STM32F103高级定时器TIM1产生六路PWM控制无刷舵机BLDC
首次发帖、不周之处请指正！先描述下问题，最近在做120度霍尔BLDC的控制，用STM32F103 TIM1产生六路PWM时出现问题。
想要实现的控制状态是可以控制六个通道中任何一个通道的PWM输出与关断，不用互补、不需要死区
选用引脚：
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398247&size=300x300&key=387f180e7fd2872e&nocache=yes&type=fixnone
TIM1配置如下图
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398244&size=300x300&key=3bd424312d048628&nocache=yes&type=fixnone
主函数：
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398245&size=300x300&key=2fda6a2819b6a88c&nocache=yes&type=fixnone
软件仿真:
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398248&size=300x300&key=cb7a665a4611ea08&nocache=yes&type=fixnone
我想要6路PWM的，但是只产生四路 PB0与PB1只在刚开始有输出
而且，当我把CH1设置为Disable时，CH1N仍然是Enable
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398251&size=300x300&key=8676a6cb9e74abac&nocache=yes&type=fixnone
仿真结果如下，CH1与CH1N不输出、其他四路输出正常
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398252&size=300x300&key=847fcce701b10081&nocache=yes&type=fixnone
由此产生了几个问题
1、CH1的设置 会对PB0（CH2N）PB1（CH3N）产生影响？ CH1 Enable，CH2N、CH3N不输出，CH1 Disable CH2N、CH3N输出
2、CH1由Enable变为Disable对CH1N的输出产生了影响，CH1 的失能与使能时CH1与CH1N的总开关？我之后使能CH1、失能CH1N，除CH1N以外的其余五路输出
怀疑是库函数的原因、尝试用寄存器写手册与配置仿真结果如下图
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398255&size=300x300&key=6dcdca50e106ec75&nocache=yes&type=fixnone
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398257&size=300x300&key=c931c4102b5c993a&nocache=yes&type=fixnone
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398258&size=300x300&key=55a625a8d2d491ed&nocache=yes&type=fixnone
想要的输出状态是上图红线标注的 CH通道关闭CHN通道输出，百度过这种输出状态，有人说可以实现但是没讲方法
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398253&size=300x300&key=7989e7478ae4b703&nocache=yes&type=fixnone
https://www.stmcu.org.cn/module/forum/forum.php?mod=image&aid=398256&size=300x300&key=197e19d76a2d29d5&nocache=yes&type=fixnone
这样配置六路均有输出、但是PB0、PB1不正常而且也不是我想要的输出状态，可能是配置问题，很少用寄存器，不清楚这么对不对，请指正
前边都是截图，补一下TIM1配置部分、main部分代码
int main(void)
{
delay_init(); void PWM_OUT_Init()
{
//PA8910 对应CBA相PA7PB0 PB1 对应C-B-A-相复用推挽输出
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
// TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOA , ENABLE); ///RCC_APB2Periph_AFIO
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1, ENABLE);//需要部分重映像
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
TIM_DeInit(TIM1);
/* Time Base configuration */
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 4500;/// PWM 16K
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/* Channel 1, 2,3 and 4 Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;///TIM_OCMode_PWM2TIM_OCMode_Timing
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_Pulse = 2000;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;///TIM_OCNPolarity_High
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset; ///TIM_OCNIdleState_Set
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
/* TIM1 counter enable */
TIM_Cmd(TIM1, ENABLE);
/* Main Output Enable */
TIM_CtrlPWMOutputs(TIM1, ENABLE);
}
int main(void)
{
delay_init(); //延时函数初始化
NVIC_Configuration(); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
GPIO_init();
USART_init();
// Hall_Init();
PWM_OUT_Init();
GPIO_SetBits(GPIOA,GPIO_Pin_1);//TX_OE
TIM_SelectOCxM(TIM1, TIM_Channel_1, TIM_OCMode_PWM1);
TIM_CCxCmd(TIM1, TIM_Channel_1, TIM_CCx_Enable);
TIM_CCxNCmd(TIM1, TIM_Channel_1, TIM_CCxN_Disable);
/*Channel2 configuration */
TIM_SelectOCxM(TIM1, TIM_Channel_2, TIM_OCMode_PWM1 );
TIM_CCxCmd(TIM1, TIM_Channel_2, TIM_CCx_Enable);
TIM_CCxNCmd(TIM1, TIM_Channel_2, TIM_CCxN_Enable);
/*Channel3 configuration */
TIM_SelectOCxM(TIM1, TIM_Channel_3, TIM_OCMode_PWM1);
TIM_CCxCmd(TIM1, TIM_Channel_3, TIM_CCx_Enable);
TIM_CCxNCmd(TIM1, TIM_Channel_3, TIM_CCxN_Enable);
//N 通道受主通道影响主DISABLE 则N通道也关闭
// TIM1->BDTR &=0xfc00;//解锁
// TIM1->BDTR |= 0x8800;
// TIM1->CR2 |=0x1f80;
// TIM1->CCER = 0x00;
// TIM1->CCER |= 0x555;
}
代码部分没贴上去，补一下 帮顶一个 帮顶啊。 dsjsjf 发表于 2017-8-1 20:45
帮顶一个
谢谢
图片也太小了吧，根本看不清 楼主解决了吗，坐等结果呀
关于如何输出六路互补带死区PWM波形，请关注“单片机STM32”公众号，里面有一篇文章“STM32定时器TIM1输出六路带死区互补PWM波形（一）”描述。 http://mp.weixin.qq.com/s?__biz=MzU3NTI2OTQ5NQ==&mid=100000051&idx=1&sn=265f1fe9fa26e58b85774851e14991f6&chksm=7d24fe2b4a53773d9b098a314f0152095cea5d79c0e7b39106df6b670a7598fb63d42780ba75#rd zero99 发表于 2017-9-29 15:59
图片也太小了吧，根本看不清
感兴趣可以下载源文件看哈
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