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CC2640R2F spi引脚映射问题

yekun kun
Expert 1270 points
Other Parts Discussed in Thread: CC2640R2F

我使用的CC2640R2F模块的SPI引脚IO8,IO9没有引出，而例程使用的就是这两个引脚，我可以直接在CC2640R2_LANUCHXL.H改别的其他引脚吗，是随便的引脚都可以，还是有特定的引脚；

  • 0
    TI__Guru* 82220 points

    SPI0的话已经设置好了，SPI1可以自己定义成未使用的引脚

    /* SPI Board */
#define CC2640R2_LAUNCHXL_SPI0_MISO             IOID_8          /* RF1.20 */
#define CC2640R2_LAUNCHXL_SPI0_MOSI             IOID_9          /* RF1.18 */
#define CC2640R2_LAUNCHXL_SPI0_CLK              IOID_10         /* RF1.16 */
#define CC2640R2_LAUNCHXL_SPI0_CSN              IOID_11
#define CC2640R2_LAUNCHXL_SPI1_MISO             PIN_UNASSIGNED
#define CC2640R2_LAUNCHXL_SPI1_MOSI             PIN_UNASSIGNED
#define CC2640R2_LAUNCHXL_SPI1_CLK              PIN_UNASSIGNED
#define CC2640R2_LAUNCHXL_SPI1_CSN              PIN_UNASSIGNED

  • 0 回复 Kevin Qiu
    Expert 1270 points
    如过我使用其他引脚挂载SPI FLASH;
    下面的引脚是否可以：
    /* SPI */
    #define CC2640R2_LAUNCHXL_SPI_FLASH_CS IOID_25//IOID_20 《-----------------------------
    #define CC2640R2_LAUNCHXL_FLASH_CS_ON 0
    #define CC2640R2_LAUNCHXL_FLASH_CS_OFF 1

    /* SPI Board */
    #define CC2640R2_LAUNCHXL_SPI0_MISO IOID_26//IOID_8 /* RF1.20 */
    #define CC2640R2_LAUNCHXL_SPI0_MOSI IOID_27//IOID_9 /* RF1.18 */
    #define CC2640R2_LAUNCHXL_SPI0_CLK IOID_28//IOID_10 /* RF1.16 */
    #define CC2640R2_LAUNCHXL_SPI0_CSN PIN_UNASSIGNED //IOID_25《----------------------------------------------------

    还有我打箭头的地方，为啥也有两个SPI SC定义的地方？
    是否也要改为IOID_25??
  • 0 回复 yekun kun
    TI__Guru* 82220 points
    只要是未使用的IO都可以，选一个地方定义就行了
  • 0 回复 yekun kun
    Guru 109510 points
    只要沒用到重疊的io就可以