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drivers: Add driver for CYW43xx WiFi SoCs.

pull/4831/head
Damien George 6 years ago
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  1. 17
      drivers/cyw43/README.md
  2. 135
      drivers/cyw43/cyw43.h
  3. 588
      drivers/cyw43/cyw43_ctrl.c
  4. 135
      drivers/cyw43/cyw43_ll.h
  5. 197
      drivers/cyw43/cyw43_lwip.c
  6. BIN
      drivers/cyw43/libcyw43.a

17
drivers/cyw43/README.md
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CYW43xx WiFi SoC driver
=======================
This is a driver for the CYW43xx WiFi SoC.
There are four layers to the driver:
1. SDIO bus interface, provided by the host device/system.
2. Low-level CYW43xx interface, managing the bus, control messages, Ethernet
frames and asynchronous events. Includes download of SoC firmware. The
header file `cyw43_ll.h` defines the interface to this layer.
3. Mid-level CYW43xx control, to control and set WiFi parameters and manage
events. See `cyw43_ctrl.c`.
4. TCP/IP bindings to lwIP. See `cyw43_lwip.c`.

135
drivers/cyw43/cyw43.h
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018-2019 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.
*/
#ifndef MICROPY_INCLUDED_STM32_CYW43_H
#define MICROPY_INCLUDED_STM32_CYW43_H
#include "lwip/netif.h"
#include "lwip/dhcp.h"
#include "lib/netutils/dhcpserver.h"
#include "drivers/cyw43/cyw43_ll.h"
// For trace_flags
#define CYW43_TRACE_ASYNC_EV (0x0001)
#define CYW43_TRACE_ETH_TX (0x0002)
#define CYW43_TRACE_ETH_RX (0x0004)
#define CYW43_TRACE_ETH_FULL (0x0008)
#define CYW43_TRACE_MAC (0x0010)
// Return value of cyw43_wifi_link_status
#define CYW43_LINK_DOWN (0)
#define CYW43_LINK_JOIN (1)
#define CYW43_LINK_NOIP (2)
#define CYW43_LINK_UP (3)
#define CYW43_LINK_FAIL (-1)
#define CYW43_LINK_NONET (-2)
#define CYW43_LINK_BADAUTH (-3)
typedef struct _cyw43_t {
cyw43_ll_t cyw43_ll;
uint8_t itf_state;
uint32_t trace_flags;
// State for async events
volatile uint32_t wifi_scan_state;
uint32_t wifi_join_state;
void *wifi_scan_env;
int (*wifi_scan_cb)(void*, const cyw43_ev_scan_result_t*);
// Pending things to do
bool pend_disassoc;
bool pend_rejoin;
bool pend_rejoin_wpa;
// AP settings
uint8_t ap_channel;
uint8_t ap_auth;
uint8_t ap_ssid_len;
uint8_t ap_key_len;
uint8_t ap_ssid[32];
uint8_t ap_key[64];
// lwIP data
struct netif netif[2];
struct dhcp dhcp_client;
dhcp_server_t dhcp_server;
} cyw43_t;
extern cyw43_t cyw43_state;
extern void (*cyw43_poll)(void);
extern uint32_t cyw43_sleep;
void cyw43_init(cyw43_t *self);
void cyw43_deinit(cyw43_t *self);
int cyw43_ioctl(cyw43_t *self, uint32_t cmd, size_t len, uint8_t *buf, uint32_t iface);
int cyw43_send_ethernet(cyw43_t *self, int itf, size_t len, const void *buf, bool is_pbuf);
int cyw43_wifi_pm(cyw43_t *self, uint32_t pm);
int cyw43_wifi_link_status(cyw43_t *self, int itf);
void cyw43_wifi_set_up(cyw43_t *self, int itf, bool up);
int cyw43_wifi_get_mac(cyw43_t *self, int itf, uint8_t mac[6]);
int cyw43_wifi_scan(cyw43_t *self, cyw43_wifi_scan_options_t *opts, void *env, int (*result_cb)(void*, const cyw43_ev_scan_result_t*));
static inline bool cyw43_wifi_scan_active(cyw43_t *self) {
return self->wifi_scan_state == 1;
}
int cyw43_wifi_join(cyw43_t *self, size_t ssid_len, const uint8_t *ssid, size_t key_len, const uint8_t *key, uint32_t auth_type, const uint8_t *bssid, uint32_t channel);
int cyw43_wifi_leave(cyw43_t *self, int itf);
