SAMV71-XULT: Add hooks for testing the PCF85263 RTC

configs/samv71-xult/src/sam_bringup.c

@@ -70,10 +70,14 @@
 #  include "sam_progmem.h"
 #endif
 
-#ifdef HAVE_RTC_DSXXXX
+#if defined(HAVE_RTC_DSXXXX) || defined(HAVE_RTC_PCF85263)
 #  include <nuttx/clock.h>
 #  include <nuttx/i2c.h>
+#ifdef HAVE_RTC_DSXXXX
 #  include <nuttx/timers/ds3231.h>
+#else
+#  include <nuttx/timers/pcf85263.h>
+#endif
 #  include "sam_twihs.h"
 #endif
 
@@ -117,7 +121,7 @@ int sam_bringup(void)
 #if defined(HAVE_S25FL1) || defined(HAVE_PROGMEM_CHARDEV)
   FAR struct mtd_dev_s *mtd;
 #endif
-#ifdef HAVE_RTC_DSXXXX
+#if defined(HAVE_RTC_DSXXXX) || defined(HAVE_RTC_PCF85263)
   FAR struct i2c_dev_s *i2c;
 #endif
 #if defined(HAVE_S25FL1_CHARDEV) || defined(HAVE_PROGMEM_CHARDEV)
@@ -126,7 +130,32 @@ int sam_bringup(void)
 #endif
   int ret;
 
-#ifdef HAVE_RTC_DSXXXX
+#if defined(HAVE_RTC_PCF85263)
+  /* Get an instance of the TWIHS0 I2C interface */
+
+  i2c = up_i2cinitialize(PCF85263_TWI_BUS);
+  if (i2c == NULL)
+    {
+      SYSLOG("ERROR: up_i2cinitialize(%d) failed\n", PCF85263_TWI_BUS);
+    }
+  else
+    {
+      /* Use the I2C interface to initialize the PCF2863 timer */
+
+      ret = pcf85263_rtc_initialize(i2c);
+      if (ret < 0)
+        {
+          SYSLOG("ERROR: pcf85263_rtc_initialize() failed: %d\n", ret);
+        }
+      else
+        {
+          /* Synchronize the system time to the RTC time */
+
+          clock_synchronize();
+        }
+    }
+
+#else /* if defined(HAVE_RTC_DSXXXX) */
   /* Get an instance of the TWIHS0 I2C interface */
 
   i2c = up_i2cinitialize(DSXXXX_TWI_BUS);
@@ -150,7 +179,6 @@ int sam_bringup(void)
           clock_synchronize();
         }
     }
-
 #endif
 
 #ifdef HAVE_MACADDR

configs/samv71-xult/src/samv71-xult.h

@@ -69,6 +69,7 @@
 #define HAVE_WM8904          1
 #define HAVE_AUDIO_NULL      1
 #define HAVE_RTC_DSXXXX      1
+#define HAVE_RTC_PCF85263    1
 
 /* HSMCI */
 /* Can't support MMC/SD if the card interface is not enabled */
@@ -301,16 +302,30 @@
 
 /* DS3231/DS1307 RTC
  *
- * For testing purposes, I have connected a Maximum Integrated I2C RTC TWIHS0
+ * For testing purposes, I have connected Maximum Integrated DS1307 and NXP
- * (available on either EXT or EXT2 pins 11 and 12).
+ * PCF85263 I2C RTC TWIHS0 (available on either EXT or EXT2 pins 11 and 12).
  */
 
-#if !defined(CONFIG_SAMV7_TWIHS0) || !defined(CONFIG_RTC_DSXXXX)
+#ifndef CONFIG_RTC_DSXXXX
 #  undef HAVE_RTC_DSXXXX
 #endif
 
+#ifndef CONFIG_RTC_PCF85263
+#  undef HAVE_RTC_PCF85263
+#endif
+
+#ifndef CONFIG_SAMV7_TWIHS0
+#  undef HAVE_RTC_DSXXXX
+#  undef HAVE_RTC_PCF85263
+#endif
+
 #if !defined(CONFIG_RTC) || !defined(CONFIG_RTC_DATETIME)
 #  undef HAVE_RTC_DSXXXX
+#  undef HAVE_RTC_PCF85263
+#endif
+
+#if defined(HAVE_RTC_DSXXXX) && defined(HAVE_RTC_PCF85263)
+#  undef HAVE_RTC_DSXXXX
 #endif
 
 #ifdef HAVE_RTC_DSXXXX
@@ -320,6 +335,13 @@
 #  define DSXXXX_I2C_ADDRESS   0x68
 #endif
 
+#ifdef HAVE_RTC_PCF85263
+/* The PCF85263 RTC communicates on TWI0, I2C address 0x51 */
+
+#  define PCF85263_TWI_BUS     0
+#  define PCF85263_I2C_ADDRESS 0x51
+#endif
+
 /* SAMV71-XULT GPIO Pin Definitions *************************************************/
 
 /* Ethernet MAC.