MSP430 single-chip DCO initialization

"1. Platform description MSP430F5438. 2. Aclk selects xt1 with a frequency of 32.768k, MCLK and smclk selects dcoclkdiv with a frequency of 8000K. //Auxiliary clock aclk32.768k //System clock subsystem clock 8000K #include“inc/hw_ memmap.h” #include“ucs.h” #include“wdt_ a.h” #include“gpio.h” #include“sfr.h” voidmain（void） { //Stop the watchdog WDT_ A_ hold（WDT_ A_ BASE）; //P4.0 maintain output state GPIO_ setAsOutputPin（GPIO_ PORT_ P4，GPIO_ PIN0）; //Initialize p7.0 and p7.1 as multiplexing function GPIO_ setAsPeripheralModuleFunctionInputPin（GPIO_ PORT_ P7，GPIO_ PIN0|GPIO_ PIN1）; //Start xt1 UCS_ LFXT1Start（UCS_ BASE，UCS_ XT1_ DRIVE0，UCS_ XCAP_ 3）; //The DCO reference clock selects xt1 and the default parameter is selected //UCS_ clockSignalInit（UCS_ BASE，UCS_ FLLREF，UCS_ XT1CLK_ SELECT，UCS_ CLOCK_ DIVIDER_ 1）; //DCO clock 8MHz //The second parameter of the function is the system working frequency 8000K, and the third parameter is the working frequency / DCO reference frequency UCS_ initFLLSettle（UCS_ BASE，8000，244）; //Enable global interrupt __ bis_ SR_ register（GIE）; while（1） { //Flip P4.0 GPIO_ toggleOutputOnPin（GPIO_ PORT_ P4，GPIO_ PIN0）; //Software delay __ delay_ cycles（1000000）; } } From the perspective of code, using mspware makes programming more concise and modification more convenient. Finally, add UCS_ Getsmclk and other functions verify the results, and the code is as follows: //Auxiliary clock aclk32.768k //System clock subsystem clock 8000K #include“inc/hw_ memmap.h” #include“ucs.h” #include“wdt_ a.h” #include“gpio.h” #include“sfr.h” uint32_ tclockValue_ ACLK=0; uint32_ tclockValue_ MCLK=0; uint32_ tclockValue_ SMCLK=0; voidmain（void） { //uint16_ tstatus; //Stop the watchdog WDT_ A_ hold（WDT_ A_ BASE）; //P4.0 maintain output state GPIO_ setAsOutputPin（GPIO_ PORT_ P4，GPIO_ PIN0）; //Initialize p7.0 and p7.1 as multiplexing function GPIO_ setAsPeripheralModuleFuncTIonInputPin（GPIO_ PORT_ P7，GPIO_ PIN0|GPIO_ PIN1）; //Start xt1 UCS_ LFXT1Start（UCS_ BASE，UCS_ XT1_ DRIVE0，UCS_ XCAP_ 3）; //Xt1 is selected for DCO reference clock, and the default parameter is actually selected //UCS_ clockSignalInit（UCS_ BASE，UCS_ FLLREF，UCS_ XT1CLK_ SELECT，UCS_ CLOCK_ DIVIDER_ 1）; //DCO clock 8MHz //The second parameter of the function is the system working frequency 8000K, and the third parameter is the working frequency / DCO reference frequency UCS_ initFLLSettle（UCS_ BASE，8000，244）; //This function needs to be called if xt1 or XT2 is used UCS_ setExternalClockSource（UCS_ BASE，32768，8000000）; clockValue_ SMCLK=UCS_ getSMCLK（UCS_ BASE）; clockValue_ MCLK=UCS_ getMCLK（UCS_ BASE）; clockValue_ ACLK=UCS_ getACLK（UCS_ BASE）; //Enable global interrupt __ bis_ SR_ register（GIE）; while（1） { //Flip P4.0 GPIO_ toggleOutputOnPin（GPIO_ PORT_ P4，GPIO_ PIN0）; //Software delay __ delay_ cycles（1000000）; } }, read the full text, technical section Why can't the other of PIC MCU get in for external interrupt DCO initialization of MSP430 Single Chip Microcomputer Design of RTC clock for stm8 single chip microcomputer Driving ads1246 chip by STM32 single chip microcomputer STM32 MCU can bus configuration, Download enthusiast app Create an electronic circle of your contacts Pay attention to wechat of electronic enthusiasts Interesting and informative information and technology dry goods Focus on enthusiast class Lock in the live broadcast of the latest course activities and technologies and collect them 0 collections Share:, comment Lin Chaowen PCB Design: pads tutorial, pads video tutorial, Zheng Zhenyu teacher: Altium designer tutorial, Altium designer video tutorial, Zhang Fei actual combat electronic video tutorial, Zhu Youpeng teacher: Hisilicon hi3518e tutorial, hi3518e video tutorial, Li Zeng teacher: signal integrity tutorial, high-speed circuit simulation tutorial, Huawei Hongmeng system tutorial, harmonyos video tutorial, saisheng: EMC design tutorial, EMC video tutorial Mr. Du Yang: STM32 tutorial, STM32 video tutorial, Tang zuolin: basic C language tutorial, basic C language video tutorial, Zhang Fei: Buck Power tutorial, buck power video tutorial, punctual atom: FPGA tutorial, FPGA video tutorial, Mr. Wei Dongshan: embedded tutorial, Embedded video tutorial Zhang Xianfeng: C language basic video tutorial Xu Xiaogang: Modbus communication video tutorial Wang Zhentao: NB IOT development video tutorial mill: FPGA tutorial, zynq video tutorial c language video tutorial linux driver development video tutorial Zhu Youpeng: u-boot source code analysis video tutorial harmonyos,  Press and hold the slider and drag to the far right Learn about new features Published, relevant recommendations Programming method of interrupt function of MSP430 Single Chip Microcomputer #pragmavector=USCI_ A0_ VECTOR __ interruptvoidUSC... 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