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Fix pcsensor.c to print error to stderr

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This commit is contained in:
shakemid 2017-08-31 09:47:57 +09:00
parent 0cb7b00c2b
commit 3519bbbd47
1 changed files with 9 additions and 9 deletions
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18
pcsensor.c
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@ -108,7 +108,7 @@ libusb_device_handle* setup_libusb_access() {
}
if(!(lvr_winusb = find_lvr_winusb())) {
printf("Couldn't find the USB device, Exiting\n");
fprintf(stderr, "Couldn't find the USB device, Exiting\n");
return NULL;
}
@ -120,7 +120,7 @@ libusb_device_handle* setup_libusb_access() {
if (libusb_set_configuration(lvr_winusb, 0x01) < 0) {
printf("Could not set configuration 1\n");
fprintf(stderr, "Could not set configuration 1\n");
return NULL;
}
@ -128,12 +128,12 @@ libusb_device_handle* setup_libusb_access() {
// Microdia tiene 2 interfaces
int errno;
if ( ( errno = libusb_claim_interface(lvr_winusb, INTERFACE1) ) != 0) {
printf("Could not claim interface. Error:%d\n", errno);
fprintf(stderr, "Could not claim interface. Error:%d\n", errno);
return NULL;
}
if ( ( errno = libusb_claim_interface(lvr_winusb, INTERFACE2) ) != 0) {
printf("Could not claim interface. Error:%d\n", errno);
fprintf(stderr, "Could not claim interface. Error:%d\n", errno);
return NULL;
}
@ -147,7 +147,7 @@ libusb_device_handle *find_lvr_winusb() {
handle = libusb_open_device_with_vid_pid(ctx, VENDOR_ID, PRODUCT_ID);
if (!handle) {
printf("Could not open USB device\n");
fprintf(stderr, "Could not open USB device\n");
return NULL;
}
return handle;
@ -201,13 +201,13 @@ void interrupt_transfer(libusb_device_handle *dev) {
s = libusb_interrupt_transfer(dev, endpoint_Int_out, question, reqIntLen, &r, timeout);
if( r < 0 )
{
printf("USB write failed:%d", s);
fprintf(stderr, "USB write failed:%d", s);
perror("USB interrupt write"); bad("USB write failed");
}
s = libusb_interrupt_transfer(dev, endpoint_Int_in, answer, reqIntLen, &r, timeout);
if( r != reqIntLen )
{
printf("USB read failed:%d", s);
fprintf(stderr, "USB read failed:%d", s);
perror("USB interrupt read"); bad("USB read failed");
}
@ -227,7 +227,7 @@ void interrupt_read(libusb_device_handle *dev) {
s = libusb_interrupt_transfer(dev, endpoint_Int_in, answer, reqIntLen, &r, timeout);
if( r != reqIntLen )
{
printf("USB read failed: %d\n", s);
fprintf(stderr, "USB read failed: %d\n", s);
perror("USB interrupt read"); bad("USB read failed");
}
@ -247,7 +247,7 @@ void interrupt_read_temperatura(libusb_device_handle *dev, float *tempInC, float
s = libusb_interrupt_transfer(dev, endpoint_Int_in, answer, reqIntLen, &r, timeout);
if( r != reqIntLen )
{
printf("USB read failed: %d\n", s);
fprintf(stderr, "USB read failed: %d\n", s);
perror("USB interrupt read"); bad("USB read failed");
}