请教下，关于2640 spi外挂flash问题，我是用的是bsp_spi.c 和 ext_flash.c接口文件测试读取ID号为0，我初始化是extFlashOpen();
是我的SPI没初始化好么？？请有了解的帮忙看下，谢谢！
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CC2640-SPI总线外挂FLASH (w25x20cl)
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