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RSS订阅原创 按键驱动加RTC
#include <linux/kernel.h>#include <linux/module.h>#include <linux/interrupt.h>#include <linux/i2c.h>#include <linux/rtc.h>#include <linux/bcd.h>#include <l...
2018-07-16 21:19:02
427
原创 led杂设备
#include<linux/init.h>#include<linux/module.h>#include<linux/fs.h>#include <linux/cdev.h>#include <asm/uaccess.h>#include <linux/errno.h>#include <linux/fc...
2018-07-16 21:17:39
152
原创 makefile多个c文件
KERNELDIR ?= /home/linux/sing/linux-3.18.yMODULE_NAME=newobj-m += $(MODULE_NAME).o$(MODULE_NAME)-objs := led.o new2-3.odefault: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules.PHONY : cleanclean: ...
2018-07-16 21:16:54
1200
原创 makefile
## (C) Copyright 2000-2006# Wolfgang Denk, DENX Software Engineering, [email protected].## See file CREDITS for list of people who contributed to this# project.## This program is free software; you ca...
2018-07-16 21:16:08
157
原创 led.h
#ifndef __HI_LED_H__#define __HI_LED_H__#define PWMI_ADRESS_BASE 0x12130000#define HI_IO_PWMI_ADDRESS(x) (x)#define PERI_CRG55 0x120100DC /* pwm clock && reset c...
2018-07-16 21:14:10
1942
原创 hiled
#include "hi_led.h"#include <common.h>static int led_init_flag = 0;static int led_contrl = LED_CONTROL_PWM;#ifdef CONFIG_HI_LEDstatic int PWM_DRV_Disable(unsigned char pwm_num){ if (...
2018-07-16 21:13:23
207
原创 ds3231
#include <linux/kernel.h>#include <linux/module.h>#include <linux/interrupt.h>#include <linux/i2c.h>#include <linux/rtc.h>#include <linux/bcd.h>#include <l...
2018-07-16 21:12:51
1757
原创 自定义SPI的注册
这两天被spi搞得很混乱网上全是在说spi_board_info 的方式，很不喜欢这种方式。所以一直在搞动态注册struct spi_driver ds3231_driver={.driver ={.name=this_driver_name,.bus= &spi_bus_type,.owner=THIS_MODULE,},.probe =ds3231
2017-09-21 10:37:17
639
原创 platform 设备框架
平台上注册devicestruct platform_device button_dev={.name ="mybutton",.resource=button_resource,.num_resources=ARRAY_SIZE(button_resource),.dev={.platform_data=gpio_button,.release=gpio_bu
2017-09-20 14:54:58
186
原创 关于中断中屏蔽中断disable_irq_nosync
void timer_func(unsigned long arg){printk("enter timer_func.............\n");del_timer(×s);printk("del_timer....................\n");enable_irq(76);printk("enable_irq.................
2017-09-18 11:02:27
1827
3
原创 底半部机制
1、tasklet只需要定义三段代码功能函数：void my_tasklet(unsigned long data){printk("enter cdd_func!\n");}定义cdd_tasklet 变量，绑定my_tasklet函数：DECLARE_TASKLET(cdd_tasklet, my_tasklet, 0);tasklet_schedu
2017-09-15 15:07:52
303
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