static inline void cyw43_wifi_ap_get_ssid(cyw43_t *self, size_t *len, const uint8_t **buf) {
*len = self->ap_ssid_len;
*buf = self->ap_ssid;
}
static inline void cyw43_wifi_ap_set_channel(cyw43_t *self, uint32_t channel) {
self->ap_channel = channel;
}
static inline void cyw43_wifi_ap_set_ssid(cyw43_t *self, size_t len, const uint8_t *buf) {
self->ap_ssid_len = MIN(len, sizeof(self->ap_ssid));
memcpy(self->ap_ssid, buf, self->ap_ssid_len);
}
static inline void cyw43_wifi_ap_set_password(cyw43_t *self, size_t len, const uint8_t *buf) {
self->ap_key_len = MIN(len, sizeof(self->ap_key));
memcpy(self->ap_key, buf, self->ap_key_len);
}
static inline void cyw43_wifi_ap_set_auth(cyw43_t *self, uint32_t auth) {
self->ap_auth = auth;
}
void cyw43_wifi_ap_get_stas(cyw43_t *self, int *num_stas, uint8_t *macs);
void cyw43_tcpip_init(cyw43_t *self, int itf);
void cyw43_tcpip_deinit(cyw43_t *self, int itf);
void cyw43_tcpip_set_link_up(cyw43_t *self, int itf);
void cyw43_tcpip_set_link_down(cyw43_t *self, int itf);
int cyw43_tcpip_link_status(cyw43_t *self, int itf);
#endif // MICROPY_INCLUDED_STM32_CYW43_H

588
drivers/cyw43/cyw43_ctrl.c
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018-2019 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 <string.h>
#include "py/mphal.h"
#include "drivers/cyw43/cyw43.h"
#include "pendsv.h"
#include "sdio.h"
#define CYW_ENTER MICROPY_PY_LWIP_ENTER
#define CYW_EXIT MICROPY_PY_LWIP_EXIT
#ifdef pyb_pin_WL_HOST_WAKE
#define USE_SDIOIT (0)
#else
#define USE_SDIOIT (1)
#endif
#define CYW43_SLEEP_MAX (50)
#define WIFI_JOIN_STATE_ACTIVE (0x0001)
#define WIFI_JOIN_STATE_FAIL (0x0002)
#define WIFI_JOIN_STATE_NONET (0x0003)
#define WIFI_JOIN_STATE_BADAUTH (0x0004)
#define WIFI_JOIN_STATE_AUTH (0x0200)
#define WIFI_JOIN_STATE_LINK (0x0400)
#define WIFI_JOIN_STATE_KEYED (0x0800)
#define WIFI_JOIN_STATE_ALL (0x0e01)
cyw43_t cyw43_state;
void (*cyw43_poll)(void);
uint32_t cyw43_sleep;
STATIC void cyw43_poll_func(void);
STATIC void cyw43_wifi_ap_init(cyw43_t *self);
STATIC void cyw43_wifi_ap_set_up(cyw43_t *self, bool up);
static inline uint32_t cyw43_get_be16(const uint8_t *buf) {
return buf[0] << 8 | buf[1];
}
static inline uint32_t cyw43_get_be32(const uint8_t *buf) {
return buf[0] << 24 | buf[1] << 16 | buf[2] << 8 | buf[3];
}
static inline void cyw43_delay_ms(uint32_t ms) {
mp_hal_delay_ms(ms);
}
/*******************************************************************************/
// Initialisation and polling
void cyw43_init(cyw43_t *self) {
#ifdef pyb_pin_WL_HOST_WAKE
mp_hal_pin_config(pyb_pin_WL_HOST_WAKE, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0);
#endif
mp_hal_pin_config(pyb_pin_WL_REG_ON, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_low(pyb_pin_WL_REG_ON);
#ifdef pyb_pin_WL_RFSW_VDD
mp_hal_pin_config(pyb_pin_WL_RFSW_VDD, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0); // RF-switch power
mp_hal_pin_low(pyb_pin_WL_RFSW_VDD);
#endif
cyw43_ll_init(&self->cyw43_ll, self);
self->itf_state = 0;
self->wifi_scan_state = 0;
self->wifi_join_state = 0;
self->pend_disassoc = false;
self->pend_rejoin= false;
self->pend_rejoin_wpa = false;
self->ap_channel = 3;
self->ap_ssid_len = 0;
self->ap_key_len = 0;
cyw43_poll = NULL;
}
void cyw43_deinit(cyw43_t *self) {
CYW_ENTER
cyw43_ll_bus_sleep(&self->cyw43_ll, true);
cyw43_delay_ms(2);
cyw43_tcpip_deinit(self, 0);
cyw43_tcpip_deinit(self, 1);
