edge (SPIx_CR1 CPHA = 0, CPOL setting is ignored). When activated, an NSS pulse is generated between two consecutive data frame transfers when NSS stays at high level for the duration of one clock period at least. This mode allows the slave to latch data. NSSP pulse mode is designed fo...
NSSPMode 用于设置是否使能NSSP信号,可以通过SPIx_CR2寄存器的SSOM位使能。注意,只有配置为摩托罗拉SPI主控模式时设置此成员才有用。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #define SPI_NSS_PULSE_DISABLE (0x00000000UL) #define SPI_NSS_PULSE_ENABLE SPI_CFG2_SSOM NSSPolarity 用于设置NSS引脚上...
FifoThreshold=SPI_FIFO_THRESHOLD_01DATA;/* 设置FIFO大小是一个数据项 */hspi.Init.NSSPMode=SPI_NSS_PULSE_DISABLE;/* 禁止脉冲输出 */hspi.Init.MasterKeepIOState=SPI_MASTER_KEEP_IO_STATE_ENABLE;/* 禁止SPI后,SPI相关引脚保持当前状态 */hspi.Init.Mode=SPI_MODE_MASTER;/* SPI工作在主控模式 */...
SPI3_InitStruct.Init.NSSPMode=SPI_NSS_PULSE_DISABLE; if (HAL_SPI_Init(&SPI3_InitStruct) != HAL_OK) { while(1); } __HAL_SPI_ENABLE(&SPI3_InitStruct); } (4)LoRa 寄存器访问 如下向寄存器中写和读操作的函数代码,下面代码是从寄存器中读取数据的函数代码,从中可以看出,在操作之前,都将使能...
hspi1.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;if (HAL_SPI_Init(&hspi1) != HAL_OK){ Error_...
SPI3_Handler.Init.NSSPMode = SPI_NSS_PULSE_DISABLE; HAL_SPI_Init(&SPI3_Handler); __HAL_SPI_ENABLE(&SPI3_Handler); } //SPI2 读写一个字节 //TxData:要写入的字节 //返回值:读取到的字节 uint8_t SPI3_ReadWriteByte(uint8_t TxData) ...
hspi2.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;hspi2.Init.NSSPolarity = SPI_NSS_POLARITY_LOW; ...
hspi2.Init.NSSPMode = SPI_NSS_PULSE_ENABLED;Init后注册：CR1=0x11c CR2=0x170c 启用 NSSP 的 ...
hspi2.Init.NSSPMode = SPI_NSS_PULSE_ENABLE; SPI 通信 API: void AHB_WRITE_32 (uint16_t 地址、uint32_t 数据) { AHB_WRITE_BURST_START (地址、1); AHB_WRITE_BURST_WRITE (DATA); AHB_WRITE_BURST_END (); } void AHB_WRITE_BURST_START (uint16_t 地址、uint8_t 字) ...
//指定是否启用NSSP信号 hspi2.Init.NSSPMode = SPI_NSS_PULSE_DISABLE; //指定NSS信号 哪个电平为活动电平 hspi2.Init.NSSPolarity = SPI_NSS_POLARITY_LOW; //FIFO阈值级别 hspi2.Init.FifoThreshold = SPI_FIFO_THRESHOLD_01DATA; //指定一个额外的延迟 以SPI时钟周期的数量表示 在主动边缘和第一个数据...