fmuv5x:Use ADC3 for HW VER/REV detection

fmu-v5x:hrt needs to be running for ADC time out

       Fixes bug introduced in 320d2e adding platform layer.

boards/px4/fmu-v5x/nuttx-config/nsh/defconfig

@@ -162,6 +162,7 @@ CONFIG_START_DAY=30
 CONFIG_START_MONTH=11
 CONFIG_STDIO_BUFFER_SIZE=32
 CONFIG_STM32F7_ADC1=y
+CONFIG_STM32F7_ADC3=y
 CONFIG_STM32F7_BBSRAM=y
 CONFIG_STM32F7_BBSRAM_FILES=5
 CONFIG_STM32F7_BKPSRAM=y

boards/px4/fmu-v5x/src/board_config.h

@@ -318,6 +318,7 @@
 #define ADC_ADC1_6V6_CHANNEL                    /* PC0 */  ADC1_CH(10)
 #define ADC_SCALED_VDD_3V3_SENSORS4_CHANNEL     /* PC2 */  ADC1_CH(12)
 #define ADC_ADC1_3V3_CHANNEL                    /* PC3 */  ADC1_CH(13)
+
 #define ADC_HW_VER_SENSE_CHANNEL                /* PF4 */  ADC3_CH(14)
 #define ADC_HW_REV_SENSE_CHANNEL                /* PF5 */  ADC3_CH(15)
 
@@ -328,12 +329,16 @@
 	 (1 << ADC_SCALED_V5_CHANNEL)               | \
 	 (1 << ADC_ADC1_6V6_CHANNEL)                | \
 	 (1 << ADC_SCALED_VDD_3V3_SENSORS4_CHANNEL) | \
-	 (1 << ADC_ADC1_3V3_CHANNEL)                | \
-	 (1 << ADC_HW_VER_SENSE_CHANNEL)            | \
-	 (1 << ADC_HW_REV_SENSE_CHANNEL))
+	 (1 << ADC_ADC1_3V3_CHANNEL))
 
 /* HW has to large of R termination on ADC todo:change when HW value is chosen */
 
+#define HW_REV_VER_ADC_BASE STM32_ADC3_BASE
+
+#define SYSTEM_ADC_BASE STM32_ADC1_BASE
+
+
+
 #define BOARD_ADC_OPEN_CIRCUIT_V     (5.6f)
 
 /* HW Version and Revision drive signals Default to 1 to detect */

boards/px4/fmu-v5x/src/init.c

@@ -222,6 +222,10 @@ __EXPORT int board_app_initialize(uintptr_t arg)
 	VDD_3V3_SENSORS4_EN(true);
 	VDD_3V3_SPEKTRUM_POWER_EN(true);
 
+	/* Need hrt running before using the ADC */
+
+	px4_platform_init();
+
 
 	if (OK == board_determine_hw_info()) {
 		syslog(LOG_INFO, "[boot] Rev 0x%1x : Ver 0x%1x %s\n", board_get_hw_revision(), board_get_hw_version(),
@@ -231,7 +235,6 @@ __EXPORT int board_app_initialize(uintptr_t arg)
 		syslog(LOG_ERR, "[boot] Failed to read HW revision and version\n");
 	}
 
-	px4_platform_init();
 
 	/* configure the DMA allocator */