Обновление до версии 0.3.0

- обновлен elbear_fw_bootloader - добавлена проверка контрольной суммы каждой строки hex файла.
- в модуль работы с АЦП добавлена функция analogReadResolution(). Функция analogRead() теперь возвращает усредненное по 10 измерениям значение.
- общая функция обработки прерываний перенесена в память RAM. Обработчики прерываний модулей External Interrupts и Advanced I/O (функция tone()) так же перенесены в память RAM для увеличения скорости выполнения кода.
- в пакет добавлены библиотеки EEPROM, Servo, SoftSerial, NeoPixel, MFRC522 адаптированные для работы с платой Elbear Ace-Uno.
- добавлено описание особенностей работы с пакетом

cores/arduino/mik32/shared/ldscripts/ram.ld

@@ -10,36 +10,52 @@ MEMORY {
 }
 
 STACK_SIZE = 1024;
+HEAP_SIZE = 1024;
 
 CL_SIZE = 16;
 
 SECTIONS {
     .text ORIGIN(ram) : {
         PROVIDE(__TEXT_START__ = .);
-        *crt0.o(.text .text.*)
+        *crt0.S.o(.text .text.*)
         *(.text.smallsysteminit)
         *(.text.SmallSystemInit)
         . = ORIGIN(ram) + 0xC0;
-        KEEP(*crt0.o(.trap_text))
+        KEEP(*crt0.S.o(.trap_text))
 
         *(.text)
         *(.text.*)
         *(.rodata)
         *(.rodata.*)      
         . = ALIGN(CL_SIZE);
-        PROVIDE(__TEXT_END__ = .);
     } >ram 
 
+    .init_array (READONLY) :
+	{
+	  PROVIDE_HIDDEN (__init_array_start = .);
+	  KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+	  KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+	  PROVIDE_HIDDEN (__init_array_end = .);
+	  
+	  PROVIDE_HIDDEN (__fini_array_start = .);
+	  KEEP(*(SORT_BY_INIT_PRIORITY(.fini_array.*)))
+	  KEEP(*(.fini_array))
+	  PROVIDE_HIDDEN (__fini_array_end   = .); 
+		
+	  PROVIDE(__TEXT_END__ = .);
+	} >ram AT>ram 
+
     .data : 
     AT( __TEXT_END__ ) {
         PROVIDE(__DATA_START__ = .);
         _gp = .;
         *(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata*)
-        *(.sdata .sdata.* .gnu.linkonce.s.*)
+        *(.sdata .sdata.* .sdata* .sdata*.* .gnu.linkonce.s.*)
         *(.data .data.*)
+        *(.ramfunc) 
         . = ALIGN(CL_SIZE);
-    } >ram
-    
+    } >ram 
+
     __DATA_IMAGE_START__ = LOADADDR(.data);
     __DATA_IMAGE_END__ = LOADADDR(.data) + SIZEOF(.data);
     ASSERT(__DATA_IMAGE_END__ < ORIGIN(ram) + LENGTH(ram) - STACK_SIZE, "Data image overflows ram section")
@@ -72,12 +88,19 @@ SECTIONS {
         PROVIDE(__BSS_END__ = .);
     } >ram
 
+    .heap : {
+        PROVIDE(__heap_start = .);
+        . += HEAP_SIZE;
+        . = ALIGN(CL_SIZE);
+        PROVIDE(__heap_end = .);
+    } >ram
+
     _end = .;
     PROVIDE(__end = .);
 
     /* End of uninitalized data segement */
 
-    .stack ORIGIN(ram) + LENGTH(ram) - STACK_SIZE : {
+    .stack ORIGIN(ram) + LENGTH(ram) - STACK_SIZE: {
         FILL(0);
         PROVIDE(__STACK_START__ = .);
         . += STACK_SIZE;

cores/arduino/mik32/shared/ldscripts/spifi_cpp.ld

@@ -21,8 +21,8 @@ SECTIONS {
         *crt0.S.o(.text .text.*)
         *(.text.smallsysteminit)
         *(.text.SmallSystemInit)
-        . = ORIGIN(rom) + 0xC0;
-        KEEP(*crt0.S.o(.trap_text))
+        /*. = ORIGIN(rom) + 0xC0;*/
+        /*KEEP(*crt0.S.o(.trap_text))*/
 
