Hi, Deva
Thanks advice and sample code.
Before, I used fputs() and fgets(). then, fputs() was not able to be
done though fgets() was able to be done. filepath permission is set to
777 beforehand.
Is the place of the folder path(.data/misc/cal/) bad? or should I
use fwrite() ?
I try by using fwrite.
sensors.c (file write test)
------------
#define CALIBRATION_FILE "/data/misc/cal/sensors.cal"
static native_handle_t* control__open_data_source(struct
sensors_control_context_t *dev)
{
LOGD("control__open_data_source()");
native_handle_t* handle;
int fd = open_input(O_RDONLY);
if (fd < 0) {
return NULL;
}
handle = native_handle_create(1, 0);
handle->data[0] = fd;
LOGD("open calibration file '%s'",CALIBRATION_FILE);
if ((fp = fopen(CALIBRATION_FILE, "rw")) == NULL) {
LOGE("Couldn't open '%s'",CALIBRATION_FILE);
} else {
fputs("ABCDEFGHIJKLMN", fp);
fclose(fp);
}
return handle;
}
--
nama
On Wed, Jun 16, 2010 at 3:51 AM, Deva R <[email protected]> wrote:
> There might be better ways, but to start with you can refer our sample debug
> code, where we dump video frame data to files in filesystem.
> http://git.omapzoom.org/?p=platform/hardware/ti/omap3.git;a=blob;f=liboverlay/v4l2_utils.c;h=cdedf1bb9af61eb0b2aa831840fd611993603e7f;hb=refs/heads/eclair#l719
>
> from native libraries, you can do file operations with below calls..
> fopen(filepath)
> fwrite()
> fclose()
>
> Also, you might want to make sure the filepath have write access for the
> process (a simple `chmod 777 <filepath>` will suffice)
>
> -Deva
>
> On Tue, Jun 15, 2010 at 8:59 AM, namaRyo <[email protected]> wrote:
>>
>> Hi, this is nama.
>>
>> I made "sensors.default.so" for arm9 dev.board - Armadillo440 (http://
>> www.atmark-techno.com/products/armadillo/a440)
>> use I2C accelerometer and magnetic filed sensors. and calculate to
>> orientation.
>>
>> I want to save sensor calibration data to internal file at
>> "sensors.c". and try, but, permission error occurred.
>>
>> How can I write to internal file system from "sensors.default.so" ?
>>
>> thanks,
>>
>> --
>> unsubscribe: [email protected]
>> website: http://groups.google.com/group/android-porting
>
>
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