self->itf_state = 0;
// Disable async polling
SDMMC1->MASK &= ~SDMMC_MASK_SDIOITIE;
cyw43_poll = NULL;
#ifdef pyb_pin_WL_RFSW_VDD
// Turn the RF-switch off
mp_hal_pin_low(pyb_pin_WL_RFSW_VDD);
#endif
// Power down the WL chip and the SDIO bus
mp_hal_pin_low(pyb_pin_WL_REG_ON);
sdio_deinit();
CYW_EXIT
}
STATIC int cyw43_ensure_up(cyw43_t *self) {
if (cyw43_poll != NULL) {
cyw43_ll_bus_sleep(&self->cyw43_ll, false);
return 0;
}
CYW_ENTER
// Disable the netif if it was previously up
cyw43_tcpip_deinit(self, CYW43_ITF_STA);
cyw43_tcpip_deinit(self, CYW43_ITF_AP);
self->itf_state = 0;
// Reset and power up the WL chip
mp_hal_pin_low(pyb_pin_WL_REG_ON);
cyw43_delay_ms(20);
mp_hal_pin_high(pyb_pin_WL_REG_ON);
cyw43_delay_ms(50);
// Initialise SDIO bus
// IRQ priority only needs to be higher than CYW_ENTER/EXIT protection (PENDSV)
sdio_init(NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 14, 0));
// Initialise the low-level driver
uint8_t mac[6];
mp_hal_get_mac(MP_HAL_MAC_WLAN0, mac);
int ret = cyw43_ll_bus_init(&self->cyw43_ll, mac);
if (ret != 0) {
CYW_EXIT
return ret;
}
// Enable async events from low-level driver
cyw43_sleep = CYW43_SLEEP_MAX;
cyw43_poll = cyw43_poll_func;
#if USE_SDIOIT
SDMMC1->MASK |= SDMMC_MASK_SDIOITIE;
#else
extern void extint_set(const pin_obj_t *pin, uint32_t mode);
extint_set(pyb_pin_WL_HOST_WAKE, GPIO_MODE_IT_FALLING);
#endif
CYW_EXIT
return ret;
}
// This function must always be executed at the level where CYW_ENTER is effectively active
STATIC void cyw43_poll_func(void) {
if (cyw43_poll == NULL) {
// Poll scheduled during deinit, just ignore it
return;
}
cyw43_t *self = &cyw43_state;
cyw43_ll_process_packets(&self->cyw43_ll);
if (self->pend_disassoc) {
self->pend_disassoc = false;
cyw43_ll_ioctl(&self->cyw43_ll, CYW43_IOCTL_SET_DISASSOC, 0, NULL, CYW43_ITF_STA);
}
if (self->pend_rejoin_wpa) {
self->pend_rejoin_wpa = false;
cyw43_ll_wifi_set_wpa_auth(&self->cyw43_ll);
}
if (self->pend_rejoin) {
self->pend_rejoin = false;
cyw43_ll_wifi_rejoin(&self->cyw43_ll);
self->wifi_join_state = WIFI_JOIN_STATE_ACTIVE;
}
if (cyw43_sleep == 0) {
cyw43_ll_bus_sleep(&self->cyw43_ll, true);
#if !USE_SDIOIT
sdio_deinit(); // save power while WLAN bus sleeps
#endif
}
#if USE_SDIOIT
SDMMC1->MASK |= SDMMC_MASK_SDIOITIE;
#endif
}
/*******************************************************************************/
// Callback interface to low-level driver
int cyw43_cb_read_host_interrupt_pin(void *cb_data) {
#ifdef pyb_pin_WL_HOST_WAKE
return mp_hal_pin_read(pyb_pin_WL_HOST_WAKE);
#else
return mp_hal_pin_read(pyb_pin_WL_SDIO_1);
#endif
}
void cyw43_cb_ensure_awake(void *cb_data) {
cyw43_sleep = CYW43_SLEEP_MAX;
#if !USE_SDIOIT
if (__HAL_RCC_SDMMC1_IS_CLK_DISABLED()) {
__HAL_RCC_SDMMC1_CLK_ENABLE(); // enable SDIO peripheral
sdio_enable_high_speed_4bit();
}
#endif
}
STATIC const char *cyw43_async_event_name_table[89] = {
[0 ... 88] = NULL,
[CYW43_EV_SET_SSID] = "SET_SSID",
[CYW43_EV_JOIN] = "JOIN",
[CYW43_EV_AUTH] = "AUTH",
[CYW43_EV_DEAUTH_IND] = "DEAUTH_IND",
[CYW43_EV_ASSOC] = "ASSOC",
[CYW43_EV_DISASSOC] = "DISASSOC",
[CYW43_EV_DISASSOC_IND] = "DISASSOC_IND",
[CYW43_EV_LINK] = "LINK",
[CYW43_EV_PSK_SUP] = "PSK_SUP",
[CYW43_EV_ESCAN_RESULT] = "ESCAN_RESULT",
[CYW43_EV_CSA_COMPLETE_IND] = "CSA_COMPLETE_IND",
[CYW43_EV_ASSOC_REQ_IE] = "ASSOC_REQ_IE",
[CYW43_EV_ASSOC_RESP_IE] = "ASSOC_RESP_IE",
};
STATIC void cyw43_dump_async_event(const cyw43_async_event_t *ev) {
