Freedom KL25Z: Add PWM support. From Alan Carvalho de Assis

ChangeLog

@@ -6015,3 +6015,5 @@
 	  driver application. (2013-11-10).
 	* arch/arm/src/kl/kl_pwm.c and .h:  PWM driver for the Freescale
 	  Kinetis KL family from Alan Carvalho de Assis (2013-11-10).
+	* configs/freedom-kl25z:  Add PWM support.  From Alan Carvalho de Assis
+	  (2013-11-10).

configs/freedom-kl25z/include/board.h

@@ -133,6 +133,26 @@
 #  define BOARD_SDHC_SD4MODE_DIVISOR   SDHC_SYSCTL_DVS_DIV(15)
 #endif
 
+/* PWM Configuration */
+/* TPM0 Channels */
+
+#define GPIO_TPM0_CH0OUT PIN_TPM0_CH0_3 //PIN_TPM0_CH0_1
+#define GPIO_TPM0_CH1OUT PIN_TPM0_CH1_1
+#define GPIO_TPM0_CH2OUT PIN_TPM0_CH2_1
+#define GPIO_TPM0_CH3OUT PIN_TPM0_CH3_1
+#define GPIO_TPM0_CH4OUT PIN_TPM0_CH4_1
+#define GPIO_TPM0_CH5OUT PIN_TPM0_CH5_1
+
+/* TPM1 Channels */
+
+#define GPIO_TPM1_CH0OUT PIN_TPM1_CH0_1
+#define GPIO_TPM1_CH1OUT PIN_TPM1_CH1_1
+
+/* TPM2 Channels */
+
+#define GPIO_TPM1_CH0OUT PIN_TPM2_CH0_1
+#define GPIO_TPM1_CH1OUT PIN_TPM2_CH1_1
+
 /* LED definitions ******************************************************************/
 /* The Freedom KL25Z has a single RGB LED driven by the KL25Z as follows:
  *

configs/freedom-kl25z/nsh/defconfig

@@ -39,6 +39,7 @@ CONFIG_RAW_BINARY=y
 # Debug Options
 #
 # CONFIG_DEBUG is not set
+CONFIG_ARCH_HAVE_STACKCHECK=y
 # CONFIG_DEBUG_SYMBOLS is not set
 
 #
@@ -95,10 +96,10 @@ CONFIG_ARCH_HAVE_CMNVECTOR=y
 #
 # ARMV6M Configuration Options
 #
-CONFIG_ARMV6M_TOOLCHAIN_BUILDROOT=y
+# CONFIG_ARMV6M_TOOLCHAIN_BUILDROOT is not set
 # CONFIG_ARMV6M_TOOLCHAIN_CODEREDL is not set
 # CONFIG_ARMV6M_TOOLCHAIN_CODESOURCERYL is not set
-# CONFIG_ARMV6M_TOOLCHAIN_GNU_EABIL is not set
+CONFIG_ARMV6M_TOOLCHAIN_GNU_EABIL=y
 # CONFIG_GPIO_IRQ is not set
 
 #
@@ -129,7 +130,9 @@ CONFIG_KL_UART0=y
 # CONFIG_KL_ADC1 is not set
 # CONFIG_KL_CMP is not set
 # CONFIG_KL_VREF is not set
-# CONFIG_KL_TPM0 is not set
+CONFIG_KL_TPM0=y
+CONFIG_KL_TPM0_PWM=y
+CONFIG_KL_TPM0_CHANNEL=0
 # CONFIG_KL_TPM1 is not set
 # CONFIG_KL_TPM2 is not set
 # CONFIG_KL_LPTIMER is not set
@@ -280,7 +283,8 @@ CONFIG_DEV_NULL=y
 # CONFIG_LOOP is not set
 # CONFIG_RAMDISK is not set
 # CONFIG_CAN is not set
-# CONFIG_PWM is not set
+CONFIG_PWM=y
+# CONFIG_PWM_PULSECOUNT is not set
 # CONFIG_I2C is not set
 # CONFIG_SPI is not set
 # CONFIG_RTC is not set
@@ -440,8 +444,6 @@ CONFIG_BUILTIN_PROXY_STACKSIZE=1024
 #
 # CONFIG_EXAMPLES_BUTTONS is not set
 # CONFIG_EXAMPLES_CAN is not set
-# CONFIG_EXAMPLES_CC3000BASIC is not set
-# CONFIG_SYSTEM_COMPOSITE is not set
 # CONFIG_EXAMPLES_DHCPD is not set
 # CONFIG_EXAMPLES_ELF is not set
 # CONFIG_EXAMPLES_FTPC is not set
@@ -470,6 +472,11 @@ CONFIG_EXAMPLES_NSH=y
 # CONFIG_EXAMPLES_OSTEST is not set
 # CONFIG_EXAMPLES_PASHELLO is not set
 # CONFIG_EXAMPLES_PIPE is not set
+CONFIG_EXAMPLES_PWM=y
+CONFIG_EXAMPLES_PWM_DEVPATH="/dev/pwm0"
+CONFIG_EXAMPLES_PWM_FREQUENCY=100
+CONFIG_EXAMPLES_PWM_DUTYPCT=50
+CONFIG_EXAMPLES_PWM_DURATION=5
 # CONFIG_EXAMPLES_POSIXSPAWN is not set
 # CONFIG_EXAMPLES_QENCODER is not set
 # CONFIG_EXAMPLES_RGMP is not set
@@ -487,7 +494,6 @@ CONFIG_EXAMPLES_NSH=y
 # CONFIG_EXAMPLES_UDP is not set
 # CONFIG_EXAMPLES_UIP is not set
 # CONFIG_EXAMPLES_USBSERIAL is not set
-# CONFIG_SYSTEM_USBMSC is not set
 # CONFIG_EXAMPLES_USBTERM is not set
 # CONFIG_EXAMPLES_WATCHDOG is not set
 