         *(.text)
         *(.text.*)
@@ -50,15 +50,17 @@ SECTIONS {
     AT( __TEXT_END__ ) {
         PROVIDE(__DATA_START__ = .);
         _gp = .;
+        . = ORIGIN(ram) + 0xC0;
+        KEEP(*crt0.S.o(.trap_text))
         *(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata*)
         *(.sdata .sdata.* .sdata* .sdata*.* .gnu.linkonce.s.*)
         *(.data .data.*)
         . = ALIGN(CL_SIZE);
+        PROVIDE(__DATA_END__ = .);
     } >ram
     
     __DATA_IMAGE_START__ = LOADADDR(.data);
     __DATA_IMAGE_END__ = LOADADDR(.data) + SIZEOF(.data);
-    ASSERT(__DATA_IMAGE_END__ < ORIGIN(rom) + LENGTH(rom), "Data image overflows rom section")
 
     /* thread-local data segment */
     .tdata : {
@@ -84,10 +86,26 @@ SECTIONS {
 
     .bss : {
         *(.bss .bss.*)
+        *(COMMON)
         . = ALIGN(CL_SIZE);
         PROVIDE(__BSS_END__ = .);
     } >ram
 
+    /* Code intended to be copied to REGION_RAM before execution */
+    .ram_text : 
+    AT( ALIGN(__DATA_IMAGE_END__, CL_SIZE) ) {
+        PROVIDE(__RAM_TEXT_START__ = .);
+        *(.ram_text)
+        . = ALIGN(CL_SIZE);
+        PROVIDE(__RAM_TEXT_END__ = .);
+    } > ram
+
+    __RAM_TEXT_IMAGE_START__ = LOADADDR(.ram_text);
+    __RAM_TEXT_IMAGE_END__ = LOADADDR(.ram_text) + SIZEOF(.ram_text);
+    ASSERT(__RAM_TEXT_IMAGE_END__ < ORIGIN(rom) + LENGTH(rom), "rom segment overflows")
+
+    ASSERT(__RAM_TEXT_END__ < ORIGIN(ram) + LENGTH(ram) - STACK_SIZE - HEAP_SIZE, "REGION_RAM section overflows")
+
     .heap : {
         PROVIDE(__heap_start = .);
         . += HEAP_SIZE;

cores/arduino/mik32/shared/runtime/crt0.S

@@ -62,6 +62,11 @@ memset_2:
 
 _start:
     
+    li t0, 128000
+    start_loop_delay:
+    nop
+    addi t0, t0, -1
+    bnez t0, start_loop_delay
     # Init stack and global pointer
     #
     la_abs  sp, __C_STACK_TOP__
@@ -73,20 +78,19 @@ _start:
     la_abs  a2, __DATA_IMAGE_END__
     la_abs  a3, __DATA_START__
     memcpy  a1, a2, a3, t0
+
+    # Init ramfunc
+    #
+    la_abs  a1, __RAM_TEXT_IMAGE_START__
+    la_abs  a2, __RAM_TEXT_IMAGE_END__
+    la_abs  a3, __RAM_TEXT_START__
+    memcpy  a1, a2, a3, t0
     
     # Clear bss
     #
     la_abs  a1, __BSS_START__
     la_abs  a2, __BSS_END__
     memset a1, a2, zero
-
-    #ifdef MIK32V0
-    # Enable pad_config clocking
-    #
-    li t0, (1 << 3)
-    li t1, 0x50014
-    sw t0, (t1)
-    #endif
     
     jalr_abs ra, SmallSystemInit
     jalr_abs ra, SystemInit