printf("[% 8d] ASYNC(%04x,",
mp_hal_ticks_ms(),
(unsigned int)ev->flags
);
if (ev->event_type < MP_ARRAY_SIZE(cyw43_async_event_name_table)
&& cyw43_async_event_name_table[ev->event_type] != NULL) {
printf("%s", cyw43_async_event_name_table[ev->event_type]);
} else {
printf("%u", (unsigned int)ev->event_type);
}
printf(",%u,%u,%u)\n",
(unsigned int)ev->status,
(unsigned int)ev->reason,
(unsigned int)ev->interface
);
}
void cyw43_cb_process_async_event(void *cb_data, const cyw43_async_event_t *ev) {
cyw43_t *self = cb_data;
if (self->trace_flags & CYW43_TRACE_ASYNC_EV) {
cyw43_dump_async_event(ev);
}
if (ev->event_type == CYW43_EV_ESCAN_RESULT && self->wifi_scan_state == 1) {
// Escan result event
if (ev->status == 8) {
// Partial result
int ret = self->wifi_scan_cb(self->wifi_scan_env, &ev->u.scan_result);
if (ret != 0) {
// TODO need to abort scan, or just ignore any more results
}
} else if (ev->status == 0) {
// Scan complete
self->wifi_scan_state = 2;
}
} else if (ev->event_type == CYW43_EV_DISASSOC) {
cyw43_tcpip_set_link_down(self, CYW43_ITF_STA);
self->wifi_join_state = 0x0000;
/*
} else if (ev->event_type == CYW43_EV_DISASSOC_IND) {
if (ev->interface == CYW43_ITF_AP) {
// Station disassociated with our AP, let DHCP server know so it can free the IP address
dhcp_server_disassoc(&self->dhcp_server, buf + 24);
}
*/
// WiFi join events
} else if (ev->event_type == CYW43_EV_PRUNE) {
if (ev->status == 0 && ev->reason == 8) {
// RSN mismatch, retry join with WPA auth
self->pend_rejoin = true;
self->pend_rejoin_wpa = true;
pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll_func);
}
} else if (ev->event_type == CYW43_EV_SET_SSID) {
if (ev->status == 0) {
// Success setting SSID
} else if (ev->status == 3 && ev->reason == 0) {
self->wifi_join_state = WIFI_JOIN_STATE_NONET;
// No matching SSID found (could be out of range, or down)
} else {
// Other failure setting SSID
self->wifi_join_state = WIFI_JOIN_STATE_FAIL;
}
} else if (ev->event_type == CYW43_EV_AUTH) {
if (ev->status == 0) {
self->wifi_join_state |= WIFI_JOIN_STATE_AUTH;
} else if (ev->status == 6) {
// Unsolicited auth packet, ignore it
} else {
// Cannot authenticate
self->wifi_join_state = WIFI_JOIN_STATE_BADAUTH;
}
} else if (ev->event_type == CYW43_EV_DEAUTH_IND) {
if (ev->status == 0 && ev->reason == 2) {
// Deauth, probably because password was wrong; disassociate
self->pend_disassoc = true;
pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll_func);
}
} else if (ev->event_type == CYW43_EV_LINK) {
if (ev->status == 0) {
if (ev->flags & 1) {
// Link is up
if (ev->interface == CYW43_ITF_STA) {
self->wifi_join_state |= WIFI_JOIN_STATE_LINK;
} else {
cyw43_tcpip_set_link_up(self, ev->interface);
}
} else {
// Link is down
cyw43_tcpip_set_link_down(self, ev->interface);
}
}
} else if (ev->event_type == CYW43_EV_PSK_SUP) {
if (ev->status == 6) { // WLC_SUP_KEYED
self->wifi_join_state |= WIFI_JOIN_STATE_KEYED;
} else if ((ev->status == 4 || ev->status == 8 || ev->status == 11) && ev->reason == 15) {
// Timeout waiting for key exchange M1/M3/G1
// Probably at edge of the cell, retry
self->pend_rejoin = true;
pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll_func);
} else {
// PSK_SUP failure
self->wifi_join_state = WIFI_JOIN_STATE_BADAUTH;
}
}
if (self->wifi_join_state == WIFI_JOIN_STATE_ALL) {
// STA connected
self->wifi_join_state = WIFI_JOIN_STATE_ACTIVE;
