健忘的工程師筆記本

gzip 只認識 .gz 的檔案,  所以將 initrd.img 改成 imitrd.gz gzip -d initrd.gz   → OK

1. 先將 menuconfig 裡 LED Trigger support 打開  Device Drivers  --->  LED Support  --->  LED Trigger support  --->  LED Timer Trigger                                                                    |->  LED Heartbeat Trigger                                                                    |->  LED backlight Trigger                                                                    |->  LED GPIO Trigger                                                                    |->  LED Default ON Trigger 2. 將 gpio-key 定義好, 並註冊. struct gpio_led { const char *name; const char *default_trigger; unsigned gpio; unsigned active_low : 1; unsigned retain_state_suspended : 1; unsigned default_state : 2; /* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */ }; struct gpio_led_platform_data { int num_leds; struct gpio_led *leds; int (*gpio_blink_set)(unsigned gpio, int state, unsign

1. 先將 menuconfig 裡 GPIO Buttons 打開  Device Drivers  --->  Input device support  --->  Keyboards  --->  GPIO Buttons 2. 將 gpio-key 定義好, 並註冊. struct gpio_keys_button { /* Configuration parameters */ int code; /* input event code (KEY_*, SW_*) */ int gpio; int active_low; char *desc; int type; /* input event type (EV_KEY, EV_SW) */ int wakeup; /* configure the button as a wake-up source */ int debounce_interval; /* debounce ticks interval in msecs */ bool can_disable; }; struct gpio_keys_platform_data { struct gpio_keys_button *buttons; int nbuttons; unsigned int poll_interval; /* polling interval in msecs -   for polling driver only */ unsigned int rep:1; /* enable input subsystem auto repeat */ int (*enable)(struct device *dev); void (*disable)(struct device *dev); }; #include #include static struct gpio_keys_button bfin_gpio_keys_table[] = { { .code = KEY_POWER, /* See include/linux/

1. 利用 smartctl 讀硬碟溫度     smartctl -d ata -A /dev/sda | grep Tempera | cut -c 88-90