125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
// Copyright (c) 2022 Cesanta Software Limited
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// All rights reserved
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#include "hal.h"
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#include "mongoose.h"
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#include "tusb.h"
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#define LED PIN('B', 7) // On-board LED pin (blue)
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static struct mg_tcpip_if *s_ifp;
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const uint8_t tud_network_mac_address[6] = {2, 2, 0x84, 0x6A, 0x96, 0};
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static void blink_cb(void *arg) { // Blink periodically
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gpio_toggle(LED);
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(void) arg;
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}
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static volatile uint64_t s_ticks; // Milliseconds since boot
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void SysTick_Handler(void) { // SyStick IRQ handler, triggered every 1ms
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s_ticks++;
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}
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uint64_t mg_millis(void) { // Let Mongoose use our uptime function
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return s_ticks; // Return number of milliseconds since boot
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}
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void mg_random(void *buf, size_t len) { // Use on-board RNG
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for (size_t n = 0; n < len; n += sizeof(uint32_t)) {
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uint32_t r = rng_read();
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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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bool tud_network_recv_cb(const uint8_t *buf, uint16_t len) {
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mg_tcpip_qwrite((void *) buf, len, s_ifp);
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// MG_INFO(("RECV %hu", len));
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// mg_hexdump(buf, len);
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tud_network_recv_renew();
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return true;
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}
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void tud_network_init_cb(void) {
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}
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void OTG_FS_IRQHandler(void) { // USB interrupt handler
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tud_int_handler(0); // Pass control to TinyUSB
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}
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uint16_t tud_network_xmit_cb(uint8_t *dst, void *ref, uint16_t arg) {
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// MG_INFO(("SEND %hu", arg));
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memcpy(dst, ref, arg);
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return arg;
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}
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static size_t usb_tx(const void *buf, size_t len, struct mg_tcpip_if *ifp) {
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if (!tud_ready()) return 0;
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while (!tud_network_can_xmit(len)) tud_task();
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tud_network_xmit((void *) buf, len);
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(void) ifp;
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return len;
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}
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static bool usb_up(struct mg_tcpip_if *ifp) {
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(void) ifp;
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return tud_inited() && tud_ready() && tud_connected();
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}
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static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
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if (ev == MG_EV_HTTP_MSG) {
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struct mg_http_message *hm = (struct mg_http_message *) ev_data;
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if (mg_http_match_uri(hm, "/api/debug")) {
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int level = mg_json_get_long(hm->body, "$.level", MG_LL_DEBUG);
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mg_log_set(level);
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mg_http_reply(c, 200, "", "Debug level set to %d\n", level);
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} else {
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mg_http_reply(c, 200, "", "hi\n");
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}
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}
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(void) fn_data;
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}
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int main(void) {
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gpio_output(LED); // Setup blue LED
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uart_init(UART_DEBUG, 115200); // Initialise debug printf
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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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MG_INFO(("Init TCP/IP stack ..."));
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struct mg_tcpip_driver driver = {.tx = usb_tx, .up = usb_up};
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struct mg_tcpip_if mif = {.mac = GENERATE_LOCALLY_ADMINISTERED_MAC(),
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.ip = mg_htonl(MG_U32(192, 168, 3, 1)),
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.mask = mg_htonl(MG_U32(255, 255, 255, 0)),
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.enable_dhcp_server = true,
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.driver = &driver,
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.recv_queue.size = 4096};
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s_ifp = &mif;
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mg_tcpip_init(&mgr, &mif);
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mg_timer_add(&mgr, 500, MG_TIMER_REPEAT, blink_cb, &mgr);
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mg_http_listen(&mgr, "tcp://0.0.0.0:80", fn, &mgr);
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MG_INFO(("Init USB ..."));
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gpio_init(PIN('A', 11), GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_HIGH,
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GPIO_PULL_NONE, 10); // D+
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gpio_init(PIN('A', 12), GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_HIGH,
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GPIO_PULL_NONE, 10); // D-
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gpio_init(PIN('A', 9), GPIO_MODE_INPUT, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_HIGH,
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GPIO_PULL_NONE, 0); // VBUS
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gpio_init(PIN('A', 10), GPIO_MODE_AF, GPIO_OTYPE_OPEN_DRAIN, GPIO_SPEED_HIGH,
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GPIO_PULL_UP, 10); // ID
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RCC->AHB2ENR |= RCC_AHB2ENR_OTGFSEN; // Enable USB FS clock
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USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_NOVBUSSENS; // VBUS sensing disable
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USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBUSBSEN; // VBUS sensing enable
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tusb_init();
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MG_INFO(("Init done, starting main loop ..."));
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for (;;) {
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mg_mgr_poll(&mgr, 0);
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tud_task();
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}
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return 0;
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}
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