又没有人用过spi 的wifi模块?或者做过在bf上以spi方式挂载sd卡的啊?
现在想用spi接wifi模块,模块还没到,所以想用sd卡实验下spi接口。但是把SPI MMC Driver 移植上去之后,检测sd卡插入的中断要么不产生,要么总是产生(像下面一样,cat /proc/interrupts时看到中断数量一直增加,不管我的irq管脚是高电平还是低电平),在dev目录下也没有相应的设备文件:”/dev/spi_mmc1” ”/dev/mmcblk0p1”
root:/> mmc_spi spi0.9: can't change chip-select polarity
mmc_spi spi0.9: can't change chip-select polarity
mmc_spi spi0.9: can't change chip-select polarity
mmc_spi spi0.9: can't change chip-select polarity
mmc_spi spi0.9: can't change chip-select polarity
所以 是不是我哪里设置错误了呢?中断该怎么配置呢?
「该帖子被 open_gg 在 2011-11-03 14:57:29 编辑过」