Add support for STM3210E-EVAL button interrupts
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3750 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
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4014cbef3c
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@ -35,10 +35,9 @@
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*
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****************************************************************************/
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/** \file
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* \author Gregory Nutt <spudmonkey@racsa.co.cr>
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* \brief STM32 GPIO
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**/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/irq.h>
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@ -56,7 +55,6 @@
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#include "stm32_rcc.h"
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#include "stm32_internal.h"
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/****************************************************************************
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* Private Data
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****************************************************************************/
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@ -87,16 +85,17 @@ static const uint32_t g_gpiobase[STM32_NGPIO_PORTS] =
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};
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#ifdef CONFIG_DEBUG
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static const char g_portchar[8] = {
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'
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static const char g_portchar[8] =
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{
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'
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};
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#endif
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static void (*stm32_exti_callbacks[7])(void) = {
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NULL, NULL, NULL, NULL, NULL, NULL, NULL
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static xcpt_t stm32_exti_callbacks[7] =
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{
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NULL, NULL, NULL, NULL, NULL, NULL, NULL
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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@ -263,59 +262,87 @@ int stm32_gpio_configlock(uint32_t cfgset, bool altlock)
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int stm32_exti0_isr(int irq, void *context)
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{
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putreg32(0x0001, STM32_EXTI_PR);
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if (stm32_exti_callbacks[0]) stm32_exti_callbacks[0]();
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return 0;
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}
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int ret = OK;
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putreg32(0x0001, STM32_EXTI_PR);
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if (stm32_exti_callbacks[0])
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{
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ret = stm32_exti_callbacks[0](irq, context);
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}
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return ret;
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}
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int stm32_exti1_isr(int irq, void *context)
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{
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putreg32(0x0002, STM32_EXTI_PR);
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if (stm32_exti_callbacks[1]) stm32_exti_callbacks[1]();
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return 0;
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}
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int ret = OK;
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putreg32(0x0002, STM32_EXTI_PR);
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if (stm32_exti_callbacks[1])
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{
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ret = stm32_exti_callbacks[1](irq, context);
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}
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return ret;
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}
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int stm32_exti2_isr(int irq, void *context)
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{
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putreg32(0x0004, STM32_EXTI_PR);
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if (stm32_exti_callbacks[2]) stm32_exti_callbacks[2]();
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return 0;
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}
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int ret = OK;
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putreg32(0x0004, STM32_EXTI_PR);
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if (stm32_exti_callbacks[2])
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{
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ret = stm32_exti_callbacks[2](irq, context);
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}
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return ret;
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}
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int stm32_exti3_isr(int irq, void *context)
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{
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putreg32(0x0008, STM32_EXTI_PR);
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if (stm32_exti_callbacks[3]) stm32_exti_callbacks[3]();
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return 0;
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}
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int ret = OK;
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putreg32(0x0008, STM32_EXTI_PR);
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if (stm32_exti_callbacks[3])
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{
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ret = stm32_exti_callbacks[3](irq, context);
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}
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return ret;
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}
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int stm32_exti4_isr(int irq, void *context)
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{
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putreg32(0x0010, STM32_EXTI_PR);
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if (stm32_exti_callbacks[4]) stm32_exti_callbacks[4]();
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return 0;
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}
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int ret = OK;
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putreg32(0x0010, STM32_EXTI_PR);
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if (stm32_exti_callbacks[4])
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{
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ret = stm32_exti_callbacks[4](irq, context);
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}
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return ret;
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}
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int stm32_exti95_isr(int irq, void *context)
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{
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putreg32(0x03E0, STM32_EXTI_PR); /* ACK all pins, since we support just one */
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if (stm32_exti_callbacks[5]) stm32_exti_callbacks[5]();
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return 0;
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}
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int ret = OK;
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putreg32(0x03E0, STM32_EXTI_PR); /* ACK all pins, since we support just one */
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if (stm32_exti_callbacks[5])
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{
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ret = stm32_exti_callbacks[5](irq, context);
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}
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return ret;
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}
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int stm32_exti1510_isr(int irq, void *context)
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{
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putreg32(0xFC00, STM32_EXTI_PR); /* ACK all pins, since we support just one */
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if (stm32_exti_callbacks[6]) stm32_exti_callbacks[6]();
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return 0;
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}
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int ret = OK;
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putreg32(0xFC00, STM32_EXTI_PR); /* ACK all pins, since we support just one */
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if (stm32_exti_callbacks[6])
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{
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ret = stm32_exti_callbacks[6](irq, context);
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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@ -546,16 +573,20 @@ bool stm32_gpioread(uint32_t pinset)
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* - func: when non-NULL, generate interrupt
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*
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* Returns:
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* True when GPIO Event/Interrupt generation is successfully configured.
