Fix for HobbyKing boards.

src/drivers/boards/px4fmu-v2/board_config.h

@@ -398,7 +398,7 @@
 #define GPIO_VDD_BRICK_VALID	(GPIO_INPUT|GPIO_PULLUP|GPIO_PORTB|GPIO_PIN5)
 #define GPIO_VDD_SERVO_VALID	(GPIO_INPUT|GPIO_PULLUP|GPIO_PORTB|GPIO_PIN7)
 #define GPIO_VDD_USB_VALID		(GPIO_INPUT|GPIO_PULLUP|GPIO_PORTC|GPIO_PIN0)
-#define GPIO_VDD_3V3_SENSORS_EN	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTE|GPIO_PIN3)
+#define GPIO_VDD_3V3_SENSORS_EN	(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_SET|GPIO_PORTE|GPIO_PIN3)
 #define GPIO_VDD_5V_HIPOWER_OC	(GPIO_INPUT|GPIO_PULLUP|GPIO_PORTE|GPIO_PIN10)
 #define GPIO_VDD_5V_PERIPH_OC	(GPIO_INPUT|GPIO_PULLUP|GPIO_PORTE|GPIO_PIN15)
 

src/drivers/boards/px4fmu-v2/px4fmu_init.c

@@ -324,10 +324,6 @@ stm32_boardinitialize(void)
 	/* configure LEDs */
 	board_autoled_initialize();
 
-	/* Start with the Sensor voltage off */
-
-	stm32_configgpio(GPIO_VDD_3V3_SENSORS_EN);
-
 	/* configure ADC pins */
 
 	stm32_configgpio(GPIO_ADC1_IN2);	/* BATT_VOLTAGE_SENS */
@@ -339,6 +335,7 @@ stm32_boardinitialize(void)
 
 	/* configure power supply control/sense pins */
 	stm32_configgpio(GPIO_VDD_5V_PERIPH_EN);
+	stm32_configgpio(GPIO_VDD_3V3_SENSORS_EN);
 	stm32_configgpio(GPIO_VDD_BRICK_VALID);
 	stm32_configgpio(GPIO_VDD_SERVO_VALID);
 	stm32_configgpio(GPIO_VDD_USB_VALID);
@@ -346,9 +343,8 @@ stm32_boardinitialize(void)
 	stm32_configgpio(GPIO_VDD_5V_PERIPH_OC);
 
 
-	/* configure SPI interfaces is deferred to board_app_initialize
-	 * to delay the sensor power up with out adding a delay
-	 */
+	/* configure SPI interfaces */
+	stm32_spiinitialize();
 
 }
 
@@ -384,7 +380,6 @@ static struct sdio_dev_s *sdio;
 
 __EXPORT int board_app_initialize(uintptr_t arg)
 {
-
 #if defined(CONFIG_HAVE_CXX) && defined(CONFIG_HAVE_CXXINITIALIZE)
 
 	/* run C++ ctors before we go any further */
@@ -422,21 +417,7 @@ __EXPORT int board_app_initialize(uintptr_t arg)
 
 #endif // BOARD_HAS_SIMPLE_HW_VERSIONING
 
-	/* Bring up the Sensor power */
-
-	stm32_gpiowrite(GPIO_VDD_3V3_SENSORS_EN, 1);
-
-	/* Ensure the power is on 1 ms before we drive the GPIO pins */
-
-	usleep(1000);
-
-	/* Now it is ok to drive the pins high so configure SPI GPIO */
-
-	stm32_spiinitialize();
-
-
 	/* configure the high-resolution time/callout interface */
-
 	hrt_init();
 
 	param_init();