manual parsing kind of works

main/main.c

@@ -10,6 +10,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <strings.h>
+#include <sys/types.h>
 #include "sdkconfig.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
@@ -50,8 +51,19 @@ static void https_request_task(void *pvparameters){
     vTaskDelete(NULL);
 }
 
-//static lwjson_token_t tokens[1100];
-//static lwjson_t lwjson;
+void get_json_string(char* buf, char* name, char* dest){
+    char* element = strstr(buf, name);
+    char *ptr= element;
+    while(*ptr != ':') ptr++;
+    while(*ptr != '"') ptr++;
+    ptr++;
+
+    char *end=ptr;
+    while(*end != '"') end++;
+
+    strncpy(dest, ptr, end-ptr);
+    dest[end-ptr]=0;
+}
 
 uint8_t json_ok = 0;
 static void json_parse_task(void *pvparameters){
@@ -63,15 +75,27 @@ static void json_parse_task(void *pvparameters){
     ESP_LOGI("bsvg", "start at %ld: \"%.10s\"", (uint32_t)start, start);
     //departureList = cJSON_Parse(start);
 
+    uint8_t line = 0;
     char *item = start;
+    char txt[5][50];
     while((item = strstr(item+1, "{ \"stopID\":")) != 0){
-        char *symbol = strstr(item, "\"symbol\"");
-        char *direction = strstr(item, "\"direction\"");
-        char *countdown = strstr(item, "\"countdown\"");
-        if(symbol && direction && countdown)
-            printf("%.15s\t%.30s\t%.15s\n", symbol, direction, countdown);
-        else
-            printf("cant find symbol\n");
+        char symbol[10];
+        get_json_string(item, "symbol", symbol);
+
+        char direction[50];
+        get_json_string(item, "direction", direction);
+
+        char countdown[10] ;
+        get_json_string(item, "countdown", countdown);
+
+        if(line < 6){
+            sprintf(txt[line], "%.3s %.15s %.3s", symbol, direction, countdown);
+            printf("line = %d\n", line);
+            printf("text = %s\n", txt[line]);
+            put_line(fb, line, txt[line], 1, 1);
+            //printf("\n");
+        }
+        line++;
     }
 
     //lwjson_init(&lwjson, tokens, LWJSON_ARRAYSIZE(tokens));
@@ -91,8 +115,6 @@ static void json_parse_task(void *pvparameters){
     //    ESP_LOGI("bsvg", "parse fail");
     //}
 
-    printf("free heap: %d\n", heap_caps_get_free_size( MALLOC_CAP_DEFAULT) );
-
     json_ok = 1;
     vTaskDelete(NULL);
 }