Merge branch 'master' of github.com:PX4/Firmware into paul_estimator

src/drivers/drv_rc_input.h

@@ -60,7 +60,7 @@
 /**
  * Maximum number of R/C input channels in the system. S.Bus has up to 18 channels.
  */
-#define RC_INPUT_MAX_CHANNELS	20
+#define RC_INPUT_MAX_CHANNELS	18
 
 /**
  * Input signal type, value is a control position from zero to 100

src/systemcmds/esc_calib/esc_calib.c

@@ -148,6 +148,7 @@ esc_calib_main(int argc, char *argv[])
 
 		case 'l':
 			/* Read in custom low value */
+			pwm_low = strtoul(optarg, &ep, 0);
 			if (*ep != '\0' || pwm_low < PWM_LOWEST_MIN || pwm_low > PWM_HIGHEST_MIN)
 				usage("low PWM invalid");
 			break;