ejung/bsvg_on_ledmatrix
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lwjson also does not work, parsing manualy

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This commit is contained in:
Eggert Jung
2023-12-11 00:35:17 +01:00
parent 1ab009feef
commit 0b25ceb40d
3 changed files with 85 additions and 51 deletions
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4
main/CMakeLists.txt
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@@ -1,3 +1,3 @@
idf_component_register(SRCS "main.c" "font.c" "display.c" "text.c" "wlan.c" "https.c" "cJSON/cJSON.c"
idf_component_register(SRCS "main.c" "font.c" "display.c" "text.c" "wlan.c" "https.c" "lwjson/lwjson/src/lwjson/lwjson.c"
REQUIRES esp_driver_gpio esp_wifi nvs_flash esp_timer esp-tls
INCLUDE_DIRS "")
INCLUDE_DIRS "." "lwjson/lwjson/src/include")

21
main/https.c
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@@ -10,12 +10,12 @@
static const char *TAG = "https";
//#define WEB_SERVER "bsvg.efa.de"
//#define WEB_PORT "443"
//#define WEB_URL "/bsvagstd/XML_DM_REQUEST?outputFormat=JSON&stateless=1&locationServerActive=1&type_dm=stop&name_dm=\"Freiastr,Braunschweig\"&mode=direct&ptOptionsActive=1&useRealtime=0"
#define WEB_SERVER "mustbehax.de"
#define WEB_SERVER "bsvg.efa.de"
#define WEB_PORT "443"
#define WEB_URL "/web/reduced.json"
#define WEB_URL "/bsvagstd/XML_DM_REQUEST?outputFormat=JSON&stateless=1&locationServerActive=1&type_dm=stop&name_dm=\"Freiastr,Braunschweig\"&mode=direct&ptOptionsActive=1&useRealtime=1"
//#define WEB_SERVER "mustbehax.de"
//#define WEB_PORT "443"
//#define WEB_URL "/web/reduced.json"
static const char REQUEST[] = "GET " WEB_URL " HTTP/1.1\r\n"
"Host: "WEB_SERVER"\r\n"
@@ -101,13 +101,14 @@ esp_err_t https_get_request_using_crt_bundle(char* buf, size_t bufsize)
len = ret;
ESP_LOGI(TAG, "%d bytes read", len);
if(!strstr(buf, "departureList")){
ESP_LOGI(TAG,"tossing ... strstr: %ld", (uint32_t)strstr(buf, "departureList"));
write_offset=0;
}else
ESP_LOGI(TAG,"keeping ... strstr: %ld", (uint32_t)strstr(buf, "departureList"));
//if(!strstr(buf, "departureList")){
// ESP_LOGI(TAG,"tossing ... strstr: %ld", (uint32_t)strstr(buf, "departureList"));
// write_offset=0;
//}else
// ESP_LOGI(TAG,"keeping ... strstr: %ld", (uint32_t)strstr(buf, "departureList"));
} while (1);
buf[write_offset+len+1] = 0;
esp_tls_conn_destroy(tls);
return 0;

