j3d1/fiatlux
1
0
Fork 1
Code Issues 18 Pull requests Projects Releases 2 Wiki Activity

add basic websocket
All checks were successful
continuous-integration/drone/push Build is passing
Details

Browse source
This commit is contained in:
j3d1 2021-07-19 20:51:03 +02:00
parent 23cb4a558b
commit f4d1b53760
4 changed files with 455 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

229
firmware/web.cpp
View file

@ -23,11 +23,240 @@ extern "C" {
#include <httpd/httpd.h>
}
#define vTaskDelayMs(ms) vTaskDelay((ms) / portTICK_PERIOD_MS)
struct {
bool global;
bool connection;
bool wifi;
} has_changed;
void websocket_task(void *pvParameter) {
auto *pcb = (struct tcp_pcb *) pvParameter;
size_t connstarttime = xTaskGetTickCount();
has_changed = {true, true, true};
for (;;) {
if(pcb == NULL || pcb->state != ESTABLISHED) {
printf("Connection closed, deleting task\n");
break;
}
//Global Info
if(has_changed.global) {
has_changed.global = false;
timeval tv;
gettimeofday(&tv, NULL);
int uptime = xTaskGetTickCount() * portTICK_PERIOD_MS / 1000;
int heap = (int) xPortGetFreeHeapSize();
uint32_t chip_id = sdk_system_get_chip_id();
uint32_t flash_id = sdk_spi_flash_get_id();
uint32_t flash_size = sdk_flashchip.chip_size >> 10;
char *hostname = NULL;
sysparam_get_string("hostname", &hostname);
/* Generate response in JSON format */
char response[160];
size_t len = snprintf(response, sizeof(response),
"{\"walltime\" : \"%d\","
"\"uptime\" : \"%d\","
" \"heap\" : \"%d\","
" \"chipid\" : \"%08x\","
" \"flashid\" : \"0x%08x\","
" \"flashsize\" : \"%u\","
" \"hostname\" : \"%s\""
"}", (int) tv.tv_sec, uptime, heap, chip_id, flash_id, flash_size, hostname);
free(hostname);
if(len < sizeof(response)) {
LOCK_TCPIP_CORE();
websocket_write(pcb, (unsigned char *) response, len, WS_TEXT_MODE);
UNLOCK_TCPIP_CORE();
} else
printf("buffer too small 1");
vTaskDelayMs(2000);
}
//Connection Info
if(has_changed.connection) {
has_changed.connection = false;
timeval tv;
gettimeofday(&tv, NULL);
int connuptime = (xTaskGetTickCount() - connstarttime) * portTICK_PERIOD_MS / 1000;
printf("conn %d: "
IPSTR
" <-> "
IPSTR
" \n", pcb->netif_idx, IP2STR(&pcb->local_ip), IP2STR(&pcb->remote_ip));
char response[160];
size_t len = snprintf(response, sizeof(response),
"{\"connage\" : \"%d\","
"\"clientip\" : \""
IPSTR
"\""
"}", connuptime, IP2STR(&pcb->remote_ip));
if(len < sizeof(response)) {
LOCK_TCPIP_CORE();
websocket_write(pcb, (unsigned char *) response, len, WS_TEXT_MODE);
UNLOCK_TCPIP_CORE();
} else
printf("buffer too small 1");
vTaskDelayMs(2000);
}
if(has_changed.wifi) {
has_changed.wifi = false;
uint8_t opmode = sdk_wifi_get_opmode();
const char *opmode_str = "??";
switch (opmode) {
case NULL_MODE:
opmode_str = "Null";
break;
case STATION_MODE:
opmode_str = "Station";
break;
case SOFTAP_MODE:
opmode_str = "SoftAP";
break;
case STATIONAP_MODE:
opmode_str = "StationAP";
break;
default:
break;
}
/*struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr);
