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https://github.com/cesanta/mongoose.git
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101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
// Copyright (c) 2023 Cesanta Software Limited
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// All rights reserved
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#include <stdio.h>
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#include <string.h>
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#include "hardware/spi.h"
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#include "pico/rand.h"
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#include "pico/stdlib.h"
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#include "pico/unique_id.h"
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#include "mongoose.h"
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#include "net.h"
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enum { BLINK_PERIOD_MS = 1000 };
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enum { LED = 25, SPI_CS = 17, SPI_CLK = 18, SPI_TX = 19, SPI_RX = 16 }; // Pins
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static void spi_begin(void *spi) {
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gpio_put(SPI_CS, 0);
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}
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static void spi_end(void *spi) {
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gpio_put(SPI_CS, 1);
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}
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static uint8_t spi_txn(void *spi, uint8_t byte) {
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uint8_t result = 0;
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spi_write_read_blocking(spi0, &byte, &result, 1);
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return result;
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}
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void mg_random(void *buf, size_t len) {
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for (size_t n = 0; n < len; n += sizeof(uint32_t)) {
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uint32_t r = get_rand_32();
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memcpy((char *) buf + n, &r, n + sizeof(r) > len ? len - n : sizeof(r));
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}
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}
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static void timer_fn(void *arg) {
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gpio_put(PICO_DEFAULT_LED_PIN,
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!gpio_get_out_level(PICO_DEFAULT_LED_PIN)); // Blink LED
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struct mg_tcpip_if *ifp = arg; // And show
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const char *names[] = {"down", "up", "ready"}; // network stats
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MG_INFO(("Ethernet: %s, IP: %M, rx:%u, tx:%u, dr:%u, er:%u",
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names[ifp->state], mg_print_ip4, &ifp->ip, ifp->nrecv, ifp->nsent,
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ifp->ndrop, ifp->nerr));
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}
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static void eth_spi_init(void) {
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// Init SPI pins
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spi_init(spi0, 500 * 1000);
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gpio_set_function(SPI_RX, GPIO_FUNC_SPI); // MISO
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gpio_set_function(SPI_TX, GPIO_FUNC_SPI); // MOSI
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gpio_set_function(SPI_CLK, GPIO_FUNC_SPI); // CLK
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gpio_init(SPI_CS); // CS
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gpio_set_dir(SPI_CS, GPIO_OUT); // Set CS to output
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gpio_put(SPI_CS, 1); // And drive CS high (inactive)
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}
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// Helper macro for MAC generation
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#define GENERATE_LOCALLY_ADMINISTERED_MAC(id) \
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{ 2, id[3], id[4], id[5], id[6], id[7] }
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int main(void) {
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stdio_init_all();
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gpio_init(LED); // Setup board LED
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gpio_set_dir(LED, GPIO_OUT);
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eth_spi_init(); // Initialise SPI pins
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MG_INFO(("Starting ..."));
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pico_unique_board_id_t board_id;
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pico_get_unique_board_id(&board_id);
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uint8_t *id = board_id.id;
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struct mg_mgr mgr; // Initialise
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mg_mgr_init(&mgr); // Mongoose event manager
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mg_log_set(MG_LL_DEBUG); // Set log level
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// Initialise Mongoose network stack
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// Specify MAC address, and IP/mask/GW in network byte order for static
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// IP configuration. If IP/mask/GW are unset, DHCP is going to be used
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struct mg_tcpip_spi spi = {NULL, spi_begin, spi_end, spi_txn};
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struct mg_tcpip_if mif = {.mac = GENERATE_LOCALLY_ADMINISTERED_MAC(id),
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.driver = &mg_tcpip_driver_w5500,
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.driver_data = &spi};
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mg_tcpip_init(&mgr, &mif);
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mg_timer_add(&mgr, BLINK_PERIOD_MS, MG_TIMER_REPEAT, timer_fn, &mif);
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MG_INFO(("MAC: %M. Waiting for IP...", mg_print_mac, mif.mac));
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while (mif.state != MG_TCPIP_STATE_READY) {
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mg_mgr_poll(&mgr, 0);
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}
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MG_INFO(("Initialising application..."));
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web_init(&mgr);
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MG_INFO(("Starting event loop"));
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for (;;) {
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mg_mgr_poll(&mgr, 1);
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}
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return 0;
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}
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