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nrf5/hal/gpio: Adding initial gpiote implementation to handle IRQ on polarity change on a gpio.

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Glenn Ruben Bakke 2017-04-11 13:57:44 +02:00
parent fb53bdf07c
commit 81aaf6e906
1 changed files with 117 additions and 0 deletions
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nrf5/hal/hal_gpio.c Normal file
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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Glenn Ruben Bakke
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hal_gpio.h"
#include "mphalport.h"
#include "hal_irq.h"
#define GPIOTE_IRQ_NUM GPIOTE_IRQn
#define GPIOTE_BASE ((NRF_GPIOTE_Type *)NRF_GPIOTE_BASE)
#define HAL_GPIOTE_Type NRF_GPIOTE_Type
static hal_gpio_event_callback_t m_callback;
void hal_gpio_register_callback(hal_gpio_event_callback_t cb) {
m_callback = cb;
#if 0
hal_gpio_event_config_t config;
config.channel = HAL_GPIO_EVENT_CHANNEL_0;
config.event = HAL_GPIO_POLARITY_EVENT_HIGH_TO_LOW;
config.init_level = 1;
config.pin = 13;
config.port = 0;
// start LFCLK if not already started
if (NRF_CLOCK->LFCLKSTAT == 0) {
NRF_CLOCK->TASKS_LFCLKSTART = 1;
while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0);
NRF_CLOCK->EVENTS_LFCLKSTARTED = 0;
}
hal_irq_enable(GPIOTE_IRQ_NUM);
hal_irq_priority(GPIOTE_IRQ_NUM, 3);
hal_gpio_event_config(&config);
#endif
}
void hal_gpio_event_config(hal_gpio_event_config_t const * p_config) {
#if 0
hal_gpio_cfg_pin(p_config->port, p_config->pin, HAL_GPIO_MODE_INPUT, HAL_GPIO_PULL_UP);
uint8_t channel = (uint8_t)p_config->channel;
GPIOTE_BASE->CONFIG[channel] = \
GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos \
| p_config->pin << GPIOTE_CONFIG_PSEL_Pos \
| p_config->event \
| p_config->init_level << GPIOTE_CONFIG_OUTINIT_Pos;
GPIOTE_BASE->INTENSET = 1 << channel;
GPIOTE_BASE->EVENTS_IN[channel] = 0;
#endif
}
#if 0
void GPIOTE_IRQHandler(void) {
if (GPIOTE_BASE->EVENTS_IN[0]) {
GPIOTE_BASE->EVENTS_IN[0] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_0);
}
if (GPIOTE_BASE->EVENTS_IN[1]) {
GPIOTE_BASE->EVENTS_IN[1] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_1);
}
if (GPIOTE_BASE->EVENTS_IN[2]) {
GPIOTE_BASE->EVENTS_IN[2] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_2);
}
if (GPIOTE_BASE->EVENTS_IN[3]) {
GPIOTE_BASE->EVENTS_IN[3] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_3);
}
#if NRF52
if (GPIOTE_BASE->EVENTS_IN[4]) {
GPIOTE_BASE->EVENTS_IN[4] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_4);
}
if (GPIOTE_BASE->EVENTS_IN[5]) {
GPIOTE_BASE->EVENTS_IN[5] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_5);
}
if (GPIOTE_BASE->EVENTS_IN[6]) {
GPIOTE_BASE->EVENTS_IN[6] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_6);
}
if (GPIOTE_BASE->EVENTS_IN[7]) {
GPIOTE_BASE->EVENTS_IN[7] = 0;
m_callback(HAL_GPIO_EVENT_CHANNEL_7);
}
#endif
}
#endif // if 0