Flatten mem stats

tutorials/stm32/nucleo-h563zi/cubemx/mongoose/mongoose_config.h

@@ -1,4 +1,5 @@
 #pragma once
+#include <stm32h5xx_hal.h>
 #define MG_ARCH MG_ARCH_CUBE
 #define MG_ENABLE_LFS 1
 #define MG_LFS_SIZE (128 * 1024)

tutorials/stm32/nucleo-h723zg/cubemx-freertos/Core/Inc/FreeRTOSConfig.h

@@ -73,6 +73,7 @@ extern uint32_t SystemCoreClock;
 #define configMAX_TASK_NAME_LEN                  ( 16 )
 #define configHEAP_CLEAR_MEMORY_ON_FREE          0
 #define configUSE_TRACE_FACILITY                 1
+#define configRECORD_STACK_HIGH_ADDRESS          1
 #define configUSE_16_BIT_TICKS                   0
 #define configUSE_MUTEXES                        1
 #define configQUEUE_REGISTRY_SIZE                8

tutorials/stm32/nucleo-h723zg/cubemx-freertos/Core/Src/main.c

@@ -104,8 +104,7 @@ static void http_ev_handler(struct mg_connection *c, int ev, void *ev_data) {
     struct mg_http_message *hm = (struct mg_http_message *) ev_data;
     if (mg_match(hm->uri, mg_str("/api/tick"), NULL)) {
       mg_http_reply(c, 200, "", "{%m:%lu}\n", MG_ESC("tick"), HAL_GetTick());
-    } else if (mg_match(hm->uri, mg_str("/api/kill"), NULL)) {
-      SCB->SHCSR &= ~SCB_SHCSR_USGFAULTENA_Msk;
+    } else if (mg_match(hm->uri, mg_str("/api/crash"), NULL)) {
       __asm volatile("udf #0");
     } else {
       mg_http_reply(c, 200, "Content-Type: text/plain\r\n",
@@ -446,6 +445,11 @@ void StartDefaultTask(void *argument)
   mg_mgr_init(&mgr);
   mg_http_listen(&mgr, "http://0.0.0.0", http_ev_handler, NULL);
 
+  MG_INFO(("Initialised. CPU clock: %lu MHz", SystemCoreClock / 1000000));
+  MG_INFO(("Memory: %M", mg_print_mem_stats));
+  MG_INFO(("Crash record: %s, %M", mg_health_valid() ? "enabled" : "disabled",
+           mg_print_crash_record));
+
   /* Infinite loop */
   for(;;)
   {

tutorials/stm32/nucleo-h723zg/cubemx-freertos/Middlewares/Third_Party/FreeRTOS/Source/tasks.c

@@ -328,6 +328,13 @@ typedef struct tskTaskControlBlock       /* The old naming convention is used to
  * below to enable the use of older kernel aware debuggers. */
 typedef tskTCB TCB_t;
 
+#if ( configRECORD_STACK_HIGH_ADDRESS == 1 )
+    _Static_assert( offsetof( TCB_t, pcTaskName ) == offsetof( StaticTask_t, ucDummy7 ),
+                    "StaticTask_t task-name offset must match TCB_t" );
+    _Static_assert( offsetof( TCB_t, pxEndOfStack ) == offsetof( StaticTask_t, pxDummy8 ),
+                    "StaticTask_t stack-end offset must match TCB_t" );
+#endif
+
 /*lint -save -e956 A manual analysis and inspection has been used to determine
  * which static variables must be declared volatile. */
 portDONT_DISCARD PRIVILEGED_DATA TCB_t * volatile pxCurrentTCB = NULL;

tutorials/stm32/nucleo-h723zg/cubemx-freertos/STM32H723XG_FLASH.ld

@@ -254,4 +254,6 @@ SECTIONS
     libgcc.a:* ( * )
   }
 
+  /* Retained health record. Startup code must neither copy nor clear it. */
+  .mg_health (NOLOAD) : { KEEP(*(.mg_health .mg_health*)) } > RAM_D3
 }

tutorials/stm32/nucleo-h723zg/cubemx-freertos/mongoose/mongoose_config.h

@@ -1,7 +1,11 @@
 #pragma once
 #define MG_ARCH MG_ARCH_CUBE
-#define MG_ENABLE_HEALTH 1
-#define MG_ENABLE_FREERTOS 1
+#define MG_ENABLE_HEALTH 1    // Mem stats and crash reports
+#define MG_ENABLE_FREERTOS 1  // Set configRECORD_STACK_HIGH_ADDRESS
+
+#define MG_ENABLE_MDASH 0   // mdash.net device management service support
+#define MG_MDASH_KEY "..."  // See https://mongoose.ws/docs/guides/mdash/
+#define MG_FIRMWARE_VERSION "h723_cube.1.0.0"
 
