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功能:
1.开机后LED(PC13) 亮0.2s后关闭,0.2s进入stop mode
2.K1~K6 按键外部中断唤醒LED闪烁,结束后继续进入stop mode。
3.TIMER3 200ms自动重装中断;外部中断启动并给定中断次数;计次为0关闭timer3,为进入stop mode 准备。
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STM32L1xx固件库
如何使用STM32L1XX 标准固件库
1. 创建工程并设置所选型号的启动文件
选择相对应MCU型号的启动文件:
* startup_stm32l1xx_md.s: 适用于STM32L Ultra Low Power Medium density devices
* startup_stm32l1xx_mdp.s:适用于STM32L Ultra Low Power Medium density Plus devices
* startup_stm32l1xx_hd.s: 适用于STM32L Ultra Low Power High density devices
* startup_stm32l1xx_xl.s: 适用于STM32L Ultra Low Power XL density devices
上面四种类型所对应的MCU型号分别是:
* Ultra Low Power Medium-density devices: - STM32L151x6xx, STM32L151x8xx, STM32L151xBxx, STM32L152x6xx, STM32L152x8xx, STM32L152xBxx, STM32L151x6xxA, STM32L151x8xxA, STM32L151xBxxA, STM32L152x6xxA, STM32L152x8xxA and STM32L152xBxxA, STM32L100x6xx, STM32L100x8xx and STM32L100xBxx
* Ultra Low Power Medium-density Plus devices: - STM32L151xCxx, STM32L152xCxx and STM32L162xCxx, STM32L100xCxx
* Ultra Low Power High-density devices: STM32L151xDxx, STM32L152xDxx and STM32L162xDxx
* Ultra Low Power XL-density devices: STM32L151xExx, STM32L152xExx and STM32L162xExx
2. 根据所选的MCU型号配置固件库
在 stm32l1xx.h (under Libraries\CMSIS\Device\ST\STM32L1xx\Include)中配置所选的MCU类型,以及使用的外设头文件。
#if !defined (STM32L1XX_MD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_HD) && !defined (STM32L1XX_XL)
/* #define STM32L1XX_MD */ /*!< - Ultra Low Power Medium-densitydevices: STM32L151x6xx, STM32L151x8xx, STM32L151xBxx, STM32L152x6xx, STM32L152x8xx and STM32L152xBxx. - Ultra Low Power Medium-density Value Line devices: STM32L100x6xx,STM32L100x8xx and STM32L100xBxx.*/
/* #define STM32L1XX_MDP */ /*!< - Ultra Low Power Medium-density Plus devices: STM32L151xCxx, STM32L152xCxx and STM32L162xCxx
- Ultra Low Power Medium-density Plus Value Line devices: STM32L100xCxx */
/* #define STM32L1XX_HD */ /*!< Ultra Low Power High-density devices: STM32L151xDxx, STM32L152xDxx and STM32L162xDxx */
/* #define STM32L1XX_XL */ /*!< Ultra Low Power XL-density devices: STM32L151xExx, STM32L152xExx and STM32L162xEx