Ryan Vasquez / PGA112_Driver

This is a library for the Texas Instruments PGA112

PGA122_Driver.h@0:4cb6d8393e9d, 2019-01-21 (annotated)

Committer:
rvasquez6089
Date:
Mon Jan 21 19:00:25 2019 +0000
Revision:
0:4cb6d8393e9d
Child:
1:b3fee6ce395f
Not tested yet, but will soon. Should work just fine.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rvasquez6089 0:4cb6d8393e9d 1 #ifndef PGA112_DRIVER_H
rvasquez6089 0:4cb6d8393e9d 2 #define PGA112_DRIVER_H
rvasquez6089 0:4cb6d8393e9d 3 #include "mbed.h"
rvasquez6089 0:4cb6d8393e9d 4 #define CMD_WRITE 0x2A
rvasquez6089 0:4cb6d8393e9d 5
rvasquez6089 0:4cb6d8393e9d 6 #define GAIN_1 0x0
rvasquez6089 0:4cb6d8393e9d 7 #define GAIN_2 0x1
rvasquez6089 0:4cb6d8393e9d 8 #define GAIN_4 0x2
rvasquez6089 0:4cb6d8393e9d 9 #define GAIN_8 0x3
rvasquez6089 0:4cb6d8393e9d 10 #define GAIN_16 0x4
rvasquez6089 0:4cb6d8393e9d 11 #define GAIN_32 0x5
rvasquez6089 0:4cb6d8393e9d 12 #define GAIN_64 0x6
rvasquez6089 0:4cb6d8393e9d 13 #define GAIN_128 0x7
rvasquez6089 0:4cb6d8393e9d 14
rvasquez6089 0:4cb6d8393e9d 15 #define CAL_1 0xC // Channel 12
rvasquez6089 0:4cb6d8393e9d 16 #define CAL_2 0xD // Channel 13
rvasquez6089 0:4cb6d8393e9d 17 #define CAL_3 0xE // Channel 14
rvasquez6089 0:4cb6d8393e9d 18 #define CAL_4 0xF // Channel 15
rvasquez6089 0:4cb6d8393e9d 19 #define VCAL_CH0 0x0 // channel 0
rvasquez6089 0:4cb6d8393e9d 20 #define CH_1 0x1 // channel 1
rvasquez6089 0:4cb6d8393e9d 21
rvasquez6089 0:4cb6d8393e9d 22
rvasquez6089 0:4cb6d8393e9d 23 /** This is library to drive the PGA112. Basic funcitons have been implemented.
rvasquez6089 0:4cb6d8393e9d 24 *
rvasquez6089 0:4cb6d8393e9d 25 */
rvasquez6089 0:4cb6d8393e9d 26
rvasquez6089 0:4cb6d8393e9d 27 class PGA112
rvasquez6089 0:4cb6d8393e9d 28 {
rvasquez6089 0:4cb6d8393e9d 29 public:
rvasquez6089 0:4cb6d8393e9d 30 /** Create a PGA object
rvasquez6089 0:4cb6d8393e9d 31 * This takes a pointer object of an SPI bus. Becareful, this is not thread safe
rvasquez6089 0:4cb6d8393e9d 32 * and may cause hanging
rvasquez6089 0:4cb6d8393e9d 33 *
rvasquez6089 0:4cb6d8393e9d 34 * @param SPI_BUS pointer to SPI object
rvasquez6089 0:4cb6d8393e9d 35 * @param Chip_Select chip select line for the PGA. pointer plz
rvasquez6089 0:4cb6d8393e9d 36 */
rvasquez6089 0:4cb6d8393e9d 37 PGA112(SPI *SPI_BUS, DigitalOut *Chip_Select);
rvasquez6089 0:4cb6d8393e9d 38 /** This will set the gain for the PGA
rvasquez6089 0:4cb6d8393e9d 39 * Please only use binary gains.....1,2,4,8,16,32,64,128
rvasquez6089 0:4cb6d8393e9d 40 *
rvasquez6089 0:4cb6d8393e9d 41 * @param gain_set parameter to set gain, see comment for acceptable gain values
rvasquez6089 0:4cb6d8393e9d 42 */
rvasquez6089 0:4cb6d8393e9d 43 void set_gain(int gain_set);
rvasquez6089 0:4cb6d8393e9d 44 /** Sets the channel selection
rvasquez6089 0:4cb6d8393e9d 45 * CAL_1 0xC // Channel 12 GND
rvasquez6089 0:4cb6d8393e9d 46 * CAL_2 0xD // Channel 13 0.9*Vcal
rvasquez6089 0:4cb6d8393e9d 47 * CAL_3 0xE // Channel 14 0.1*Vcal
rvasquez6089 0:4cb6d8393e9d 48 * CAL_4 0xF // Channel 15 Vref (2.5000 volts)
rvasquez6089 0:4cb6d8393e9d 49 * VCAL_CH0 0x0 // channel 0 Vcal (5.0000 volts)
rvasquez6089 0:4cb6d8393e9d 50 * CH_1 0x1 // channel 1
rvasquez6089 0:4cb6d8393e9d 51 *
rvasquez6089 0:4cb6d8393e9d 52 * @param channel_set the channel you want to select. See above table for values
rvasquez6089 0:4cb6d8393e9d 53 */
rvasquez6089 0:4cb6d8393e9d 54 void set_channel(int channel_set);
rvasquez6089 0:4cb6d8393e9d 55 /** Sets the channel to CAL1 channel which is connected to GND
rvasquez6089 0:4cb6d8393e9d 56 */
rvasquez6089 0:4cb6d8393e9d 57 void set_CAL1();
rvasquez6089 0:4cb6d8393e9d 58 /** Sets the channel to CAL2 channel which is connected to 0.9*Vcal (Vcal = 5)
rvasquez6089 0:4cb6d8393e9d 59 */
rvasquez6089 0:4cb6d8393e9d 60 void set_CAL2();
rvasquez6089 0:4cb6d8393e9d 61 /** Sets the channel to CAL3 channel which is connected to 0.1*Vcal (Vcal = 5)
rvasquez6089 0:4cb6d8393e9d 62 */
rvasquez6089 0:4cb6d8393e9d 63 void set_CAL3();
rvasquez6089 0:4cb6d8393e9d 64 /** Sets the channel to CAL4 channel which is connected to Vref (2.5V)
rvasquez6089 0:4cb6d8393e9d 65 */
rvasquez6089 0:4cb6d8393e9d 66 void set_CAL4();
rvasquez6089 0:4cb6d8393e9d 67 private:
rvasquez6089 0:4cb6d8393e9d 68 SPI *PGA;
rvasquez6089 0:4cb6d8393e9d 69 DigitalOut *CS;
rvasquez6089 0:4cb6d8393e9d 70 int gain;
rvasquez6089 0:4cb6d8393e9d 71 int channel;
rvasquez6089 0:4cb6d8393e9d 72 char gain_chan;
rvasquez6089 0:4cb6d8393e9d 73 };
rvasquez6089 0:4cb6d8393e9d 74 #endif