drivers/io1_xplained: initial implementation including temperature/LED/GPIO and auto init

drivers/Makefile.dep

@@ -2,6 +2,7 @@
 
 ifneq (,$(filter at30tse75x,$(USEMODULE)))
   USEMODULE += xtimer
+  FEATURES_REQUIRED += periph_i2c
 endif
 
 ifneq (,$(filter at86rf2%,$(USEMODULE)))
@@ -76,6 +77,11 @@ ifneq (,$(filter hih6130,$(USEMODULE)))
   USEMODULE += xtimer
 endif
 
+ifneq (,$(filter io1_xplained,$(USEMODULE)))
+  FEATURES_REQUIRED += periph_gpio
+  USEMODULE += at30tse75x
+endif
+
 ifneq (,$(filter kw2xrf,$(USEMODULE)))
   USEMODULE += ieee802154
   USEMODULE += netif

drivers/Makefile.include

@@ -10,6 +10,9 @@ endif
 ifneq (,$(filter kw2xrf,$(USEMODULE)))
     USEMODULE_INCLUDES += $(RIOTBASE)/drivers/kw2xrf/include
 endif
+ifneq (,$(filter io1_xplained,$(USEMODULE)))
+    USEMODULE_INCLUDES += $(RIOTBASE)/drivers/io1_xplained/include
+endif
 ifneq (,$(filter isl29020,$(USEMODULE)))
     USEMODULE_INCLUDES += $(RIOTBASE)/drivers/isl29020/include
 endif

drivers/include/io1_xplained.h

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2016 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @defgroup    drivers_io1_xplained IO1_XPLAINED
+ * @ingroup     drivers_sensors
+ * @brief       Device driver interface for the IO1 Xplained extension.
+ * @{
+ *
+ * @file
+ * @brief       Device driver interface for the IO1 Xplained extention.
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef IO1_XPLAINED_H_
+#define IO1_XPLAINED_H_
+
+#include "saul.h"
+#include "at30tse75x.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Device descriptor for the IO1 Xplained extension.
+ */
+typedef struct {
+    at30tse75x_t temp  /**< On-board temperature sensor */;
+} io1_xplained_t;
+
+
+/**
+ * @brief Device initialization parameters
+ */
+typedef struct {
+    uint8_t addr;      /**< extension custom address */
+} io1_xplained_params_t;
+
+/**
+ * @brief export SAUL endpoints
+ * @{
+ */
+extern const saul_driver_t io1_xplained_temperature_saul_driver;
+/** @} */
+
+/**
+ * @brief auto-initialize all configured IO1 Xplained extensions
+ */
+void io1_xplained_auto_init(void);
+
+/**
+ * @brief Initialize the given IO1 Xplained extension
+ *
+ * @param[out] dev          Initialized device descriptor of IO1 Xplained extension
+ * @param[in]  addr         Custom address of the extension board
+ *
+ * @return                  0 on success
+ * @return                  -1 if given I2C is not enabled in board config
+ */
+int io1_xplained_init(io1_xplained_t *dev, uint8_t addr);
+
+/**
+ * @brief Read temperature value from the given IO1 Xplained extension, returned in °C
+ *
+ * @param[in] dev           Device descriptor of IO1 Xplained to read from
+ * @param[out] temperature  Temperature in °C
+ *
+ * @return                  0 on success
+ * @return                  -1 if device's I2C is not enabled in board config
+ */
+int io1_xplained_read_temperature(io1_xplained_t *dev, float *temperature);
+
+/**
+ * @brief Set the on-board led of the IO1 Xplained extension
+ *
+ * @return                0 on success
+ * @return                -1 if extension GPIO is not enabled in board config
+ */
+int io1_xplained_set_led(void);
+
+/**
+ * @brief Clear the on-board led of the IO1 Xplained extension
+ *
+ * @return                0 on success
+ * @return                -1 if extension GPIO is not enabled in board config
+ */
+int io1_xplained_clear_led(void);
+
+/**
+ * @brief Toggle the on-board led of the IO1 Xplained extension
+ *
+ * @return                0 on success
+ * @return                -1 if extension GPIO is not enabled in board config
+ */
+int io1_xplained_toggle_led(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* IO1_XPLAINED_H_ */
+/** @} */

