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/****************************************************************************
* configs/spark/src/up_io.c
*
* Copyright (C) 2011-2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <stdint.h>
#include <arch/board/board.h>
#include "chip/stm32_tim.h"
#include "spark.h"
#ifndef CONFIG_CC3000_PROBES
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_leds
*
* Description:
*
****************************************************************************/
void up_leds(int r, int g ,int b, int freqs)
{
long fosc = 72000000;
long prescale = 2048;
long p1s = fosc/prescale;
long p0p5s = p1s/2;
long p;
static struct stm32_tim_dev_s *tim1 = 0;
if (tim1 == 0)
{
tim1 = stm32_tim_init(1);
STM32_TIM_SETMODE(tim1, STM32_TIM_MODE_UP);
STM32_TIM_SETCLOCK(tim1, p1s-8);
STM32_TIM_SETPERIOD(tim1, p1s);
STM32_TIM_SETCOMPARE(tim1, 1, 0);
STM32_TIM_SETCOMPARE(tim1, 2, 0);
STM32_TIM_SETCOMPARE(tim1, 3, 0);
STM32_TIM_SETCHANNEL(tim1, 1, STM32_TIM_CH_OUTPWM | STM32_TIM_CH_POLARITY_NEG);
STM32_TIM_SETCHANNEL(tim1, 2, STM32_TIM_CH_OUTPWM | STM32_TIM_CH_POLARITY_NEG);
STM32_TIM_SETCHANNEL(tim1, 3, STM32_TIM_CH_OUTPWM | STM32_TIM_CH_POLARITY_NEG);
}
p = freqs == 0 ? p1s : p1s / freqs;
STM32_TIM_SETPERIOD(tim1, p);
p = freqs == 0 ? p1s + 1 : p0p5s / freqs;
STM32_TIM_SETCOMPARE(tim1, 2, (r * p) / 255);
STM32_TIM_SETCOMPARE(tim1, 1, (b * p) / 255);
STM32_TIM_SETCOMPARE(tim1, 3, (g * p) / 255);
}
/****************************************************************************
* Name: up_ioinit
*
* Description:
*
****************************************************************************/
void up_ioinit(void)
{
/* Configure the GPIO pins as inputs. NOTE that EXTI interrupts are
* configured for all pins.
*/
up_leds(0,0,0,0);
stm32_configgpio(GPIO_A0); /* Probes */
stm32_configgpio(GPIO_A1); /* Probes */
stm32_configgpio(GPIO_A2); /* Smart Config */
stm32_configgpio(GPIO_A3); /* not used */
stm32_configgpio(GPIO_D0); /* Sw 1 */
stm32_configgpio(GPIO_D1); /* Sw 2 */
stm32_configgpio(GPIO_D2); /* Activate */
}
/****************************************************************************
* Name: up_read_inputs
*
* N.B The return state in true logic, the button polarity is dealt here in
*
****************************************************************************/
uint8_t up_read_inputs(void)
{
uint8_t bits = 0;
bits |= stm32_gpioread(GPIO_D0) == 0 ? 1 : 0;
bits |= stm32_gpioread(GPIO_D1) == 0 ? 2 : 0;
bits |= stm32_gpioread(GPIO_A2) == 0 ? 4 : 0;
bits |= stm32_gpioread(GPIO_A3) == 0 ? 8 : 0;
return bits;
}
/****************************************************************************
* Name: up_write_outputs
*
* N.B The return state in true logic, the button polarity is dealt here in
*
****************************************************************************/
void up_write_outputs(int id, bool bits)
{
if (id == 2)
{
stm32_gpiowrite(GPIO_D2, bits);
}
else if (id == 0)
{
stm32_gpiowrite(GPIO_A0, bits);
}
else if (id == 1)
{
stm32_gpiowrite(GPIO_A1, bits);
}
}
/****************************************************************************
* Name: up_irqio
*
* Description:
*
****************************************************************************/
xcpt_t up_irqio(int id, xcpt_t irqhandler)
{
xcpt_t oldhandler = NULL;
/* The following should be atomic */
if (id == 0)
{
oldhandler = stm32_gpiosetevent(GPIO_D0, true, true, true, irqhandler);
}
else if (id == 1)
{
oldhandler = stm32_gpiosetevent(GPIO_D1, true, true, true, irqhandler);
}
return oldhandler;
}
#endif /* CONFIG_CC3000_PROBES */
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