[问答]

Mcbsp两次发送数据间隔时间较长

1681

问答对人有帮助，内容完整，我也想知道答案 0 大家好！目前在调试Mcbsp接口，使用中发现连续调用例程中的函数mcbspSubmitChan发送数据，两次间隔时间较长，达到100ms左右。请问是否有方法改进其间隔时间，使其达到3ms内？具体配置如下： #define NUM_BUFS 1 /* Max of 2 outstanding requests / #define BUFSIZE 2048 / 1K of data transceive / #define NUM_OF_CHANNELS 1//8 / Number of slots to be used / Mcbsp_srgConfig mcbspSrgCfg = [ FALSE, / No gsync to be used as input is not CLKS / Mcbsp_ClkSPol_RISING_EDGE, / Dont care as input clock is not clks / Mcbsp_SrgClk_CLKCPU, / McBSP internal clock to be used / 166666667, / Mcbsp internal clock frequency(PLL-SYSCLK6) / 0 / frame sync pulse width (val+1) is used / ]; // ///* // * brief Mcbsp device creation default parameters. // * // / const Mcbsp_Params Mcbsp_PARAMS = [ Mcbsp_DevMode_McBSP, / Use the device as MCBSP / Mcbsp_OpMode_DMAINTERRUPT, / Use DMA mode of operation / TRUE, / cache coherency taken care of by driver / Mcbsp_EmuMode_SOFT_STOP, / Soft mode is to be enabled / Mcbsp_Loopback_DISABLE, / Loop back mode disabled / &mcbspSrgCfg, / sample rate generator configuration / NULL, / TX pending buffer queue from application / NULL, / TX floating buffer queue in DMA / NULL, / RX pending buffer queue from application / NULL / RX floating buffer queue in DMA / ]; // #pragma DATA_ALIGN(loopJob, MCBSP_MAX_CACHE_ALIGN) static Int32 loopJob[16] = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]; // ///< settings to configure the TX or RX hardware sections / Mcbsp_DataConfig mcbspChanConfig = [ Mcbsp_Phase_SINGLE, Mcbsp_WordLength_32, Mcbsp_WordLength_32, /* Dont care for single phase/ NUM_OF_CHANNELS, NUM_OF_CHANNELS, // Only using single phase, hence num channels is 0 Mcbsp_FrmSync_DETECT, Mcbsp_DataDelay_0_BIT,//Mcbsp_DataDelay_1_BIT, Mcbsp_Compand_OFF_MSB_FIRST, Mcbsp_BitReversal_DISABLE, Mcbsp_IntMode_ON_SYNCERR, Mcbsp_RxJust_RZF, / Dont care for TX / Mcbsp_DxEna_OFF ]; // /< clock setup for the TX section / Mcbsp_ClkSetup mcbspClkConfigTx = [ Mcbsp_FsClkMode_INTERNAL, 1000000, /* 96KHz / Mcbsp_TxRxClkMode_INTERNAL, Mcbsp_FsPol_ACTIVE_HIGH, Mcbsp_ClkPol_FALLING_EDGE ]; /< clock setup for the RX section / Mcbsp_ClkSetup mcbspClkConfigRx = [ Mcbsp_FsClkMode_EXTERNAL, 1000000, /* 96KHz / Mcbsp_TxRxClkMode_EXTERNAL, Mcbsp_FsPol_ACTIVE_HIGH, Mcbsp_ClkPol_RISING_EDGE ]; /< Multi channel setup / Mcbsp_McrSetup mcbspMultiChanCtrl = [ Mcbsp_McmMode_ALL_CHAN_ENABLED_UNMASKED, Mcbsp_PartitionMode_CHAN_0_15, Mcbsp_PartitionMode_CHAN_16_31, Mcbsp_PartitionMode_2 ]; Mcbsp_ChanParams mcbspChanparamTx = [ Mcbsp_WordLength_32, /* wordlength configured / &loopJob[0], / loop job buffer internal / 8, / user loopjob length / NULL, / global error callback / NULL, / edma Handle / 1, / EDMA event queue / 8, / hwi number / Mcbsp_BufferFormat_1SLOT,//Mcbsp_BufferFormat_MULTISLOT_NON_INTERLEAVED, TRUE, / FIFO mode enabled / &mcbspChanConfig, / channel configuration / &mcbspClkConfigTx, / clock configuration / &mcbspMultiChanCtrl, / multi channel control / 0x00, 0x00, 0x00, 0x00 ]; Mcbsp_ChanParams mcbspChanparamRx = [ Mcbsp_WordLength_32, / wordlength configured / &loopJob[0], / loop job buffer internal / 8, / user loopjob length / NULL, / global error callback / NULL, / edma Handle / 2, / EDMA event queue / 8, / hwi number / Mcbsp_BufferFormat_1SLOT,//Mcbsp_BufferFormat_MULTISLOT_NON_INTERLEAVED, TRUE, / FIFO mode enabled / &mcbspChanConfig, / channel configuration / &mcbspClkConfigRx, / clock configuration / &mcbspMultiChanCtrl, / multi channel control */ 0x00, 0x00, 0x00, 0x00 ]; 具体工程见附件。谢谢 0
2018-6-21 06:51:11　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × 新星之火12138 该类别下有 58 个回答。邀请回答 heks 该类别下有 57 个回答。邀请回答普罗旺斯的薰衣草该类别下有 55 个回答。邀请回答 lksas 该类别下有 46 个回答。邀请回答 wang21cj 该类别下有 45 个回答。邀请回答 chm5 该类别下有 45 个回答。邀请回答 hgimtk 该类别下有 44 个回答。邀请回答 fdhsfagd 该类别下有 42 个回答。邀请回答 huzp_bbs 该类别下有 41 个回答。邀请回答 ggfx 该类别下有 41 个回答。邀请回答站着幻想该类别下有 40 个回答。邀请回答颜刚YanG 该类别下有 40 个回答。邀请回答 zhhx1985 该类别下有 40 个回答。邀请回答 kghfh 该类别下有 39 个回答。邀请回答 zhouxk 该类别下有 39 个回答。邀请回答 K_Ming 该类别下有 39 个回答。邀请回答潘涛12345 该类别下有 39 个回答。邀请回答深海零下一度1 该类别下有 38 个回答。邀请回答风动影随该类别下有 38 个回答。邀请回答 HengDu 该类别下有 38 个回答。邀请回答举报杨福林相关推荐 • 请问SIM900连续发送gprs数据怎么缩短数据间隔？ 863 • 请问蓝牙发送2包数据之间的时间间隔范围是？ 3343 • 如何在战舰V3网络通信试验中改发送数据的间隔时间？ 954 • 平均故障间隔时间的用处 2236 • 使用M24M02时发现连续两次写入数据需要间隔一定的时间，否则会导致无法写入的情况，怎么解决？ 349 • 求助，CH573做从机主动发送char4notify间隔最小时间是多少？ 296 • 怎么在PXIE5122上用外部触发信号控制采集开始和采集时间的长短呢？ 3896 • 如何延长CC2541广播间隔时间 3367 • 如何检测can发出的同一报文的间隔时间 6737 • stm32F765的FMC使用SRAM能否缩小两次连续读的时间 2922 1个回答