drivers/io1_xplained/Makefile

@@ -0,0 +1,3 @@
+MODULE = io1_xplained
+
+include $(RIOTBASE)/Makefile.base

drivers/io1_xplained/include/io1_xplained_internals.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2016 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @defgroup    drivers_io1_xplained IO1_XPLAINED
+ * @ingroup     drivers_sensors
+ * @brief       Internal addresses, constants for the IO1 Xplained extension.
+ * @{
+ *
+ * @file
+ * @brief       Internal addresses, constants for the IO1 Xplained extension.
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef IO1_XPLAINED_INTERNALS_H_
+#define IO1_XPLAINED_INTERNALS_H_
+
+#include "cpu.h"
+#include "periph_cpu.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name IO1 Xplained I2C addresses
+ * @{
+ */
+#define TEMPERATURE_BASE_ADDR          (0x48)
+#define TEMPERATURE_DEFAULT_ADDR       (0x07)
+/** @} */
+
+/**
+ * @name IO1 Xplained LED pin
+ * @{
+ */
+#define IO1_LED_PIN                    GPIO_PIN(0,18)
+/** @} */
+
+/**
+ * @name IO1 Xplained gpio pins
+ * @{
+ */
+#define IO1_GPIO1_PIN                  GPIO_PIN(0,13)
+#define IO1_GPIO2_PIN                  GPIO_PIN(0,28)
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* IO1_XPLAINED_INTERNALS_H_ */
+/** @} */

drivers/io1_xplained/include/io1_xplained_params.h

@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2016 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     drivers_io1_xplained
+ *
+ * @{
+ * @file
+ * @brief       Default configuration for IO1 Xplained
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef IO1_XPLAINED_PARAMS_H
+#define IO1_XPLAINED_PARAMS_H
+
+#include "board.h"
+#include "io1_xplained.h"
+#include "saul.h"
+#include "saul_reg.h"
+#include "saul/periph.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   Set default configuration parameters for the IO1 Xplained extension
+ * @{
+ */
+#ifndef IO1_XPLAINED_PARAM_ADDR
+#define IO1_XPLAINED_PARAM_ADDR       (0x07)
+#endif
+
+#define IO1_XPLAINED_PARAMS_DEFAULT   { .addr = IO1_XPLAINED_PARAM_ADDR }
+/**@}*/
+
+/**
+ * @brief   Configure IO1 Xplained extension
+ */
+static const io1_xplained_params_t io1_xplained_params[] =
+{
+#ifdef IO1_XPLAINED_PARAMS_BOARD
+    IO1_XPLAINED_PARAMS_BOARD,
+#else
+    IO1_XPLAINED_PARAMS_DEFAULT,
+#endif
+};
+
+/**
+ * @brief   Get the number of configured IO1 Xplained extension
+ */
+#define IO1_XPLAINED_NUMOF   (sizeof(io1_xplained_params) / sizeof(io1_xplained_params[0]))
+
+/**
+ * @brief   Reference the gpio driver struct
+ */
+extern saul_driver_t gpio_saul_driver;
+
+#ifdef MODULE_SAUL_REG
+/**
+ * @brief   Allocate and configure entries to the SAUL registry
+ */
+saul_reg_t io1_xplained_saul_reg[][4] =
+{
+    {
+        {
+            .name = "Temperature (IO1 Xplained)",
+            .driver = &io1_xplained_temperature_saul_driver
+        },
+        {
+            .name = "LED (IO1 Xplained)",
+            .driver = &gpio_saul_driver
+        },
+        {
+            .name = "GPIO1 (IO1 Xplained)",
+            .driver = &gpio_saul_driver
+        },
+        {
+            .name = "GPIO2 (IO1 Xplained)",
+            .driver = &gpio_saul_driver
+        },
+    }
+};
+#endif
+
+#ifdef MODULE_SAUL_GPIO
+/**
+ * @brief   Allocate and configure the extension LED gpios
+ */
+static gpio_t io1_xplained_saul_gpios[3] =
+{
+    IO1_LED_PIN,
+    IO1_GPIO1_PIN,
+    IO1_GPIO2_PIN,
+};
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* IO1_XPLAINED_PARAMS_H */
+/** @} */

