我使用pwm_request等函数编写了一蜂鸣器驱动,我手动加载编译好的beep.ko,使用测试程序可以正常驱动蜂鸣器,为什么我把该beep.c文件编译进内核,内核启动过程中在pwm_request申请pwm出现错误?申请不成功。
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
你使用的是Linux吗?对照这个guide看一下,相关的配置选项勾了吗?是不是有什么疏漏:http://processors.wiki.ti.com/index.php/AM335x_PWM_Driver%27s_Guide