https://support.dialog-semiconductor.com/resource-keywords/da14695-spi 在 https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-software/decrease-spi-cs-timing-da14695 < div class = "字段field-name-taxonomy-forums field-type-taxonomy-term-reference field-label-above”> < div class = "字段标签" >论坛:,< / div > < div class = "字段条目" > < div class =”field-item甚至“rel = " sioc: has_container " > < a href = " /论坛/ dialog-smartbond-bluetooth-low-energy - % E2 % 80% 93 -软件”“=“sioc:容器sioc:论坛”属性=“rdfs: label skos: prefLabel”数据类型= " " >对话框Smartbond蓝牙低能量——软件< / > < / div > < / div > < / div > < div class =”字段field-name-body field-type-text-with-summary field-label-hidden”> < div class = "字段条目" > < div class =”field-item甚至“财产= "内容:编码" > < p >你好,< / p > < p >我在新的对话框中,我使用DA14695,USB DK学习示例代码(SDK版本:10.0.8.105 WIRA 10.440.8.6)。< / p > < p >我试图使用SPI模块,记录了SPI与洛杉矶,波形,发现CS销太花时间了。< / p > < p >我的SPI速度是4 mhz时钟时间约0.25 /位,但我们花了将近90 CS从低到嗨……< / p > < p > < / p > < p >时间图:< / p > < p > CS销低- - - - - - - - - - -等待40美国- - - - - - - - - - - 9-bit数据(共3人)- - - - - - - - - - -等待40我们- - - - - - - - - - - CS销高< / p > < p > < / p > < p >是有办法缩短加快SPI CS销时间?< / p > < p >谢谢! ! !< / p > < p > < / p > < p >我的SPI编写代码如下所示:< / p > < pre > <代码类= " language-cpp " >空白spi_send_DATA (uint8_t dat){#如果1 / / SPI 9-bit模式ad_spi_activate_cs (SpiHandle);ad_spi_write_9th_bit (SpiHandle 0 x01);spi_send_8b (dat);/ / ad_spi_deactivate_cs_when_spi_done (SpiHandle);ad_spi_deactivate_cs (SpiHandle);# endif} < /代码> < / pre > < p > < / p > < / div > < / div > < / div > < div class =”字段field-name-field-forum-keywords field-type-taxonomy-term-reference field-label-above”> < div class = "字段标签" >关键词:,< / div > < div class = "字段条目" > < div class =”field-item甚至“> < a href = " / resource-keywords / da14695-spi”“=“skos:概念”属性=“rdfs: label skos: prefLabel”数据类型= " " > # DA14695 # SPI < / > < / div > < / div > < / div > < div class =”字段field-name-field-device field-type-taxonomy-term-reference field-label-above”> < div class = "字段标签" >设备:,< / div > < div class = "字段条目" > < div class =”field-item甚至“> < a href = " / forum-post-device / da1469x”“=“skos:概念”属性=“rdfs: label skos: prefLabel”数据类型= " " > da1469x < / > < / div > < / div > < / div > 2020年结婚,05年8月10:41:01 + 0000 eric_fan 372747年https://support.dialog-semiconductor.com https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-software/decrease-spi-cs-timing-da14695的评论