if (getpeername(s, (struct sockaddr *)&addr, &addr_len) == 0) {
printf("peer\n");
}*/
if(opmode == SOFTAP_MODE || opmode == STATIONAP_MODE) {
uint8_t hwaddr[6];
sdk_wifi_get_macaddr(SOFTAP_IF, hwaddr);
ip_info info;
sdk_wifi_get_ip_info(SOFTAP_IF, &info);
char *apssid = NULL;
sysparam_get_string("wifi_ap_ssid", &apssid);
/* Generate response in JSON format */
char response[128];
size_t len = snprintf(response, sizeof(response),
"{\"opmode\" : \"%s\","
" \"apssid\" : \"%s\","
" \"apip\" : \""
IPSTR
"\","
" \"apmac\" : \""
MACSTR
"\""
"}", opmode_str, apssid, IP2STR(&info.ip), MAC2STR(hwaddr));
free(apssid);
if(len < sizeof(response)) {
LOCK_TCPIP_CORE();
websocket_write(pcb, (unsigned char *) response, len, WS_TEXT_MODE);
UNLOCK_TCPIP_CORE();
} else
printf("buffer too small 2");
}
vTaskDelayMs(2000);
if(opmode == STATION_MODE || opmode == STATIONAP_MODE) {
uint8_t hwaddr[6];
sdk_wifi_get_macaddr(STATION_IF, hwaddr);
ip_info info;
sdk_wifi_get_ip_info(STATION_IF, &info);
char *stassid = nullptr;
sysparam_get_string("wifi_sta_ssid", &stassid);
/* Generate response in JSON format */
char response[128];
size_t len = snprintf(response, sizeof(response),
"{\"opmode\" : \"%s\","
" \"stassid\" : \"%s\","
" \"staip\" : \""
IPSTR
"\","
" \"stamac\" : \""
MACSTR
"\""
"}", opmode_str, stassid, IP2STR(&info.ip), MAC2STR(hwaddr));
free(stassid);
if(len < sizeof(response)) {
LOCK_TCPIP_CORE();
websocket_write(pcb, (unsigned char *) response, len, WS_TEXT_MODE);
UNLOCK_TCPIP_CORE();
} else
printf("buffer too small 3");
}
}
vTaskDelayMs(500);
{
uint8_t response[3];
uint16_t val = 0;
val = sdk_system_adc_read();
response[2] = (uint8_t) val;
response[1] = val >> 8;
response[0] = 'V';
websocket_write(pcb, response, 3, WS_BIN_MODE);
}
vTaskDelayMs(500);
}
vTaskDelete(NULL);
}
/**
* This function is called when websocket frame is received.
*
* Note: this function is executed on TCP thread and should return as soon
* as possible.
*/
void websocket_cb(struct tcp_pcb *pcb, char *data, u16_t data_len, uint8_t mode) {
uint8_t response[3];
uint16_t val = 0;
char cmd = '0';
switch (data[0]) {
default:
printf("[websocket_callback]:\n%.*s\n", (int) data_len, (char *) data);
printf("Unknown command\n");
val = 0;
break;
}
response[2] = (uint8_t) val;
response[1] = val >> 8;
response[0] = cmd;
websocket_write(pcb, response, 3, WS_BIN_MODE);
}
/**
* This function is called when new websocket is open and
* creates a new websocket_task if requested URI equals '/stream'.
*/
void websocket_open_cb(struct tcp_pcb *pcb, const char *uri) {
printf("WS URI: %s\n", uri);
if(!strcmp(uri, "/stream")) {
xTaskCreate(&websocket_task, "websocket_task", 512, (void *) pcb, 3, nullptr);
}
}
extern "C" [[noreturn]] void httpd_task(void *pvParameters) {
while(!uxSemaphoreGetCount( wifi_available_semaphore ))
vTaskDelay(500 / portTICK_PERIOD_MS);
websocket_register_callbacks((tWsOpenHandler) websocket_open_cb, (tWsHandler) websocket_cb);
httpd_init();
for (;;)