David Giles
This software drives a PCA9675 device via an I2C bus. Included functions allow you to read the device ID, set the IO direction, and read and write from the device.
Header/PCA9675.h@0:3331b5950572, 2010-11-23 (annotated)
- Committer:
- DavidGilesHitex
- Date:
- Tue Nov 23 10:59:14 2010 +0000
- Revision:
- 0:3331b5950572
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| DavidGilesHitex | 0:3331b5950572 | 1 | #include "mbed.h" |
| DavidGilesHitex | 0:3331b5950572 | 2 | |
| DavidGilesHitex | 0:3331b5950572 | 3 | #ifndef PCA9675__ |
| DavidGilesHitex | 0:3331b5950572 | 4 | #define PCA9675__ |
| DavidGilesHitex | 0:3331b5950572 | 5 | #endif |
| DavidGilesHitex | 0:3331b5950572 | 6 | |
| DavidGilesHitex | 0:3331b5950572 | 7 | /* Define a class for PCA9675 */ |
| DavidGilesHitex | 0:3331b5950572 | 8 | class PCA9675 |
| DavidGilesHitex | 0:3331b5950572 | 9 | { |
| DavidGilesHitex | 0:3331b5950572 | 10 | /* Private members first */ |
| DavidGilesHitex | 0:3331b5950572 | 11 | private: |
| DavidGilesHitex | 0:3331b5950572 | 12 | uint8_t My_Lcoal_Slave_Address; |
| DavidGilesHitex | 0:3331b5950572 | 13 | uint8_t My_Local_Port0_Direction; |
| DavidGilesHitex | 0:3331b5950572 | 14 | uint8_t My_Local_Port1_Direction; |
| DavidGilesHitex | 0:3331b5950572 | 15 | sint32_t reset(); /* Reset the device using a general call */ |
| DavidGilesHitex | 0:3331b5950572 | 16 | I2C *My_Local_I2C; /* make use of the existing I2C class for i2C calls */ |
| DavidGilesHitex | 0:3331b5950572 | 17 | |
| DavidGilesHitex | 0:3331b5950572 | 18 | /* Public members next */ |
| DavidGilesHitex | 0:3331b5950572 | 19 | public: |
| DavidGilesHitex | 0:3331b5950572 | 20 | PCA9675(I2C *Selected_I2C_Channel, uint8_t Slave_Address); /* Constructor - create with the slave address */ |
| DavidGilesHitex | 0:3331b5950572 | 21 | ~PCA9675(); /* Destructor */ |
| DavidGilesHitex | 0:3331b5950572 | 22 | sint32_t init(uint8_t port0_Direction, uint8_t port1_Direction); /* Reset the device and setup the IO direction */ |
| DavidGilesHitex | 0:3331b5950572 | 23 | sint32_t write_data(uint8_t port0_payload, uint8_t port1_payload); /* Write two bytes of data to the device */ |
| DavidGilesHitex | 0:3331b5950572 | 24 | sint32_t read_data(uint8_t *read_port0, uint8_t *read_port1); /* Read two bytes from the device */ |
| DavidGilesHitex | 0:3331b5950572 | 25 | sint32_t read_device_ID(uint8_t *manufacturer, uint16_t *part_ident, uint8_t *die_revision); |
| DavidGilesHitex | 0:3331b5950572 | 26 | uint8_t read_slave_address(); /* Read the configured slave address */ |
| DavidGilesHitex | 0:3331b5950572 | 27 | |
| DavidGilesHitex | 0:3331b5950572 | 28 | |
| DavidGilesHitex | 0:3331b5950572 | 29 | enum PCA9675_Defines |
| DavidGilesHitex | 0:3331b5950572 | 30 | { |
| DavidGilesHitex | 0:3331b5950572 | 31 | eI2C_ACK = 0, |
| DavidGilesHitex | 0:3331b5950572 | 32 | ePCA9675_RESET_COMMAND = 6, |
| DavidGilesHitex | 0:3331b5950572 | 33 | ePCA9675_RESET_ADDRESS = 0, |
| DavidGilesHitex | 0:3331b5950572 | 34 | ePCA9675_PORT0 = 0, |
| DavidGilesHitex | 0:3331b5950572 | 35 | ePCA9675_PORT1 = 1, |
| DavidGilesHitex | 0:3331b5950572 | 36 | eI2C_REPEATED_START = 1, |
| DavidGilesHitex | 0:3331b5950572 | 37 | eI2C_NO_REPEATED_START = 0 |
| DavidGilesHitex | 0:3331b5950572 | 38 | }; |
| DavidGilesHitex | 0:3331b5950572 | 39 | |
| DavidGilesHitex | 0:3331b5950572 | 40 | |
| DavidGilesHitex | 0:3331b5950572 | 41 | }; |
| DavidGilesHitex | 0:3331b5950572 | 42 | |
| DavidGilesHitex | 0:3331b5950572 | 43 | |
| DavidGilesHitex | 0:3331b5950572 | 44 | |
| DavidGilesHitex | 0:3331b5950572 | 45 | |
| DavidGilesHitex | 0:3331b5950572 | 46 |