add best difficulty since system boot (#162)

main/http_server/axe-os/src/app/components/home/home.component.html

@@ -68,13 +68,17 @@
                             <div class="flex justify-content-between mb-3">
                                 <div>
                                     <span class="block text-500 font-medium mb-3">Best Difficulty</span>
-                                    <div class="text-900 font-medium text-xl">{{info.bestDiff}}</div>
+                                    <div class="text-900 font-medium text-xl">{{info.bestDiff}}
+                                        <span class="text-500">all-time best</span>
+                                    </div>
                                 </div>
                                 <div class="flex align-items-center justify-content-center bg-yellow-100 border-round"
                                     [ngStyle]="{width: '2.5rem', height: '2.5rem'}">
                                     <i class="pi pi-star-fill text-yellow-500 text-xl"></i>
                                 </div>
                             </div>
+                            <span class="text-900 font-medium">{{info.bestSessionDiff}} </span>
+                            <span class="text-500">since system boot</span>
                             <!-- <span class="text-green-500 font-medium">520 </span>
                             <span class="text-500">newly registered</span> -->
                         </div>

main/http_server/axe-os/src/app/services/system.service.ts

@@ -28,6 +28,7 @@ export class SystemService {
           temp: 60,
           hashRate: 475,
           bestDiff: "0",
+          bestSessionDiff: "0",
           freeHeap: 200504,
           coreVoltage: 1200,
           coreVoltageActual: 1200,

main/http_server/axe-os/src/models/ISystemInfo.ts

@@ -11,6 +11,7 @@ export interface ISystemInfo {
     temp: number,
     hashRate: number,
     bestDiff: string,
+    bestSessionDiff: string,
     freeHeap: number,
     coreVoltage: number,
     hostname: string,

main/http_server/http_server.c

@@ -354,6 +354,7 @@ static esp_err_t GET_system_info(httpd_req_t * req)
     cJSON_AddNumberToObject(root, "temp", GLOBAL_STATE->POWER_MANAGEMENT_MODULE.chip_temp);
     cJSON_AddNumberToObject(root, "hashRate", GLOBAL_STATE->SYSTEM_MODULE.current_hashrate);
     cJSON_AddStringToObject(root, "bestDiff", GLOBAL_STATE->SYSTEM_MODULE.best_diff_string);
+    cJSON_AddStringToObject(root, "bestSessionDiff", GLOBAL_STATE->SYSTEM_MODULE.best_session_diff_string);
 
     cJSON_AddNumberToObject(root, "freeHeap", esp_get_free_heap_size());
     cJSON_AddNumberToObject(root, "coreVoltage", nvs_config_get_u16(NVS_CONFIG_ASIC_VOLTAGE, CONFIG_ASIC_VOLTAGE));

main/system.c

@@ -44,6 +44,7 @@ static void _init_system(GlobalState * global_state, SystemModule * module)
     module->shares_accepted = 0;
     module->shares_rejected = 0;
     module->best_nonce_diff = nvs_config_get_u64(NVS_CONFIG_BEST_DIFF, 0);
+    module->best_session_nonce_diff = 0;
     module->start_time = esp_timer_get_time();
     module->lastClockSync = 0;
     module->FOUND_BLOCK = false;
@@ -57,6 +58,7 @@ static void _init_system(GlobalState * global_state, SystemModule * module)
 
     // set the best diff string
     _suffix_string(module->best_nonce_diff, module->best_diff_string, DIFF_STRING_SIZE, 0);
+    _suffix_string(module->best_session_nonce_diff, module->best_session_diff_string, DIFF_STRING_SIZE, 0);
 
     // set the ssid string to blank
     memset(module->ssid, 0, 20);
@@ -269,6 +271,11 @@ static double _calculate_network_difficulty(uint32_t nBits)
 
 static void _check_for_best_diff(SystemModule * module, double diff, uint32_t nbits)
 {
+    if ((uint64_t) diff > module->best_session_nonce_diff) {
+        module->best_session_nonce_diff = (uint64_t) diff;
+        _suffix_string((uint64_t) diff, module->best_session_diff_string, DIFF_STRING_SIZE, 0);
+    }
+
     if ((uint64_t) diff <= module->best_nonce_diff) {
         return;
     }

main/system.h

@@ -23,6 +23,8 @@ typedef struct
     char oled_buf[20];
     uint64_t best_nonce_diff;
     char best_diff_string[DIFF_STRING_SIZE];
+    uint64_t best_session_nonce_diff;
+    char best_session_diff_string[DIFF_STRING_SIZE];
     bool FOUND_BLOCK;
     bool startup_done;
     char ssid[20];