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nuttx/boards/arm/nrf52/thingy52/src/nrf52_sx1509.c
raiden00pl 0aa1af7ff1 boards/thingy52: add sx1509 support 
SX1509 is used to control various peripherals and RGB LEDs available on the board.
2023-06-27 14:44:00 -03:00

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/****************************************************************************
* boards/arm/nrf52/thingy52/src/nrf52_sx1509.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/irq.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/ioexpander/sx1509.h>
#include <nuttx/ioexpander/ioexpander.h>
#include <nuttx/ioexpander/gpio.h>
#include "nrf52_i2c.h"
#include "thingy52.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define SX1509_I2C_BUS (0)
#define SX1509_I2C_ADDR (0x3e)
#define SX1509_I2C_FREQ (400000)
/* LEDs */
#define BOARD_LEDW_R 0
#define BOARD_LEDW_G 1
#define BOARD_LEDW_B 2
#define BOARD_LEDS_R 3
#define BOARD_LEDS_G 4
#define BOARD_LEDS_B 5
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static void nrf52_sx1509_set_nreset(bool state);
#ifdef CONFIG_IOEXPANDER_INT_ENABLE
static int nrf52_sx1509_attach(struct sx1509_config_s *state, xcpt_t isr,
void *arg);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
struct sx1509_config_s g_sx1509_cfg =
{
.address = SX1509_I2C_ADDR,
.frequency = SX1509_I2C_FREQ,
.set_nreset = nrf52_sx1509_set_nreset,
#ifdef CONFIG_IOEXPANDER_INT_ENABLE
.attach = nrf52_sx1509_attach,
#endif
#ifdef CONFIG_SX1509_LED_ENABLE
.led_pre = 2,
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nrf52_sx1509_set_nreset
****************************************************************************/
static void nrf52_sx1509_set_nreset(bool state)
{
nrf52_gpio_write(GPIO_SX1509_RESET, state);
}
#ifdef CONFIG_IOEXPANDER_INT_ENABLE
/****************************************************************************
* Name: nrf52_sx1509_attach
****************************************************************************/
static int nrf52_sx1509_attach(struct sx1509_config_s *state, xcpt_t isr,
void *arg)
{
# error INT pin not supported
}
#endif
/****************************************************************************
* Name: nrf52_sx1509_pinscfg
****************************************************************************/
static void nrf52_sx1509_pinscfg(struct ioexpander_dev_s *ioe)
{
/* Pin 0: IOEXT0 */
IOEXP_SETDIRECTION(ioe, 0, IOEXPANDER_DIRECTION_IN);
IOEXP_SETOPTION(ioe, 0, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_SETOPTION(ioe, 0, IOEXPANDER_OPTION_INTCFG,
(void *)IOEXPANDER_VAL_DISABLE);
IOEXP_WRITEPIN(ioe, 0, false);
gpio_lower_half(ioe, 0, GPIO_INPUT_PIN, 0);
/* Pin 1: IOEXT1 */
IOEXP_SETDIRECTION(ioe, 1, IOEXPANDER_DIRECTION_IN);
IOEXP_SETOPTION(ioe, 1, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_SETOPTION(ioe, 1, IOEXPANDER_OPTION_INTCFG,
(void *)IOEXPANDER_VAL_DISABLE);
IOEXP_WRITEPIN(ioe, 1, false);
gpio_lower_half(ioe, 1, GPIO_INPUT_PIN, 1);
/* Pin 2: IOEXT2 */
IOEXP_SETDIRECTION(ioe, 2, IOEXPANDER_DIRECTION_IN);
IOEXP_SETOPTION(ioe, 2, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_SETOPTION(ioe, 2, IOEXPANDER_OPTION_INTCFG,
(void *)IOEXPANDER_VAL_DISABLE);
IOEXP_WRITEPIN(ioe, 2, false);
gpio_lower_half(ioe, 2, GPIO_INPUT_PIN, 2);
/* Pin 3: IOEXT3 */
IOEXP_SETDIRECTION(ioe, 3, IOEXPANDER_DIRECTION_IN);
IOEXP_SETOPTION(ioe, 3, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_SETOPTION(ioe, 3, IOEXPANDER_OPTION_INTCFG,
(void *)IOEXPANDER_VAL_DISABLE);
IOEXP_WRITEPIN(ioe, 3, false);
gpio_lower_half(ioe, 3, GPIO_INPUT_PIN, 3);
/* Pin 4: BAT_MON_EN */
IOEXP_SETDIRECTION(ioe, 4, IOEXPANDER_DIRECTION_OUT);
IOEXP_SETOPTION(ioe, 4, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_WRITEPIN(ioe, 4, false);
gpio_lower_half(ioe, 4, GPIO_OUTPUT_PIN, 4);
#ifdef CONFIG_SX1509_LED_ENABLE
