关于STM8S IAR 无法下载程序，以及无法进去中断的问题

之前内有用过STM8  一会再用STM32 做一个小项目时 觉得STM8也有库应该很方便就直接选了它，结果调试的时候各种心酸，本想着一天解决的任务，结果拖了三天。接下来介绍一下遇到的主要问题 以及解决方法。

1、IAR无法下载程序问题

 首先关于芯片型号设置就不说了 网上一大堆，主要是Vcap 引脚对地电容的取值，网上普遍说1uF,  由于我做了两个板子 一个PCB一个覆铜板 PCB没问题 ，但是覆铜板1uF 就下不进去程序，后来改成0.1uF才可以。如果软件配置对了，现在不进去很有可能是这个电容的问题。

2、定时器进不去中断问题

 尝试了TIM2 TIM4 都进不去，我是用的是风驰 分享的STM8s207寄存器版本的例程，其他都好 就是定时器不管用，各种都尝试了，就是进不去。后来对比发现 头文件对定时器地址定义不同，大家可以对比看一下 首先是stm8s103.h的头文件中对TIM2的定义

/*-------------------------------------------------------------------------
 *      TIM2 register definitions
 *-----------------------------------------------------------------------*/
/* TIM2 control register 1 */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char CEN         : 1;
  unsigned char UDIS        : 1;
  unsigned char URS         : 1;
  unsigned char OPM         : 1;
  unsigned char             : 3;
  unsigned char ARPE        : 1;
} __BITS_TIM2_CR1;
#endif
__IO_REG8_BIT(TIM2_CR1,    0x5300, __READ_WRITE, __BITS_TIM2_CR1);

/* TIM2 Interrupt enable register */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char UIE         : 1;
  unsigned char CC1IE       : 1;
  unsigned char CC2IE       : 1;
  unsigned char CC3IE       : 1;
  unsigned char             : 2;
  unsigned char TIE         : 1;
} __BITS_TIM2_IER;
#endif
__IO_REG8_BIT(TIM2_IER,    0x5303, __READ_WRITE, __BITS_TIM2_IER);

/* TIM2 status register 1 */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char UIF         : 1;
  unsigned char CC1IF       : 1;
  unsigned char CC2IF       : 1;
  unsigned char CC3IF       : 1;
  unsigned char             : 2;
  unsigned char TIF         : 1;
} __BITS_TIM2_SR1;
#endif
__IO_REG8_BIT(TIM2_SR1,    0x5304, __READ_WRITE, __BITS_TIM2_SR1);

其次是stm8s207头文件对TIM2的定义

/*-------------------------------------------------------------------------
 *      TIM2 register definitions
 *-----------------------------------------------------------------------*/
/* TIM2 control register 1 */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char CEN         : 1;
  unsigned char UDIS        : 1;
  unsigned char URS         : 1;
  unsigned char OPM         : 1;
  unsigned char             : 3;
  unsigned char ARPE        : 1;
} __BITS_TIM2_CR1;
#endif
__IO_REG8_BIT(TIM2_CR1,    0x5300, __READ_WRITE, __BITS_TIM2_CR1);

/* TIM2 interrupt enable register */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char UIE         : 1;
  unsigned char CC1IE       : 1;
  unsigned char CC2IE       : 1;
  unsigned char CC3IE       : 1;
  unsigned char             : 2;
  unsigned char TIE         : 1;
} __BITS_TIM2_IER;
#endif
__IO_REG8_BIT(TIM2_IER,    0x5301, __READ_WRITE, __BITS_TIM2_IER);

/* TIM2 status register 1 */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char UIF         : 1;
  unsigned char CC1IF       : 1;
  unsigned char CC2IF       : 1;
  unsigned char CC3IF       : 1;
  unsigned char             : 2;
  unsigned char TIF         : 1;
} __BITS_TIM2_SR1;
#endif
__IO_REG8_BIT(TIM2_SR1,    0x5302, __READ_WRITE, __BITS_TIM2_SR1);

/* TIM2 status register 2 */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char             : 1;
  unsigned char CC1OF       : 1;
  unsigned char CC2OF       : 1;
  unsigned char CC3OF       : 1;
} __BITS_TIM2_SR2;
#endif
__IO_REG8_BIT(TIM2_SR2,    0x5303, __READ_WRITE, __BITS_TIM2_SR2);

/* TIM2 event generation register */
#ifdef __IAR_SYSTEMS_ICC__
typedef struct
{
  unsigned char UG          : 1;
  unsigned char CC1G        : 1;
  unsigned char CC2G        : 1;
  unsigned char CC3G        : 1;
  unsigned char             : 2;
  unsigned char TG          : 1;
} __BITS_TIM2_EGR;
#endif
__IO_REG8_BIT(TIM2_EGR,    0x5304, __WRITE, __BITS_TIM2_EGR);

具体文档就不找了，很明显地址不对，所以大家在只需要把头文件改成自己所用的单片机即可。