Diff: MCP3425.h

Revision:

2:bb3efa8c5b23

Parent:

1:223248a79e87

--- a/MCP3425.h	Sun Mar 18 01:24:58 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,154 +0,0 @@
-/*
- * mbed library program
- *  16-Bit Analog-to-Digital Converter with I2C Interface
- *  MCP3425 by Microchip Technology Inc.
- *
- * Copyright (c) 2018 Kenji Arai / JH1PJL
- *  http://www.page.sannet.ne.jp/kenjia/index.html
- *  http://mbed.org/users/kenjiArai/
- *      Modify:     March     17th, 2018
- *      Revised:    March     18th, 2018
- */
-/*
- *---------------- REFERENCE ---------------------------------------------------
- * Data Sheet DS22072B  Revision B(August 2009) by Microchip Technology Inc. 
- *      http://www.microchip.com/wwwproducts/en/MCP3425
- *      http://akizukidenshi.com/catalog/g/gK-08018/
- */
-
-#ifndef MCP3425_H
-#define MCP3425_H
-
-#include "mbed.h"
-
-////////////// I2C Chip address ////////////////////////////////////////////////
-// The device code is followed by three address bits (A2, A1, A0)
-//   which are also programmed at the Microchip factory
-// Address b7=1,b6=1,b5=0,b4=1,b3(A2)=0,b2(A1)=x,b1(A0)=x, b0=R/W
-#define MCP3425A0T_ADDR             (0x68 << 1)
-#define MCP3425A1T_ADDR             (0x69 << 1)     // option by the factory
-#define MCP3425A2T_ADDR             (0x6a << 1)     // option by the factory
-#define MCP3425A3T_ADDR             (0x6b << 1)     // option by the factory
-
-////////////// Configration Registers parameter ////////////////////////////////
-#define PGA_GAIN_1                  0
-#define PGA_GAIN_2                  1
-#define PGA_GAIN_4                  2
-#define PGA_GAIN_8                  3
-
-#define CONV_MODE_CONTINUOUS        1
-#define CONV_MODE_ONE_SHOT          0
-
-#define SAMPLE_RATE_240SPS_12BIT    0
-#define SAMPLE_RATE_60SPS_14BIT     1
-#define SAMPLE_RATE_15SPS_16BIT     2
-
-typedef struct configration_reg {
-    uint8_t     pga_gain;
-    uint8_t     sample_rate;
-    uint8_t     conversion_mode;
-} mcp3425_config_t;
-
-/** Interface for ADC MCP3425
- * @code
- * #include "mbed.h"
- * #include "MCP3425.h"
- *
- * // Default parameter setting
- * // Continuous Conversion + 15 SPS (16 bits) + Gain x1
- *
- * // I2C Communication
- *  MCP3425      adc(I2C_SDA, I2C_SCL);
- * // If you connected I2C line not only this device but also other devices,
- * //     you need to declare following method.
- *  I2C          i2c((I2C_SDA, I2C_SCL));
- *  MCP3425      adc(i2c);
- *
- * int main() {
- *   while(true){
- *      printf("ADC: %6.5f [V]\r\n", adc.read_voltage());
- *      wait(0.2f);
- *   }
- * }
- * @endcode
- */
-
-class MCP3425
-{
-public:
-    /** Configure data pin
-      * @param data SDA and SCL pins
-      */
-    MCP3425(PinName p_sda, PinName p_scl);
-    MCP3425(PinName p_sda, PinName p_scl, uint8_t addr);
-
-    /** Configure data pin (with other devices on I2C line)
-      * @param I2C previous definition
-      */
-    MCP3425(I2C& p_i2c);
-    MCP3425(I2C& p_i2c, uint8_t addr);
-
-    /** Get ADC data
-      * @param none
-      * @return ADC data in 16bit
-      */
-    int16_t read_16bit(void);
-
-    /** Get ADC data
-      * @param none
-      * @return voltage (includes Gain, Data rate, offset, vref compensation)
-      */
-    float read_voltage(void);
-
-    /** Set voltage offset (only effective for read_voltage() function)
-      * @param offset voltage (0.0f = default)
-      * @return none
-      */
-    void set_offset_volt(float offset);
-
-    /** Set refrence volt compensation (only effective for read_voltage())
-      * @param compensation data (1.00f = default)
-      * @return none
-      */
-    void set_vref_compensation(float compensation);
-
-    /** Set  Configuration Register
-      * @param pointer for register parameter
-      * @return none
-      */
-    void set_config(mcp3425_config_t *parameter);
-
-    /** Read Configuration Register
-      * @param pointer for register parameter
-      * @return parameter (into above pointer)
-      */
-    void read_config(mcp3425_config_t *parameter);
-
-    /** Set I2C clock frequency
-      * @param freq.
-      * @return none
-      */
-    void frequency(uint32_t hz);
-
-protected:
-    I2C *_i2c_p;
-    I2C &_i2c;
-
-    void init(void);
-    uint8_t convert_config2byte(mcp3425_config_t *config);
-
-private:
-    uint8_t mcp3425_addr;
-    uint8_t buf[4];
-    uint8_t config_byte;
-    mcp3425_config_t config;
-
-    float   offset_volt;
-    float   compensation_ref;
-
-    int16_t dt_adc16;
-    float   dt_adc_f;
-
-};
-
-#endif      // MCP3425_H