111
main/main.c
View File

@@ -22,9 +22,10 @@
#include "wlan.h"
#include "https.h"
#include "cJSON/cJSON.h"
#include "esp_heap_caps.h"
#include "lwjson/lwjson.h"
#ifdef CONFIG_IDF_TARGET_ESP32
#define CHIP_NAME "ESP32"
#endif
@@ -39,7 +40,7 @@ const esp_timer_create_args_t periodic_timer_args = {
};
uint8_t buf_ok = 0;
char bsvg_buf[33000];
char bsvg_buf[40000];
static void https_request_task(void *pvparameters){
while(https_get_request_using_crt_bundle(bsvg_buf, sizeof(bsvg_buf)) != 0){
ESP_LOGE("bsvg", "Failed to get data from server. Retrying...");
@@ -49,15 +50,47 @@ static void https_request_task(void *pvparameters){
vTaskDelete(NULL);
}
//static lwjson_token_t tokens[1100];
//static lwjson_t lwjson;
uint8_t json_ok = 0;
cJSON *departureList;
static void json_parse_task(void *pvparameters){
//uint16_t start_ptr = 0;
//while(buf[start_ptr] != '{' && start_ptr < sizeof(buf))
// start_ptr++;
char *start = strstr(bsvg_buf, "\"departureList\"") + 17;
//char *start = strstr(bsvg_buf, "{");
ESP_LOGI("bsvg", "start at %ld: \"%.10s\"", (uint32_t)start, start);
departureList = cJSON_Parse(start);
//departureList = cJSON_Parse(start);
char *item = start;
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");
}
//lwjson_init(&lwjson, tokens, LWJSON_ARRAYSIZE(tokens));
//if (lwjson_parse(&lwjson, start) == lwjsonOK) {
// const lwjson_token_t* t;
// printf("JSON parsed..\r\n");
// /* Find custom key in JSON */
// if ((t = lwjson_find(&lwjson, "stopID")) != NULL) {
// printf("Key found with data type: %d\r\n", (int)t->type);
// }
// /* Call this when not used anymore */
// lwjson_free(&lwjson);
//}
//else{
// ESP_LOGI("bsvg", "parse fail");
//}
printf("free heap: %d\n", heap_caps_get_free_size( MALLOC_CAP_DEFAULT) );
json_ok = 1;
@@ -108,41 +141,41 @@ void app_main(void)
}
ESP_LOGI("bsvg", "Done");
if (departureList == NULL)
{
ESP_LOGI("bsvg", "did not get list");
const char *error_ptr = cJSON_GetErrorPtr();
heap_caps_print_heap_info(MALLOC_CAP_DEFAULT);
if (error_ptr != NULL)
{
fprintf(stderr, "Error at %ld: %.10s\n", (uint32_t)error_ptr-(uint32_t)bsvg_buf, error_ptr);
fprintf(stderr, "%.100s%.100s\n", error_ptr-100, error_ptr);
fprintf(stderr, " ^\n");
}
else {
fprintf(stderr, "did not get err ptr\n");
}
}else{
ESP_LOGI("bsvg", "got list");
printf("free heap: %d\n", heap_caps_get_free_size( MALLOC_CAP_DEFAULT) );
ESP_LOGI("bsvg", "type: %d", departureList->type);
ESP_LOGI("bsvg", "child: %ld", (uint32_t)departureList->child);
if(cJSON_IsArray(departureList)){
ESP_LOGI("bsvg", "is Array");
const cJSON *departure = NULL;
cJSON_ArrayForEach(departure, departureList){
cJSON *number = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(departure, "servingLine"), "number");;
if(number == NULL)
ESP_LOGI("bsvg", "cant get number");
else if(cJSON_IsNumber(number))
ESP_LOGI("bsvg", "number (int): %d\n", number->valueint);
else if(cJSON_IsString(number))
ESP_LOGI("bsvg", "number (str): %.3s\n", number->valuestring);
else
ESP_LOGI("bsvg", "cant get number value");
}
}
}
//if (departureList == NULL)
//{
// ESP_LOGI("bsvg", "did not get list");
// const char *error_ptr = cJSON_GetErrorPtr();
// heap_caps_print_heap_info(MALLOC_CAP_DEFAULT);
// if (error_ptr != NULL)
// {
// fprintf(stderr, "Error at %ld: %.10s\n", (uint32_t)error_ptr-(uint32_t)bsvg_buf, error_ptr);
// fprintf(stderr, "%.100s%.100s\n", error_ptr-100, error_ptr);
// fprintf(stderr, " ^\n");
// }
// else {
// fprintf(stderr, "did not get err ptr\n");
// }
//}else{
// ESP_LOGI("bsvg", "got list");
// printf("free heap: %d\n", heap_caps_get_free_size( MALLOC_CAP_DEFAULT) );
// ESP_LOGI("bsvg", "type: %d", departureList->type);
// ESP_LOGI("bsvg", "child: %ld", (uint32_t)departureList->child);
// if(cJSON_IsArray(departureList)){
// ESP_LOGI("bsvg", "is Array");
// const cJSON *departure = NULL;
// cJSON_ArrayForEach(departure, departureList){
// cJSON *number = cJSON_GetObjectItemCaseSensitive(cJSON_GetObjectItemCaseSensitive(departure, "servingLine"), "number");;
// if(number == NULL)
// ESP_LOGI("bsvg", "cant get number");
// else if(cJSON_IsNumber(number))
// ESP_LOGI("bsvg", "number (int): %d\n", number->valueint);
// else if(cJSON_IsString(number))
// ESP_LOGI("bsvg", "number (str): %.3s\n", number->valuestring);
// else
// ESP_LOGI("bsvg", "cant get number value");
// }
// }
//}
for (;;) {