STM32L476 低功耗代码，里面有UART,SPI,I2C通信，在中断配置调用库上都有详细说明，自己总结得资料，好好利用

Version: 2.2.0 (2021-07-22) Keil.STM32F3xx_DFP.2.2.0.pack Updated Pack to STM32Cube_FW_F3 Firmware Package version V1.11.2: Updated HAL to version V1.5.5. External interrupts and events (EXTI) HAL Universal serial bus full-speed device interface (USB) LL Added global define USE_HAL_DRIVER and USE_FULL_LL_DRIVER to the component ::Device:STM32Cube Framework:STM32CubeMX. Added global define USE_HAL_DRIVER and USE_FULL_LL_DRIVER to the component ::Device:STM32Cube HAL:COMMON. STM32CubeMX integration: MX_Device_h.ftl: Updated parsing of USART virtual mode. Updated generation of macros: Added handling for '(' and ')' symbols. FrameworkCubeMX_gpdsc.ftl: Added support for Timebase Source TIMx. Board Examples: Terminating app_main thread with osThreadExit() to avoid endless loop. Updated RTX configuration (CMSIS 5.8.0). Updated template based files (MDK-Middleware 7.13.0). Configured MDK projects to use Arm Compiler 6. Changed Assembler option to armclang (Auto Select). Updated all USB Host/Device examples with user templates from MDK-Middleware v7.11.1. FileSystem, USB: Changed variant selection to "MDK-Plus". Updated Graphics examples to use Segger emWin version 5.50. CMSIS Driver: CAN: Corrected SetBitrate function to leave Silent and Loopback mode as they were. Corrected SetMode function to clear Silent and Loopback mode when NORMAL mode is activated. Corrected MessageSend function to only access required data for sending. Corrected abort message send functionality. I2C: Corrected pin configuration: MX_I2Cx_SMBA_GPIO_PuPdOD replaced with MX_I2Cx_yyy_GPIO_PuPdOD. Corrected usage function name USB Device: Corrected transmitted count for non-control IN endpoints. Updated USBD_EndpointConfigure function to check that maximum packet size requested fits into configured FIFO (compile time configured). Removed include of stm32f3xx_hal_pcd.h header.

Version: 1.4.0 (2021-07-22) Keil.STM32G4xx_DFP.1.4.0.pack CMSIS Flash: Added external Flash Algorithm for STM32G474E-EVAL. Added Option Byte Flash Algorithm example. Board Examples: STM32G474E-EVAL: Migrated example to STM32CubeG4 Firmware Package version V1.4.0. Changed default compiler to Arm Compiler 6. Changed Assembler option to armclang (Auto Select). Updated RTX config files to CMSIS 5.8.0.

Version: 2.6.0 (2021-07-30) Keil.STM32L4xx_DFP.2.6.0.pack Updated Pack to STM32Cube_FW_L4 Firmware Package version V1.17.0 Package Description: Added global define USE_FULL_LL_DRIVER to component ::Device:STM32Cube LL:Common. Added debugProbe board description. Device Support: Updated SVD files and documentation. Reworked device RAM size. Added missing devices: STM32L451CETx, STM32L452CETx, STM32L462CETx, STM32L4Q5CGTxP, STM32L4Q5CGUxP, STM32L4Q5VGTxP, STM32L4Q5QGIxP, STM32L4Q5ZGTxP, STM32L4Q5AGIxP, STM32L4Q5RGTxP. Removed devices: STM32L451RCYx, STM32L452RCYx, STM32L485xx. Updated dbgconf files - Add missing variable DoOptionByteLoading. CMSIS Flash Algorithm: Added algorithm for STM32L4RxxG devices. Updated flash algorithms: STM32L4Rx_2048_Dual, STM32L4P5xx_1M, STM32L4P5xx_512: Added empty check, disable interrupts while programming, fix programming while IWDG in HW mode. Fixed last word programming. CMSIS-Driver: USBH: Fixed port resume occasionally getting stuck in resume signaling. Added compile time configuration for reducing Bulk IN NAK rate. SPI: Updated Control function to: Set SPI bus speed only for master mode and disable DMA before reconfigure DMA Updated SPI_GetStatus function with correct error code Updated SPI_GetDataCount function when SPI is not initialized Board Examples: Updated Assembler option to armclang(Auto Select). Updated config files to CMSIS 5.8.0 and MDK-Middleware 7.13.0.

Version: 1.1.0 (2021-07-23) Keil.STM32U5xx_DFP.1.1.0.pack Updated STM32Cube Firmware U5 library to version V1.0.0 First official release of HAL and LL drivers for STM32U575xx/STM32U585xx devices

Keil MDK5.0 原版软件，适用于STM32系列单片机开发环境，安装后需要使用PJ软件，社区内可以搜索到。

适用于54m以下的12位并口，库函数编写

keil5在使用nrf52832、52810时报缺少pack,里面主要有cmsis 4.5.0以及familypack 8.15.0还有两个softdevice。

MDK5打开MDK4项目工程时出现的不兼容,选择第二种到官网下载，因速度较慢，现将我下好的资源分享出来

我的keil5是MDK524版本，在使用JLink调试时出现JLink Warning:mis-aligned memory write:address:0x20000000,numbytes:2,alignment:2(halfword-aligned)的警告。找到c:\Keil_v5\ARM\segger（Keil安装目录）下的JL2CM3.dll，只要使用老版替换即可。