Hi3516A开发--GV7601 硬件设计
2024-06-09 22:59:53
GV7601 硬件部分官方手册上有给一些示例，但是不太完整。
这里贴出我们设计的原理图，仅供参考。
网上找到一篇关于GV7601 SPI通信的例子
参看:海思3531 GV7601 SPI通信问题
/*生成ko文件源代码*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <asm/uaccess.h>
#include <linux/delay.h>
//#include <bsp.h>
#include <asm/io.h>#include <linux/sched.h>
#include <linux/delay.h> //OK
#include <linux/fs.h> //OK#include <asm/irq.h> //OK
//#include <mach/regs-gpio.h>
//#include <mach/hardware.h> //OK #include <linux/miscdevice.h> /**鍐呮牳鐗堟湰2.6.32鍔犱互涓嬪ご鏂囦欢***/
//#include <mach/regs-gpio.h>
#include <linux/mm.h> //OK
#include <linux/pci.h> //OK
#include <linux/moduleparam.h> //OK
#include <linux/slab.h> //OK
#include <linux/errno.h> //OK
#include <linux/ioctl.h> //OK
#include <linux/cdev.h> //OK
#include <linux/string.h> //OK
#include <linux/list.h> //OK#include <asm/atomic.h>
#include <asm/unistd.h>#define PDEBUG
#ifdef PDEBUG #define PLOG(fmt,args...) printk(fmt,##args)
#else #define PLOG(fmt,args...) /*do nothing*/
#endif #define DEVICE_NAME "GV7601"
#define GV7601_MAJOR 230 //device numtypedef struct tem{
unsigned short address;
unsigned short value;
}command;command temp;//寄存器读写定义
#define HW_REG(reg) *((volatile unsigned long *)(reg))
#define Hi3516_gpio_cfgpin(addr,dir) HW_REG(addr) = dir
#define Hi3516_gpio_setpin(addr,value) HW_REG(addr) = value
#define Hi3516_gpio_getpin(addr) HW_REG(addr)//定义地址偏移
#define CPU_BASE 0x200F0000
#define OFFSET_GPIO2_4 0x00A4 //cs
#define OFFSET_GPIO2_5 0x00A8 //SCLK
#define OFFSET_GPIO2_6 0x00AC //TDI
#define OFFSET_GPIO2_7 0x00B0 //TDO#define GPIO2_4_SET IO_ADDRESS(0x200F00A4)
#define GPIO2_5_SET IO_ADDRESS(0x200F00A8)
#define GPIO2_6_SET IO_ADDRESS(0x200F00AC)
#define GPIO2_7_SET IO_ADDRESS(0x200F00B0)
#define GPIO1_6_SET IO_ADDRESS(0x200F00D4)#define GPIO2_BASE 0x20170000
#define GPIO1_BASE 0x20160000
#define GPIO_DIR 0x400
#define GPIO_DATA2_4 IO_ADDRESS(0x20170040) //CS 1<<6 IO_ADDRESS(GPIO2_BASE+(1<<4))
#define GPIO_DATA2_5 IO_ADDRESS(0x20170080) //sclk 1<<7
#define GPIO_DATA2_6 IO_ADDRESS(0x20170100) //tdi 1<<8
#define GPIO_DATA2_7 IO_ADDRESS(0x20170200) //tdo 1<<9
#define GPIO_DATA1_6 IO_ADDRESS(0x20160100) //reset 1<<8#define GPIO2_DIR IO_ADDRESS(0x20170400)
#define GPIO1_DIR IO_ADDRESS(0x20160400)#define PIN_SDO 9 //
#define PIN_SDI 8
#define PIN_SCLK 7
#define PIN_CS 6 // #define SPI_CMD 0
#define SPI_DATA 1
#define FUN_GPIO 0 static int spi_setcs_gv7601(int ) ;
static int spi_sethigh(int );
static int spi_setlow(int ) ;
static unsigned int spi_readIO_gv7601(int ) ;
static int spi_init_gv7601(void) ;
void SPI_send_gv7601(unsigned short,unsigned short ) ;
unsigned short spi_read_gv7601(unsigned short ) ;
static ssize_t spi_write_data_gv7601(struct file *, command __user *, size_t , loff_t *);
static ssize_t spi_read_data_gv7601(struct file *, command __user *, size_t , loff_t *);
static void set_value(void) ;
