请问有谁用过STM32F373 SDADC3功能的？有些疑问
/*** @brief Configure TIM19 channel 2 to trigger the SDADC conversion
* @param None
* @retval None
*/
static void TIM_Config(void)
{
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
/* Enable TIM19 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM19, ENABLE);
/* TIM19 Configuration */
TIM_DeInit(TIM19);
/* Fills each TIM_TimeBaseInitStruct member with its default value */
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
/* Time base configuration: MPX2102_SDADC will be triggered each sysclk/Period
= 72MHz/10000 = 7.2 KHz */
TIM_TimeBaseStructure.TIM_Period = 10000;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM19, &TIM_TimeBaseStructure);
/* PWM1 Mode configuration: Channel2 (OC2) */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 10000/2;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM19, &TIM_OCInitStructure);
/* Enable TIM19 counter */
TIM_Cmd(TIM19, ENABLE);
}
这是下载的一个关于用TIM19的2通道作为触发源来触发 SDADC1采集的，但这个TIM19的初始化配置在哪里写出来是用TIM19的2通道呢？我看得不是很明白
因为现在我要改成SDADC3来采集，但SDADC3的触发源是TIM19的4通道，如果要上面的程序改成4通道，要怎么修改呢？谢谢。
RE:请问有谁用过STM32F373 SDADC3功能的？有些疑问
在设置这个参数之前，有一段代码GPIO_Init设置GPIO与的DAC映射，着这个和TImer和DAC关联上。现在是不是用库用的太多了，都不习惯看寄存器手册了吧
RE:请问有谁用过STM32F373 SDADC3功能的？有些疑问
楼主贴出来的程序已经全有了你要改用4通道，只需要更改这段代码便是
/* PWM1 Mode configuration: Channel2 (OC2) */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 10000/2;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM19, &TIM_OCInitStructure);
改为： TIM_OC4Init(TIM19, &TIM_OCInitStructure);
模式用PWM2也行的
回复:请问有谁用过STM32F373 SDADC3功能的？有些疑问
回复第 2 楼 于2014-01-16 14:05:15发表:楼主贴出来的程序已经全有了
你要改用4通道，只需要更改这段代码便是
/* PWM1 Mode configuration: Channel2 (OC2) */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 10000/2;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM19, &TIM_OCInitStructure);
改为： TIM_OC4Init(TIM19, &TIM_OCInitStructure);
模式用PWM2也行的
===================================
太感谢了。我太大意，我以为是在后面的参数设置的，谢谢，有反应了
RE:请问有谁用过STM32F373 SDADC3功能的？有些疑问
就是oc2改成oc4的初始化就行
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