amiro-lld / include / alld_pca9544a.h @ 188ba2a7
History | View | Annotate | Download (4.261 KB)
| 1 |
/*
|
|---|---|
| 2 |
AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
|
| 3 |
Copyright (C) 2016..2018 Thomas Schöpping et al.
|
| 4 |
|
| 5 |
This program is free software: you can redistribute it and/or modify
|
| 6 |
it under the terms of the GNU Lesser General Public License as published by
|
| 7 |
the Free Software Foundation, either version 3 of the License, or
|
| 8 |
(at your option) any later version.
|
| 9 |
|
| 10 |
This program is distributed in the hope that it will be useful,
|
| 11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
GNU Lesser General Public License for more details.
|
| 14 |
|
| 15 |
You should have received a copy of the GNU Lesser General Public License
|
| 16 |
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
| 17 |
*/
|
| 18 |
|
| 19 |
/**
|
| 20 |
* @file alld_pca9544a.h
|
| 21 |
* @brief I2C Multiplexer macros and structures.
|
| 22 |
*
|
| 23 |
* @addtogroup lld_multi
|
| 24 |
* @{
|
| 25 |
*/
|
| 26 |
|
| 27 |
#ifndef _AMIROLLD_PCA9544A_H_
|
| 28 |
#define _AMIROLLD_PCA9544A_H_
|
| 29 |
|
| 30 |
#include <amiro-lld.h> |
| 31 |
|
| 32 |
#if defined(AMIROLLD_CFG_USE_PCA9544A) || defined(__DOXYGEN__)
|
| 33 |
|
| 34 |
/**
|
| 35 |
* @brief Maximum I2C frequency.
|
| 36 |
*/
|
| 37 |
#define PCA9544A_LLD_I2C_MAXFREQUENCY 400000 |
| 38 |
|
| 39 |
/**
|
| 40 |
* @brief The PCA9544ADriver struct
|
| 41 |
*/
|
| 42 |
typedef struct { |
| 43 |
apalI2CDriver_t* i2cd; /**< @brief The I²C driver to use. */
|
| 44 |
apalI2Caddr_t addr; /**< @brief The address of the PCA9544A for I2C communication, which is defined by the wiring of the A0, A1, A2 pins */
|
| 45 |
} PCA9544ADriver; |
| 46 |
|
| 47 |
/**
|
| 48 |
* @brief The fixed address prefix of any PCA9544A.
|
| 49 |
*/
|
| 50 |
enum {
|
| 51 |
PCA9544A_LLD_I2C_ADDR_FIXED = 0x0070u,
|
| 52 |
PCA9544A_LLD_I2C_ADDR_A0 = 0x0001u,
|
| 53 |
PCA9544A_LLD_I2C_ADDR_A1 = 0x0002u,
|
| 54 |
PCA9544A_LLD_I2C_ADDR_A2 = 0x0004u,
|
| 55 |
}; |
| 56 |
|
| 57 |
/**
|
| 58 |
* @brief The control register of the PCA9544A.
|
| 59 |
*/
|
| 60 |
typedef enum { |
| 61 |
PCA9544A_LLD_CTRLREG_INT3 = 0x80u, /**< interrupt 3 flag (1 = active) */ |
| 62 |
PCA9544A_LLD_CTRLREG_INT2 = 0x40u, /**< interrupt 2 flag (1 = active) */ |
| 63 |
PCA9544A_LLD_CTRLREG_INT1 = 0x20u, /**< interrupt 1 flag (1 = active) */ |
| 64 |
PCA9544A_LLD_CTRLREG_INT0 = 0x10u, /**< interrupt 0 flag (1 = active) */ |
| 65 |
PCA9544A_LLD_CTRLREG_EN = 0x04u, /**< multiplexing enable flag (1 = enabled) */ |
| 66 |
PCA9544A_LLD_CTRLREG_CH_MASK = 0x03u, /**< bitmask for all channel selection bits */ |
| 67 |
PCA9544A_LLD_CTRLREG_CH0 = 0x00u, /**< channel 0 selection mask */ |
| 68 |
PCA9544A_LLD_CTRLREG_CH1 = 0x01u, /**< channel 1 selection mask */ |
| 69 |
PCA9544A_LLD_CTRLREG_CH2 = 0x02u, /**< channel 2 selection mask */ |
| 70 |
PCA9544A_LLD_CTRLREG_CH3 = 0x03u, /**< channel 3 selection mask */ |
| 71 |
PCA9544A_LLD_CTRLREG_DEFAULT = 0x00u, /**< default register value after power-up */ |
| 72 |
} pca9544a_lld_ctrlreg_t; |
| 73 |
|
| 74 |
/**
|
| 75 |
* @brief Interrupt identifiers for external use.
|
| 76 |
*/
|
| 77 |
typedef enum { |
| 78 |
PCA9544A_LLD_INT0 = 0x01u, /**< interrupt 0 identifier */ |
| 79 |
PCA9544A_LLD_INT1 = 0x02u, /**< interrupt 1 identifier */ |
| 80 |
PCA9544A_LLD_INT2 = 0x04u, /**< interrupt 2 identifier */ |
| 81 |
PCA9544A_LLD_INT3 = 0x08u, /**< interrupt 3 identifier */ |
| 82 |
} pca9544a_lld_intid_t; |
| 83 |
|
| 84 |
/**
|
| 85 |
* @brief Channel selection identifier for external use.
|
| 86 |
*/
|
| 87 |
typedef enum { |
| 88 |
PCA9544A_LLD_CH0 = 0x00u, /**< identifier to select channel 0 */ |
| 89 |
PCA9544A_LLD_CH1 = 0x01u, /**< identifier to select channel 1*/ |
| 90 |
PCA9544A_LLD_CH2 = 0x02u, /**< identifier to select channel 2 */ |
| 91 |
PCA9544A_LLD_CH3 = 0x03u, /**< identifier to select channel 3 */ |
| 92 |
PCA9544A_LLD_CH_NONE = 0xFFu, /**< identifier to select no channel */ |
| 93 |
} pca9544a_lld_chid_t; |
| 94 |
|
| 95 |
typedef uint8_t pca9544a_lld_intstatus_t;
|
| 96 |
|
| 97 |
#ifdef __cplusplus
|
| 98 |
extern "C" { |
| 99 |
#endif
|
| 100 |
apalExitStatus_t pca9544a_lld_read(const PCA9544ADriver* const pca9544a, uint8_t* const data, const apalTime_t timeout); |
| 101 |
apalExitStatus_t pca9544a_lld_write(const PCA9544ADriver* const pca9544a, const uint8_t data, const apalTime_t timeout); |
| 102 |
apalExitStatus_t pca9544a_lld_getintstatus(const PCA9544ADriver* const pca9544a, pca9544a_lld_intstatus_t* const status, const apalTime_t timeout); |
| 103 |
apalExitStatus_t pca9544a_lld_getcurrentchannel(const PCA9544ADriver* const pca9544a, pca9544a_lld_chid_t* const channel, const apalTime_t timeout); |
| 104 |
apalExitStatus_t pca9544a_lld_setchannel(const PCA9544ADriver* const pca9544a, const pca9544a_lld_chid_t channel, const apalTime_t timeout); |
| 105 |
#ifdef __cplusplus
|
| 106 |
} |
| 107 |
#endif
|
| 108 |
|
| 109 |
#endif /* defined(AMIROLLD_CFG_USE_PCA9544A) */ |
| 110 |
|
| 111 |
#endif /* _AMIROLLD_PCA9544A_H_ */ |
| 112 |
|
| 113 |
/** @} */
|