cyw43_tcpip_set_link_up(self, CYW43_ITF_STA);
}
}
/*******************************************************************************/
// Ioctl and Ethernet interface
int cyw43_ioctl(cyw43_t *self, uint32_t cmd, size_t len, uint8_t *buf, uint32_t iface) {
int ret = cyw43_ensure_up(self);
if (ret) {
return ret;
}
CYW_ENTER
ret = cyw43_ll_ioctl(&self->cyw43_ll, cmd, len, buf, iface);
CYW_EXIT
return ret;
}
int cyw43_send_ethernet(cyw43_t *self, int itf, size_t len, const void *buf, bool is_pbuf) {
int ret = cyw43_ensure_up(self);
if (ret) {
return ret;
}
CYW_ENTER
ret = cyw43_ll_send_ethernet(&self->cyw43_ll, itf, len, buf, is_pbuf);
CYW_EXIT
return ret;
}
/*******************************************************************************/
// WiFi control
STATIC int cyw43_wifi_on(cyw43_t *self, uint32_t country) {
int ret = cyw43_ensure_up(self);
if (ret) {
return ret;
}
#ifdef pyb_pin_WL_RFSW_VDD
// Turn the RF-switch on
mp_hal_pin_high(pyb_pin_WL_RFSW_VDD);
#endif
CYW_ENTER
ret = cyw43_ll_wifi_on(&self->cyw43_ll, country);
CYW_EXIT
return ret;
}
int cyw43_wifi_pm(cyw43_t *self, uint32_t pm_in) {
int ret = cyw43_ensure_up(self);
if (ret) {
return ret;
}
// pm_in: 0x00adbrrm
uint32_t pm = pm_in & 0xf;
uint32_t pm_sleep_ret = (pm_in >> 4) & 0xff;
uint32_t li_bcn = (pm_in >> 12) & 0xf;
uint32_t li_dtim = (pm_in >> 16) & 0xf;
uint32_t li_assoc = (pm_in >> 20) & 0xf;
CYW_ENTER
ret = cyw43_ll_wifi_pm(&self->cyw43_ll, pm, pm_sleep_ret, li_bcn, li_dtim, li_assoc);
CYW_EXIT
return ret;
}
int cyw43_wifi_get_mac(cyw43_t *self, int itf, uint8_t mac[6]) {
mp_hal_get_mac(MP_HAL_MAC_WLAN0, &mac[0]);
return 0;
}
#define MAKE_COUNTRY(a, b, rev) ((a) | (b) << 8 | (rev) << 16)
void cyw43_wifi_set_up(cyw43_t *self, int itf, bool up) {
if (up) {
if (self->itf_state == 0) {
uint32_t country;
extern char pyb_country_code[2];
if (pyb_country_code[0] == '\0' || pyb_country_code[1] == '\0') {
country = MAKE_COUNTRY('X', 'X', 17); // default to world-wide (passive ch 12-14)
} else {
country = MAKE_COUNTRY(pyb_country_code[0], pyb_country_code[1], 0);
}
cyw43_wifi_on(self, country);
cyw43_wifi_pm(self, 10 << 20 | 1 << 16 | 1 << 12 | 20 << 4 | 2);
}
if (itf == CYW43_ITF_AP) {
cyw43_wifi_ap_init(self);
cyw43_wifi_ap_set_up(self, true);
}
if ((self->itf_state & (1 << itf)) == 0) {
CYW_ENTER
cyw43_tcpip_deinit(self, itf);
cyw43_tcpip_init(self, itf);
self->itf_state |= 1 << itf;
CYW_EXIT
}
} else {
if (itf == CYW43_ITF_AP) {
cyw43_wifi_ap_set_up(self, false);
}
}
}
int cyw43_wifi_scan(cyw43_t *self, cyw43_wifi_scan_options_t *opts, void *env, int (*result_cb)(void*, const cyw43_ev_scan_result_t*)) {
if (self->itf_state == 0) {
return -1;
}
cyw43_ensure_up(self);
CYW_ENTER
// Set state and callback data
self->wifi_scan_state = 1;
self->wifi_scan_env = env;
self->wifi_scan_cb = result_cb;
// Start the scan
int ret = cyw43_ll_wifi_scan(&self->cyw43_ll, opts);
CYW_EXIT
return ret;
}
int cyw43_wifi_link_status(cyw43_t *self, int itf) {
if (itf == CYW43_ITF_STA) {
int s = self->wifi_join_state & 0xf;
if (s == WIFI_JOIN_STATE_ACTIVE) {
return CYW43_LINK_JOIN;
} else if (s == WIFI_JOIN_STATE_FAIL) {
return CYW43_LINK_FAIL;
} else if (s == WIFI_JOIN_STATE_NONET) {
return CYW43_LINK_NONET;
} else if (s == WIFI_JOIN_STATE_BADAUTH) {
return CYW43_LINK_BADAUTH;
} else {
return CYW43_LINK_DOWN;
}
} else {
return CYW43_LINK_DOWN;
}
}
