Split sys.h API over MG_SYS_*

src/config.h

@@ -149,11 +149,3 @@
 #define MG_EPOLL_ADD(c)
 #define MG_EPOLL_MOD(c, wr)
 #endif
-
-#ifndef MG_ENABLE_STM32H5
-#define MG_ENABLE_STM32H5 0
-#endif
-
-#ifndef MG_ENABLE_STM32H7
-#define MG_ENABLE_STM32H7 0
-#endif

src/ota.h

@@ -33,5 +33,3 @@ size_t mg_ota_size(int firmware);         // Firmware size
 
 bool mg_ota_commit(void);    // Commit current firmware
 bool mg_ota_rollback(void);  // Rollback to the previous firmware
-
-void mg_sys_reset(void);  // Reboot device immediately

src/ota_dummy.c

@@ -35,6 +35,4 @@ size_t mg_ota_size(int fw) {
   (void) fw;
   return 0;
 }
-void mg_sys_reset(void) {
-}
 #endif

src/sys.h

@@ -3,6 +3,15 @@
 
 #pragma once
 
+#define MG_SYS_NONE 0      // Dummy system
+#define MG_SYS_STM32H5 1   // STM32 H5
+#define MG_SYS_STM32H7 2   // STM32 H7
+#define MG_SYS_CUSTOM 100  // Custom implementation
+
+#ifndef MG_SYS
+#define MG_SYS MG_SYS_NONE
+#endif
+
 // Flash information
 void *mg_flash_start(void);         // Return flash start address
 size_t mg_flash_size(void);         // Return flash size
@@ -19,3 +28,5 @@ bool mg_flash_swap_bank(void);
 // If `sector` is NULL, then the last sector of flash is used
 bool mg_flash_load(void *sector, uint32_t key, void *buf, size_t len);
 bool mg_flash_save(void *sector, uint32_t key, const void *buf, size_t len);
+
+void mg_sys_reset(void);  // Reboot device immediately

src/sys_dummy.c

@@ -0,0 +1,32 @@
+#include "sys.h"
+
+#if MG_SYS == MG_SYS_NONE
+void *mg_flash_start(void) {
+  return NULL;
+}
+size_t mg_flash_size(void) {
+  return 0;
+}
+size_t mg_flash_sector_size(void) {
+  return 0;
+}
+size_t mg_flash_write_align(void) {
+  return 0;
+}
+int mg_flash_bank(void) {
+  return 0;
+}
+bool mg_flash_erase(void *location) {
+  (void) location;
+  return false;
+}
+bool mg_flash_swap_bank(void) {
+  return true;
+}
+bool mg_flash_write(void *addr, const void *buf, size_t len) {
+  (void) addr, (void) buf, (void) len;
+  return false;
+}
+void mg_sys_reset(void) {
+}
+#endif

src/sys_stm32h5.c

@@ -2,7 +2,7 @@
 #include "log.h"
 #include "ota.h"
 
-#if MG_ENABLE_STM32H5
+#if MG_SYS == MG_SYS_STM32H5
 
 #define FLASH_BASE 0x40022000          // Base address of the flash controller
 #define FLASH_KEYR (FLASH_BASE + 0x4)  // See RM0481 7.11

src/sys_stm32h7.c

@@ -2,7 +2,7 @@
 #include "log.h"
 #include "ota.h"
 
-#if MG_ENABLE_STM32H7
+#if MG_SYS == MG_SYS_STM32H7
 
 #define FLASH_BASE1 0x52002000  // Base address for bank1
 #define FLASH_BASE2 0x52002100  // Base address for bank2