【转】STM8 块操作

这是我的实验例程，板子是stm8s207s6，函数的意思很明确，不再解释，下面开始解析配置步骤！
/**
@code
All the functions defined below must be executed from RAM exclusively, except
for the FLASH_WaitForLastOperation function which can be executed from Flash.
Steps of the execution from RAM differs from one toolchain to another:
- For Cosmic Compiler:
    1- Define a segment FLASH_CODE by the mean of " #pragma section (FLASH_CODE)".
    This segment is defined in the stm8s_flash.c file.
  2- Uncomment the "#define RAM_EXECUTION  (1)" line in the stm8s.h file,
    or define it in Cosmic compiler preprocessor to enable the FLASH_CODE segment
   definition.
  3- In STVD Select Project\Settings\Linker\Category "input" and in the RAM section
    add the FLASH_CODE segment with "-ic" options.
  4- In main.c file call the _fctcpy() function with first segment character as
    parameter "_fctcpy('F');" to load the declared moveable code segment
    (FLASH_CODE) in RAM before execution.
  5- By default the _fctcpy function is packaged in the Cosmic machine library,
    so the function prototype "int _fctcopy(char name);" must be added in main.c
    file.
解析（stvd+cosmic+4.0官方库函数）：
  第一步：#pragma section (FLASH_CODE）库函数stm8s_flash.c中代码第520行已经有了，并且没被注释掉，原型为：
#if defined (_COSMIC_) && defined (RAM_EXECUTION)
#pragma section (FLASH_CODE)
#endif  /* _COSMIC_ && RAM_EXECUTION */
IN_RAM(FLASH_Status_TypeDef FLASH_WaitForLastOperation(FLASH_MemType_TypeDef FLASH_MemType))
{
      ......//库函数代码
}
IN_RAM(void FLASH_EraseBlock(uint16_t BlockNum, FLASH_MemType_TypeDef FLASH_MemType))
{
    ......库函数代码
}
IN_RAM(void FLASH_ProgramBlock(uint16_t BlockNum, FLASH_MemType_TypeDef FLASH_MemType,
                        FLASH_ProgramMode_TypeDef FLASH_ProgMode, uint8_t *Buffer))
{
     ......//库函数代码
}
#if defined (_COSMIC_) && defined (RAM_EXECUTION)
/* End of FLASH_CODE section */
#pragma section ()
#endif /* _COSMIC_ && RAM_EXECUTION */

第二步：打开宏开关#define RAM_EXECUTION  (1)，在stm8s.h中
#if !defined (RAM_EXECUTION)
#define RAM_EXECUTION  (1)
#endif /* RAM_EXECUTION */
第三步：工程设置

第四步：在main.c中声明int _fctcpy(char name);在主函数运行前调用_fctcpy('F');具体操作可参考主函数代码
      这几步都配置完成后就可以编译通过了，然后烧录调试完美块编程，包括快擦除等，已经验证！
      借此说下王志杰的例程我实验过，但是写0就挂掉，不知道什么原因，还有两把密钥的顺序不是随便的，解锁eeprom时顺序是0xae,0x56，解锁flash时顺序是0x56,0xae，我见过网上有人说顺序不分的，纠正下，不要误人子弟！
      网上关于stm8s的学习资料很多很泛滥，其实有用的就那点，等我抽时间整理出一套来分享，以便后人学习！

/* MAIN.C file
*
* Copyright (c) 2002-2005 STMicroelectronics
*/
#include "stm8s.h"
#include <stdio.h>
int _fctcpy(char name);
main()
{
u8 block_buff[128] ={0};
u8 i = 0;
u8 c = 0;
_fctcpy('F');

CLK_DeInit();
  CLK_HSICmd(ENABLE);
CLK_SYSCLKConfig(CLK_PRESCALER_HSIDIV1);

  UART1_DeInit();
  UART1_Init((u32)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO,
UART1_SYNCMODE_CLOCK_DISABLE,UART1_MODE_TXRX_ENABLE);
  UART1_ITConfig(UART1_IT_RXNE_OR, ENABLE);
  UART1_Cmd(ENABLE);
  
GPIO_DeInit(GPIOD);
  GPIO_Init(GPIOD, GPIO_PIN_LNIB, GPIO_MODE_OUT_PP_LOW_FAST);

for(i=0;i<128;i++)
   block_buff=i;

  FLASH_DeInit();
  FLASH_Unlock(FLASH_MEMTYPE_DATA);
  FLASH_SetProgrammingTime(FLASH_PROGRAMTIME_TPROG);
  FLASH_ProgramBlock(0x0001, FLASH_MEMTYPE_DATA, FLASH_PROGRAMMODE_STANDARD, block_buff);
FLASH_EraseBlock(0x0001, FLASH_MEMTYPE_DATA);

c = FLASH_ReadByte(0x40ff);//读出值到变量中
printf("c=%x\r\n",(u16)c);//打印
c = FLASH_ReadByte(0x407f);
printf("c=%x\r\n",(u16)c);
c = FLASH_ReadByte(0x4080);
printf("c=%x\r\n",(u16)c);
c = FLASH_ReadByte(0x4100);
printf("c=%x\r\n",(u16)c);

_asm("rim");
while (1)
  {
  GPIO_WriteHigh(GPIOD, GPIO_PIN_LNIB);
}
}
char putchar (char c)    //串口打印重定向，只要有这个函数，然后包含stdio.h就可以直接调用打印函数了，若有不成功时请把参数前强转为（u16）
{
  if (c == '\n')
  {
    /* put '\r' to hardware here */
    /* Wait transmission is completed : otherwise the first data is not sent */
    while (!(UART1->SR & 0x40));
    UART1->DR = ('\r');
    /* Wait transmission is completed */
    while (!(UART1->SR & 0x40));
}
  /* put c to hardware here */
  /* Wait transmission is completed : otherwise the first data is not sent */
  while (!(UART1->SR & 0x80));
  UART1->DR = (c);
  /* Wait transmission is completed */
  while (!(UART1->SR & 0x80));
  return (c);
}

copy到RAM里面执行，在STVD中有两种方法，1;通过定义一个数组code_to_flash[]将程序代码拷贝到该数组中然后通过汇编指令_asm("call _code_to_flash")的方法实现
2;另一种方法是通过stvd的的函数stcopy()，结合段得定义的来实现。