/*******************************************************************************/
// WiFi STA
int cyw43_wifi_join(cyw43_t *self, size_t ssid_len, const uint8_t *ssid, size_t key_len, const uint8_t *key, uint32_t auth_type, const uint8_t *bssid, uint32_t channel) {
int ret = cyw43_ensure_up(self);
if (ret) {
return ret;
}
CYW_ENTER
ret = cyw43_ll_wifi_join(&self->cyw43_ll, ssid_len, ssid, key_len, key, auth_type, bssid, channel);
if (ret == 0) {
// Wait for responses: EV_AUTH, EV_LINK, EV_SET_SSID, EV_PSK_SUP
// Will get EV_DEAUTH_IND if password is invalid
self->wifi_join_state = WIFI_JOIN_STATE_ACTIVE;
if (auth_type == 0) {
// For open security we don't need EV_PSK_SUP, so set that flag indicator now
self->wifi_join_state |= WIFI_JOIN_STATE_KEYED;
}
}
CYW_EXIT
return ret;
}
int cyw43_wifi_leave(cyw43_t *self, int itf) {
// Disassociate with SSID
return cyw43_ioctl(self, CYW43_IOCTL_SET_DISASSOC, 0, NULL, itf);
}
/*******************************************************************************/
// WiFi AP
STATIC void cyw43_wifi_ap_init(cyw43_t *self) {
int ret = cyw43_ensure_up(self);
if (ret) {
return;
}
CYW_ENTER
cyw43_ll_wifi_ap_init(&self->cyw43_ll, self->ap_ssid_len, self->ap_ssid, self->ap_auth, self->ap_key_len, self->ap_key, self->ap_channel);
CYW_EXIT
}
STATIC void cyw43_wifi_ap_set_up(cyw43_t *self, bool up) {
int ret = cyw43_ensure_up(self);
if (ret) {
return;
}
CYW_ENTER
cyw43_ll_wifi_ap_set_up(&self->cyw43_ll, up);
CYW_EXIT
}
void cyw43_wifi_ap_get_stas(cyw43_t *self, int *num_stas, uint8_t *macs) {
int ret = cyw43_ensure_up(self);
if (ret) {
return;
}
CYW_ENTER
cyw43_ll_wifi_ap_get_stas(&self->cyw43_ll, num_stas, macs);
CYW_EXIT
}

135
drivers/cyw43/cyw43_ll.h
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018-2019 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.
*/
#ifndef MICROPY_INCLUDED_STM32_CYW43_LL_H
#define MICROPY_INCLUDED_STM32_CYW43_LL_H
// IOCTL commands
#define CYW43_IOCTL_GET_SSID (0x32)
#define CYW43_IOCTL_GET_CHANNEL (0x3a)
#define CYW43_IOCTL_SET_DISASSOC (0x69)
#define CYW43_IOCTL_GET_ANTDIV (0x7e)
#define CYW43_IOCTL_SET_ANTDIV (0x81)
#define CYW43_IOCTL_SET_MONITOR (0xd9)
#define CYW43_IOCTL_GET_VAR (0x20c)
#define CYW43_IOCTL_SET_VAR (0x20f)
// Async events, event_type field
#define CYW43_EV_SET_SSID (0)
#define CYW43_EV_JOIN (1)
#define CYW43_EV_AUTH (3)
#define CYW43_EV_DEAUTH_IND (6)
#define CYW43_EV_ASSOC (7)
#define CYW43_EV_DISASSOC (11)
#define CYW43_EV_DISASSOC_IND (12)
#define CYW43_EV_LINK (16)
#define CYW43_EV_PRUNE (23)
#define CYW43_EV_PSK_SUP (46)
#define CYW43_EV_ESCAN_RESULT (69)
#define CYW43_EV_CSA_COMPLETE_IND (80)
#define CYW43_EV_ASSOC_REQ_IE (87)
#define CYW43_EV_ASSOC_RESP_IE (88)
enum {
CYW43_ITF_STA,
CYW43_ITF_AP,
};
typedef struct _cyw43_ev_scan_result_t {
uint32_t _0[5];
uint8_t bssid[6];
uint16_t _1[2];
uint8_t ssid_len;
uint8_t ssid[32];
uint32_t _2[5];
uint16_t channel;
uint16_t _3;
uint8_t auth_mode;
int16_t rssi;
} cyw43_ev_scan_result_t;
typedef struct _cyw43_async_event_t {
uint16_t _0;
uint16_t flags;
uint32_t event_type;
uint32_t status;
uint32_t reason;
uint8_t _1[30];
uint8_t interface;
uint8_t _2;
union {
cyw43_ev_scan_result_t scan_result;
} u;
} cyw43_async_event_t;
typedef struct _cyw43_wifi_scan_options_t {
uint32_t version;
uint16_t action;
uint16_t _;
uint32_t ssid_len; // 0 to select all
uint8_t ssid[32];
uint8_t bssid[6];
int8_t bss_type; // fill with 0xff to select all
