50e46552c0
This includes: - Configuration file for the cyw43-driver. - Integration of cyw43-driver into the build, using lwIP. - Enhancements to machine.Pin to support extension IO pins provided by the CYW43xx. - More mp-hal pin helper functions. - mp_hal_get_mac_ascii MAC address helper function. - Addition of rp2.country() function to set the country code. A board can enable this driver by setting MICROPY_PY_NETWORK_CYW43 in their cmake snippet. Work done in collaboration with Graham Sanderson and Peter Harper. Signed-off-by: Damien George <damien@micropython.org>
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "pendsv.h"
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#if MICROPY_PY_LWIP
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#include "lwip/timeouts.h"
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#include "pico/time.h"
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// Poll lwIP every 64ms by default
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#define LWIP_TICK_RATE_MS 64
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static alarm_id_t lwip_alarm_id = -1;
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#if MICROPY_PY_NETWORK_CYW43
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#include "lib/cyw43-driver/src/cyw43.h"
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#include "lib/cyw43-driver/src/cyw43_country.h"
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#include "lib/cyw43-driver/src/cyw43_stats.h"
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#include "hardware/irq.h"
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#define CYW43_IRQ_LEVEL GPIO_IRQ_LEVEL_HIGH
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#define CYW43_SHARED_IRQ_HANDLER_PRIORITY PICO_SHARED_IRQ_HANDLER_HIGHEST_ORDER_PRIORITY
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uint32_t cyw43_country_code = CYW43_COUNTRY_WORLDWIDE;
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static void gpio_irq_handler(void) {
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uint32_t events = gpio_get_irq_event_mask(CYW43_PIN_WL_HOST_WAKE);
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if (events & CYW43_IRQ_LEVEL) {
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// As we use a high level interrupt, it will go off forever until it's serviced.
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// So disable the interrupt until this is done. It's re-enabled again by
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// CYW43_POST_POLL_HOOK which is called at the end of cyw43_poll_func.
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gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, CYW43_IRQ_LEVEL, false);
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pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll);
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CYW43_STAT_INC(IRQ_COUNT);
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}
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}
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void cyw43_irq_init(void) {
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gpio_add_raw_irq_handler_with_order_priority(IO_IRQ_BANK0, gpio_irq_handler, CYW43_SHARED_IRQ_HANDLER_PRIORITY);
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irq_set_enabled(IO_IRQ_BANK0, true);
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NVIC_SetPriority(PendSV_IRQn, PICO_LOWEST_IRQ_PRIORITY);
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}
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void cyw43_post_poll_hook(void) {
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gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, CYW43_IRQ_LEVEL, true);
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}
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#endif
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#if MICROPY_PY_NETWORK_WIZNET5K
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void wiznet5k_poll(void);
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void wiznet5k_deinit(void);
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void wiznet5k_try_poll(void) {
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pendsv_schedule_dispatch(PENDSV_DISPATCH_WIZNET, wiznet5k_poll);
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}
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#endif
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u32_t sys_now(void) {
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// Used by LwIP
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return mp_hal_ticks_ms();
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}
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STATIC void lwip_poll(void) {
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// Run the lwIP internal updates
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sys_check_timeouts();
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}
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void lwip_lock_acquire(void) {
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// Prevent PendSV from running.
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pendsv_suspend();
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}
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void lwip_lock_release(void) {
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// Allow PendSV to run again.
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pendsv_resume();
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}
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STATIC int64_t alarm_callback(alarm_id_t id, void *user_data) {
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pendsv_schedule_dispatch(PENDSV_DISPATCH_LWIP, lwip_poll);
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#if MICROPY_PY_NETWORK_WIZNET5K
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pendsv_schedule_dispatch(PENDSV_DISPATCH_WIZNET, wiznet5k_poll);
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#endif
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return LWIP_TICK_RATE_MS * 1000;
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}
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void mod_network_lwip_init(void) {
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#if MICROPY_PY_NETWORK_WIZNET5K
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wiznet5k_deinit();
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#endif
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if (lwip_alarm_id != -1) {
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cancel_alarm(lwip_alarm_id);
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}
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lwip_alarm_id = add_alarm_in_us(LWIP_TICK_RATE_MS * 1000, alarm_callback, mp_const_true, true);
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}
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#endif // MICROPY_PY_LWIP
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