project

pump/sc.sh

+make clean
+make
+sudo rmmod pump_dev
+sudo insmod pump_dev.ko

soil/.soil_dev.ko.cmd

+cmd_/home/pi/Desktop/project/soil/soil_dev.ko := ld -r  -EL -T ./scripts/module-common.lds -T ./arch/arm/kernel/module.lds  --build-id  -o /home/pi/Desktop/project/soil/soil_dev.ko /home/pi/Desktop/project/soil/soil_dev.o /home/pi/Desktop/project/soil/soil_dev.mod.o ;  true

soil/.tmp_versions/soil_dev.mod

+/home/pi/Desktop/project/soil/soil_dev.ko
+/home/pi/Desktop/project/soil/soil_dev.o
+

soil/Makefile

+KERNEL_VER := $(shell uname -r)
+KERNEL_DIR = '/lib/modules/$(KERNEL_VER)/build'
+
+obj-m := soil_dev.o
+
+PWD := $(shell pwd)
+
+all:
+	make -C $(KERNEL_DIR) M=$(PWD) modules
+clean:
+	make -C $(KERNEL_DIR) M=$(PWD) clean

soil/modules.order

+kernel//home/pi/Desktop/project/soil/soil_dev.ko

soil/sc.sh

+make clean
+make
+sudo rmmod soil_dev
+sudo insmod soil_dev.ko

soil/soil_dev.c

+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+
+#include <asm/mach/map.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#define SOIL_MAJOR_NUMBER 501
+#define SOIL_MINOR_NUMBER 101
+#define DEV_NAME "soil"
+
+#define GPIO_BASE_ADDR 0x3F200000
+#define GPFSEL0 0x00
+#define GPFSEL1 0x04
+#define GPFSEL2 0x08
+#define GPCLR0 0x28
+#define SPI_BASE_ADDR 0x3F204000
+#define SPICS 0x00
+#define SPIFIFO 0x04
+#define SPICLK 0x08
+
+static void __iomem *gpio_base;
+volatile unsigned int *gpsel0;
+volatile unsigned int *gpsel1;
+volatile unsigned int *gpsel2;
+volatile unsigned int *gpclr0;
+static void __iomem *spi_base;
+volatile unsigned int *cs;
+volatile unsigned int *fifo;
+volatile unsigned int *clk;
+
+int SD_open(struct inode *inode, struct file *filp) {
+   printk(KERN_ALERT "soil_detect Sensor driver open!!\n");
+   
+   gpio_base = ioremap(GPIO_BASE_ADDR, 0x60);
+   gpsel0 = (volatile unsigned int *)(gpio_base + GPFSEL0);
+   gpsel1 = (volatile unsigned int *)(gpio_base + GPFSEL1);
+   gpsel2 = (volatile unsigned int *)(gpio_base + GPFSEL2);
+   gpclr0 = (volatile unsigned int *)(gpio_base + GPCLR0);
+   spi_base = ioremap(SPI_BASE_ADDR, 0x0C);
+   cs = (volatile unsigned int *)(spi_base + SPICS);
+   fifo = (volatile unsigned int *)(spi_base + SPIFIFO);
+   clk = (volatile unsigned int *)(spi_base + SPICLK);
+   
+   *cs = 0x00000000;
+   *cs |= (1<<4);
+   *cs |= (1<<5);
+   
+   return 0;
+}
+int SD_release(struct inode *inode, struct file *filp) {
+   printk(KERN_ALERT "soil_detect Sensor driver closed!!\n");
+   iounmap((void*)gpio_base);
+   iounmap((void*)spi_base);
+
+   return 0;
+}
+
+ssize_t SD_read(struct file* flip, char* buf, size_t size, loff_t* f_pos){
+   unsigned char buff[3];
+   *gpsel0 = (1<<26); //CE0
+   *gpsel0 |= (1<<29); //MISO
+   *gpsel1 |= (1<<2); //MOSI
+   *gpsel1 |= (1<<5); //CLK
+   
+   buff[0] = 0x01;
+   buff[1] = (0x08)<<4;
+   buff[2] = 0x00;
+   unsigned int adcValue = 0, i=0;
+   
+   *cs |= (1<<4);
+   *cs |= (1<<5);
+   *cs |= (1<<7);
+   
+   for(i=0;i<3;i++){
+      while(!(*cs & (1<<18)));
+      *fifo=buff[i];
+      
+      while(!(*cs & (1<<17)));
+      buff[i]=*fifo;
+   }
+   while(!(*cs&(1<<16)));
+   
+   adcValue = ((buff[1] & 0x03) <<8) | buff[2];
+   printk("result:%u\n", adcValue); 
+    
+   copy_to_user(buf, &adcValue, 4);
+
+   *cs |= (1<<4);
+   *cs |= (1<<5);
+   *cs &= ~(1<<7);
+   
+   return size;
+}
+
+static struct file_operations SD_fops = {
+   .owner = THIS_MODULE,
+   .read = SD_read,
+   .open = SD_open,
+   .release = SD_release,
+};
+
+int __init SD_init(void) {
+   if(register_chrdev(SOIL_MAJOR_NUMBER, DEV_NAME, &SD_fops) < 0)
+      printk(KERN_ALERT "soil_detect Sensor driver init failed\n");
+   else
+      printk(KERN_ALERT "soil_detect Sensor driver init successful\n");
+
+   return 0;
+}
+
+void __exit SD_exit(void) { 
+   unregister_chrdev(SOIL_MAJOR_NUMBER, DEV_NAME);
+   printk(KERN_ALERT "soil_detect Sensor driver cleanup\n");
+}
+
+module_init(SD_init);
+module_exit(SD_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Damin");
+MODULE_DESCRIPTION("soil_detect");

