd, level, opt, optval, optlen);
if (ret < 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int wlan_socket_settimeout(mod_network_socket_obj_t *s, mp_uint_t timeout_ms, int *_errno) {
int ret;
if (timeout_ms == 0 || timeout_ms == -1) {
int optval;
if (timeout_ms == 0) {
// set non-blocking mode
optval = 1;
} else {
// set blocking mode
optval = 0;
}
ret = sl_SetSockOpt(s->sd, SOL_SOCKET, SO_NONBLOCKING, &optval, sizeof(optval));
} else {
// set timeout
ret = sl_SetSockOpt(s->sd, SOL_SOCKET, SO_RCVTIMEO, &timeout_ms, sizeof(timeout_ms));
}
if (ret != 0) {
*_errno = ret;
return -1;
}
return 0;
}
STATIC int wlan_socket_ioctl (mod_network_socket_obj_t *s, mp_uint_t request, mp_uint_t arg, int *_errno) {
mp_int_t ret;
if (request == MP_IOCTL_POLL) {
mp_uint_t flags = arg;
ret = 0;
int32_t sd = s->sd;
// init fds
fd_set rfds, wfds, xfds;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&xfds);
// set fds if needed
if (flags & MP_IOCTL_POLL_RD) {
FD_SET(sd, &rfds);
// A socked that just closed is available for reading. A call to
// recv() returns 0 which is consistent with BSD.
if (s->closed) {
ret |= MP_IOCTL_POLL_RD;
}
}
if (flags & MP_IOCTL_POLL_WR) {
FD_SET(sd, &wfds);
}
if (flags & MP_IOCTL_POLL_HUP) {
FD_SET(sd, &xfds);
}
// call simplelink select with minimum timeout
SlTimeval_t tv;
tv.tv_sec = 0;
tv.tv_usec = 1;
int32_t nfds = sl_Select(sd + 1, &rfds, &wfds, &xfds, &tv);
// check for error
if (nfds == -1) {
*_errno = nfds;
return -1;
}
// check return of select
if (FD_ISSET(sd, &rfds)) {
ret |= MP_IOCTL_POLL_RD;
}
if (FD_ISSET(sd, &wfds)) {
ret |= MP_IOCTL_POLL_WR;
}
if (FD_ISSET(sd, &xfds)) {
ret |= MP_IOCTL_POLL_HUP;
}
} else {
*_errno = EINVAL;
ret = -1;
}
return ret;
}
const mod_network_nic_type_t mod_network_nic_type_wlan = {
.base = {
{ &mp_type_type },
.name = MP_QSTR_WLAN,
.print = wlan_print,
.make_new = wlan_make_new,
.locals_dict = (mp_obj_t)&wlan_locals_dict,
},
.gethostbyname = wlan_gethostbyname,
.socket = wlan_socket_socket,
.close = wlan_socket_close,
.bind = wlan_socket_bind,
.listen = wlan_socket_listen,
.accept = wlan_socket_accept,
.connect = wlan_socket_connect,
.send = wlan_socket_send,
.recv = wlan_socket_recv,
.sendto = wlan_socket_sendto,
.recvfrom = wlan_socket_recvfrom,
.setsockopt = wlan_socket_setsockopt,
.settimeout = wlan_socket_settimeout,
.ioctl = wlan_socket_ioctl,
};
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