int8_t scan_type; // 0=active, 1=passive
int32_t nprobes;
int32_t active_time;
int32_t passive_time;
int32_t home_time;
int32_t channel_num;
uint16_t channel_list[1];
} cyw43_wifi_scan_options_t;
typedef struct _cyw43_ll_t {
uint32_t opaque[528];
} cyw43_ll_t;
void cyw43_ll_init(cyw43_ll_t *self, void *cb_data);
void cyw43_ll_deinit(cyw43_ll_t *self);
int cyw43_ll_bus_init(cyw43_ll_t *self, const uint8_t *mac);
void cyw43_ll_bus_sleep(cyw43_ll_t *self, bool can_sleep);
void cyw43_ll_process_packets(cyw43_ll_t *self);
int cyw43_ll_ioctl(cyw43_ll_t *self, uint32_t cmd, size_t len, uint8_t *buf, uint32_t iface);
int cyw43_ll_send_ethernet(cyw43_ll_t *self, int itf, size_t len, const void *buf, bool is_pbuf);
int cyw43_ll_wifi_on(cyw43_ll_t *self, uint32_t country);
int cyw43_ll_wifi_pm(cyw43_ll_t *self, uint32_t pm, uint32_t pm_sleep_ret, uint32_t li_bcn, uint32_t li_dtim, uint32_t li_assoc);
int cyw43_ll_wifi_scan(cyw43_ll_t *self, cyw43_wifi_scan_options_t *opts);
int cyw43_ll_wifi_join(cyw43_ll_t *self, size_t ssid_len, const uint8_t *ssid, size_t key_len, const uint8_t *key, uint32_t auth_type, const uint8_t *bssid, uint32_t channel);
void cyw43_ll_wifi_set_wpa_auth(cyw43_ll_t *self);
void cyw43_ll_wifi_rejoin(cyw43_ll_t *self);
int cyw43_ll_wifi_ap_init(cyw43_ll_t *self, size_t ssid_len, const uint8_t *ssid, uint32_t auth, size_t key_len, const uint8_t *key, uint32_t channel);
int cyw43_ll_wifi_ap_set_up(cyw43_ll_t *self, bool up);
int cyw43_ll_wifi_ap_get_stas(cyw43_ll_t *self, int *num_stas, uint8_t *macs);
// Callbacks to be provided by mid-level interface
int cyw43_cb_read_host_interrupt_pin(void *cb_data);
void cyw43_cb_ensure_awake(void *cb_data);
void cyw43_cb_process_async_event(void *cb_data, const cyw43_async_event_t *ev);
void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t *buf);
#endif // MICROPY_INCLUDED_STM32_CYW43_LL_H

197
drivers/cyw43/cyw43_lwip.c
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018-2019 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 <string.h>
#include "py/mphal.h"
#include "lib/netutils/netutils.h"
#include "lwip/etharp.h"
#include "lwip/dns.h"
#include "lwip/apps/mdns.h"
#include "drivers/cyw43/cyw43.h"
STATIC void cyw43_ethernet_trace(cyw43_t *self, struct netif *netif, size_t len, const void *data, unsigned int flags) {
bool is_tx = flags & NETUTILS_TRACE_IS_TX;
if ((is_tx && (self->trace_flags & CYW43_TRACE_ETH_TX))
|| (!is_tx && (self->trace_flags & CYW43_TRACE_ETH_RX))) {
const uint8_t *buf;
if (len == (size_t)-1) {
// data is a pbuf
const struct pbuf *pbuf = data;
buf = pbuf->payload;
len = pbuf->len; // restricted to print only the first chunk of the pbuf
} else {
// data is actual data buffer
buf = data;
}
if (self->trace_flags & CYW43_TRACE_MAC) {
printf("[% 8d] ETH%cX itf=%c%c len=%u", mp_hal_ticks_ms(), is_tx ? 'T' : 'R', netif->name[0], netif->name[1], len);
printf(" MAC type=%d subtype=%d data=", buf[0] >> 2 & 3, buf[0] >> 4);
for (size_t i = 0; i < len; ++i) {
printf(" %02x", buf[i]);
}
printf("\n");
return;
}
if (self->trace_flags & CYW43_TRACE_ETH_FULL) {
flags |= NETUTILS_TRACE_PAYLOAD;
}
netutils_ethernet_trace(MP_PYTHON_PRINTER, len, buf, flags);
}
}
STATIC err_t cyw43_netif_output(struct netif *netif, struct pbuf *p) {
cyw43_t *self = netif->state;
if (self->trace_flags != 0) {
cyw43_ethernet_trace(self, netif, (size_t)-1, p, NETUTILS_TRACE_IS_TX | NETUTILS_TRACE_NEWLINE);
}
