实现功能：
例如采集5通道ADC数据，BUF配置20，则实现channel0数据放在BUF[0]，channel1=BUF[1]...channel0=BUF[5]...
可以实现快速采集数据。
注意：不需要使用中断。
代码：
volatile uint8_t i = 0;
volatile uint8_t PRINT_flag = 0;
#define ADC_PBUFFER_LENGTH 20//(96*15)
__attribute__ ((aligned(4))) uint16_t adc_buffer[ADC_PBUFFER_LENGTH] ;/* 注意当使用ADC扫描功能时，例程默认打印脚由PA14更改为PB7*/
#define ADC_SCAN_MODE_EXAM 1
#define ADC_SCAN_CH_NUM 5//14#define ADC_SCAN1_CH_IDX_1 (0)
#define ADC_SCAN1_CH_IDX_2 (4)
#define ADC_SCAN1_CH_IDX_3 (8)
#define ADC_SCAN1_CH_IDX_4 (12)
#define ADC_SCAN1_CH_IDX_5 (16)
#define ADC_SCAN1_CH_IDX_6 (20)
#define ADC_SCAN1_CH_IDX_7 (24)
#define ADC_SCAN1_CH_IDX_8 (28)
#define ADC_SCAN2_CH_IDX_9 (0)
#define ADC_SCAN2_CH_IDX_10 (4)
#define ADC_SCAN2_CH_IDX_11 (8)
#define ADC_SCAN2_CH_IDX_12 (12)
#define ADC_SCAN2_CH_IDX_13 (16)const uint32_t ADC_PIN[14] = {0x00000010, // PA4,AIN00x00000020, // PA5,AIN10x00001000, // PA12,AIN20x00002000, // PA13,AIN30x00004000, // PA14,AIN40x00008000, // PA15,AIN50x00000008, // PA3,AIN60x00000004, // PA2,AIN70x00000002, // PA1,AIN80x00000001, // PA0,AIN90x00000040, // PA6,AIN100x00000080, // PA7,AIN110x00000100, // PA8,AIN120x00000200 // PA9,AIN13
};const uint8_t adc_ch_seq[14] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};#define printLen 80
volatile uint16_t adcBuff[printLen];volatile uint8_t adclen;
volatile uint8_t DMA_end = 0;__HIGH_CODE
void adc_scan_test()
{ uint32_t temp = 0;GPIOA_ModeCfg( ADC_PIN[adc_ch_seq[0]] |ADC_PIN[adc_ch_seq[1]] |ADC_PIN[adc_ch_seq[2]] |ADC_PIN[adc_ch_seq[3]] |ADC_PIN[adc_ch_seq[4]] |ADC_PIN[adc_ch_seq[5]] |ADC_PIN[adc_ch_seq[6]] |ADC_PIN[adc_ch_seq[7]] |ADC_PIN[adc_ch_seq[8]] |ADC_PIN[adc_ch_seq[9]] |ADC_PIN[adc_ch_seq[10]] |ADC_PIN[adc_ch_seq[11]] |ADC_PIN[adc_ch_seq[12]] |ADC_PIN[adc_ch_seq[13]],GPIO_ModeIN_Floating);ADC_ExtSingleChSampInit(SampleFreq_4_or_2, ADC_PGA_0); //4M采样频率，0dB增益R8_ADC_CONVERT |= RB_ADC_SAMPLE_TIME; //7个采样周期ADC_ChannelCfg(adc_ch_seq[0]);temp = (adc_ch_seq[1] << ADC_SCAN1_CH_IDX_1) |(adc_ch_seq[2] << ADC_SCAN1_CH_IDX_2) |(adc_ch_seq[3] << ADC_SCAN1_CH_IDX_3) |(adc_ch_seq[4] << ADC_SCAN1_CH_IDX_4) |(adc_ch_seq[5] << ADC_SCAN1_CH_IDX_5) |(adc_ch_seq[6] << ADC_SCAN1_CH_IDX_6) |(adc_ch_seq[7] << ADC_SCAN1_CH_IDX_7) |(adc_ch_seq[8] << ADC_SCAN1_CH_IDX_8);R32_ADC_SCAN_CFG1 = temp;temp = 0;temp = (adc_ch_seq[9] << ADC_SCAN2_CH_IDX_9) |(adc_ch_seq[10] << ADC_SCAN2_CH_IDX_10) |(adc_ch_seq[11] << ADC_SCAN2_CH_IDX_11) |(adc_ch_seq[12] << ADC_SCAN2_CH_IDX_12) |(adc_ch_seq[13] << ADC_SCAN2_CH_IDX_13);ADC_AutoConverCycle(192);// temp |= RB_ADC_SCAN_SEL | ((ADC_SCAN_CH_NUM - 1) << 24);temp |= RB_ADC_SCAN_SEL | RB_ADC_IE_SCAN_END | ((ADC_SCAN_CH_NUM - 1) << 24);R32_ADC_SCAN_CFG2 = temp;ADC_DMACfg(ENABLE, (uint32_t)&adcBuff[0] , (uint32_t)&adcBuff[printLen] , ADC_Mode_LOOP);// PFIC_EnableIRQ(ADC_IRQn);ADC_StartAutoDMA();
}__HIGH_CODE
__attribute__((noinline))
void Main_Circulation()
{ while(1){TMOS_SystemProcess();if(PRINT_flag == 1){PRINT_flag = 0;for (i = 0; i < 10; i++){PRINT("%02d:%04d ",i, adcBuff[i]);adcBuff[i] = 0;}PRINT("\n");PRINT("\n");}}
}VOID TMR_TEST(){TMR0_TimerInit(FREQ_SYS / 10); // 设置定时时间 100msTMR0_ITCfg(ENABLE, TMR0_3_IT_CYC_END); // 开启中断PFIC_EnableIRQ(TMR0_IRQn);
}int main(void)
{
#if(defined(DCDC_ENABLE)) && (DCDC_ENABLE == TRUE)PWR_DCDCCfg(ENABLE);
#endifHSECFG_Capacitance(HSECap_18p);SetSysClock(SYSCLK_FREQ);
#if(defined(HAL_SLEEP)) && (HAL_SLEEP == TRUE)GPIOA_ModeCfg(GPIO_Pin_All, GPIO_ModeIN_PU);GPIOB_ModeCfg(GPIO_Pin_All, GPIO_ModeIN_PU);
#endif
#ifdef DEBUGGPIOB_SetBits(GPIO_Pin_7);GPIOB_ModeCfg(GPIO_Pin_4, GPIO_ModeIN_PU);GPIOB_ModeCfg(GPIO_Pin_7, GPIO_ModeOut_PP_5mA);UART0_DefInit();UART0_BaudRateCfg(2000000);
#endifGPIOB_SetBits(GPIO_Pin_0|GPIO_Pin_1);GPIOB_ModeCfg(GPIO_Pin_0|GPIO_Pin_1, GPIO_ModeOut_PP_5mA);PRINT("%s\n", VER_LIB);CH58x_BLEInit();HAL_Init();GAPRole_PeripheralInit();Peripheral_Init();TMR_TEST();R32_PIN_IN_DIS |= RB_PAx_IN_DIS; // 关闭数字输入adc_scan_test();mDelaymS(100);Main_Circulation();
}
__INTERRUPT
__HIGH_CODE
void TMR0_IRQHandler(void) // TMR0 定时中断
{if(TMR0_GetITFlag(TMR0_3_IT_CYC_END)){TMR0_ClearITFlag(TMR0_3_IT_CYC_END); // 清除中断标志PRINT_flag = 1;}
}