- ************************************************************************/
- #include "common.h"
- #include "ics.h"
- #include "rtc.h"
- #include "uart.h"
- #include "adc.h"
- #include "dma.h"
- #include "pmc.h"
- #include "sysinit.h"
- /**********************************************************************/
- uint16_t u16ADC_ConversionBuff[16];
- int main (void);
- void DMA_Group0_Task(void);
- /******************************************************************************/
- int main (void)
- {
- //uint8_t u8Ch = 0;
- ADC_ConfigType sADC_Config = {0};
- DMAMUX_ConfigType DMAMUX_Config;
- DMA_ConfigType DMA_Config={0};
-
- /*系统初始化*/
- sysinit();
- printf("\nRunning the ADC_DMA_demo project.\r\n");
- UART_WaitTxComplete(TERM_PORT);
- LED0_Init();
-
- /*DMA初始化*/
- DMA_Config.sSetting.bEnableDebug=1; /*在调试模式下，DMA会停新通道启动*/
- DMA_int(DMA,&DMA_Config);
-
- /*设置DMAMUX,选择DMA通道,DMA传输触发模式及信号请求源*/
- DMAMUX_Config.sSetting.bChannelEnable=1; /*使能DMA通道*/
- DMAMUX_Config.sSetting.bChannelTriggerEn=0; /*通过设定的DMA触发源触发DMA传输*/
- DMAMUX_Config.u8ChannelSource=ADC0_DMAREQ; /*ADC转换完成信号请求DMA通道传输*/
- DMAMUX_ChannelConfig(DMAMUX,&DMAMUX_Config,DMA_CHANNEL0);
-
- /*配置DMA通道TCD*/
- DMA_Config.sSetting.bEnRequest=1; /*使能通道硬件请求信号*/
- DMA_Config.sSetting.bEnErrIn=1; /*使能DMA通道错误中断*/
-
- DMA_Config.u32Saddr=(uint32_t)(&ADC0->R); /*源地址*/
- DMA_Config.u8Ssize=DMA_DATA_TRANSFER_SIZE2; /*每次r/w序列从源地址中读取2个字节*/
- DMA_Config.s16Soff=0; /*每次从源地址读取一次数据后，源地址加0*/
- DMA_Config.u8Smod=DMA_ModuloDisable; /*禁用源地址模数功能*/
- DMA_Config.s32Slast=0; /*主循环结束后源地址偏移量*/
-
- DMA_Config.u32Daddr=(uint32_t)u16ADC_ConversionBuff; /*目标地址*/
- DMA_Config.u8Dsize=DMA_DATA_TRANSFER_SIZE2; /*每次向目标地址写入2个字节*/
- DMA_Config.s16Doff=2; /*每次向目标地址写入一次数据后目标地址加2*/
- DMA_Config.u8Dmod= DMA_ModuloDisable; /*目标地址禁用模数功能*/
- DMA_Config.s32Dlastga=-16; /*主循环结束目标地址-16*/
-
- DMA_Config.u32Nbytes=16; /*每次次循环传输16个字节，注：次循环传输字节数，受次循环映射影响*/
- DMA_Config.u16Biter=1; /*主循环迭代次数为1，注：主循环迭代次数，受次循环结束后通道链功能影响*/
- DMA_Config.u8Bwc=0; /*DMA引擎不停转*/
- DMA_Config.sSetting.bDisableRequest=0; /*主循环结束后不禁用通道硬件请求信号*/
-
- DMATCD_ChannelConfig(DMA,&DMA_Config,DMA_CHANNEL0);
- DMA_INTConfig(DMA,DMA_INT_Major,DMA_EnInt,DMA_CHANNEL0); /*中断设置*/
- DMA_SetCallback(DMA,DMA_IntGroup1,DMA_Group0_Task); /*注册回调函数*/
-
-
- /*初始化ADC模块*/
- sADC_Config.u8ClockDiv = ADC_ADIV_DIVIDE_8; /*!< ADC时钟源分频系数为8*/
- sADC_Config.u8ClockSource = CLOCK_SOURCE_ADACK; /*!< ADC时钟源选择异步时钟*/
- sADC_Config.u8Mode = ADC_MODE_12BIT; /*!< 12位转换*/
- sADC_Config.sSetting.bDmaEn = 1; /*!< ADC转换完成触发DMA搬运数据*/
- sADC_Config.sSetting.bIntEn = 1; /*!< 使能中断*/
- sADC_Config.u8FiFoLevel = ADC_FIFO_LEVEL8; /*!< 8级FIFO */
- ADC_Init( ADC0, &sADC_Config); /*!< 初始化ADC*/
-
- while(1)
- {
- /*选择通道开始转换*/
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD14_TEMPSENSOR);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD29_VREFH);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD30_VREFL);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD14_TEMPSENSOR);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD29_VREFH);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD30_VREFL);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD29_VREFH);
- ADC_SetChannel(ADC0,ADC_CHANNEL_AD30_VREFL);
- printf("input any character to start a new conversion!\r\n");
- UART_GetChar(TERM_PORT);
- }
- }
| 
楼主
