请教：STM8L151 HALT唤醒后ADC异常

2019-12-13 18:21发布

//ADC采集通道
#define ADC_MAX_CHAN 10 //通道总数
#define ADC_PORT_MP0 GPIOA
#define ADC_PINS_MP0 GPIO_Pin_4
#define ADC_PORT_MP1 GPIOA
#define ADC_PINS_MP1 GPIO_Pin_7
#define ADC_PORT_MA0 GPIOA
#define ADC_PINS_MA0 GPIO_Pin_5
#define ADC_PORT_MA1 GPIOA
#define ADC_PINS_MA1 GPIO_Pin_6
#define ADC_CHAN_MA0 ADC_Channel_1
#define ADC_CHAN_MA1 ADC_Channel_0
#define ADC_PORT_RP0 GPIOD
#define ADC_PINS_RP0 GPIO_Pin_2
#define ADC_PORT_RP1 GPIOB
#define ADC_PINS_RP1 GPIO_Pin_1
#define ADC_PORT_RA0 GPIOD
#define ADC_PINS_RA0 GPIO_Pin_3
#define ADC_PORT_RA1 GPIOB
#define ADC_PINS_RA1 GPIO_Pin_0
#define ADC_CHAN_RA0 ADC_Channel_19
#define ADC_CHAN_RA1 ADC_Channel_18
#define ADC_PORT_FP0 GPIOB
#define ADC_PINS_FP0 GPIO_Pin_2
#define ADC_PORT_FP1 GPIOB
#define ADC_PINS_FP1 GPIO_Pin_5
#define ADC_PORT_FA0 GPIOB
#define ADC_PINS_FA0 GPIO_Pin_3
#define ADC_PORT_FA1 GPIOB
#define ADC_PINS_FA1 GPIO_Pin_4
#define ADC_CHAN_FA0 ADC_Channel_15
#define ADC_CHAN_FA1 ADC_Channel_14
#define ADC_PORT_LP0 GPIOB
#define ADC_PINS_LP0 GPIO_Pin_6
#define ADC_PORT_LP1 GPIOF
#define ADC_PINS_LP1 GPIO_Pin_1
#define ADC_PORT_LA0 GPIOB
#define ADC_PINS_LA0 GPIO_Pin_7
#define ADC_PORT_LA1 GPIOF
#define ADC_PINS_LA1 GPIO_Pin_0
#define ADC_CHAN_LA0 ADC_Channel_11
#define ADC_CHAN_LA1 ADC_Channel_24
#define ADC_PORT_BP0 GPIOD
#define ADC_PINS_BP0 GPIO_Pin_4
#define ADC_PORT_BP1 GPIOD
#define ADC_PINS_BP1 GPIO_Pin_7
#define ADC_PORT_BA0 GPIOD
#define ADC_PINS_BA0 GPIO_Pin_5
#define ADC_PORT_BA1 GPIOD
#define ADC_PINS_BA1 GPIO_Pin_6
#define ADC_CHAN_BA0 ADC_Channel_9
#define ADC_CHAN_BA1 ADC_Channel_8
//按顺序排列，方便模块化
GPIO_TypeDef* ADCPORTSel[ADC_MAX_CHAN] = {ADC_PORT_MP0,ADC_PORT_MP1,ADC_PORT_RP0,ADC_PORT_RP1,ADC_PORT_FP0,ADC_PORT_FP1,ADC_PORT_LP0,ADC_PORT_LP1,ADC_PORT_BP0,ADC_PORT_BP1,};
GPIO_Pin_TypeDef ADCPINSSel[ADC_MAX_CHAN] = {ADC_PINS_MP0,ADC_PINS_MP1,ADC_PINS_RP0,ADC_PINS_RP1,ADC_PINS_FP0,ADC_PINS_FP1,ADC_PINS_LP0,ADC_PINS_LP1,ADC_PINS_BP0,ADC_PINS_BP1,};
ADC_Channel_TypeDef ADCCHANSel[ADC_MAX_CHAN] = {ADC_CHAN_MA0,ADC_CHAN_MA1,ADC_CHAN_RA0,ADC_CHAN_RA1,ADC_CHAN_FA0,ADC_CHAN_FA1,ADC_CHAN_LA0,ADC_CHAN_LA1,ADC_CHAN_BA0,ADC_CHAN_BA1,};
GPIO_TypeDef* ADCPORTCH[ADC_MAX_CHAN] = {ADC_PORT_MA0,ADC_PORT_MA1,ADC_PORT_RA0,ADC_PORT_RA1,ADC_PORT_FA0,ADC_PORT_FA1,ADC_PORT_LA0,ADC_PORT_LA1,ADC_PORT_BA0,ADC_PORT_BA1,};
GPIO_Pin_TypeDef ADCPINSCH[ADC_MAX_CHAN] = {ADC_PINS_MA0,ADC_PINS_MA1,ADC_PINS_RA0,ADC_PINS_RA1,ADC_PINS_FA0,ADC_PINS_FA1,ADC_PINS_LA0,ADC_PINS_LA1,ADC_PINS_BA0,ADC_PINS_BA1,};
//读到的当前数据
uint16_t recCurVal[ADC_MAX_CHAN];
void GetADCValue(unsigned char ch)
{
uint16_t temp=0;
if(ch<ADC_MAX_CHAN) //防止越界跑飞
{
GPIO_Init(ADCPORTCH[ch], ADCPINSCH[ch], GPIO_Mode_In_FL_No_IT); //设置ADC脚为输入
ADC1_Init();
GPIO_SetBits(ADCPORTSel[ch], ADCPINSSel[ch]); //打开电源
ADC_ChannelCmd (ADC1,ADCCHANSel[ch],ENABLE); //使能
Delay(50); //延时，电容充电要时间,约5ms
ADC_SoftwareStartConv (ADC1); //开启软件转换
while(!ADC_GetFlagStatus (ADC1,ADC_FLAG_EOC)); //等待转换结束
ADC_ClearFlag (ADC1,ADC_FLAG_EOC); //清除相关标识
temp = ADC_GetConversionValue(ADC1); //获取转换值
GPIO_ResetBits(ADCPORTSel[ch], ADCPINSSel[ch]); //关闭电源
ADC1_Closed();
GPIO_Init(ADCPORTCH[ch] , ADCPINSCH[ch] , GPIO_Mode_Out_PP_Low_Slow); //设置ADC脚为输出低
recCurVal[ch] = temp; //保存数据
#ifdef DEBUG
temp = temp*3000UL/4095UL; //转换成电压值
USART1_SendInt(ch,temp);
#endif
}
}
void main(void)
{
static unsigned char aaa=0;
PWR_FastWakeUpCmd(ENABLE); //快速唤醒使能
RTC_Config();
PowerOn_Init();
aaa = 0;
while (1)
{
GetADCValue(aaa);
if(++aaa>=9) aaa = 0;
GPIO_ResetBits(LED_PORT,LED_PINS);
halt();
GPIO_SetBits(LED_PORT,LED_PINS);
}
}

复制代码

程序如上，问题在于：
1：如果人为的用 GetADCValue(0); 或者GetADCValue(1); 或者GetADCValue(3); 等，串口打印ADC读到的数据完全没有问题
2：如果像上面那样用一个变量控制，则第一个 GetADCValue(0); 和 GetADCValue(7);数据是正确的，其他数据为0或者很小（小于5）
求解