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Fixed gcc -Wall warnings

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This commit is contained in:
Eric Jiang 2012-04-05 17:29:45 -04:00
parent 5d9ebf250c
commit 0d4982a1d6
2 changed files with 6 additions and 6 deletions
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2
Makefile
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@ -1,6 +1,6 @@
LDLIBS=-lm -lusb-1.0 LDLIBS=-lm -lusb-1.0
CC=gcc CC=gcc
CFLAGS=-Os CFLAGS=-Os -Wall
DOCCO=docco DOCCO=docco
usbscale: usbscale.c scales.h usbscale: usbscale.c scales.h

10
usbscale.c
View File

@ -59,7 +59,7 @@ static libusb_device* find_scale(libusb_device**);
// it, printing out the result to the screen. It also returns a 1 if the // it, printing out the result to the screen. It also returns a 1 if the
// program should read again (i.e. continue looping). // program should read again (i.e. continue looping).
// //
static int print_scale_data(char*); static int print_scale_data(unsigned char*);
// //
// **UNITS** is an array of all the unit abbreviations as set forth by *HID // **UNITS** is an array of all the unit abbreviations as set forth by *HID
// Point of Sale Usage Tables*, version 1.02, by the USB Implementers' Forum. // Point of Sale Usage Tables*, version 1.02, by the USB Implementers' Forum.
@ -162,8 +162,7 @@ int main(void)
* http://rowsandcolumns.blogspot.com/2011/02/read-from-magtek-card-swipe-reader-in.html * http://rowsandcolumns.blogspot.com/2011/02/read-from-magtek-card-swipe-reader-in.html
*/ */
unsigned char data[WEIGH_REPORT_SIZE]; unsigned char data[WEIGH_REPORT_SIZE];
unsigned int len; int len;
int continue_reading = 0;
int scale_result = -1; int scale_result = -1;
// //
@ -256,7 +255,7 @@ int main(void)
// the scale data indicates that some error occurred and that the program // the scale data indicates that some error occurred and that the program
// should terminate. // should terminate.
// //
static int print_scale_data(char* dat) { static int print_scale_data(unsigned char* dat) {
// //
// We keep around `lastStatus` so that we're not constantly printing the // We keep around `lastStatus` so that we're not constantly printing the
@ -362,7 +361,7 @@ static libusb_device* find_scale(libusb_device **devs)
int r = libusb_get_device_descriptor(dev, &desc); int r = libusb_get_device_descriptor(dev, &desc);
if (r < 0) { if (r < 0) {
fprintf(stderr, "failed to get device descriptor"); fprintf(stderr, "failed to get device descriptor");
return; return NULL;
} }
int i; int i;
for (i = 0; i < scalesc; i++) { for (i = 0; i < scalesc; i++) {
@ -407,5 +406,6 @@ static libusb_device* find_scale(libusb_device **devs)
} }
} }
} }
return NULL;
} }