/* Pin 5: LIGHTWELL_G */
IOEXP_SETDIRECTION(ioe, 5, IOEXPANDER_DIRECTION_OUT_LED);
IOEXP_SETOPTION(ioe, 5, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_INVERT);
IOEXP_SETOPTION(ioe, 5, IOEXPANDER_OPTION_LEDCFG,
(void *)BOARD_LEDW_G);
IOEXP_WRITEPIN(ioe, 5, false);
/* Pin 6: LIGHTWELL_B */
IOEXP_SETDIRECTION(ioe, 6, IOEXPANDER_DIRECTION_OUT_LED);
IOEXP_SETOPTION(ioe, 6, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_INVERT);
IOEXP_SETOPTION(ioe, 6, IOEXPANDER_OPTION_LEDCFG,
(void *)BOARD_LEDW_B);
IOEXP_WRITEPIN(ioe, 6, false);
/* Pin 7: LIGHTWELL_R */
IOEXP_SETDIRECTION(ioe, 7, IOEXPANDER_DIRECTION_OUT_LED);
IOEXP_SETOPTION(ioe, 7, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_INVERT);
IOEXP_SETOPTION(ioe, 7, IOEXPANDER_OPTION_LEDCFG,
(void *)BOARD_LEDW_R);
IOEXP_WRITEPIN(ioe, 7, false);
#endif
/* Pin 8: MPU_PWR_CTRL */
IOEXP_SETDIRECTION(ioe, 8, IOEXPANDER_DIRECTION_OUT);
IOEXP_SETOPTION(ioe, 8, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_WRITEPIN(ioe, 8, false);
gpio_lower_half(ioe, 8, GPIO_OUTPUT_PIN, 8);
/* Pin 9: MIC_PWR_CTRL */
IOEXP_SETDIRECTION(ioe, 9, IOEXPANDER_DIRECTION_OUT);
IOEXP_SETOPTION(ioe, 9, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_WRITEPIN(ioe, 9, false);
gpio_lower_half(ioe, 9, GPIO_OUTPUT_PIN, 9);
/* Pin 10: CSS_PWR_CTRL */
IOEXP_SETDIRECTION(ioe, 10, IOEXPANDER_DIRECTION_OUT);
IOEXP_SETOPTION(ioe, 10, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_WRITEPIN(ioe, 10, false);
gpio_lower_half(ioe, 10, GPIO_OUTPUT_PIN, 10);
/* Pin 11: CSS_RESET */
IOEXP_SETDIRECTION(ioe, 11, IOEXPANDER_DIRECTION_OUT);
IOEXP_SETOPTION(ioe, 11, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_WRITEPIN(ioe, 11, false);
gpio_lower_half(ioe, 11, GPIO_OUTPUT_PIN, 11);
/* Pin 12: CSS_WAKE */
IOEXP_SETDIRECTION(ioe, 12, IOEXPANDER_DIRECTION_OUT);
IOEXP_SETOPTION(ioe, 12, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_NORMAL);
IOEXP_WRITEPIN(ioe, 12, false);
gpio_lower_half(ioe, 12, GPIO_OUTPUT_PIN, 12);
#ifdef CONFIG_SX1509_LED_ENABLE
/* Pin 13: SENSE_LED_R */
IOEXP_SETDIRECTION(ioe, 13, IOEXPANDER_DIRECTION_OUT_LED);
IOEXP_SETOPTION(ioe, 13, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_INVERT);
IOEXP_SETOPTION(ioe, 13, IOEXPANDER_OPTION_LEDCFG,
(void *)BOARD_LEDS_R);
IOEXP_WRITEPIN(ioe, 13, false);
/* Pin 14: SENSE_LED_G */
IOEXP_SETDIRECTION(ioe, 14, IOEXPANDER_DIRECTION_OUT_LED);
IOEXP_SETOPTION(ioe, 14, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_INVERT);
IOEXP_SETOPTION(ioe, 14, IOEXPANDER_OPTION_LEDCFG,
(void *)BOARD_LEDS_G);
IOEXP_WRITEPIN(ioe, 14, false);
/* Pin 15: SENSE_LED_B */
IOEXP_SETDIRECTION(ioe, 15, IOEXPANDER_DIRECTION_OUT_LED);
IOEXP_SETOPTION(ioe, 15, IOEXPANDER_OPTION_INVERT,
(void *)IOEXPANDER_VAL_INVERT);
IOEXP_SETOPTION(ioe, 15, IOEXPANDER_OPTION_LEDCFG,
(void *)BOARD_LEDS_B);
IOEXP_WRITEPIN(ioe, 15, false);
#endif
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nrf52_sx1509_initialize
*
* Description:
* Configure the SX1509 io expander.
*
****************************************************************************/
int nrf52_sx1509_initialize(void)
{
struct i2c_master_s *i2c = NULL;
struct ioexpander_dev_s *ioe = NULL;
int ret = OK;
/* Configure sx1509 pins */
nrf52_gpio_config(GPIO_SX1509_RESET);
/* Get I2C bus */
i2c = nrf52_i2cbus_initialize(SX1509_I2C_BUS);
if (i2c == NULL)
{
_err("ERROR: Failed to initialize I2C%d\n", SX1509_I2C_BUS);
return -ENODEV;
}
/* Initialize sx1509 */
ioe = sx1509_initialize(i2c, &g_sx1509_cfg);
if (ioe == NULL)
{
_err("ERROR: Failed to initialize sx1509 %d\n", ret);
return ret;
}
/* Register pins */
nrf52_sx1509_pinscfg(ioe);
#ifdef CONFIG_SX1509_LED_ENABLE
/* Initialize sx1509 LED driver */
ret = sx1509_leds_initialize(ioe, "/dev/leds");
if (ret < 0)
{
return ret;
}
#endif
return OK;
}
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