Add H5 and H7 to health monitor

src/health.c

@@ -6,7 +6,7 @@
 struct mg_health mg_health_record MG_HEALTH_RAM;
 
 // STM32 H723 support. Needs the _estack symbol from the linker script
-#if MG_ENABLE_HEALTH && defined(STM32H723xx_H)
+#if MG_ENABLE_HEALTH && (defined(STM32H7_DEV_ID) || defined(STM32H5))
 // Fault handler body. Runs in exception context: no printf, no malloc, no
 // blocking calls. Copies the unwind registers and raw stack into the health
 // record, then resets.

src/health.h

@@ -9,6 +9,10 @@
 #define MG_HEALTH_MAGIC {'M', 'G', 'H', '3'}  // '3' is the layout version
 #endif
 
+#if !defined(MG_HEALTH_RAM) && (defined(STM32H7_DEV_ID) || defined(STM32H5))
+#define MG_HEALTH_RAM __attribute__((section(".mg_health")))
+#endif
+
 // Places the record in RAM that survives a reset. Define in mongoose_config.h
 // to match the linker script, e.g. __attribute__((section(".mg_health")))
 #ifndef MG_HEALTH_RAM
@@ -30,7 +34,7 @@ enum mg_health_reason {
 };
 
 #ifndef MG_HEALTH_DATA_SIZE
-#define MG_HEALTH_DATA_SIZE 20
+#define MG_HEALTH_DATA_SIZE 250
 #endif
 
 struct mg_health {

src/util.c

@@ -43,11 +43,12 @@ bool mg_random(void *buf, size_t len) {
   success = true;
 #elif MG_ARCH == MG_ARCH_CUBE && defined(HAL_RNG_MODULE_ENABLED)
   extern RNG_HandleTypeDef hrng;
+  success = true;
   for (size_t n = 0; n < len; n += sizeof(uint32_t)) {
-    uint32_t r = HAL_RNG_ReadLastRandomNumber(&hrng);
+    uint32_t r = 0;
+    if (HAL_RNG_GenerateRandomNumber(&hrng, &r) != HAL_OK) success = false;
     memcpy((char *) buf + n, &r, n + sizeof(r) > len ? len - n : sizeof(r));
   }
-  success = true;
 #elif MG_ARCH == MG_ARCH_PICOSDK
   while (len--) *p++ = (unsigned char) (get_rand_32() & 255);
   success = true;