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HCSR04: Fixing static analysis issues

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Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>
This commit is contained in:
Abhishek Malik 2017-06-07 16:32:44 -07:00
parent b90c5a7710
commit 60379fca37
1 changed files with 7 additions and 1 deletions
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8
src/hcsr04/hcsr04.c
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@ -46,29 +46,35 @@ hcsr04_context hcsr04_init(int triggerPin, int echoPin) {
dev->trigPin = mraa_gpio_init(triggerPin); dev->trigPin = mraa_gpio_init(triggerPin);
if(!dev->trigPin) { if(!dev->trigPin) {
printf("Unable to initialize the trigger pin\n"); printf("Unable to initialize the trigger pin\n");
free(dev);
return NULL; return NULL;
} }
dev->echoPin = mraa_gpio_init(echoPin); dev->echoPin = mraa_gpio_init(echoPin);
if(!dev->echoPin) { if(!dev->echoPin) {
printf("Unable to initialize the echo pin\n"); printf("Unable to initialize the echo pin\n");
free(dev);
return NULL; return NULL;
} }
// Setting direction for the GPIO pins // Setting direction for the GPIO pins
if(mraa_gpio_dir(dev->trigPin, MRAA_GPIO_OUT) != MRAA_SUCCESS) { if(mraa_gpio_dir(dev->trigPin, MRAA_GPIO_OUT) != MRAA_SUCCESS) {
printf("Unable to set the direction of the trigger Pin\n"); printf("Unable to set the direction of the trigger Pin\n");
free(dev);
return NULL; return NULL;
} }
if(mraa_gpio_dir(dev->echoPin, MRAA_GPIO_IN) != MRAA_SUCCESS) { if(mraa_gpio_dir(dev->echoPin, MRAA_GPIO_IN) != MRAA_SUCCESS) {
printf("Unable to set the direction of the echo Pin\n"); printf("Unable to set the direction of the echo Pin\n");
free(dev);
return NULL; return NULL;
} }
// Setting the trigger pin to logic level 0 // Setting the trigger pin to logic level 0
if(mraa_gpio_write(dev->trigPin, 0) != MRAA_SUCCESS) if(mraa_gpio_write(dev->trigPin, 0) != MRAA_SUCCESS) {
free(dev);
return NULL; return NULL;
}
// initialize the interrupt counter // initialize the interrupt counter
dev->interruptCounter = 0; dev->interruptCounter = 0;