soil/soil_dev.mod.c

+#include <linux/build-salt.h>
+#include <linux/module.h>
+#include <linux/vermagic.h>
+#include <linux/compiler.h>
+
+BUILD_SALT;
+
+MODULE_INFO(vermagic, VERMAGIC_STRING);
+MODULE_INFO(name, KBUILD_MODNAME);
+
+__visible struct module __this_module
+__attribute__((section(".gnu.linkonce.this_module"))) = {
+	.name = KBUILD_MODNAME,
+	.init = init_module,
+#ifdef CONFIG_MODULE_UNLOAD
+	.exit = cleanup_module,
+#endif
+	.arch = MODULE_ARCH_INIT,
+};
+
+#ifdef CONFIG_RETPOLINE
+MODULE_INFO(retpoline, "Y");
+#endif
+
+static const struct modversion_info ____versions[]
+__used
+__attribute__((section("__versions"))) = {
+	{ 0xad1a7def, "module_layout" },
+	{ 0x6bc3fbc0, "__unregister_chrdev" },
+	{ 0xcfc78319, "__register_chrdev" },
+	{ 0xdb7305a1, "__stack_chk_fail" },
+	{ 0xf4fa543b, "arm_copy_to_user" },
+	{ 0x8f678b07, "__stack_chk_guard" },
+	{ 0xedc03953, "iounmap" },
+	{ 0x2e5810c6, "__aeabi_unwind_cpp_pr1" },
+	{ 0xe97c4103, "ioremap" },
+	{ 0x7c32d0f0, "printk" },
+	{ 0xb1ad28e0, "__gnu_mcount_nc" },
+};
+
+static const char __module_depends[]
+__used
+__attribute__((section(".modinfo"))) =
+"depends=";
+
+
+MODULE_INFO(srcversion, "81F0836419654AA6812719B");

temp/.temp_dev.ko.cmd

+cmd_/home/pi/Desktop/project/temp/temp_dev.ko := ld -r  -EL -T ./scripts/module-common.lds -T ./arch/arm/kernel/module.lds  --build-id  -o /home/pi/Desktop/project/temp/temp_dev.ko /home/pi/Desktop/project/temp/temp_dev.o /home/pi/Desktop/project/temp/temp_dev.mod.o ;  true

temp/.tmp_versions/temp_dev.mod

+/home/pi/Desktop/project/temp/temp_dev.ko
+/home/pi/Desktop/project/temp/temp_dev.o
+