Hi
I am working on linux RH9 kernel 2.4.32 and have usb device board
for which windows device driver is already working successfully.
But I am not able to get it working on linux I have tried basic
commands for device in userspace programs using ioctls write/read reports.
Below is my source code , please help..
>>>>>>>>CODE_START
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <asm/types.h>
#include <linux/hiddev.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <string.h>
#ifndef HID_MAX_USAGES
#define HID_MAX_USAGES 1024
#endif
#define READ_BUFFER_LENGTH 64
#define RPT_SIZE 64
int getUsageCode_Out0( int );
unsigned long usageCode;
struct hiddev_report_info rep_info;
unsigned char ReportStr[6] = {
0x01,
0x04, // EOT;
'C', // C;
'v', // v;
0x05 , // ENQ;
0x00 ,
};
int getUsageCode_Out0( int fd )
{
struct hiddev_usage_ref uref;
int rc;
uref.report_type = HID_REPORT_TYPE_OUTPUT;
uref.report_id = 0x01;
uref.field_index = 0;
uref.usage_index = 0;
rc = ioctl( fd, HIDIOCGUCODE, &uref );
if (rc < 0) return rc;
usageCode = uref.usage_code;
printf("value of the uses code is %x \n",usageCode);
return 0;
}
void sendstring(int fd, unsigned char *psz)
{
struct hiddev_usage_ref uref;
struct hiddev_event eventset[6] ;
int i, j;
unsigned char c;
struct timeval timeout;
fd_set readFDS ;
timeout.tv_sec = 0;
timeout.tv_usec = 100000 ;
FD_ZERO(&readFDS);
FD_SET(fd,&readFDS);
select((fd+1),&readFDS,NULL,NULL,&timeout);
i = 0;
psz = CoinReportStr ;
fprintf(stderr," sendstring start %d\n",CoinReportStr[0]);
for (j = 0; j < 6; j++)
{
fprintf(stderr,"NUM: %d %d ::\n ", j, psz[j]);
uref.report_type = HID_REPORT_TYPE_OUTPUT;
uref.report_id = 0x01;
uref.field_index = 0;
uref.usage_code = usageCode;
uref.usage_index = j ;
uref.value = psz[j];
if (ioctl(fd, HIDIOCSUSAGE, &uref) < 0)
fprintf(stderr,"Error (SUSAGE) while talking to the UPS");
}
fprintf(stderr,"NEW\n");
rep_info.report_type = HID_REPORT_TYPE_OUTPUT ;
rep_info.report_id = 0x01 ;
rep_info.num_fields = 1;
if (ioctl(fd,HIDIOCSREPORT,&rep_info) <0)
{
fprintf(stderr,"ERROR: sendstring() failed: HIOIOCSREPORT\n");
return ;
}
else
fprintf(stderr,"SUCCESS...\n");
}
static void showReports(int fd)
{
struct hiddev_field_info finfo;
struct hiddev_usage_ref uref;
struct hiddev_event eventset[6] ;
struct hiddev_event events ;
int i, j, ret;
struct timeval timeout;
fd_set readFDS ;
timeout.tv_sec = 0;
timeout.tv_usec = 100000 ;
FD_ZERO(&readFDS);
FD_SET(fd,&readFDS);
select((fd+1),&readFDS,NULL,NULL,&timeout);
i = read(fd,(void *)&events,sizeof(struct hiddev_event));
fprintf(stderr,"DEBUG::RAMRAM: ii: %d\n",i);
rep_info.report_type = HID_REPORT_TYPE_INPUT;
rep_info.report_id = 0x03;
ret = ioctl(fd, HIDIOCGREPORTINFO, &rep_info);
ret = ioctl(fd, HIDIOCGREPORT, &rep_info);
// Get Reports
while (ret >= 0)
{
printf("HIDIOCGREPORTINFO: report_id=0x%X (%u fields)\n",
rep_info.report_id, rep_info.num_fields);
// Get Fields
for (i = 0; i < rep_info.num_fields; i++)
{
finfo.report_type = rep_info.report_type;
finfo.report_id = rep_info.report_id;
finfo.field_index = i;
ioctl(fd, HIDIOCGFIELDINFO, &finfo);
uref.report_type = finfo.report_type;
uref.report_id = finfo.report_id;
for (j=0;j<finfo.maxusage;j++)
{
// Get usages
uref.field_index = i;
uref.usage_index = j;
ioctl(fd, HIDIOCGUCODE, &uref);
ioctl(fd, HIDIOCGUSAGE, &uref);
ret = ioctl(fd, HIDIOCGREPORT, &rep_info);
printf(" >> usage_index=%u usage_code=0x%X () value=0x%X\n",
uref.usage_index,
uref.usage_code,
uref.value);
}
ret = ioctl(fd, HIDIOCGREPORT, &rep_info);
rep_info.report_id |= HID_REPORT_ID_NEXT;
ret = ioctl(fd, HIDIOCGREPORTINFO, &rep_info);
}
printf("\n");
}
}
int main(void)
{
int fd;
struct hiddev_devinfo device_info;
struct hiddev_string_descriptor string_desc;
struct hiddev_report_info rep_info;
char name[256] = {0};
char receive_buffer[RPT_SIZE];
int index;
int rc = 0;
fd = open("/dev/usb/hiddev0", O_RDWR);
if(fd < 0) {
perror("open of hiddev0 failed");
exit(errno);
}
if (ioctl(fd, HIDIOCINITREPORT,0) < 0)
{
fprintf(stderr,"ERROR: HIDIOCINREPORT FAILED \n");
exit(1);
}
getUsageCode_Out0(fd);
sendstring(fd,CoinReportStr);
showReports(fd);
close(fd);
return 0;
}
>>>>>>>>>>CODE_END
Regards
Himanshu Bafna
http://www.patni.com
World-Wide Partnerships. World-Class Solutions.
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