1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
/ _____) _ | |
( (____ _____ ____ _| |_ _____ ____| |__
\____ \| ___ | (_ _) ___ |/ ___) _ \
_____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
©2013 Semtech-Cycleo
Description:
Host specific functions to address the LoRa™ gateway registers through a
SPI interface.
Single-byte read/write and burst read/write.
Does not handle pagination.
Could be used with multiple SPI ports in parallel (explicit file descriptor)
*/
#ifndef _LORAGW_SPI_H
#define _LORAGW_SPI_H
/* -------------------------------------------------------------------------- */
/* --- DEPENDANCIES --------------------------------------------------------- */
#include <stdint.h> /* C99 types*/
/* -------------------------------------------------------------------------- */
/* --- PUBLIC CONSTANTS ----------------------------------------------------- */
#define LGW_SPI_SUCCESS 0
#define LGW_SPI_ERROR -1
#define LGW_BURST_CHUNK 1024
/* -------------------------------------------------------------------------- */
/* --- PUBLIC FUNCTIONS PROTOTYPES ------------------------------------------ */
/**
@brief Lora gateway SPI setup (configure I/O and peripherals)
@param spi_device pointer to SPI file descriptor to be written
@return status of register operation (LGW_SPI_SUCCESS/LGW_SPI_ERROR)
*/
int lgw_spi_open(int *spi_device);
/**
@brief Lora gateway SPI close
@param spi_device SPI file descriptor of the port to close
@return status of register operation (LGW_SPI_SUCCESS/LGW_SPI_ERROR)
*/
int lgw_spi_close(int spi_device);
/**
@brief Lora gateway SPI single-byte write
@param spi_device SPI file descriptor of the target port
@param address 7-bit register address
@param data data byte to write
@return status of register operation (LGW_SPI_SUCCESS/LGW_SPI_ERROR)
*/
int lgw_spi_w(int spi_device, uint8_t address, uint8_t data);
/**
@brief Lora gateway SPI single-byte read
@param spi_device SPI file descriptor of the target port
@param address 7-bit register address
@param data data byte to write
@return status of register operation (LGW_SPI_SUCCESS/LGW_SPI_ERROR)
*/
int lgw_spi_r(int spi_device, uint8_t address, uint8_t *data);
/**
@brief Lora gateway SPI burst (multiple-byte) write
@param spi_device SPI file descriptor of the target port
@param address 7-bit register address
@param data pointer to byte array that will be sent to the Lora gateway
@param size size of the transfer, in byte(s)
@return status of register operation (LGW_SPI_SUCCESS/LGW_SPI_ERROR)
*/
int lgw_spi_wb(int spi_device, uint8_t address, uint8_t *data, uint16_t size);
/**
@brief Lora gateway SPI burst (multiple-byte) read
@param spi_device SPI file descriptor of the target port
@param address 7-bit register address
@param data pointer to byte array that will be written from the Lora gateway
@param size size of the transfer, in byte(s)
@return status of register operation (LGW_SPI_SUCCESS/LGW_SPI_ERROR)
*/
int lgw_spi_rb(int spi_device, uint8_t address, uint8_t *data, uint16_t size);
#endif
/* --- EOF ------------------------------------------------------------------ */
|
