Diff: libraries/ad7790/AD7790.h

Revision:

1:c1f0670bb370

Child:

3:1a8c14043a4e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/ad7790/AD7790.h	Wed Mar 30 17:35:04 2016 +0300
@@ -0,0 +1,56 @@
+/**
+*   @file     AD7790.h
+*   @brief    Header file for AD7790 ADC
+*   @version  V0.1
+*   @author   ADI
+*   @date     March 2015
+**/
+
+#ifndef AD7790_H
+#define AD7790_H
+
+#include "mbed.h"
+
+/**
+ * @brief Analog Devices AD7790 SPI 16-bit Buffered Sigma-Delta ADC
+ */
+class AD7790
+{
+public:
+    /// AD7790 registers
+    typedef enum {
+        COMMUNICATION_REG = 0, ///< Communication register
+        STATUS_REG = 0,        ///< Status register
+        MODE_REG,              ///< Mode register
+        FILTER_REG,            ///< Filter Register
+        DATA_REG               ///< Data register
+    } AD7790Registers_t;
+
+    /// AD7790 channel configuration
+    typedef enum {
+        DIFFERENTIAL, ///< AIN(+)-AIN(-)
+        RESERVED,     ///< reserved
+        SHORT,        ///< AIN(-)-AIN(-)
+        VDDMONITOR    ///< Monitor VDD
+    } AD7790Channel_t;
+
+    AD7790(PinName CS=SPI_CS, PinName MOSI=SPI_MOSI,PinName MISO=SPI_MISO,PinName SCK=SPI_SCK);
+    void frequency(int hz);
+    void reset(void);
+    void write_reg(AD7790Registers_t regAddress, uint8_t regValue);
+    uint16_t write_spi(uint16_t data);
+    uint16_t read_reg (AD7790Registers_t regAddress);
+    uint16_t read_data(void);
+
+    SPI ad7790;    ///< SPI instance of the AD7790
+    DigitalOut cs; ///< DigitalOut instance for the chipselect of the AD7790
+
+private:
+
+    const static int _RESET = 0xFF;
+    const static int _DUMMY_BYTE = 0xAA;
+    const static int _READ_FLAG = 0x0800;
+    const static int _DATA_READ    = 0x38;             // Read from the Data Register
+};
+
+#endif