static int gv7601_ioctl(struct inode *,struct file *,unsigned int ,unsigned long );// 换成海思的片选信号，两路，低选中一路，高选中一路
static int spi_setcs_gv7601(int number)
{ switch(number){case 1:Hi3516_gpio_setpin(GPIO_DATA2_4,Hi3516_gpio_getpin(GPIO_DATA2_4)&0xFFEF); //拉低break;case 2:Hi3516_gpio_setpin(GPIO_DATA2_4,Hi3516_gpio_getpin(GPIO_DATA2_4)|0x0010); //拉高break; }return 0;
} // set gpio pin level, high: 1, low: 0
// cs --6
// sclik --7
// tdi --8
// tdo --9
// 管脚拉高
static int spi_sethigh(int pin)
{ Hi3516_gpio_setpin(GPIO2_DIR,Hi3516_gpio_getpin(GPIO2_DIR)|(1<<(pin-2)));Hi3516_gpio_setpin(IO_ADDRESS(GPIO2_BASE+(1<<pin)),Hi3516_gpio_getpin(IO_ADDRESS(GPIO2_BASE+(1<<pin)))|(1<<(pin-2)));return 0;
} //管脚拉低
static int spi_setlow(int pin)
{ Hi3516_gpio_setpin(GPIO2_DIR,Hi3516_gpio_getpin(GPIO2_DIR)|(1<<(pin-2)));Hi3516_gpio_setpin(IO_ADDRESS(GPIO2_BASE+(1<<pin)),Hi3516_gpio_getpin(IO_ADDRESS(GPIO2_BASE+(1<<pin)))&(~(1<<(pin-2))));return 0;
} // cs --4
// sclik --5
// tdi --6
// tdo --7
// 读管脚数据
static unsigned int spi_readIO_gv7601(int pin)
{ int i;Hi3516_gpio_setpin(GPIO2_DIR,Hi3516_gpio_getpin(GPIO2_DIR)&(~(1<<(pin-2))));i=Hi3516_gpio_getpin(IO_ADDRESS(GPIO2_BASE+(1<<pin)));if (i!=0)i=1;return i;
} // select pin used for gpio 配置管脚为GPIO
// 换成海思的管脚配置即可
static int spi_init_gv7601()
{ //配置成GPIO口Hi3516_gpio_setpin(GPIO2_4_SET,Hi3516_gpio_getpin(GPIO2_4_SET)&0xFFFC);//csHi3516_gpio_setpin(GPIO2_5_SET,Hi3516_gpio_getpin(GPIO2_5_SET)&0xFFFC);//sclkHi3516_gpio_setpin(GPIO2_6_SET,Hi3516_gpio_getpin(GPIO2_6_SET)&0xFFFC);//tdiHi3516_gpio_setpin(GPIO2_7_SET,Hi3516_gpio_getpin(GPIO2_7_SET)&0xFFFC);//tdoHi3516_gpio_setpin(GPIO1_6_SET,Hi3516_gpio_getpin(GPIO1_6_SET)&0xFFFC);//reset//配置GPIO输入输出方向Hi3516_gpio_setpin(GPIO2_DIR,Hi3516_gpio_getpin(GPIO2_DIR)|0x0070);//cs sclk tdi outHi3516_gpio_setpin(GPIO2_DIR,Hi3516_gpio_getpin(GPIO2_DIR)&0xFF8F);//td0 inHi3516_gpio_setpin(GPIO1_DIR,Hi3516_gpio_getpin(GPIO2_DIR)|0x0040);//reset out//除clk以外全部置高spi_sethigh(6);spi_setlow(7);spi_sethigh(8);spi_sethigh(9);return 0;
} void SPI_send_gv7601(unsigned short address,unsigned short wdata)
{ unsigned short vsignbit; // 写地址 16位spi_setlow(PIN_CS);ndelay(1000);for(vsignbit=0x8000;vsignbit>0;vsignbit>>=1) { if(address&vsignbit) spi_sethigh(PIN_SDI);else spi_setlow(PIN_SDI);ndelay(1000);spi_setlow(PIN_SCLK);ndelay(2000); spi_sethigh(PIN_SCLK); ndelay(1000); } ndelay(1000); spi_setlow(PIN_SCLK);//spi_setlow(PIN_SDI);//spi_setlow(PIN_SDO);udelay(100);//写数据 16位 for(vsignbit=0x8000;vsignbit>0;vsignbit>>=1) { if(wdata&vsignbit) spi_sethigh(PIN_SDI);else spi_setlow(PIN_SDI);ndelay(1000);spi_setlow(PIN_SCLK);ndelay(2000); spi_sethigh(PIN_SCLK); ndelay(1000); } //spi_sethigh(PIN_SDI);ndelay(1000); spi_setlow(PIN_SCLK);//spi_setlow(PIN_SCLK);//udelay(300);//spi_setlow(PIN_SDI);ndelay(1000);spi_sethigh(PIN_CS);
} unsigned short spi_read_gv7601(unsigned short address)
