[GitHub] matthewwarnes commented on a change in pull request #1024: lis2dw12: Support sleep change event for notifications

[GitBox <gi...@apache.org>]

matthewwarnes commented on a change in pull request #1024: lis2dw12: Support sleep change event for notifications
URL: https://github.com/apache/mynewt-core/pull/1024#discussion_r181870451
 
 

 ##########
 File path: hw/drivers/sensors/lis2dw12/src/lis2dw12.c
 ##########
 @@ -1946,89 +1943,106 @@ init_intpin(struct lis2dw12 * lis2dw12, hal_gpio_irq_handler_t handler,
     if (rc != 0) {
         LIS2DW12_ERR("Failed to initialise interrupt pin %d\n", pin);
         return rc;
-    } 
+    }
 
     return 0;
 }
 
 static int
-enable_interrupt(struct sensor * sensor, uint8_t int_to_enable)
+enable_interrupt(struct sensor *sensor, uint8_t int_to_enable, uint8_t int_num)
 {
     struct lis2dw12 *lis2dw12;
-    struct lis2dw12_private_driver_data *pdd;
+    struct lis2dw12_pdd *pdd;
     struct sensor_itf *itf;
     uint8_t reg;
     int rc;
 
+    if (!int_to_enable) {
+        rc = SYS_EINVAL;
+        goto err;
+    }
+
     lis2dw12 = (struct lis2dw12 *)SENSOR_GET_DEVICE(sensor);
     itf = SENSOR_GET_ITF(sensor);
     pdd = &lis2dw12->pdd;
 
     rc = lis2dw12_clear_int(itf, &reg);
     if (rc) {
-        return rc;
+        goto err;
     }
-    
+
     /* if no interrupts are currently in use enable int pin */
-    if (pdd->int_enable == 0) {
-        hal_gpio_irq_enable(itf->si_ints[pdd->int_num].host_pin);
+    if (!pdd->int_enable) {
+        hal_gpio_irq_enable(itf->si_ints[int_num].host_pin);
 
         rc = lis2dw12_set_int_enable(itf, 1);
         if (rc) {
-            return rc;
+            goto err;
         }
     }
 
-    /*update which interrupts are enabled */
-    pdd->int_enable |= int_to_enable;
-    
+    pdd->int_enable++;
+
     /* enable interrupt in device */
-    rc = lis2dw12_set_int1_pin_cfg(itf, pdd->int_enable);
+    if (int_num == 0) {
+        rc = lis2dw12_set_int1_pin_cfg(itf, int_to_enable);
 
 Review comment:
   Previously it was ORed in the enable_interrupt function. If it should be done in the set_int1_pin_cfg function that is also fine. I believe it is quite important because without the ORing if a stream read is performed when even a single notification is registered the stream read will reset the interrupt for the notification.

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services