AD8232: Adding C Source

Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

src/ad8232/CMakeLists.txt

@@ -1,5 +1,9 @@
-set (libname "ad8232")
-set (libdescription "upm ad8232 heart rate monitor")
-set (module_src ${libname}.cxx)
-set (module_hpp ${libname}.hpp)
-upm_module_init()
+upm_mixed_module_init (NAME ad8232
+    DESCRIPTION "upm ad8232sensor module"
+    C_HDR ad8232.h
+    C_SRC ad8232.c
+    CPP_HDR ad8232.hpp
+    CPP_SRC ad8232.cxx
+    FTI_SRC ad8232_fti.c
+    CPP_WRAPS_C
+    REQUIRES mraa)

src/ad8232/ad8232.c

@@ -0,0 +1,87 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ *         Abhishek Malik <abhishek.malik@intel.com>
+ * Copyright (c) 2016 Intel Corporation.
+ *
+ * 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 "ad8232.h"
+
+ad8232_context ad8232_init(int lo_plus, int lo_minus, int output,
+                           float a_ref) {
+    ad8232_context dev =
+      (ad8232_context) malloc(sizeof(struct _ad8232_context));
+
+    if(dev == NULL){
+        printf("Unable to assign memory to the Heart Rate Monitor structure");
+        return NULL;
+    }
+
+    dev->gpio_lo_plus_pin = lo_plus;
+    dev->gpio_lo_minus_pin = lo_minus;
+    dev->aio_pin = output;
+
+    dev->aio = mraa_aio_init(dev->aio_pin);
+    dev->gpio_lo_plus = mraa_gpio_init(dev->gpio_lo_plus_pin);
+    dev->gpio_lo_minus = mraa_gpio_init(dev->gpio_lo_minus_pin);
+
+    if (dev->aio == NULL || dev->gpio_lo_minus == NULL ||
+        dev->gpio_lo_plus == NULL){
+        printf("The pins did not initialize correctly");
+        return NULL;
+    }
+
+    if (mraa_gpio_dir(dev->gpio_lo_minus, MRAA_GPIO_IN) != MRAA_SUCCESS ||
+        mraa_gpio_dir(dev->gpio_lo_plus, MRAA_GPIO_IN) != MRAA_SUCCESS){
+        printf("Couldn't set the direction for the GPIO pins");
+        return NULL;
+    }
+
+    dev->a_res = (1 << mraa_aio_get_bit(dev->aio));
+    return dev;
+}
+
+void ad8232_close(ad8232_context dev){
+    if (dev->gpio_lo_minus != NULL)
+        mraa_gpio_close(dev->gpio_lo_minus);
+    if (dev->gpio_lo_plus != NULL)
+        mraa_gpio_close(dev->gpio_lo_plus);
+    if (dev->aio != NULL)
+        mraa_aio_close(dev->aio);
+
+    free(dev);
+}
+
+upm_result_t ad8232_get_value(ad8232_context dev, int* value) {
+    int reading = 0;
+
+    if (mraa_gpio_read(dev->gpio_lo_minus) ||
+        mraa_gpio_read(dev->gpio_lo_plus)) {
+        reading = 0;
+    }
+    else {
+        reading = mraa_aio_read(dev->aio);
+    }
+
+    *value = reading;
+
+    return UPM_SUCCESS;
+}

src/ad8232/ad8232.h

@@ -0,0 +1,61 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ *         Abhishek Malik <abhishek.malik@intel.com>
+ * Copyright (c) 2016 Intel Corporation.
+ *
+ * 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.
+ */
+
+#ifndef AD8232_H_
+#define AD8232_H_
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "upm.h"
+#include "mraa/aio.h"
+#include "mraa/gpio.h"
+
+#define AD8232_DEFAULT_AREF  3.3
+
+/**
+ * device context
+ */
+typedef struct _ad8232_context {
+    mraa_aio_context        aio;
+    mraa_gpio_context       gpio_lo_plus;
+    mraa_gpio_context       gpio_lo_minus;
+    uint8_t                 aio_pin;
+    uint8_t                 gpio_lo_plus_pin;
+    uint8_t                 gpio_lo_minus_pin;
+    int                     a_res;
+} *ad8232_context;
+
+/**
+ * Sensor Init function
+ */
+ad8232_context ad8232_init(int lo_plus, int lo_minus, int output, float a_ref);
+
+void ad8232_close(ad8232_context dev);
+
+upm_result_t ad8232_get_value(ad8232_context dev, int* value);
+
+#endif /* AD8232_H_ */

src/ad8232/ad8232_fti.c

@@ -0,0 +1,92 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ *         Abhishek Malik <abhishek.malik@intel.com>
+ * Copyright (c) 2016 Intel Corporation.
+ *
+ * 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 "ad8232.h"
+#include "upm_fti.h"
+
+/** 
+ * This file implements the Function Table Interface (FTI) for this sensor
+ */
+
+const char upm_ad8232_name[] = "AD8232";
+const char upm_ad8232_description[] = "AD8232 Heart Rate Monitor";
+const upm_protocol_t upm_ad8232_protocol[] = {UPM_ANALOG, UPM_GPIO};
+const upm_sensor_t upm_ad8232_category[] = {UPM_HEART_RATE};
+
+// forward declarations
+upm_sensor_descriptor_t upm_ad8232_get_descriptor (void* dev);
+const void* upm_ad8232_get_ft(upm_sensor_t sensor_type);
+void* upm_ad8232_init_name();
+void upm_ad8232_close(void* dev);
+upm_result_t upm_ad8232_get_value(void* dev, int* value,
+                                  upm_heart_rate_u rate_unit);
+
+upm_sensor_descriptor_t upm_ad8232_get_descriptor (void* dev){
+    upm_sensor_descriptor_t usd;
+    usd.name = upm_ad8232_name;
+    usd.description = upm_ad8232_description;
+    usd.protocol_size = 2;
+    usd.protocol = upm_ad8232_protocol;
+    usd.category_size = 1;
+    usd.category = upm_ad8232_category;
+    return usd;
+}
+
+static const upm_sensor_ft ft =
+{
+    .upm_sensor_init_name = &upm_ad8232_init_name,
+    .upm_sensor_close = &upm_ad8232_close,
+    //.upm_sensor_get_descriptor = &upm_ad8232_get_descriptor
+};
+
+static const upm_heart_rate_ft hft =
+{
+    .upm_heart_rate_get_value = &upm_ad8232_get_value
+};
+
+const void* upm_ad8232_get_ft(upm_sensor_t sensor_type){
+    if(sensor_type == UPM_HEART_RATE){
+        return &hft;
+    }
+    else if(sensor_type == UPM_SENSOR){
+        return &ft;
+    }
+
+    return NULL;
+}
+
+void* upm_ad8232_init_name(){
+    return NULL;
+}
+
+void upm_ad8232_close(void* dev){
+    ad8232_close(dev);
+}
+
+upm_result_t upm_ad8232_get_value(void* dev, int* value,
+                                  upm_heart_rate_u rate_unit){
+    // rate_unit does not apply to this device, so...
+    return ad8232_get_value(dev, value);
+}