 // Ethernet driver tunables:
 // #define MG_DRIVER_MDC_CR 4   // RMII MDC clock divider, from 0 to 5

tutorials/stm32/nucleo-h723zg/cubemx/Core/Src/main.c

@@ -86,22 +86,24 @@ static void MX_USART3_UART_Init(void);
 /* USER CODE BEGIN 0 */
 size_t mg_usage(int task, int metric) {
   extern void *_sbrk(ptrdiff_t incr);
-  extern unsigned char _end, _sstack;
+  extern unsigned char _end, _sstack, _estack;
   extern uint32_t _Min_Stack_Size;
   switch (metric) {
     case MG_USAGE_NUM_TASKS: return 1;
     case MG_USAGE_TASK_NAME: return task == 0 ? (size_t) "main" : 0;
     case MG_USAGE_STACK_TOTAL:
       return task == 0 ? (size_t) &_Min_Stack_Size : 0;
-    case MG_USAGE_STACK_FREE: {
-      size_t sp = (size_t) __get_MSP(), base = (size_t) &_sstack;
-      return task == 0 && sp > base ? sp - base : 0;
+    case MG_USAGE_STACK_USED: {
+      size_t sp = (size_t) __get_MSP();
+      size_t base = (size_t) &_sstack, top = (size_t) &_estack;
+      if (task != 0 || sp > top) return 0;
+      return top - (sp < base ? base : sp);
     }
     case MG_USAGE_HEAP_TOTAL:
       return (size_t) &_sstack - (size_t) &_end;
-    case MG_USAGE_HEAP_FREE: {
-      size_t heap = (size_t) _sbrk(0), limit = (size_t) &_sstack;
-      return limit > heap ? limit - heap : 0;
+    case MG_USAGE_HEAP_USED: {
+      size_t heap = (size_t) _sbrk(0), start = (size_t) &_end;
+      return heap >= start && heap <= (size_t) &_sstack ? heap - start : 0;
     }
     default: return 0;
   }
@@ -121,8 +123,7 @@ static void http_ev_handler(struct mg_connection *c, int ev, void *ev_data) {
     struct mg_http_message *hm = (struct mg_http_message *) ev_data;
     if (mg_match(hm->uri, mg_str("/api/tick"), NULL)) {
       mg_http_reply(c, 200, "", "{%m:%lu}\n", MG_ESC("tick"), HAL_GetTick());
-    } else if (mg_match(hm->uri, mg_str("/api/kill"), NULL)) {
-      SCB->SHCSR &= ~SCB_SHCSR_USGFAULTENA_Msk;
+    } else if (mg_match(hm->uri, mg_str("/api/crash"), NULL)) {
       __asm volatile("udf #0");
     } else {
       mg_http_reply(c, 200, "", "Hi from Mongoose, tick %lu\n%M\n",

tutorials/stm32/nucleo-h723zg/cubemx/mongoose/mongoose_config.h

@@ -1,4 +1,5 @@
 #pragma once
+#include <stm32h7xx_hal.h>
 #define MG_ARCH MG_ARCH_CUBE
 #define MG_ENABLE_HEALTH 1
 #define MG_ENABLE_CUSTOM_USAGE 1

tutorials/stm32/nucleo-h723zg/minimal/main.c

@@ -6,13 +6,17 @@
 
 size_t mg_usage(int task, int metric) {
   extern void *_sbrk(int incr);
+  extern unsigned char _end[], _estack[];
   if (metric == MG_USAGE_NUM_TASKS) return 1;
   if (metric == MG_USAGE_TASK_NAME) return task == 0 ? (size_t) "main" : 0;
-  // Heap and stack share the free gap, neither has a fixed total
-  if (metric == MG_USAGE_HEAP_FREE ||
-      (metric == MG_USAGE_STACK_FREE && task == 0)) {
-    size_t sp = (size_t) __get_MSP(), heap = (size_t) _sbrk(0);
-    return sp > heap ? sp - heap : 0;
+  // Heap and stack share RAM, so neither has a fixed total.
+  if (metric == MG_USAGE_HEAP_USED) {
+    size_t heap = (size_t) _sbrk(0), start = (size_t) _end;
+    return heap >= start && heap <= (size_t) _estack ? heap - start : 0;
+  }
+  if (metric == MG_USAGE_STACK_USED && task == 0) {
+    size_t sp = (size_t) __get_MSP(), top = (size_t) _estack;
+    return sp <= top ? top - sp : 0;
   }
   return 0;
 }