{ unsigned short vsignbit,r_data=0; //写命令字spi_setlow(PIN_CS);ndelay(1000);for(vsignbit=0x8000;vsignbit>0;vsignbit>>=1) { if(address&vsignbit) spi_sethigh(PIN_SDI);else spi_setlow(PIN_SDI);ndelay(1000);spi_setlow(PIN_SCLK);ndelay(2000); spi_sethigh(PIN_SCLK); ndelay(1000); } //spi_sethigh(PIN_SDI);ndelay(1000);spi_setlow(PIN_SCLK);//udelay(300);spi_setlow(PIN_SDI);udelay(10);for(vsignbit=0x8000;vsignbit>0;vsignbit>>=1) { spi_setlow(PIN_SCLK);ndelay(1000);if(spi_readIO_gv7601(PIN_SDO)) //读 TDO{ r_data = r_data|vsignbit; } ndelay(1000); spi_sethigh(PIN_SCLK); ndelay(2000); } spi_setlow(PIN_SCLK);ndelay(1000);spi_sethigh(PIN_CS);return r_data;
} //向寄存器写入数据
static ssize_t spi_write_data_gv7601(struct file *pFile, command __user *pData, size_t count, loff_t *off)
{printk("in the write function\n");//加片选?//ndelay(100);memcpy(&temp,pData,count);unsigned short address, wdata;address = temp.address;unsigned short writecommand = 0x0000;wdata = temp.value;writecommand = writecommand + address;SPI_send_gv7601(writecommand,wdata);//udelay(300);//SPI_send_gv7601(wdata);//spi_setlow(PIN_SCLK);return count;
}static ssize_t spi_read_data_gv7601(struct file *pFile, command __user *pData, size_t count, loff_t *off)
{//加片选?printk("in the read function\n");unsigned short writecommand = 0x8000;memcpy(&temp,pData,count);writecommand = writecommand + temp.address;//SPI_send_gv7601(writecommand);//udelay(300);temp.value=spi_read_gv7601(writecommand);int ret;ret=copy_to_user(pData, &temp, sizeof(temp)); if(ret>0) { printk("copy data failed\n"); return -1; }//spi_setlow(PIN_SCLK);return count;
}
static void set_value()
{ //初始化配置
} static int gv7601_ioctl(struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg)
{
return 0;
}static struct file_operations gv7601_fops = {
.owner = THIS_MODULE,
.compat_ioctl = gv7601_ioctl,
.read = spi_read_data_gv7601,
.write = spi_write_data_gv7601,
}; static int __init spi_gv7601_init(void)
{ int ret; ret = register_chrdev(GV7601_MAJOR, DEVICE_NAME, &gv7601_fops); if (ret < 0) { printk(DEVICE_NAME " can't register major number\n"); return ret; }printk("Register spi control.\n"); spi_init_gv7601(); //reset the device//lowHi3516_gpio_setpin(IO_ADDRESS(GPIO1_BASE+(1<<8)),Hi3516_gpio_getpin(IO_ADDRESS(GPIO1_BASE+(1<<8)))&(~(1<<(8-2))));udelay(200);//highHi3516_gpio_setpin(IO_ADDRESS(GPIO1_BASE+(1<<8)),Hi3516_gpio_getpin(IO_ADDRESS(GPIO1_BASE+(1<<8)))|(1<<(8-2)));//spi_setcs_gv7601(1); //ndelay(20); //set_value(); //spi_setcs_gv7601(2); return 0;
}
static void __exit spi_gv7601_exit(void)
{ unregister_chrdev(GV7601_MAJOR, DEVICE_NAME); printk(KERN_INFO "unregister spi control.\n"); }
module_init(spi_gv7601_init);
module_exit(spi_gv7601_exit);
MODULE_LICENSE("GSPI");
MODULE_AUTHOR("Dong 100");
MODULE_VERSION("0.1");
MODULE_DESCRIPTION("gv7601 control driver"); /*读取的测试程序*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/select.h>
#include <sys/time.h>
#include <errno.h>
#include <string.h>
typedef struct tem{
unsigned short address;
unsigned short value;
