hi2s3.Init.Mode = I2S_MODE_MASTER_TX; hi2s3.Init.Standard = I2S_STANDARD_PHILIPS; hi2s3.Init.DataFormat = I2S_DATAFORMAT_32B; hi2s3.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE; hi2s3.Init.AudioFreq = I2S_AUDIOFREQ_48K; hi2s3.Init.CPOL = I2S_CPOL_HIGH; hi2s3.Init.ClockSource = I2...
*/HAL_StatusTypeDefHAL_I2S_Transmit_DMA(I2S_HandleTypeDef *hi2s,uint16_t*pData,uint16_tSize){if((pData ==NULL) || (Size ==0)) {returnHAL_ERROR; }/* Process Locked */__HAL_LOCK(hi2s);if(hi2s->State == HAL_I2S_STATE_READY) { hi2s->pTxBuffPtr = pData; hi2s->State = HA...
从外设(TIMx[x=1、2、3、4]、ADC1、SPI1、SPI/I2S2、I2Cx[x=1、2]和USARTx[x=1、2、3])产生的7个DMA请求,通过逻辑或输入到DMA1控制器 其中每个通道都对应着具体的外设: ② DMA2 controller 从外设(TIMx[5、6、7、8]、ADC3、SPI/I2S3、UART4、DAC通道1、2和SDIO)产生的5个请求,经逻辑或输入...
{/* Enable the I2S DMA Tx request */SET_BIT(hi2s->Instance->CR2, SPI_CR2_TXDMAEN); }elseif(hi2s->State == HAL_I2S_STATE_BUSY_RX) {/* Enable the I2S DMA Rx request */SET_BIT(hi2s->Instance->CR2, SPI_CR2_RXDMAEN); }/* If the I2S peripheral is still not enabled, enable...
In the process of developing an I2S driver for uPy I have run into a few issues that I thought might be relevant to a broader discussion of hardware peripheral implementations. So far with I2S I've managed to muddle along by finding the ...
对于大容量的STM32芯片有2个DMA控制器两个DMA控制器,DMA1有7个通道,DMA2有5个通道。 每个通道都可以配置一些外设的地址。 ①DMA1 controller 从外设(TIMx[x=1、2、3、4]、ADC1、SPI1、SPI/I2S2、I2Cx[x=1、2]和USARTx[x=1、2、3])产生的7个DMA请求,通过逻辑或输入到DMA1控制器 其中每个通道都对...
启动DMA方式发送和接收数据的两个函数的原型分别定义如下: HAL_StatusTypeDef HAL_SPI_Transmit_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size); HAL_StatusTypeDef HAL_SPI_Receive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size); ...
< SPI/I2S Status register, Address offset: 0x14*/__IO uint32_t IFCR;/*!< SPI/I2S Interrupt/Status flags clear register, Address offset: 0x18*/uint32_t RESERVED0;/*!< Reserved, 0x1C*/__IO uint32_t TXDR;/*!< SPI/I2S Transmit data register, Address offset: 0x20*/uint32_t ...
__IO uint32_t TXDR; /*!< SPI/I2S Transmit data register, Address offset: 0x20 */ uint32_t RESERVED1[3]; /*!< Reserved, 0x24-0x2C */ __IO uint32_t RXDR; /*!< SPI/I2S Receive data register, Address offset: 0x30 */ ...
7.1.3 STM32F1 的DMA请求映像 从外设(TIMx[x=1、 2、 3、 4]、 ADC1、 SPI1、 SPI/I2S2、 I2Cx[x=1、 2]和USARTx[x=1、 2、 3])产生的7个请求,通过逻辑或输入到DMA1控制器,这意味着同时只能有一个请求有效。参见下图的DMA1请求映像。