drivers/io1_xplained/io1_xplained.c

@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2016 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     drivers_io1_xplained
+ * @{
+ *
+ * @file
+ * @brief       Device driver implementation for the Atmel IO1 Xplained extension
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#include <math.h>
+
+#include "log.h"
+#include "io1_xplained.h"
+#include "io1_xplained_internals.h"
+#include "io1_xplained_params.h"
+#include "at30tse75x.h"
+#include "periph/i2c.h"
+#include "periph/gpio.h"
+#include "xtimer.h"
+
+#define ENABLE_DEBUG        (0)
+#include "debug.h"
+
+/**
+ * @brief   Allocation of memory for device descriptors
+ */
+io1_xplained_t io1_xplained_devs[IO1_XPLAINED_NUMOF];
+
+/*---------------------------------------------------------------------------*
+ *                          IO1 Xplained Core API                            *
+ *---------------------------------------------------------------------------*/
+
+int io1_xplained_init(io1_xplained_t *dev, uint8_t addr)
+{
+    /* Initialize I2C interface */
+    if (at30tse75x_init(&dev->temp,
+                        I2C_DEV(0),
+                        I2C_SPEED_NORMAL, (TEMPERATURE_BASE_ADDR | addr)) < 0) {
+        DEBUG("[Error] Cannot initialize temperature sensor.\n");
+        return -1;
+    }
+
+    /* Use maximum resolution */
+    at30tse75x_set_resolution(&dev->temp, AT30TSE75X_RESOLUTION_12BIT);
+
+    if (gpio_init(IO1_LED_PIN, GPIO_OUT) < 0) {
+        DEBUG("[Error] GPIO LED not enabled\n");
+        return -1;
+    }
+
+    if (gpio_init(IO1_GPIO1_PIN, GPIO_OUT) < 0) {
+        DEBUG("[Error] GPIO1 not enabled\n");
+        return -1;
+    }
+
+    if (gpio_init(IO1_GPIO2_PIN, GPIO_OUT) < 0) {
+        DEBUG("[Error] GPIO2 not enabled\n");
+        return -1;
+    }
+
+    DEBUG("[Info] IO1 Xplained extension initialized!\n");
+
+    return 0;
+}
+
+void io1_xplained_auto_init(void)
+{
+    for (unsigned i = 0; i < IO1_XPLAINED_NUMOF; i++) {
+        if (io1_xplained_init(&io1_xplained_devs[i],
+                              io1_xplained_params[i].addr) < 0) {
+            LOG_ERROR("Unable to initialize IO1 Xplained #%i\n", i);
+        }
+#ifdef MODULE_SAUL_REG
+        io1_xplained_saul_reg[i][0].dev = &io1_xplained_devs[i];
+        saul_reg_add(&io1_xplained_saul_reg[i][0]);
+#endif
+#ifdef MODULE_SAUL_GPIO
+        for (unsigned j = 1; j < 4; j++) {
+            io1_xplained_saul_reg[i][j].dev = &(io1_xplained_saul_gpios[j-1]);
+            saul_reg_add(&(io1_xplained_saul_reg[i][j]));
+        }
+#endif
+    }
+}
+
+int io1_xplained_read_temperature(io1_xplained_t *dev, float *temperature)
+{
+    if (at30tse75x_get_temperature(&dev->temp, temperature) < 0) {
+        DEBUG("[Error] Cannot read IO1 Xplained temperatuse sensor.\n");
+        return -1;
+    }
+    return 0;
+}
+
+int io1_xplained_set_led(void)
+{
+    gpio_set(IO1_LED_PIN);
+    return 0;
+}
+
+int io1_xplained_clear_led(void)
+{
+    gpio_clear(IO1_LED_PIN);
+    return 0;
+}
+
+int io1_xplained_toggle_led(void)
+{
+    gpio_toggle(IO1_LED_PIN);
+    return 0;
+}