int itf = netif->name[1] - '0';
int ret = cyw43_send_ethernet(self, itf, p->tot_len, (void*)p, true);
if (ret) {
printf("[CYW43] send_ethernet failed: %d\n", ret);
return ERR_IF;
}
return ERR_OK;
}
STATIC err_t cyw43_netif_init(struct netif *netif) {
netif->linkoutput = cyw43_netif_output;
netif->output = etharp_output;
netif->mtu = 1500;
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET | NETIF_FLAG_IGMP;
cyw43_wifi_get_mac(netif->state, netif->name[1] - '0', netif->hwaddr);
netif->hwaddr_len = sizeof(netif->hwaddr);
return ERR_OK;
}
void cyw43_tcpip_init(cyw43_t *self, int itf) {
ip_addr_t ipconfig[4];
#if LWIP_IPV6
#define IP(x) ((x).u_addr.ip4)
#else
#define IP(x) (x)
#endif
if (itf == 0) {
// need to zero out to get isconnected() working
IP4_ADDR(&IP(ipconfig[0]), 0, 0, 0, 0);
IP4_ADDR(&IP(ipconfig[2]), 192, 168, 0, 1);
} else {
IP4_ADDR(&IP(ipconfig[0]), 192, 168, 4, 1);
IP4_ADDR(&IP(ipconfig[2]), 192, 168, 4, 1);
}
IP4_ADDR(&IP(ipconfig[1]), 255, 255, 255, 0);
IP4_ADDR(&IP(ipconfig[3]), 8, 8, 8, 8);
#undef IP
struct netif *n = &self->netif[itf];
n->name[0] = 'w';
n->name[1] = '0' + itf;
#if LWIP_IPV6
netif_add(n, &ipconfig[0].u_addr.ip4, &ipconfig[1].u_addr.ip4, &ipconfig[2].u_addr.ip4, self, cyw43_netif_init, ethernet_input);
#else
netif_add(n, &ipconfig[0], &ipconfig[1], &ipconfig[2], self, cyw43_netif_init, netif_input);
#endif
netif_set_hostname(n, "PYBD");
netif_set_default(n);
netif_set_up(n);
if (itf == CYW43_ITF_STA) {
dns_setserver(0, &ipconfig[3]);
dhcp_set_struct(n, &self->dhcp_client);
dhcp_start(n);
} else {
dhcp_server_init(&self->dhcp_server, &ipconfig[0], &ipconfig[1]);
}
#if LWIP_MDNS_RESPONDER
// TODO better to call after IP address is set
char mdns_hostname[9];
memcpy(&mdns_hostname[0], "PYBD", 4);
mp_hal_get_mac_ascii(MP_HAL_MAC_WLAN0, 8, 4, &mdns_hostname[4]);
mdns_hostname[8] = '\0';
mdns_resp_add_netif(n, mdns_hostname, 60);
#endif
}
void cyw43_tcpip_deinit(cyw43_t *self, int itf) {
struct netif *n = &self->netif[itf];
if (itf == CYW43_ITF_STA) {
dhcp_stop(n);
} else {
dhcp_server_deinit(&self->dhcp_server);
}
#if LWIP_MDNS_RESPONDER
mdns_resp_remove_netif(n);
#endif
for (struct netif *netif = netif_list; netif != NULL; netif = netif->next) {
if (netif == n) {
netif_remove(netif);
netif->ip_addr.addr = 0;
netif->flags = 0;
}
}
}
void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t *buf) {
cyw43_t *self = cb_data;
struct netif *netif = &self->netif[itf];
if (self->trace_flags) {
cyw43_ethernet_trace(self, netif, len, buf, NETUTILS_TRACE_NEWLINE);
}
if (netif->flags & NETIF_FLAG_LINK_UP) {
struct pbuf *p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
if (p != NULL) {
pbuf_take(p, buf, len);
if (netif->input(p, netif) != ERR_OK) {
pbuf_free(p);
}
}
}
}
void cyw43_tcpip_set_link_up(cyw43_t *self, int itf) {
netif_set_link_up(&self->netif[itf]);
}
void cyw43_tcpip_set_link_down(cyw43_t *self, int itf) {
netif_set_link_down(&self->netif[itf]);
}
int cyw43_tcpip_link_status(cyw43_t *self, int itf) {
struct netif *netif = &self->netif[itf];
if ((netif->flags & (NETIF_FLAG_UP | NETIF_FLAG_LINK_UP))
== (NETIF_FLAG_UP | NETIF_FLAG_LINK_UP)) {
if (netif->ip_addr.addr != 0) {
return CYW43_LINK_UP;
} else {
return CYW43_LINK_NOIP;
}
} else {
return cyw43_wifi_link_status(self, itf);
}
}

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drivers/cyw43/libcyw43.a
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