Add support for timers to nucleo l476

configs/nucleo-l476rg/include/board.h

@@ -206,12 +206,15 @@
  * Default is to use timer 5 (32-bit) and encoder on PA0/PA1
  */
 
-#define GPIO_TIM5_CH1IN GPIO_TIM5_CH1IN_1
-#define GPIO_TIM5_CH2IN GPIO_TIM5_CH2IN_1
-
 #define GPIO_TIM2_CH1IN GPIO_TIM2_CH1IN_1
 #define GPIO_TIM2_CH2IN GPIO_TIM2_CH2IN_1
 
+#define GPIO_TIM3_CH1IN GPIO_TIM3_CH1IN_3
+#define GPIO_TIM3_CH2IN GPIO_TIM3_CH2IN_3
+
+#define GPIO_TIM5_CH1IN GPIO_TIM5_CH1IN_1
+#define GPIO_TIM5_CH2IN GPIO_TIM5_CH2IN_1
+
 /* PWM output for full bridge, uses config 1, because port E is N/A on QFP64
  * CH1     | 1(A8) 2(E9)
  * CH2     | 1(A9) 2(E11)

configs/nucleo-l476rg/src/Makefile

@@ -70,6 +70,10 @@ ifeq ($(CONFIG_PWM),y)
 CSRCS += stm32_pwm.c
 endif
 
+ifeq ($(CONFIG_TIMER),y)
+CSRCS += stm32_timer.c
+endif
+
 ifeq ($(CONFIG_LIB_BOARDCTL),y)
 CSRCS += stm32_appinit.c
 endif

configs/nucleo-l476rg/src/nucleo-l476rg.h

@@ -351,4 +351,16 @@ int board_adc_initialize(void);
 int board_ajoy_initialize(void);
 #endif
 
+/****************************************************************************
+ * Name: board_timer_driver_initialize
+ *
+ * Description:
+ *   Initialize and register a timer
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_TIMER
+int board_timer_driver_initialize(FAR const char *devpath, int timer);
+#endif
+
 #endif /* __CONFIGS_NUCLEO_L476RG_SRC_NUCLEO_L476RG_H */

configs/nucleo-l476rg/src/stm32_appinit.c

@@ -205,6 +205,19 @@ int board_app_initialize(uintptr_t arg)
     }
 #endif
 
+#ifdef CONFIG_TIMER
+  /* Initialize and register the timer driver */
+
+  ret = board_timer_driver_initialize("/dev/timer0", 2);
+  if (ret != OK)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to register the timer driver: %d\n",
+             ret);
+      return ret;
+    }
+#endif
+
   return OK;
 }
 

configs/nucleo-l476rg/src/stm32_timer.c

+/****************************************************************************
+ * config/nucleo-l476rg/src/stm32_timer.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ *   Copied from nucleo-f303 by Sebastien Lorquet
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/timers/timer.h>
+
+#include <debug.h>
+
+#include "stm32l4_tim.h"
+#include "nucleo-l476rg.h"
+
+#ifdef CONFIG_TIMER
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_timer_driver_initialize
+ *
+ * Description:
+ *   Configure the timer driver.
+ *
+ * Input Parameters:
+ *   devpath - The full path to the timer device.  This should be of the
+ *             form /dev/timer0
+ *   timer   - The timer's number.
+ *
+ * Returned Values:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int board_timer_driver_initialize(FAR const char *devpath, int timer)
+{
+  return stm32l4_timer_initialize(devpath, timer);
+}
+
+#endif