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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/**********************************************************************
* COPYRIGHT 2020 MULTI-TECH SYSTEMS, INC.
*
* ALL RIGHTS RESERVED BY AND FOR THE EXCLUSIVE BENEFIT OF
* MULTI-TECH SYSTEMS, INC.
*
* MULTI-TECH SYSTEMS, INC. - CONFIDENTIAL AND PROPRIETARY
* INFORMATION AND/OR TRADE SECRET.
*
* NOTICE: ALL CODE, PROGRAM, INFORMATION, SCRIPT, INSTRUCTION,
* DATA, AND COMMENT HEREIN IS AND SHALL REMAIN THE CONFIDENTIAL
* INFORMATION AND PROPERTY OF MULTI-TECH SYSTEMS, INC.
* USE AND DISCLOSURE THEREOF, EXCEPT AS STRICTLY AUTHORIZED IN A
* WRITTEN AGREEMENT SIGNED BY MULTI-TECH SYSTEMS, INC. IS PROHIBITED.
*
***********************************************************************/
#include "Device.h"
Device::Lora15Card::Lora15Card(Device& d, const std::string productId, const std::string port) : LoraCard(d, productId, port) {
int ret;
fpgaVersion = 255;
if ((productId.find("MTCDT3-") == 0) && (port.back() == '2')) {
spiPath = "/dev/spidev1.0";
} else if (productId.find("MTAC-LORA-") == 0) {
if (port.back() == '2') {
spiPath = "/dev/spidev32765.2";
} else {
spiPath = "/dev/spidev32766.2";
}
}
ret = spiOpen(spiPath.c_str());
if (ret != 0) {
printf("Could not open SPI port %s", spiPath.c_str());
return;
}
/* detect if the gateway has an FPGA with SPI mux header support */
ret = spiRead(MTAC_FPGA_ADDRESS, &fpgaVersion);
if (ret != 0) {
printf("Could not read FPGA version");
}
spiClose();
spi_target_ptr = NULL;
device.accessoryCard.AddMember("fpgaVersion", fpgaVersion, device.accessoryCardsAlloc);
}
int Device::Lora15Card::spiOpen(const char *spidev) {
int *spi_device = NULL;
int dev;
int a = 0, b = 0;
int i;
/* allocate memory for the device descriptor */
spi_device = (int *)malloc(sizeof(int));
if (spi_device == NULL) {
printf("ERROR: MALLOC FAIL\n");
return -1;
}
/* open SPI device */
dev = open(spidev, O_RDWR);
if (dev < 0) {
printf("ERROR: failed to open SPI device %s\n", spidev);
return -1;
}
/* setting SPI mode to 'mode 0' */
i = SPI_MODE_3;
a = ioctl(dev, SPI_IOC_WR_MODE, &i);
b = ioctl(dev, SPI_IOC_RD_MODE, &i);
if ((a < 0) || (b < 0)) {
printf("ERROR: SPI PORT FAIL TO SET IN MODE 0\n");
close(dev);
free(spi_device);
return -1;
}
/* setting SPI max clk (in Hz) */
i = SPI_SPEED;
a = ioctl(dev, SPI_IOC_WR_MAX_SPEED_HZ, &i);
b = ioctl(dev, SPI_IOC_RD_MAX_SPEED_HZ, &i);
if ((a < 0) || (b < 0)) {
printf("ERROR: SPI PORT FAIL TO SET MAX SPEED\n");
close(dev);
free(spi_device);
return -1;
}
/* setting SPI to MSB first */
i = 0;
a = ioctl(dev, SPI_IOC_WR_LSB_FIRST, &i);
b = ioctl(dev, SPI_IOC_RD_LSB_FIRST, &i);
if ((a < 0) || (b < 0)) {
printf("ERROR: SPI PORT FAIL TO SET MSB FIRST\n");
close(dev);
free(spi_device);
return -1;
}
/* setting SPI to 8 bits per word */
i = 0;
a = ioctl(dev, SPI_IOC_WR_BITS_PER_WORD, &i);
b = ioctl(dev, SPI_IOC_RD_BITS_PER_WORD, &i);
if ((a < 0) || (b < 0)) {
printf("ERROR: SPI PORT FAIL TO SET 8 BITS-PER-WORD\n");
close(dev);
return -1;
}
*spi_device = dev;
spi_target_ptr = (void *)spi_device;
return 0;
}
int Device::Lora15Card::spiRead(uint8_t address, uint8_t *data) {
int spi_device;
uint8_t out_buf[3];
uint8_t in_buf[ARRAY_SIZE(out_buf)];
uint8_t command_size;
struct spi_ioc_transfer k;
int a;
spi_device = *(int *)spi_target_ptr; /* spi_target cannot be null beforehand */
/* prepare frame to be sent */
out_buf[0] = MTAC_FPGA;
out_buf[1] = READ_ACCESS | (address & 0x7F);
out_buf[2] = 0x00;
command_size = 3;
/* I/O transaction */
memset(&k, 0, sizeof(k)); /* clear k */
k.tx_buf = (unsigned long)out_buf;
k.rx_buf = (unsigned long)in_buf;
k.len = command_size;
k.cs_change = 1;
a = ioctl(spi_device, SPI_IOC_MESSAGE(1), &k);
/* determine return code */
if (a != (int)k.len) {
printf("ERROR: SPI READ FAILURE\n");
return -1;
} else {
*data = in_buf[command_size - 1];
return 0;
}
}
int Device::Lora15Card::spiClose() {
int spi_device;
int a;
/* close file & deallocate file descriptor */
spi_device = *(int *)spi_target_ptr; /* check that spi_target is not null */
a = close(spi_device);
free(spi_target_ptr);
/* determine return code */
if (a < 0) {
printf("ERROR: SPI PORT FAILED TO CLOSE\n");
return -1;
} else {
return 0;
}
}
|
