Now, I have disabled DMA and am using native CS for the SPI peripheral, but I still observe that CS remains high for approximately 5 µs. Even when I increase the SPI clock speed, the idle time of CS remains almost unchanged, while the low time (transaction time) improves. Can ...
Now, I have disabled DMA and am using native CS for the SPI peripheral, but I still observe that CS remains high for approximately 5 µs. Even when I increase the SPI clock speed, the idle time of CS remains almost unchanged, while the low time (transaction time) impr...
Speed = GPIO_SPEED_FREQ_VERY_HIGH; HAL_GPIO_Init(SPI5_NSS_GPIO_Port, &GPIO_InitStruct); /*Configure GPIO pin : PtPin */ @@ -118,7 +111,7 @@ void MX_GPIO_Init(void) GPIO_InitStruct.Pin = SPI2_CSB_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = ...
部件名M95160WCS6TP/S 功能描述16-KbitserialSPIbusEEPROMwithhigh-speedclock Download46 Pages Scroll/Zoom 100% 制造商STMICROELECTRONICS [STMicroelectronics] 网页http://www.st.com 标志 类似零件编号 - M95160WCS6TP/S 制造商部件名数据表功能描述 ...
1970s. Nuclear power produces vast amounts of electricity more cheaply than gas or coal, with no carbon emissions. For a number of years in the 1980s and '90s, however, use of nuclear power declined due to accidents, concerns about nuclear waste storage and disposal, and...
Now, I have disabled DMA and am using native CS for the SPI peripheral, but I still observe that CS remains high for approximately 5 µs. Even when I increase the SPI clock speed, the idle time of CS remains almost unchanged, while the low time (transaction time) imp...
s32k144EVB board and s32k_sdk i got a problem when using lpspi2:when i set a higher freq like 12Mhz ,there are about 90us delay betwwen sck and pcs
硬件使用的是S32K142的开发板;软件是S32DS开发环境下生产的SPI例程;发现的问题是:片选信号cs异常;现象是:当发送的数据SOUT中从0变为1时,片选信号cs会短时间内变成高电平?下图分别是发送数据为“FD00”,“AAAA”和“0000”时的结果,应该能够说明我反映的问题了。
Good morning I have a slave SPI working correctly. I would like to emulate the SSI functionality, just getting rid of the CS activation. It should
查看spi-imx.c驱动似乎没有对cs_change进行任何处理,根据数据手册IMX6DQRM第21章的描述, 我想设置成Figure 21-8 的状态,当我设置SS_CTL[3:0] 0000 时,内核好像被hangs up了,当设置SS_CTL[3:0]为SS_CTL[3:0] 0001时,CS输出状态为Figure 21-9,kernel为3.14.52,对此不知道该如何去设置,还请不吝指教...