mongoose/examples/ti/ek-tm4c1294xl-make-baremetal-builtin-rndis/main.c
2023-11-08 13:54:44 -03:00

130 lines
4.1 KiB
C

// Copyright (c) 2022-2023 Cesanta Software Limited
// All rights reserved
#include "hal.h"
#include "mongoose.h"
#include "tusb.h"
#define LED1 PIN('N', 1) // On-board LED pin
#define LED2 PIN('N', 0) // On-board LED pin
#define LED3 PIN('F', 4) // On-board LED pin
#define LED4 PIN('F', 0) // On-board LED pin
static struct mg_tcpip_if *s_ifp;
const uint8_t tud_network_mac_address[6] = {2, 2, 0x84, 0x6A, 0x96, 0};
static void blink_cb(void *arg) { // Blink periodically
gpio_toggle(LED1);
(void) arg;
}
static volatile uint64_t s_ticks; // Milliseconds since boot
void SysTick_Handler(void) { // SyStick IRQ handler, triggered every 1ms
s_ticks++;
}
uint64_t mg_millis(void) { // Let Mongoose use our uptime function
return s_ticks; // Return number of milliseconds since boot
}
bool tud_network_recv_cb(const uint8_t *buf, uint16_t len) {
mg_tcpip_qwrite((void *) buf, len, s_ifp);
// MG_INFO(("RECV %hu", len));
// mg_hexdump(buf, len);
tud_network_recv_renew();
return true;
}
void tud_network_init_cb(void) {
}
void USB0_Handler(void) { // USB interrupt handler
tud_int_handler(0); // Pass control to TinyUSB
}
uint16_t tud_network_xmit_cb(uint8_t *dst, void *ref, uint16_t arg) {
// MG_INFO(("SEND %hu", arg));
memcpy(dst, ref, arg);
return arg;
}
static size_t usb_tx(const void *buf, size_t len, struct mg_tcpip_if *ifp) {
if (!tud_ready()) return 0;
while (!tud_network_can_xmit(len)) tud_task();
tud_network_xmit((void *) buf, len);
(void) ifp;
return len;
}
static bool usb_up(struct mg_tcpip_if *ifp) {
(void) ifp;
return tud_inited() && tud_ready() && tud_connected();
}
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
if (ev == MG_EV_HTTP_MSG) {
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
if (mg_http_match_uri(hm, "/api/debug")) {
int level = mg_json_get_long(hm->body, "$.level", MG_LL_DEBUG);
mg_log_set(level);
mg_http_reply(c, 200, "", "Debug level set to %d\n", level);
} else {
mg_http_reply(c, 200, "", "hi\n");
}
}
(void) fn_data;
}
int main(void) {
gpio_output(LED1); // Setup blue LED
uart_init(UART_DEBUG, 115200); // Initialise debug printf
struct mg_mgr mgr; // Initialise
mg_mgr_init(&mgr); // Mongoose event manager
mg_log_set(MG_LL_DEBUG); // Set log level
MG_INFO(("Init TCP/IP stack ..."));
struct mg_tcpip_driver driver = {.tx = usb_tx, .up = usb_up};
struct mg_tcpip_if mif = {.mac = {2, 0, 1, 2, 3, 0x77},
.ip = mg_htonl(MG_U32(192, 168, 3, 1)),
.mask = mg_htonl(MG_U32(255, 255, 255, 0)),
.enable_dhcp_server = true,
.driver = &driver,
.recv_queue.size = 4096};
s_ifp = &mif;
mg_tcpip_init(&mgr, &mif);
mg_timer_add(&mgr, 500, MG_TIMER_REPEAT, blink_cb, &mgr);
mg_http_listen(&mgr, "tcp://0.0.0.0:80", fn, &mgr);
MG_INFO(("Init USB ..."));
gpio_init(PIN('L', 6), GPIO_MODE_ANALOG, GPIO_OTYPE_PUSH_PULL,
GPIO_SPEED_HIGH, GPIO_PULL_NONE, 0); // D_P
gpio_init(PIN('L', 7), GPIO_MODE_ANALOG, GPIO_OTYPE_PUSH_PULL,
GPIO_SPEED_HIGH, GPIO_PULL_NONE, 0); // D_N
gpio_init(PIN('B', 1), GPIO_MODE_ANALOG, GPIO_OTYPE_PUSH_PULL,
GPIO_SPEED_HIGH, GPIO_PULL_NONE, 0); // VBUS
gpio_init(PIN('B', 0), GPIO_MODE_ANALOG, GPIO_OTYPE_PUSH_PULL,
GPIO_SPEED_HIGH, GPIO_PULL_NONE, 0); // ID
SYSCTL->RCGCUSB |= BIT(0); // Enable USB clock
SYSCTL->SRUSB |= BIT(0); // Reset peripheral
SYSCTL->SRUSB &= ~BIT(0);
USB0->CC = 0x207; // Enable clock and configure divisor for 60MHz clock
USB0->GPCS = 3;
USB0->LPMCNTRL &= ~BIT(0);
USB0->LPMCNTRL = 0;
MG_INFO(("USB Controller version %d", 1 + (USB0->PP & 0xF)));
MG_INFO(("IS: %x", USB0->IS));
if (USB0->EPCISC & BIT(0)) // check PF flag,
USB0->EPCISC |= BIT(0); // clear PF interrupt if so
tusb_init();
MG_INFO(("Init done, starting main loop ..."));
for (;;) {
mg_mgr_poll(&mgr, 0);
tud_task();
}
return 0;
}