采用锯齿波方法，意思就是数到reload值，归0
T4 T5 T6各有CHA CHB 2路
GCMBR 为比较寄存器，在这个点进行比较，注意别大于peroad值。。。。它的一半就是50%占空比咯
主要设置这部分
stcAdtTIM4ACfg.enPerc = AdtCHxPeriodLow; //计数值与周期匹配时CHA电平保持不变
stcAdtTIM4ACfg.enCmpc = AdtCHxCompareHigh; //计数值与比较值A匹配时，CHA电平为高
stcAdtTIM4ACfg.enStaStp = AdtCHxStateSelSS; //CHA起始结束电平由STACA与STPCA控制
stcAdtTIM4ACfg.enStaOut = AdtCHxPortOutLow; //CHA起始电平为低
stcAdtTIM4ACfg.enStpOut = AdtCHxPortOutLow; //CHA结束电平为低
上面这样设置，到达比较值 GCMBR 的值时，就变高，冲进计数的时为0 就和我们其他芯片的PWM输出差不多了，这里可以很方便做一些其他应用了，例如想翻转什么鬼的，我这里只是简单测试一下而已
/****************************************************************************** * Copyright (C) 2017, Huada Semiconductor Co.,Ltd All rights reserved. * * This software is owned and published by: * Huada Semiconductor Co.,Ltd ("HDSC"). * * BY DOWNLOADING, INSTALLING OR USING THIS SOFTWARE, YOU AGREE TO BE BOUND * BY ALL THE TERMS AND CONDITIONS OF THIS AGREEMENT. * * This software contains source code for use with HDSC * components. This software is licensed by HDSC to be adapted only * for use in systems utilizing HDSC components. HDSC shall not be * responsible for misuse or illegal use of this software for devices not * supported herein. HDSC is providing this software "AS IS" and will * not be responsible for issues arising from incorrect user implementation * of the software. * * Disclaimer: * HDSC MAKES NO WARRANTY, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE, * REGARDING THE SOFTWARE (INCLUDING ANY ACOOMPANYING WRITTEN MATERIALS), * ITS PERFORMANCE OR SUITABILITY FOR YOUR INTENDED USE, INCLUDING, * WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, THE IMPLIED * WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE, AND THE IMPLIED * WARRANTY OF NONINFRINGEMENT. * HDSC SHALL HAVE NO LIABILITY (WHETHER IN CONTRACT, WARRANTY, TORT, * NEGLIGENCE OR OTHERWISE) FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT * LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, * LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING FROM USE OR * INABILITY TO USE THE SOFTWARE, INCLUDING, WITHOUT LIMITATION, ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS OF DATA, * SAVINGS OR PROFITS, * EVEN IF Disclaimer HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * YOU ASSUME ALL RESPONSIBILITIES FOR SELECTION OF THE SOFTWARE TO ACHIEVE YOUR * INTENDED RESULTS, AND FOR THE INSTALLATION OF, USE OF, AND RESULTS OBTAINED * FROM, THE SOFTWARE. * * This software may be replicated in part or whole for the licensed use, * with the restriction that this Disclaimer and Copyright notice must be * included with each copy of this software, whether used in part or whole, * at all times. */ /******************************************************************************/ /** \file main.c ** ** A detailed description is available at ** @link Sample Group Some description @endlink ** ** - 2019-04-19 Husj First Version ** ******************************************************************************/ /****************************************************************************** * Include files ******************************************************************************/ #include "adt.h" #include "gpio.h" #include "flash.h" /****************************************************************************** * Local pre-processor symbols/macros ('#define') ******************************************************************************/ /****************************************************************************** * Global variable definitions (declared in header file with 'extern') ******************************************************************************/ /****************************************************************************** * Local type definitions ('typedef') ******************************************************************************/ /****************************************************************************** * Local function prototypes ('static') ******************************************************************************/ /****************************************************************************** * Local variable definitions ('static') * ******************************************************************************/ /***************************************************************************** * Function implementation - global ('extern') and local ('static') ******************************************************************************/ ///< AdvTimer端口初始化 void App_AdvTimerPortInit(void) { stc_gpio_cfg_t stcTIM4Port; DDL_ZERO_STRUCT(stcTIM4Port); Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE); //端口外设时钟使能 stcTIM4Port.enDir = GpioDirOut; //P34设置为TIM4_CHA Gpio_Init(GpioPort3, GpioPin4, &stcTIM4Port); Gpio_SetAfMode(GpioPort3,GpioPin4,GpioAf5); //P35设置为TIM4_CHB Gpio_Init(GpioPort3, GpioPin5, &stcTIM4Port); Gpio_SetAfMode(GpioPort3,GpioPin5,GpioAf5); Gpio_Init(GpioPort0, GpioPin3, &stcTIM4Port); Gpio_SetAfMode(GpioPort0,GpioPin3,GpioAf3); } ///< AdvTimer初始化 void App_AdvTimerInit(uint16_t u16Period, uint16_t u16CHA_PWMDuty, uint16_t u16CHB_PWMDuty) { en_adt_compare_t enAdtCompareA; en_adt_compare_t enAdtCompareB; stc_adt_basecnt_cfg_t stcAdtBaseCntCfg; stc_adt_CHxX_port_cfg_t stcAdtTIM4ACfg; stc_adt_CHxX_port_cfg_t stcAdtTIM4BCfg; DDL_ZERO_STRUCT(stcAdtBaseCntCfg); DDL_ZERO_STRUCT(stcAdtTIM4ACfg); DDL_ZERO_STRUCT(stcAdtTIM4BCfg); Sysctrl_SetPeripheralGate(SysctrlPeripheralAdvTim, TRUE); //ADT外设时钟使能 stcAdtBaseCntCfg.enCntMode = AdtSawtoothMode; //锯齿波模式 stcAdtBaseCntCfg.enCntDir = AdtCntUp; stcAdtBaseCntCfg.enCntClkDiv = AdtClkPClk0; Adt_Init(M0P_ADTIM4, &stcAdtBaseCntCfg); //ADT载波、计数模式、时钟配置 Adt_SetPeriod(M0P_ADTIM4, u16Period); //周期设置 enAdtCompareA = AdtCompareA; Adt_SetCompareValue(M0P_ADTIM4, enAdtCompareA, u16CHA_PWMDuty); //通用比较基准值寄存器A设置 enAdtCompareB = AdtCompareB; Adt_SetCompareValue(M0P_ADTIM4, enAdtCompareB, u16CHB_PWMDuty); //通用比较基准值寄存器B设置 stcAdtTIM4ACfg.enCap = AdtCHxCompareOutput; //比较输出 stcAdtTIM4ACfg.bOutEn = TRUE; //CHA输出使能 stcAdtTIM4ACfg.enPerc = AdtCHxPeriodLow; //计数值与周期匹配时CHA电平保持不变 stcAdtTIM4ACfg.enCmpc = AdtCHxCompareHigh; //计数值与比较值A匹配时，CHA电平翻转 stcAdtTIM4ACfg.enStaStp = AdtCHxStateSelSS; //CHA起始结束电平由STACA与STPCA控制 stcAdtTIM4ACfg.enStaOut = AdtCHxPortOutLow; //CHA起始电平为低 stcAdtTIM4ACfg.enStpOut = AdtCHxPortOutLow; //CHA结束电平为低 Adt_CHxXPortCfg(M0P_ADTIM4, AdtCHxA, &stcAdtTIM4ACfg); //端口CHA配置 