From 752a7d249c79461b3dd77f6047ff3a917cbf3fb5 Mon Sep 17 00:00:00 2001
From: "Daniel P. Carvalho" <danieloak@gmail.com>
Date: Tue, 23 Jul 2019 16:07:17 -0600
Subject: [PATCH] configs/nucleo-l432kc:  Added Zero Cross sensor to
 nucleo-l432kc.

---
 configs/nucleo-l432kc/src/Makefile        |  4 ++++
 configs/nucleo-l432kc/src/nucleo-l432kc.h | 16 ++++++++++++++++
 configs/nucleo-l432kc/src/stm32_appinit.c | 11 +++++++++++
 3 files changed, 31 insertions(+)

diff --git a/configs/nucleo-l432kc/src/Makefile b/configs/nucleo-l432kc/src/Makefile
index a8ba102f8d..23adcbe525 100644
--- a/configs/nucleo-l432kc/src/Makefile
+++ b/configs/nucleo-l432kc/src/Makefile
@@ -80,6 +80,10 @@ ifeq ($(CONFIG_PWM),y)
 CSRCS += stm32_pwm.c
 endif
 
+ifeq ($(CONFIG_SENSORS_ZEROCROSS),y)
+  CSRCS += stm32_zerocross.c
+endif
+
 ifeq ($(CONFIG_TIMER),y)
 CSRCS += stm32_timer.c
 endif
diff --git a/configs/nucleo-l432kc/src/nucleo-l432kc.h b/configs/nucleo-l432kc/src/nucleo-l432kc.h
index bd0b6aa793..62afee8683 100644
--- a/configs/nucleo-l432kc/src/nucleo-l432kc.h
+++ b/configs/nucleo-l432kc/src/nucleo-l432kc.h
@@ -110,6 +110,10 @@
 
 #define GPIO_INT1         (GPIO_INPUT|GPIO_FLOAT|GPIO_PORTA|GPIO_PIN3)
 
+/* ZERO CROSS pin definition */
+
+#define GPIO_ZEROCROSS    (GPIO_INPUT|GPIO_FLOAT|GPIO_PORTA|GPIO_PIN0)
+
 /************************************************************************************
  * Public Data
  ************************************************************************************/
@@ -231,6 +235,18 @@ int stm32_ina226initialize(FAR const char *devpath);
 int stm32_ina219initialize(FAR const char *devpath);
 #endif
 
+/****************************************************************************
+ * Name: stm32_zerocross_initialize
+ *
+ * Description:
+ *   Initialize and register the zero cross driver
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SENSORS_ZEROCROSS
+int stm32_zerocross_initialize(void);
+#endif
+
 /****************************************************************************
  * Name: board_timer_driver_initialize
  *
diff --git a/configs/nucleo-l432kc/src/stm32_appinit.c b/configs/nucleo-l432kc/src/stm32_appinit.c
index 48f2147349..cb98ccf2f6 100644
--- a/configs/nucleo-l432kc/src/stm32_appinit.c
+++ b/configs/nucleo-l432kc/src/stm32_appinit.c
@@ -274,6 +274,17 @@ int board_app_initialize(uintptr_t arg)
     }
 #endif
 
+#ifdef CONFIG_SENSORS_ZEROCROSS
+  /* Configure the zero-crossing driver */
+
+  ret = stm32_zerocross_initialize();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize Zero-Cross, error %d\n", ret);
+      return ret;
+    }
+#endif
+
 #ifdef CONFIG_TIMER
   /* Initialize and register the timer driver */