Diff: libraries/cn0357/cn0357.h

Revision:

1:c1f0670bb370

Child:

3:1a8c14043a4e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/cn0357/cn0357.h	Wed Mar 30 17:35:04 2016 +0300
@@ -0,0 +1,62 @@
+/**
+*   @file     CN0357.h
+*   @brief    Header file for CN0357 toxic gas sensor shield
+*   @version  V0.1
+*   @author   ADI
+*   @date     March 2015
+**/
+
+#ifndef CN0357_H
+#define CN0357_H
+
+#include "mbed.h"
+#include "ad7790.h"
+#include "ad5270.h"
+
+/**
+ * @brief EVAL-CN0357 toxic gas sensor shield
+ */
+class CN0357
+{
+public:
+
+    /// CN0357 shield jumper configuration
+    typedef enum {
+        INTERNAL_AD7790 = 0, 	///< The shield's AD7790 is used
+        EXTERNAL_ADC			///< Sensor analog output is routed to A1 pin of the shield
+    } JumperConfig_t;
+
+    CN0357(PinName CSAD7790=D8, PinName CSAD5270=D6, PinName MOSI=SPI_MOSI,PinName MISO=SPI_MISO,PinName SCK=SPI_SCK);
+    void init(float range, float sensitivity,JumperConfig_t jp = INTERNAL_AD7790, uint8_t mode_val = _DEFAULT_MODE_VAL, uint8_t filter_val = _DEFAULT_FILTER_VAL);
+
+    uint8_t  read_adc_status(void);
+    uint16_t read_sensor(void);
+    float read_sensor_voltage(void);
+    float data_to_voltage(uint16_t data);
+    float calc_ppm(float adcVoltage);
+    float read_ppm(void);
+
+    void  set_RDAC_value(float resistor_val);
+    float get_RDAC_value(void);
+    float set_sensor_parameters(float range, float sensitivity);
+    float get_sensor_range(void);
+    float get_sensor_sensitivity(void);
+
+
+    AD7790 ad7790; ///< AD7790 instance - can be used for manual overriding
+    AD5270 ad5270; ///< AD5270 instance - can be used for manual overriding
+
+private:
+    const static int _RESET = 0xff;
+    const static int _DEFAULT_MODE_VAL = 0x00;
+    const static int _DEFAULT_FILTER_VAL = 0x07;
+    float _sensor_sensitivity;
+    float _sensor_range;
+    float _RDACvalue;
+    void _rdac_init(float resistanceValue);
+    void _AD7790_init(uint8_t mode_val, uint8_t filter_val);
+
+
+};
+
+#endif // CN0357_H