stcAdtTIM4BCfg.enCap = AdtCHxCompareOutput; stcAdtTIM4BCfg.bOutEn = TRUE; stcAdtTIM4BCfg.enPerc = AdtCHxPeriodInv; stcAdtTIM4BCfg.enCmpc = AdtCHxCompareInv; stcAdtTIM4BCfg.enStaStp = AdtCHxStateSelSS; stcAdtTIM4BCfg.enStaOut = AdtCHxPortOutLow; stcAdtTIM4BCfg.enStpOut = AdtCHxPortOutLow; Adt_CHxXPortCfg(M0P_ADTIM4, AdtCHxB, &stcAdtTIM4BCfg); //端口CHB配置 } void App_AdvTimerInit2(uint16_t u16Period, uint16_t u16CHA_PWMDuty, uint16_t u16CHB_PWMDuty) { en_adt_compare_t enAdtCompareA; en_adt_compare_t enAdtCompareB; stc_adt_basecnt_cfg_t stcAdtBaseCntCfg; stc_adt_CHxX_port_cfg_t stcAdtTIM4ACfg; stc_adt_CHxX_port_cfg_t stcAdtTIM4BCfg; DDL_ZERO_STRUCT(stcAdtBaseCntCfg); DDL_ZERO_STRUCT(stcAdtTIM4ACfg); DDL_ZERO_STRUCT(stcAdtTIM4BCfg); Sysctrl_SetPeripheralGate(SysctrlPeripheralAdvTim, TRUE); //ADT外设时钟使能 stcAdtBaseCntCfg.enCntMode = AdtSawtoothMode; //锯齿波模式 stcAdtBaseCntCfg.enCntDir = AdtCntUp; stcAdtBaseCntCfg.enCntClkDiv = AdtClkPClk0; /* 不分频 */ Adt_Init(M0P_ADTIM6, &stcAdtBaseCntCfg); //ADT载波、计数模式、时钟配置 Adt_SetPeriod(M0P_ADTIM6, u16Period); //周期设置 enAdtCompareA = AdtCompareA; Adt_SetCompareValue(M0P_ADTIM6, enAdtCompareA, u16CHA_PWMDuty); //通用比较基准值寄存器A设置 enAdtCompareB = AdtCompareB; Adt_SetCompareValue(M0P_ADTIM6, enAdtCompareB, u16CHB_PWMDuty); //通用比较基准值寄存器B设置 stcAdtTIM4ACfg.enCap = AdtCHxCompareOutput; //比较输出 stcAdtTIM4ACfg.bOutEn = TRUE; //CHA输出使能 stcAdtTIM4ACfg.enPerc = AdtCHxPeriodLow; //计数值与周期匹配时CHA电平保持不变 stcAdtTIM4ACfg.enCmpc = AdtCHxCompareHigh; //计数值与比较值A匹配时，CHA电平翻转 stcAdtTIM4ACfg.enStaStp = AdtCHxStateSelSS; //CHA起始结束电平由STACA与STPCA控制 stcAdtTIM4ACfg.enStaOut = AdtCHxPortOutLow; //CHA起始电平为低 stcAdtTIM4ACfg.enStpOut = AdtCHxPortOutLow; //CHA结束电平为低 Adt_CHxXPortCfg(M0P_ADTIM6, AdtCHxA, &stcAdtTIM4ACfg); //端口CHA配置 stcAdtTIM4BCfg.enCap = AdtCHxCompareOutput; stcAdtTIM4BCfg.bOutEn = TRUE; stcAdtTIM4BCfg.enPerc = AdtCHxPeriodHigh; stcAdtTIM4BCfg.enCmpc = AdtCHxCompareLow; stcAdtTIM4BCfg.enStaStp = AdtCHxStateSelSS; stcAdtTIM4BCfg.enStaOut = AdtCHxPortOutHigh; stcAdtTIM4BCfg.enStpOut = AdtCHxPortOutHigh; Adt_CHxXPortCfg(M0P_ADTIM6, AdtCHxB, &stcAdtTIM4BCfg); //端口CHB配置 } /** ****************************************************************************** ** \brief Main function of project ** ** \return uint32_t return value, if needed ** ** This sample ** ******************************************************************************/ int32_t main(void) { App_AdvTimerInit(0xC000, 0x4000, 0x8000); //AdvTimer4初始化 App_AdvTimerInit2(1000-1, 0x4000, 0x8000); //AdvTimer4初始化 //配置为锯齿波模式: 周期0xC000, CHA占空比设置0x4000，CHB占空比设置0x8000 App_AdvTimerPortInit(); //AdvTimer端口初始化 Adt_StartCount(M0P_ADTIM4); //AdvTimer4运行 Adt_StartCount(M0P_ADTIM6); //AdvTimer4运行 uint16_t data = 0; Adt_SetCompareValue(M0P_ADTIM6, AdtCompareB, 500); //若不设置频率，则是 4M 并且AdtClkPClk0不分频 则是 4M / 1000 = 4K速率 250ms 占空比 50% while(1) { delay1ms(1); // Adt_SetCompareValue(M0P_ADTIM6, AdtCompareB, data++); //PWM 上面u16Period 重载为 1000-1 所以这里不能超过1000 这里的修改占空比就不做了 if (data == 1000 ) { data = 0; } } } /****************************************************************************** * EOF (not truncated) ******************************************************************************/
波形如下：
