Implement saftey memory dump feature and increase heap space

stm-firmware/include/reflow-controller/safety/safety-memory.h

@@ -22,6 +22,7 @@
 #define __SAFETY_MEMORY_H__
 
 #include <stdint.h>
+#include <stddef.h>
 
 /** @addtogroup safety-memory
  * @{
@@ -245,6 +246,15 @@ int safety_memory_get_config_override_count(uint32_t *count);
  */
 int safety_memory_get_config_override(uint32_t idx, struct config_override *config_override);
 
+/**
+ * @brief Get a base64 dump of the whole safety memory.
+ * @param[out] buffer Buffer to write the base 64 dump into.
+ * @param buffsize Size of buffer. Must be large enough to hold the data plus a '\0' terminator
+ * @param[out] used_size Number of written bytes including the '\0' terminator. May be NULL.
+ * @return 0 if successful
+ */
+int safety_memory_dump_base64(char *buffer, size_t buffsize, size_t *used_size);
+
 #endif /* __SAFETY_MEMORY_H__ */
 
 /** @} */

stm-firmware/include/stm-periph/backup-ram.h

@@ -55,3 +55,5 @@ int backup_ram_get_data(uint32_t addr, uint32_t *data, uint32_t count);
 int backup_ram_write_data(uint32_t addr, const uint32_t *data, uint32_t count);
 
 uint32_t backup_ram_get_size_in_words(void);
+
+volatile void *backup_ram_get_base_ptr(void);