@@ -537,11 +543,13 @@ CONFIG_NSH_BUILTIN_APPS=y
 #
 # Disable Individual commands
 #
+# CONFIG_NSH_DISABLE_ADDROUTE is not set
 # CONFIG_NSH_DISABLE_CAT is not set
 CONFIG_NSH_DISABLE_CD=y
 CONFIG_NSH_DISABLE_CP=y
 # CONFIG_NSH_DISABLE_CMP is not set
 CONFIG_NSH_DISABLE_DD=y
+# CONFIG_NSH_DISABLE_DELROUTE is not set
 # CONFIG_NSH_DISABLE_ECHO is not set
 # CONFIG_NSH_DISABLE_EXEC is not set
 # CONFIG_NSH_DISABLE_EXIT is not set
@@ -605,6 +613,14 @@ CONFIG_NSH_CONSOLE=y
 # System NSH Add-Ons
 #
 
+#
+# USB CDC/ACM Device Commands
+#
+
+#
+# USB Composite Device Commands
+#
+
 #
 # Custom Free Memory Command
 #
@@ -658,6 +674,14 @@ CONFIG_READLINE_ECHO=y
 # USB Monitor
 #
 
+#
+# Stack Monitor
+#
+
+#
+# USB Mass Storage Device Commands
+#
+
 #
 # Zmodem Commands
 #

configs/freedom-kl25z/src/Makefile

@@ -67,7 +67,7 @@ CSRCS += kl_usb.c
 endif
 
 ifeq ($(CONFIG_PWM),y)
-CSRCS += kl_pwm.c
+CSRCS += up_pwm.c
 endif
 
 ifeq ($(CONFIG_QENCODER),y)

configs/freedom-kl25z/src/up_pwm.c

@@ -0,0 +1,120 @@
+/************************************************************************************
+ * configs/freedom-kl25z/src/up_pwm.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *           Alan Carvalho de Assis <acassis@gmail.com>
+ *
+ * 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 <errno.h>
+#include <debug.h>
+
+#include <nuttx/pwm.h>
+#include <sys/types.h>
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "kl_pwm.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* PWM
+ *
+ * The Kinetis Freedom board provides a LED on GPIO.
+ */
+
+#ifdef CONFIG_PWM
+
+extern struct pwm_lowerhalf_s *kl_pwminitialize(int timer);
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pwm_devinit
+ *
+ * Description:
+ *   All Kinetis KL architectures must provide the following interface to work with
+ *   examples/pwm.
+ *
+ ************************************************************************************/
+
+int pwm_devinit(void)
+{
+  static bool initialized = false;
+  struct pwm_lowerhalf_s *pwm;
+  int ret;
+
+  /* Have we already initialized? */
+
+  if (!initialized)
+    {
+      /* Call kl_pwminitialize() to get an instance of the PWM interface */
+
+      pwm = kl_pwminitialize(0);
+      if (!pwm)
+        {
+          adbg("Failed to get the KL25 PWM lower half\n");
+          return -ENODEV;
+        }
+
+      /* Register the PWM driver at "/dev/pwm0" */
+
+      ret = pwm_register("/dev/pwm0", pwm);
+      if (ret < 0)
+        {
+          adbg("pwm_register failed: %d\n", ret);
+          return ret;
+        }
+
+      /* Now we are initialized */
+
+      initialized = true;
+    }
+
+  return OK;
+}
+
+#endif /* CONFIG_PWM */