drivers/io1_xplained/io1_xplained_saul.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2016 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     drivers_io1_xplained
+ * @{
+ *
+ * @file
+ * @brief       SAUL adaption for IO1 Xplained extension
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#include <string.h>
+
+#include "saul.h"
+#include "io1_xplained.h"
+#include "xtimer.h"
+
+static float temperature;
+
+static int read_temperature(void *dev, phydat_t *res)
+{
+    io1_xplained_t *d = (io1_xplained_t *)dev;
+    io1_xplained_read_temperature(d, &temperature);
+    res->val[0] = (int)(temperature * 100.0);
+    res->unit = UNIT_TEMP_C;
+    res->scale = -2;
+    return 1;
+}
+
+const saul_driver_t io1_xplained_temperature_saul_driver = {
+    .read = read_temperature,
+    .write = saul_notsup,
+    .type = SAUL_SENSE_TEMP
+};

sys/auto_init/auto_init.c

@@ -24,6 +24,10 @@
 #include "bmp180.h"
 #endif
 
+#ifdef MODULE_IO1_XPLAINED
+#include "io1_xplained.h"
+#endif
+
 #ifdef MODULE_SHT11
 #include "sht11.h"
 #endif
@@ -108,6 +112,10 @@ void auto_init(void)
     DEBUG("Auto init BMP180 module.\n");
     bmp180_auto_init();
 #endif
+#ifdef MODULE_IO1_XPLAINED
+    DEBUG("Auto init IO1 Xplained extension module.\n");
+    io1_xplained_auto_init();
+#endif
 #ifdef MODULE_SHT11
     DEBUG("Auto init SHT11 module.\n");
     sht11_init();

tests/driver_io1_xplained/Makefile

@@ -0,0 +1,14 @@
+APPLICATION = driver_io1_xplained
+include ../Makefile.tests_common
+
+USEMODULE += io1_xplained
+USEMODULE += xtimer
+USEMODULE += printf_float
+
+# set default device parameters in case they are undefined
+TEST_ADDR ?= 0x07
+
+# export parameters
+CFLAGS += -DTEST_ADDR=$(TEST_ADDR)
+
+include $(RIOTBASE)/Makefile.include

tests/driver_io1_xplained/README.md

@@ -0,0 +1,5 @@
+### Test application for the IO1 Xplained extension
+
+The Atmel IO1 Xplained is an extension board to the Atmel Xplained Pro
+evaluation platform.
+More information in the [user mannual](http://www.atmel.com/images/atmel-42078-io1-xplained-pro_user-guide.pdf).

tests/driver_io1_xplained/main.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2016 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for the Atmel IO1 Xplained extension
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#ifndef TEST_ADDR
+#error "TEST_ADDR not defined"
+#endif
+
+#include <stdio.h>
+#include <inttypes.h>
+
+#include "io1_xplained.h"
+#include "xtimer.h"
+#include "board.h"
+
+#define SLEEP_1S   (1 * 1000 * 1000u) /* 1 seconds delay between each test */
+
+int main(void)
+{
+    io1_xplained_t dev;
+    float temperature;
+    int result;
+
+    puts("IO1 Xplained extention test application\n");
+
+    printf("+------------Initializing------------+\n");
+    result = io1_xplained_init(&dev, TEST_ADDR);
+    if (result == -1) {
+        puts("[Error] Cannot initialize the IO1 Xplained extension\n");
+        return 1;
+    }
+    else {
+        printf("Initialization successful\n\n");
+    }
+
+    printf("\n+--------Starting tests --------+\n");
+    while (1) {
+        /* Get temperature in degrees celsius */
+        io1_xplained_read_temperature(&dev, &temperature);
+        printf("Temperature [°C]: %.2f\n"
+               "\n+-------------------------------------+\n",
+               temperature);
+        xtimer_usleep(SLEEP_1S);
+
+        /* set led */
+        io1_xplained_set_led();
+        xtimer_usleep(SLEEP_1S);
+
+        /* clear led */
+        io1_xplained_clear_led();
+        xtimer_usleep(SLEEP_1S);
+
+        /* toggle led */
+        io1_xplained_toggle_led();
+        xtimer_usleep(SLEEP_1S);
+
+        /* toggle led again */
+        io1_xplained_toggle_led();
+        xtimer_usleep(SLEEP_1S);
+    }
+
+    return 0;
+}