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* The previous value of the interrupt handler function pointer. This value may,
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* for example, be used to restore the previous handler when multiple handlers are
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* used.
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*
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************************************************************************************/
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bool stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
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bool event, void (*func)(void))
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xcpt_t stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
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bool event, xcpt_t func)
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{
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uint32_t exti_isr = pinset & GPIO_PIN_MASK;
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uint32_t exti_bit = STM32_EXTI_BIT( exti_isr );
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int intno;
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int (*exti_hnd)(int irq, void *context);
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xcpt_t oldhandler = NULL;
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/* Set callback, single callback at the moment, but we could extend
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* that easily
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@ -582,12 +613,9 @@ bool stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
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intno = STM32_IRQ_EXTI1510;
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}
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/* Check if previous and different instance exists? */
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if (func && stm32_exti_callbacks[exti_isr] &&
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func != stm32_exti_callbacks[exti_isr])
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return false;
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/* Get the previous GPIO IRQ handler; Save the new IRQ handler. */
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oldhandler = stm32_exti_callbacks[exti_isr];
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stm32_exti_callbacks[exti_isr] = func;
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/* Install external interrupt handlers */
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@ -614,8 +642,10 @@ bool stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
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modifyreg32(STM32_EXTI_EMR, event ? 0 : exti_bit, event ? exti_bit : 0);
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modifyreg32(STM32_EXTI_IMR, func ? 0 : exti_bit, func ? exti_bit : 0);
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return true;
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/* Return the old IRQ handler */
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return oldhandler;
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}
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/****************************************************************************
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@ -38,12 +38,16 @@
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#ifndef __ARCH_ARM_SRC_STM32_STM32_GPIO_H
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#define __ARCH_ARM_SRC_STM32_STM32_GPIO_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/irq.h>
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#include "chip.h"
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#include "chip/stm32_gpio.h"
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/************************************************************************************
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* Pre-Processor Declarations
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************************************************************************************/
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@ -58,9 +62,9 @@ extern "C" {
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#define EXTERN extern
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#endif
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/* Bit-encoded input to stm32_configgpio()
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* These definitions could be replaced by 'enum' as a stm32_gpio_t data type.
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*/
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/* Bit-encoded input to stm32_configgpio()
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* These definitions could be replaced by 'enum' as a stm32_gpio_t data type.
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*/
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/* 16-bit Encoding:
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* OFFS SX.. VPPP BBBB
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@ -157,7 +161,6 @@ extern "C" {
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#define GPIO_PIN14 (14 << GPIO_PIN_SHIFT)
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#define GPIO_PIN15 (15 << GPIO_PIN_SHIFT)
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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@ -175,7 +178,6 @@ extern "C" {
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* OK on success
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* ERROR on invalid port, or when pin is locked as ALT function.
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*
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* \todo Auto Power Enable
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************************************************************************************/
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EXTERN int stm32_configgpio(uint32_t cfgset);
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@ -197,7 +199,6 @@ EXTERN int stm32_configgpio(uint32_t cfgset);
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* OK on success
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* ERROR on invalid port
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*
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* \todo Auto Power Disable
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************************************************************************************/
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EXTERN int stm32_unconfiggpio(uint32_t cfgset);
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@ -238,11 +239,14 @@ EXTERN bool stm32_gpioread(uint32_t pinset);
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* - func: when non-NULL, generate interrupt
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*
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* Returns:
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* True when GPIO Event/Interrupt generation is successfully configured.
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* The previous value of the interrupt handler function pointer. This value may,
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* for example, be used to restore the previous handler when multiple handlers are
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* used.
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*
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************************************************************************************/
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EXTERN bool stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
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bool event, void (*func)(void));
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EXTERN xcpt_t stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
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bool event, xcpt_t func);
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/************************************************************************************
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* Function: stm32_dumpgpio
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@ -258,7 +262,6 @@ EXTERN int stm32_dumpgpio(uint32_t pinset, const char *msg);
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# define stm32_dumpgpio(p,m)
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#endif
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/************************************************************************************
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* Function: stm32_gpioinit
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*
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