//要关闭SPI2接收中断,允许产生DMA中断,这是SPI与DMA连接的桥梁 SPI2->CR2 =0X00; //¸SPI控制寄存器2配置 SPI2->CR2 |= 0<<6; SPI2->CR2 |= 0<<7; SPI2->CR2 |= 0<<1; SPI2->CR2 |= 1<<0; //允许DMA接收数据 } 3. DMA.H #ifndef __DMA_H #define __DMA_H #include "s...
SPI1->CR2|=1<<6;//使能接收中断 MY_NVIC_Init(1,1,35,1);//开SPI1中断 向量号35 类别：...
控制逻辑负责协调整个SPI外设,控制逻辑的工作模式根据我们配置的”控制寄存器CR1/CR2“的参数而改变,基本的控制参数包括SPI模式、波特率、LSB先行、主从模式等 在SPI外设工作时,控制逻辑会根据外设的工作状态修改”状态寄存器SR“。我们可以通过读取状态寄存器的相关位来了解SPI的工作状态。 控制逻辑还根据要求,负责产生SPI...
配置为输出，还是不输出，我们可以通过SPI_CR2寄存器的SSOE位。当SSOE为1时，并且SPI处于主模式控制时，...
整体控制逻辑负责协调整个 SPI 外设,控制逻辑的工作模式根据我们配置的“控制寄存器(CR1/CR2)”的参数而改变,基本的控制参数包括前面提到的 SPI 模式、波特率、LSB先行、主从模式、单双向模式等等。在外设工作时,控制逻辑会根据外设的工作状态修改“状态寄存器(SR)”,我们只要读取状态寄存器相关的寄存器位,就可以了解 SPI...
SPI2CR2 = 0x10; //SS管脚为普通I/O,双向模式,16bit; SPI2BR = 0x42; //设置SPI时钟频率为42 1 41 2 40 4MHz; } unsigned char SPI0_Read_Byte(void){ while (!SPI2SR_SPTEF); //等待发送器空 (void)SPI2SR; SPI2DRL = 0xff; while (!SPI2SR_SPIF)...
(12 bytes) 0x00 5200 SPI SPI_CR1 SPI control register 1 0x00 0x00 5201 SPI_CR2 SPI control register 2 0x00 0x00 5202 SPI_ICR SPI interrupt control register 0x00 0x00 5203 SPI_SR SPI status register 0x02 0x00 5204 SPI_DR SPI data register 0x00 0x00 5205 SPI_CRCPR SPI C...
– Two control registers (SCICR1 & SCICR2) The TDO pin is in low state during the start bit. – A status register (SCISR) The TDO pin is in high state during the stop bit. – A baud rate register (SCIBRR) An Idle character is interpreted as an entire frame – An extended ...
In SPI mode, when transfer is configured as finite (not endless, CR2 content /= 0), the device signals an End Of Transfer, rising EOT flag in status register after the last sampling edge of the serial clock. If the software manages the flag, performs the latest operations to be concluded...
59. Download ironjacamar-core-impl-1.1.0.cr2-sources.jar 60. Download ironjacamar-core-api-1.1.0.cr1.jar 61. Download ironjacamar-core-api-1.1.0.cr1-sources.jar 62. Download ironjacamar-core-api-1.1.0.cr2.jar 63. Download ironjacamar-core-api-1.1.0.cr2-sources.jar 64. Download ...