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以前用STM32F1的时候串口DMA接收方式解决断帧的问题需要修改一个地方 但是用HC32F460没有这两个函数不知道怎么弄了 问题解决了,改了3个地方 |
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用DMA链表 头尾相接
2个buffer进行乒乓 stc_dma_llp_descriptor_t AudioDmaLLP[2] = { { .SARx = (uint32_t)(&Sin1K32767[0]), .DARx = (uint32_t)(&I2S_CH->TXBUF), .DTCTLx_f.CNT = 960, .DTCTLx_f.BLKSIZE = 1, .LLPx = (uint32_t)(&AudioDmaLLP[1]), .CHxCTL_f.SINC = AddressIncrease, .CHxCTL_f.DINC = AddressFix, .CHxCTL_f.HSIZE = Dma16Bit, .CHxCTL_f.LLPEN = Enable, .CHxCTL_f.LLPRUN = LlpWaitNextReq, .CHxCTL_f.IE = Enable, }, { .SARx = (uint32_t)(&Sin1K32767[0]), .DARx = (uint32_t)(&I2S_CH->TXBUF), .DTCTLx_f.CNT = 960, .DTCTLx_f.BLKSIZE = 1, .LLPx = (uint32_t)(&AudioDmaLLP[0]), .CHxCTL_f.SINC = AddressIncrease, .CHxCTL_f.DINC = AddressFix, .CHxCTL_f.HSIZE = Dma16Bit, .CHxCTL_f.LLPEN = Enable, .CHxCTL_f.LLPRUN = LlpWaitNextReq, .CHxCTL_f.IE = Enable, }}; static void I2S2_DMATxCplt(void) { rt_interrupt_enter(); /* enter interrupt */ DMA_ClearIrqFlag(DMA_UNIT, DMA_CH, TrnCpltIrq); if (BufferEndCallBack && BufferEndParam) { uint32_t index; if (DMA_UNIT->LLP2 == (uint32_t)&AudioDmaLLP[0]) { index = 1; } else { index = 0; } BufferEndCallBack(BufferEndParam, index); } rt_interrupt_leave(); /* leave interrupt */ } static void FirstDMAConfig(stc_dma_llp_descriptor_t *first) { stc_dma_config_t stcDmaCfg; MEM_ZERO_STRUCT(stcDmaCfg); /* Disable DMA1. */ // DMA_Cmd(DMA_UNIT, Disable); DMA_ClearIrqFlag(DMA_UNIT, DMA_CH, BlkTrnCpltIrq); DMA_ClearIrqFlag(DMA_UNIT, DMA_CH, TrnCpltIrq); stcDmaCfg.u16BlockSize = 1u; // uint16 stcDmaCfg.u16TransferCnt = first->DTCTLx_f.CNT; stcDmaCfg.u32SrcAddr = first->SARx; stcDmaCfg.u32DesAddr = (uint32_t)(&I2S_CH->TXBUF); stcDmaCfg.stcDmaChCfg.enLlpEn = Enable; stcDmaCfg.stcDmaChCfg.enLlpMd = LlpWaitNextReq; stcDmaCfg.u32DmaLlp = first->LLPx; stcDmaCfg.stcDmaChCfg.enSrcRptEn = Disable; stcDmaCfg.stcDmaChCfg.enDesRptEn = Disable; stcDmaCfg.stcDmaChCfg.enSrcInc = AddressIncrease; stcDmaCfg.stcDmaChCfg.enDesInc = AddressFix; stcDmaCfg.stcDmaChCfg.enIntEn = Enable; stcDmaCfg.stcDmaChCfg.enTrnWidth = Dma16Bit; PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_DMA1, Enable); DMA_Cmd(DMA_UNIT, Enable); DMA_InitChannel(DMA_UNIT, DMA_CH, &stcDmaCfg); DMA_ChannelCmd(DMA_UNIT, DMA_CH, Enable); PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_AOS, Enable); DMA_SetTriggerSrc(DMA_UNIT, DMA_CH, EVT_I2S2_TXIRQOUT); stc_irq_regi_conf_t stcIrqRegiCfg; MEM_ZERO_STRUCT(stcIrqRegiCfg); stcIrqRegiCfg.enIRQn = I2S2_DMA_TXC_INT_IRQn; stcIrqRegiCfg.pfnCallback = I2S2_DMATxCplt; stcIrqRegiCfg.enIntSrc = I2S2_DMA_TXC_INT_NUM; enIrqRegistration(&stcIrqRegiCfg); NVIC_SetPriority(stcIrqRegiCfg.enIRQn, DDL_IRQ_PRIORITY_DEFAULT); NVIC_ClearPendingIRQ(stcIrqRegiCfg.enIRQn); NVIC_EnableIRQ(stcIrqRegiCfg.enIRQn); } |
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你这是裸机程序,我用的是rt-thread的dma驱动,裸机都好处理,rt-thread驱动不知道修改
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我看你的截图以为你要实现像stm32的半完成中断 和完成中断的样子
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