From 7df66c5654e9a85476436ce20987d7df7e83c85e Mon Sep 17 00:00:00 2001 From: kfazz Date: Fri, 10 Jun 2016 01:11:44 -0400 Subject: [PATCH] register each enabled timer --- configs/teensy-3.x/src/Makefile | 6 +- configs/teensy-3.x/src/k20_pwm.c | 160 +++++++++++++++++++++++++++++++ 2 files changed, 165 insertions(+), 1 deletion(-) create mode 100644 configs/teensy-3.x/src/k20_pwm.c diff --git a/configs/teensy-3.x/src/Makefile b/configs/teensy-3.x/src/Makefile index ff73a6953a..87734c76c0 100644 --- a/configs/teensy-3.x/src/Makefile +++ b/configs/teensy-3.x/src/Makefile @@ -1,7 +1,7 @@ ############################################################################ # configs/teensy-3.x/src/Makefile # -# Copyright (C) 2015 Gregory Nutt. All rights reserved. +# Copyright (C) 2015,2016 Gregory Nutt. All rights reserved. # Author: Gregory Nutt # # Redistribution and use in source and binary forms, with or without @@ -51,4 +51,8 @@ ifeq ($(CONFIG_LIB_BOARDCTL),y) CSRCS += k20_appinit.c endif +ifeq ($(CONFIG_PWM),y) +CSRCS += k20_pwm.c +endif + include $(TOPDIR)/configs/Board.mk diff --git a/configs/teensy-3.x/src/k20_pwm.c b/configs/teensy-3.x/src/k20_pwm.c new file mode 100644 index 0000000000..94af831308 --- /dev/null +++ b/configs/teensy-3.x/src/k20_pwm.c @@ -0,0 +1,160 @@ +/************************************************************************************ + * configs/teensy-3.x/src/k20_pwm.c + * + * Copyright (C) 2015,2016 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * Alan Carvalho de Assis + * + * 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 + +#include +#include +#include + +#include +#include + +#include + +#include "chip.h" +#include "up_arch.h" +#include "kinetis_pwm.h" + +/************************************************************************************ + * Pre-processor Definitions + ************************************************************************************/ +/* Configuration *******************************************************************/ +/* PWM + * + * The Kinetis Freedom board provides a LED on GPIO. + */ + +#ifdef CONFIG_PWM + +extern struct pwm_lowerhalf_s *kinetis_pwminitialize(int timer); + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: board_pwm_setup + * + * Description: + * All Kinetis K20 architectures must provide the following interface to work with + * examples/pwm. + * + ************************************************************************************/ + +int board_pwm_setup(void) +{ + static bool initialized = false; + struct pwm_lowerhalf_s *pwm; + int ret; + + /* Have we already initialized? */ + + if (!initialized) + { + /* Call kinetis_pwminitialize() to get an instance of the PWM interface */ +#ifdef CONFIG_KINETIS_FTM0_PWM + pwm = kinetis_pwminitialize(0); + if (!pwm) + { + adbg("Failed to get the KL20 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 */ +#endif +#ifdef CONFIG_KINETIS_FTM1_PWM + pwm = kinetis_pwminitialize(1); + if (!pwm) + { + adbg("Failed to get the KL20 PWM lower half\n"); + return -ENODEV; + } + + /* Register the PWM driver at "/dev/pwm1" */ + + ret = pwm_register("/dev/pwm1", pwm); + if (ret < 0) + { + adbg("pwm_register failed: %d\n", ret); + return ret; + } + + /* Now we are initialized */ +#endif +#ifdef CONFIG_KINETIS_FTM2_PWM + pwm = kinetis_pwminitialize(2); + if (!pwm) + { + adbg("Failed to get the KL20 PWM lower half\n"); + return -ENODEV; + } + + /* Register the PWM driver at "/dev/pwm2" */ + + ret = pwm_register("/dev/pwm2", pwm); + if (ret < 0) + { + adbg("pwm_register failed: %d\n", ret); + return ret; + } + + /* Now we are initialized */ +#endif + initialized = true; + } + + return OK; +} + +#endif /* CONFIG_PWM */