}command;
command temp;int main(int argc, char *argv[])
{//printf("~~~~%s~~~~~",argv[1]);//printf("....%c....",*argv[1]+1);//printf("the char size is %d",sizeof(char));//printf("the number is %d",strlen(argv[1]));if (argc<=1||argc>3){printf("wrong command \n ./test_spi 000 for read from 000H\n ./test_spi 000 0012 for write 0012 to adress 000H\n");return 0;}else if (argc==2){if (strlen(argv[1])>3){printf("address is too long, 12bits max");return 0;}char a;int i;unsigned short result=0;printf("read address command\n");for (i=1;i<=strlen(argv[1]);i++){ a=*(argv[1]+i-1);if (a>='0'&&a<='9')a=a-'0';else if (a>='a'&&a<='f')a=a-'a'+10;else if (a>='A'&&a<='F')a=a-'A'+10;else return 0;//printf("now a is %x",a);//j=strlen(argv[1])-i;result=result+a;if (i!=strlen(argv[1]))result=result<<4;}printf("read from address%x\n",result);int fd;fd = open("/dev/spi_g",2);printf("open fd is %d\n",fd);int ret;temp.address=result;temp.value=0x0000;ret=read(fd,&temp,sizeof(temp));printf("read value is %x\n",temp.value);}else{if (strlen(argv[1])>3){printf("address is too long, 12bits max");return 0;}if (strlen(argv[2])>4){printf("data is too long, 16bits max");return 0;}char a;int i;unsigned short result,result2=0;//printf("read address command");printf("write to address comand\n");result=0;for (i=1;i<=strlen(argv[1]);i++){ a=*(argv[1]+i-1);if (a>='0'&&a<='9')a=a-'0';else if (a>='a'&&a<='f')a=a-'a'+10;else if (a>='A'&&a<='F')a=a-'A'+10;else return 0;//printf("now a is %x",a);//j=strlen(argv[1])-i;result=result+a;if (i!=strlen(argv[1]))result=result<<4;}result2=0;for (i=1;i<=strlen(argv[2]);i++){ a=*(argv[2]+i-1);if (a>='0'&&a<='9')a=a-'0';else if (a>='a'&&a<='f')a=a-'a'+10;else if (a>='A'&&a<='F')a=a-'A'+10;else return 0;//printf("now a is %x",a);//j=strlen(argv[1])-i;result2=result2+a;if (i!=strlen(argv[2]))result2=result2<<4;}printf("write to address%x,data is %x\n",result,result2);int fd;fd = open("/dev/spi_g",2);printf("open fd is %d\n",fd);int ret;temp.address=result;temp.value=result2;ret=write(fd,&temp,sizeof(temp));//printf("read value is %x\n",temp.value);}return 0;}/*Makefile*/
obj-m += ssp.o
all: arm-hisiv300-linux-gcc -g -Wall -o ssp_test ssp_test.cmake ARCH=arm CROSS_COMPILE=arm-hisiv300-linux- -C /home/zslf/hi3516a/Hi3516A_SDK_V1.0.5.0/osdrv/opensource/kernel/linux-3.4.y SUBDIRS=$(PWD) modulesrm *.o modules.* *.symvers *.mod.c
clean:@rm -rf ssp_test make ARCH=arm CROSS_COMPILE=arm-hisiv300-linux- -C /home/zslf/hi3516a/Hi3516A_SDK_V1.0.5.0/osdrv/opensource/kernel/linux-3.4.y SUBDIRS=$(PWD) clean按源码执行会出现错误：
/home/zslf/hi3516a/Hi3516A_SDK_V1.0.5.0/tools_test/spi测试/ssp.c:334:1: error: unknown field ‘ioctl’ specified in initializer.ioctl = gv7601_ioctl, ^问题是由于2.6.36内核之后 去掉了原来的ioctl，添加两个新的成员，所以会出错
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
所以修改源文件中file_operations内.ioctl 改为 .compat_ioctl 即可OK，编译通过，警告咱就忽略了
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